JPH0934131A - Correcting method of waterless planographic printing plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent missing of a corrected ink-repelling part even when printing is performed for a long time or lots of prints are produced by using a correcting liquid comprising a specified silicone compsn. SOLUTION: Two or three kinds of liquids for a correcting liquid are prepared by using the following components (a), (b), and (c). These liquids are mixed before coating or each liquid is successively applied in a desired order. (a) Org. siloxane containing hydroxyl groups. (b) Hydrodiene siloxane. (c) Complex containing at least one kind of element selected from among aluminum, barium, beryllium, cadmium, calcium, cerium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gold, hafnium, holmium, indium, iridium, iron, lanthanum, lead, lithium, ruthenium, magnesium, manganese, molybdenum, neodymium, nickel, palladium, and potassium.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for correcting a waterless planographic printing plate precursor, and more particularly to a method for correcting a waterless planographic printing plate characterized by using a correction liquid containing a specific silicone composition. It is a thing.

[0002]

2. Description of the Related Art Conventionally, a printing plate for carrying out lithographic printing without using dampening water, using a silicone rubber or a fluororesin as an ink repellent layer, particularly a photosensitive lithographic plate obtained by selectively exposing and developing. Various original printing plates have been proposed.

In such waterless planographic printing, the image area and the non-image area are basically on the same plane, and the image area is the ink receptive layer and the non-image area is the ink repellent layer. In the lithographic printing method, in which the ink is applied only to the image area using the difference in ink adhesion, and then the ink is transferred to the printing material such as paper for printing, the non-image area is A printing method comprising a substance having an ink resilience such as rubber and a fluorine-containing compound and capable of printing without using fountain solution.

For example, as a positive type waterless planographic printing plate precursor, Japanese Patent Publication No. 54-26923 and Japanese Patent Publication No. 56-2
No. 3150, a waterless planographic printing plate precursor in which a photopolymerizable photosensitive layer and a silicone rubber layer which is an ink repellent layer are laminated on a support, and Japanese Patent Publication No. 3-56622 and JP-A-61-1622. No. 153655 discloses a waterless planographic printing plate precursor in which a photodimerization type photosensitive layer and a silicone rubber layer which is an ink repellent layer are laminated on a support. As a negative type waterless planographic printing plate precursor, Japanese Patent Publication No. 61-54
222, etc., a photoremovable photosensitive layer obtained by crosslinking a partially esterified product of 1,2-naphthoquinone-2-diazide-5-sulfonic acid chloride and phenol formaldehyde novolac resin on a support with a polyfunctional isocyanate. , And a waterless planographic printing plate precursor on which a silicone rubber layer as an ink repellent layer is laminated.

These waterless lithographic printing plates are usually exposed to actinic radiation through a positive or negative film. Then, after that, by developing, only the silicone rubber layer corresponding to the image area is peeled off to expose the photosensitive layer, and the image area having ink receptivity is formed.

Photosensitive lithographic printing plate precursors using a fluororesin for the ink repellent layer are disclosed in JP-A-2-254449, JP-A-2-85855, 1H, 1
A waterless lithographic printing plate precursor using a fluororesin containing H, 2H, 2H-heptadecafluorodecyl methacrylate as an ink repellent layer is disclosed.

By the way, in the waterless planographic printing plate as described above, the influence of dust in the work place, the defects of the edges of the positive film and the negative film, scratches, pinholes and the like, or the mishandling during the work, etc. As a result, the ink repulsion layer at the portion that should originally be the non-image area may be missing. In such a case, when printing is performed using this printing plate, the ink adheres to the portion where the ink repulsion layer is missing, and a problem arises in that a satisfactory printed matter cannot be obtained.

In order to solve such a problem, Japanese Patent Publication Sho 6
No. 1-3417, Japanese Examined Patent Publication No. 61-54217,
Japanese Patent Publication No. 63-19864, Japanese Patent Publication No. 63-2230
No. 3, JP-B-63-23547, JP-A-62.
-163056, JP-A-63-63045, JP-A-63-222896, and JP-A-64-3.
4793, JP-A-64-49688, JP-A-1-167843, and JP-A-1-228898 disclose a method of applying an ink-repellent substance to a portion where an ink-repellent layer is missing, and an ink. A method of attaching a repulsive sheet is disclosed.

However, when the above-mentioned method is used, the adhesive force between the formed ink-repelling portion and the lower photosensitive layer is insufficient, and the corrected ink-repelling portion is missing during printing, resulting in ink inking. There was a problem that it did. In particular, such a problem remarkably occurs when printing for a long time or when printing a large amount.

[0010]

The present invention was devised in order to improve the various drawbacks of the prior art, and the corrected ink repulsion portion is not lost even when printing for a long time or a large amount of printing. It is to provide a method for correcting a waterless planographic printing plate.

[0011]

SUMMARY OF THE INVENTION The object of the present invention is as follows.
It is achieved by the following waterless lithographic printing plate correction method. That is, (1) In a method for correcting a defect portion of an ink repellent layer formed on a plate surface of a waterless lithographic printing plate, which comprises a photosensitive layer and an ink repellent layer laminated in this order on a support, To (a) and (b) in a method for correcting a waterless planographic printing plate, which comprises applying a correction liquid mainly composed of components (c) to
And (c) each of the components is divided into two or three types to prepare a correction liquid preparation liquid, and the correction liquid preparation liquid is mixed immediately before coating or applied in any order. How to fix waterless planographic printing plate.

(A) Hydroxyl group-containing organosiloxane.

(B) Hydrogen siloxane.

(C) Aluminum, barium, beryllium, cadmium, calcium, cerium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gold, hafnium, holmium, indium, iridium, iron, lanthanum, lead, lithium, Lutetium, magnesium, manganese, molybdenum, neodymium, nickel, palladium, potassium, praseodymium, rhodium, ruthenium, samarium, scandium, silver, sodium, strontium, terbium, thallium, thorium, thulium, uranium, vanadium, ytterbium, yttrium, zinc, A complex containing at least one element selected from the group of zirconium.

(2) In a method of correcting a defective portion of an ink repellent layer formed on a plate surface of a waterless lithographic printing plate, which comprises a photosensitive layer and an ink repellent layer laminated in this order on a support, ) To (c) A correction method mainly comprising components is applied to the waterless lithographic printing plate.

(A) Vinyl group-containing organosiloxane.

(B) Hydrogen siloxane.

(C) Aluminum, barium, beryllium, cadmium, calcium, cerium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gold, hafnium, holmium, indium, iridium, iron, lanthanum, lead, lithium, Lutetium, magnesium, manganese, molybdenum, neodymium, nickel, palladium, potassium, praseodymium, rhodium, ruthenium, samarium, scandium, silver, sodium, strontium, terbium, thallium, thorium, thulium, uranium, vanadium, ytterbium, yttrium, zinc, A complex containing at least one element selected from the group of zirconium.

(3) In a method of correcting a defective portion of an ink repellent layer formed on a plate surface of a waterless lithographic printing plate, which comprises a photosensitive layer and an ink repellent layer laminated in this order on a support, )-(C) In the method for correcting a waterless lithographic printing plate, which comprises mainly applying a correction liquid,
Each of the components (a), (b) and (c) is divided into two or three types to prepare a correction liquid preparation liquid, and the correction liquid preparation liquid is mixed immediately before coating or in any order. A method for correcting a waterless planographic printing plate, which is characterized in that it is applied by.

(A) Hydroxyl group-containing organosiloxane.

(B) A compound represented by the following general formula (I).

R1 _n SiX _4-n (I) (In the formula, n is an integer of 0 to 3, R 1 is an alkyl group,
An alkenyl group, an aryl group or a monovalent group in which these are combined are represented by a halogen atom, an amino group,
It may have a functional group such as a hydroxy group, an alkoxy group, an aryloxy group, an acryloxy group, a methacryloxy group, and a mercapto group. X is at least one selected from the group consisting of a hydroxyl group, an alkoxy group, an acetyl group, a ketoxime group and a halogen atom. ) (C) Aluminum, barium, beryllium, cadmium, calcium, cerium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gold, hafnium, holmium, indium, iridium, iron, lanthanum, lead, lithium, lutetium, Magnesium, manganese, molybdenum, neodymium, nickel, palladium, potassium, praseodymium, rhodium,
Ruthenium, samarium, scandium, silver, sodium, strontium, terbium, thallium, thorium, thulium, uranium, vanadium, ytterbium,
A complex containing at least one element selected from the group of yttrium, zinc and zirconium.

By using the method for correcting a waterless lithographic printing plate having the above-described structure, the correction of the waterless lithographic printing plate in which the corrected ink repulsion portion is not lost even when printing for a long time or a large amount of printing is performed. A method can be provided.

The structure of the present invention will be described more specifically below.

First, the waterless planographic printing plate used in the present invention may be a waterless planographic printing plate in which a photosensitive layer and an ink repellent layer are laminated in this order on a support, and there is no positive type waterless planographic printing plate. The planographic printing plate or the negative type waterless planographic printing plate may be used without any particular limitation.

The support referred to herein may be any of those used in ordinary waterless lithographic printing plates or those proposed, or may be used as it is, with a primer layer provided on the upper layer. It may be a support.

Further, the photosensitive layer referred to herein may be any photosensitive layer proposed in a normal waterless planographic printing plate. It may be a positive type photosensitive layer or a negative type photosensitive layer and is not particularly limited.

Examples of the ink repellent layer include those using silicone rubber and those using fluororesin. However, the ink repellent layer is not limited to these, and the ink repellent that can be used for waterless planographic printing plates is used. Any layer can be used.
Among these, the ink repellent layer using silicone rubber is preferable in terms of easy material supply.

The waterless planographic printing plate as described above is coated with a thin protective film having a plane or an uneven surface on the surface of the ink repellent layer before development, by laminating or thin plastic sheet-like material or In some cases, a protective layer is provided by transfer, but the present invention is sufficiently effective for such a waterless lithographic printing plate.

Further, the waterless planographic printing plate mainly means a printing plate which has been subjected to an ordinary exposure and development treatment, but it may be an untreated printing plate in which a part of the ink repellent layer is missing. . At this time, as the exposure method, it is possible to use a conventionally proposed method using a mercury lamp, a carbon arc lamp, a xenon lamp, a metal halide lamp, a tungsten lamp, a fluorescent lamp or the like. Further, the development can be carried out using a developing solution usually proposed for a waterless planographic printing plate.

In the present invention, the non-image area means the ink repellent layer of the waterless planographic printing plate, and the surface of the ink repellent layer may be after exposure and development treatment or inking treatment. Well, it may be completely untreated.

In the present invention, the image area means the ink-receptive surface other than the above-mentioned non-image area.

Next, the correction fluid used in the present invention will be described.

A silicone composition is used as the correction fluid in the present invention. These compositions include
There are three types shown below.

(1) A silicone composition mainly composed of the following components (a) to (c).

(A) Hydroxyl group-containing organosiloxane.

(B) Hydrogen siloxane.

(C) Aluminum, barium, beryllium, cadmium, calcium, cerium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gold, hafnium, holmium, indium, iridium, iron, lanthanum, lead, lithium, Lutetium, magnesium, manganese, molybdenum, neodymium, nickel, palladium, potassium, praseodymium, rhodium, ruthenium, samarium, scandium, silver, sodium, strontium, terbium, thallium, thorium, thulium, uranium, vanadium, ytterbium, yttrium, zinc, A complex containing at least one element selected from the group of zirconium.

Examples of the hydroxyl group-containing organic siloxane include linear organic polysiloxanes having a molecular weight of 200 to several million and having hydroxyl groups at both ends, but those having a hydroxyl group at the inside instead of at the terminal may be used. It may have a hydroxyl group. In particular, in order to sufficiently bring out the ink resilience, it is necessary that 40% or less of the organic groups are vinyl, phenyl, vinyl halide, and phenyl halide, and 60% or more of the organic groups are methyl groups or ethyl groups. preferable. The molecular weight is preferably several thousand to several hundred thousand. If the molecular weight is too small, it may be lost by volatilization during coating and drying, and if the molecular weight is too large, the viscosity becomes high and the workability deteriorates, so the above range is preferred. Specific examples thereof include, but are not limited to, dimethylpolysiloxane having hydroxyl groups at both terminals, methylethylpolysiloxane having hydroxyl groups at both terminals, and methylphenylpolysiloxane having hydroxyl groups at both terminals.

As the hydrogen siloxane, Si
It is not particularly limited as long as it is a siloxane having an H group, and may have any structure or molecular weight, but preferably has a molecular weight of 2
It is a hydrogen-containing polysiloxane having a methyl group of 0 to several millions, more preferably a methyl-containing hydrogen polysiloxane having a molecular weight of several thousand to several hundreds of thousands. In order to sufficiently bring out the ink resilience, it is preferred that 40% or less of the organic groups are vinyl, phenyl, vinyl halide and phenyl halide, and 60% or more of the organic groups are methyl groups or ethyl groups. Also, as the molecular weight,
If the molecular weight is too small, it may be lost by volatilization during coating and drying, and if the molecular weight is too large, the viscosity becomes high and the workability deteriorates, so the above range is preferred.

Specific examples of the complex include those shown below, but the complex is not limited thereto and may be a complex containing at least one of the above-mentioned elements.

Aluminum (III) di-S-butoxide ethyl acetoacetate, aluminum (III)
Diisopropoxide ethyl acetoacetate, aluminum (III) 2,4-pentanedionate, barium 2,4-pentanedionate, beryllium 2,4-pentanedionate, cadmium 2,4-pentanedionate, calcium hexafluoro Pentanedionate,
Cerium (III) 2,4-pentanedionate, chromium (III) benzoylacetonate, chromium (II
I) 2,4-pentanedionate, cobalt (II)
2,4-pentanedionate, cobalt (III) 2,
4-pentanedionate, cobalt (II) acetylacetonate, cobalt (II) acetate, cobalt (II) chloride, copper (II) benzoylacetonate, copper (II) ethylacetoacetate, copper (II)
2,4-pentanedionate, copper (II) 2,2,6
6-trimethyl-3,5-heptanedionate, copper (I
I) acetylacetonate, dysprosium 2,4-pentanedionate, erbium 2,4-pentanedionate, europium (III) pentanedionate, gadolinium (III) 2,4-pentanedionate, gallium (III) 2, 4-pentanedionate, gold (diethyl) 2,4-pentanedionate, hafnium 2,4
-Pentanedionate, holmium 2,4-pentanedionate, indium 2,4-pentanedionate, iridium (III) 2,4-pentanedionate, iron (III) benzoylacetonate, iron (III) 2,
4-pentanedionate, iron (III) trifluoropentanedionate, iron (III) acetylacetonate, lanthanum 2,4-pentanedionate, lead (II)
Hexafluoropentanedionate, lead (II) 2,
4-pentanedionate, lead (II) 2,2,6,6-
Tetramethyl-3,5-heptanedionate, lead (I
I) Acetylacetonate, lithium 2,4-pentanedionate, ruthenium 2,4-pentanedionate,
Magnesium 2,4-pentanedionate, manganese (II) 2,4-pentanedionate, manganese (II
I) 2,4-pentanedionate, manganese (III)
Acetylacetonate, molybdenum (IV) oxide bis (2,4-pentanedionate), neodymium (II
I) 2,4-pentanedionate, nickel (II)
2,4-pentanedionate, nickel (II) acetylacetonate, palladium 2,4-pentanedionate, potassium 2,4-pentanedionate, praseodymium 2,4-pentanedionate, rhodium (III)
2,4-pentanedionate, ruthenium (III)
2,4-Pentanedionate, Samarium (III)
2,4-pentanedionate, scandium (III)
2,2,6,6-tetramethyl-3,5-heptanedionate, silver (I) 2,4-pentanedionate, sodium hexafluoropentanedionate, strontium hexafluoropentanedionate, terbium 2,
4-pentanedionate, thallium benzoyl acetate, thallium 2,4-pentanedionate, thorium 2,4-pentanedionate, thulium 2,4-pentanedionate, uranium (IV) oxide 2,4-pentanedionate, Vanadium (III) oxide bis (2,4-pentanedionate), vanadium (II
I) 2,4-pentanedionate, vanadium (II
I) Acetylacetonate, ytterbium 2,4-pentanedionate, yttrium 2,4-pentanedionate, zinc 2,4-pentanedionate, zinc acetylacetonate, zirconium 2,4-pentanedionate, zirconium trifluoro Pentanedionate,
Zirconium acetylacetonate, etc. Of these, preferred are cobalt (II) acetylacetonate,
Cobalt (II) acetate, copper (II) benzoylacetonate, copper (II) ethylacetoacetate, copper (II) acetylacetonate, iron (III) acetylacetonate, lead (II) acetylacetonate, manganese (III) Acetylacetonate, nickel (II
I) Acetylacetonate, vanadium (III) acetylacetonate, zinc acetylacetonate, zirconium acetylacetonate and the like.

Other than these, siloxane or silane compound having a reactive group, siloxane or silane compound having no reactive group, etc. may be added. For example, polydimethylsiloxane having no reactive group, polydiethylsiloxane having no reactive group, polydimethylsiloxane having vinyl groups at both ends, polydimethylsiloxane having an internal vinyl group, or tetraacetoxysilane, tetra (methylethylketoxime) Examples include silane, tetramethoxysilane, methyltriacetoxysilane, ethyltriacetoxysilane, methyltris (methylethylketoxime) silane, ethyltris (methylethylketoxime) silane, vinyltris (methylethylketoxime) silane, methyltrimethoxysilane, and methyltriethoxysilane. However, it is not limited to these.

Further, from the viewpoints of improving the coating performance of the correction liquid, accelerating curing, improving workability, etc., known catalysts, surfactants, fillers, dyes, pigments, pH indicators, organic acids, inorganic acids, curing It is optional to add an appropriate amount of an inhibitor, various thermosetting compositions, room temperature curable compositions, photocurable compositions and the like as additives. It is usually preferable to add these additives to such an extent that the ink repellency after curing of the correction liquid can be maintained.

The mixing ratio of each component of the correction solution is not particularly limited, but preferably 0.1 to 10,000 parts by weight of hydrogen siloxane and 0.001 to 1 to 100 parts of complex with respect to 100 parts by weight of the above-mentioned hydroxyl group-containing organosiloxane. 10
0 parts by weight, 0 to 100 each of the above additives as required
It is preferable to add 100 parts by weight. In particular, with respect to 100 parts by weight of the hydroxyl group-containing organosiloxane, 1 to 1000 parts by weight of hydrogen siloxane and 0.01 part of the complex are used.
-20 parts by weight, and 0-1 each of the above additives as required.
It is preferable to add 100 parts by weight.

Although such a correction solution may be used as it is as a stock solution, it is usually diluted with an appropriate organic solvent before use. Such an organic solvent is not particularly limited, but hexane, heptane, an aromatic hydrocarbon solvent such as octane, an aromatic hydrocarbon solvent such as benzene, toluene, xylene, a ketone solvent such as acetone, methyl ethyl ketone, and methyl isobutyl ketone. , Ether solvents such as tetrahydrofuran and dioxane, and polar solvents such as N, N-dimethylformamide. Among these, a solvent having a relatively low boiling point or a solvent that evaporates quickly in the air is preferable from the viewpoint of smoothing the curing after coating.

(2) A silicone composition mainly composed of the following components (a) to (c).

(A) Vinyl group-containing organosiloxane.

(B) Hydrogen siloxane.

(C) Aluminum, barium, beryllium, cadmium, calcium, cerium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gold, hafnium, holmium, indium, iridium, iron, lanthanum, lead, lithium, Lutetium, magnesium, manganese, molybdenum, neodymium, nickel, palladium, potassium, praseodymium, rhodium, ruthenium, samarium, scandium, silver, sodium, strontium, terbium, thallium, thorium, thulium, uranium, vanadium, ytterbium, yttrium, zinc, A complex containing at least one element selected from the group of zirconium.

Examples of the vinyl group-containing organic siloxane include linear organic polysiloxanes having a molecular weight of 200 to several million and a vinyl group structure at both ends, but those having a vinyl group inside instead of at the ends may be used. It may have a vinyl group both inside. In particular, in order to sufficiently bring out the ink resilience, it is necessary that 40% or less of the organic groups are hydroxyl groups, phenyl, vinyl halides, and phenyl halides, and 60% or more of the organic groups are methyl groups or ethyl groups. preferable. The molecular weight is preferably several thousand to several hundred thousand. If the molecular weight is too small, it may be lost by volatilization during coating and drying, and if the molecular weight is too large, the viscosity becomes high and the workability deteriorates, so the above range is preferred. Specific examples thereof include, but are not limited to, dimethyl polysiloxane having vinyl groups at both ends, methyl ethyl polysiloxane having vinyl groups at both ends, and methylphenyl polysiloxane having vinyl groups at both ends.

As the hydrogen siloxane,
The same thing as (1) is mentioned. Also, the complex is (1)
And the same.

Other than these, siloxane or silane compound having a reactive group, siloxane or silane compound having no reactive group, etc. may be added. For example, polydimethylsiloxane having no reactive group, polydiethylsiloxane having no reactive group, polydimethylsiloxane having hydroxyl groups at both ends, polydimethylsiloxane having an internal hydroxyl group, or tetraacetoxysilane, tetra (methylethylketoxime) silane, Examples include tetramethoxysilane, methyltriacetoxysilane, ethyltriacetoxysilane, methyltris (methylethylketoxime) silane, ethyltris (methylethylketoxime) silane, vinyltris (methylethylketoxime) silane, methyltrimethoxysilane, and methyltriethoxysilane. It is not limited to these.

Further, from the viewpoints of improving the coating performance of the correction liquid, accelerating curing, improving workability, etc., known catalysts, surfactants, fillers, dyes, pigments, pH indicators, organic acids, inorganic acids, curing It is optional to add an appropriate amount of an inhibitor, various thermosetting compositions, room temperature curable compositions, photocurable compositions and the like as additives. It is usually preferable to add these additives to such an extent that the ink repellency after curing of the correction liquid can be maintained.

The mixing ratio of each component of the correction fluid is not particularly limited, but preferably 0.1 to 10000 parts by weight of hydrogen siloxane and 0.001 part of the complex with respect to 100 parts by weight of the above vinyl group-containing organosiloxane. ~ 1
00 parts by weight, if necessary, each of the above additives may be added in an amount of 0 to 10
It is preferable to add 000 parts by weight. In particular, 1 to 1000 parts by weight of hydrogen siloxane and 0.
01 to 20 parts by weight, if necessary, each of the above additives is 0
It is preferable to add up to 100 parts by weight.

Although such a correction solution may be used as it is as a stock solution, it is usually diluted with an appropriate organic solvent before use. As the organic solvent, those similar to (1) can be mentioned.

(3) A silicone composition mainly composed of the following components (a) to (c).

(A) Hydroxyl group-containing organosiloxane.

(B) A compound represented by the following general formula (I).

R1 _n SiX _4-n (I) (In the formula, n is an integer of 0 to 3, R 1 is an alkyl group,
An alkenyl group, an aryl group or a monovalent group in which these are combined are represented by a halogen atom, an amino group,
It may have a functional group such as a hydroxy group, an alkoxy group, an aryloxy group, an acryloxy group, a methacryloxy group, and a mercapto group. X is at least one selected from the group consisting of a hydroxyl group, an alkoxy group, an acetyl group, a ketoxime group and a halogen atom. ) (C) Aluminum, barium, beryllium, cadmium, calcium, cerium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gold, hafnium, holmium, indium, iridium, iron, lanthanum, lead, lithium, lutetium, Magnesium, manganese, molybdenum, neodymium, nickel, palladium, potassium, praseodymium, rhodium,
Ruthenium, samarium, scandium, silver, sodium, strontium, terbium, thallium, thorium, thulium, uranium, vanadium, ytterbium,
A complex containing at least one element selected from the group of yttrium, zinc and zirconium.

As the hydroxyl group-containing organosiloxane,
The same thing as (1) is mentioned. Specific examples of the compound represented by the general formula (I) include tetraacetoxysilane, tetra (methylethylketoxime) silane, tetramethoxysilane, methyltriacetoxysilane, ethyltriacetoxysilane, methyltris (methylethylketoxime) silane, ethyltris (methylethylketo). Oxime) silane, vinyltris (methylethylketoxime) silane, methyltrimethoxysilane, methyltriethoxysilane, phenyltriacetoxysilane,
Examples include, but are not limited to, 3-aminopropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, methyltrichlorosilane, ethyltrichlorosilane, and the like.

The complex may be the same as that of (1).

In addition to these, siloxane or silane compound having a reactive group, siloxane or silane compound having no reactive group, etc. may be added. For example, polydimethylsiloxane having no reactive group, polydiethylsiloxane having no reactive group, polydimethylsiloxane having a vinyl group structure at both ends, polydimethylsiloxane having an internal vinyl group structure, or the hydrodimethyl group shown in (1). Examples include, but are not limited to, gensiloxane.

Further, from the viewpoints of improving the coating performance of the correction liquid, accelerating curing, improving workability, etc., known catalysts, surfactants, fillers, dyes, pigments, pH indicators, organic acids, inorganic acids, curing It is optional to add an appropriate amount of an inhibitor, various thermosetting compositions, room temperature curable compositions, photocurable compositions and the like as additives. It is usually preferable to add these additives to such an extent that the ink repellency after curing of the correction liquid can be maintained.

The mixing ratio of each component of the correction fluid is not particularly limited, but preferably 0.1 to 10000 parts by weight of the compound represented by the general formula (I) with respect to 100 parts by weight of the above hydroxyl group-containing organosiloxane. 0.001 to complex
100 parts by weight, 0 to 1 of each of the above additives as required
It is preferable to add 0000 parts by weight. In particular, 1 to 1000 parts by weight of the compound represented by the general formula (I), 0.01 to 20 parts by weight of the complex, and 0 to 0 parts by weight of the above additives are added to 100 parts by weight of the hydroxyl group-containing organosiloxane. It is preferable to add up to 100 parts by weight.

Such a correction solution may be used as it is, but it is usually diluted with an appropriate organic solvent before use. As the organic solvent, those similar to (1) can be mentioned.

The correction fluids shown in the above (1) to (3) are
Regarding (1), it may be mixed in advance, but
If it must be stored for a long period of time before it is used as a correction fluid, divide it appropriately into two types of correction fluid production liquids, and in some cases, three types of correction fluid production liquids, and use them when making corrections. It is possible to use them in a mixed order immediately before coating or correction in any order. There is no particular limitation on how to divide the liquid, and the components (a), (b), and (c) of the correction liquid of (1) to (3) can be divided as follows.

(Liquid A) A liquid mainly composed of the component (a) and the component (b).

(Liquid B) A liquid mainly composed of the component (c).

(Liquid A) A liquid mainly composed of the component (a) and the component (c).

(B liquid) A liquid mainly composed of the component (b).

(Liquid A) A liquid mainly composed of the component (b) and the component (c).

(Liquid B) A liquid mainly composed of the component (a).

(Liquid A) A liquid mainly composed of the component (a).

(B liquid) A liquid mainly composed of the component (b).

(C liquid) A liquid mainly composed of the component (c).

When the liquid is divided into a few kinds in this way,
It is optional to add the above-mentioned additives in appropriate amounts to (A liquid) to (C liquid).

Next, details of a method for correcting a waterless planographic printing plate using such a correction liquid will be described.

The following two are preferable examples.

A sheet having a hole having a halftone dot structure is attached on the plate surface including the defective portion of the ink repellent layer, and a correction liquid, which is an ink repellent solution, is applied and cured on the sheet, and then the sheet is formed. Is removed to form an ink repellent portion having a halftone dot structure.

An ink-receptive sheet having a hole having a halftone dot structure is attached on the plate surface including the defective portion of the ink repellent layer, and a correction liquid, which is an ink repellent solution, is applied and cured on the sheet. To form an ink repulsion part with a halftone dot structure.

That is, the sheet having a halftone dot structure according to the present invention is roughly classified into the following two types.

A sheet which is attached to the plate surface including the defective portion of the ink repellent layer, is coated with an ink repellent solution, is cured, and is then removed.

An ink-receptive sheet to be stuck on the plate surface including the defective portion of the ink repellent layer.

A sheet to be removed after being converted into a sheet.

Strictly speaking, is included in, but is quite special, so it is preferable to classify it into two types.

Hereinafter, these sheets will be described in order.

As the material of the sheet (1), the ink repellent solution is applied and cured, and then removed.
There is no particular limitation as long as it can be adhered to the ink receiving layer by itself or through an adhesive and can form a hole having a halftone dot structure. Specifically, paper, polyethylene, polypropylene, polystyrene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyethylene naphthalate, various plastics such as cellophane, which become sheets, rubber elasticity such as chloroprene rubber, NBR, and silicone rubber. And those having ink repulsion such as Teflon, metal plates such as aluminum, copper, zinc, steel, etc., but other than these may be used, each of which may be used alone or in combination of two or more. You may use it in combination. Especially polyester, polypropylene, silicone rubber,
Teflon or the like is preferable because it is a thin film and strong. Also,
As the adhesive, various kinds of commonly used adhesives and polymers can be used, and are not particularly limited, but in consideration of the fact that they are attached onto the ink receiving layer and removed after the work is completed, A material having no property or a material that does not remain on the plate surface when the sheet is removed is preferable.

The material of the sheet (1) is not particularly limited as long as it is ink receptive and capable of forming a hole having a halftone dot structure. Specifically, paper, polyethylene,
Polypropylene, polyester such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, various plastics such as cellophane that can be used as a sheet, chloroprene rubber or NBR that has rubber elasticity, aluminum, copper, zinc, steel, etc. Examples of the metal plate include metal plates and the like. Other than these, they may be used alone or in combination of two or more kinds. Particularly, polyester and polypropylene are preferable because they are thin and strong. As the adhesive, the same ones as mentioned above can be mentioned, but in this case, since the sheet is not removed, even a material having ink repulsion does not pose any problem, and an ordinary adhesive which cannot be removed once attached is used. May be. When the sheet of No. 2 is used, the sheet is not peeled off, and therefore the adhesive must firmly adhere to the printing plate by overcoming the strong share applied to the printing surface during printing. Therefore, the adhesive force is preferably 50 g / cm or more, more preferably 100 g / cm or more in the following measuring method.

The following method is used to measure the adhesive strength.

That is, in the environment of 23 ° C. and 63% RH, Tensilon (manufactured by Toyo Baldwin Co., Ltd.) was used for 16
After mounting the sample (the sheet is previously attached to the plate surface) so that the peeling angle is 0 ° C., 20 mm /
The sheet is peeled from the plate surface at a peeling speed of minutes. The peel resistance value is measured with a load cell (maximum 1 kg) and recorded in a recorder. The recorded value (weight) is standardized by the width (length) of the sheet, and this is defined as the above-mentioned adhesive force. Generally, the unit of g / cm is used.

Next, a method for making holes having a halftone dot structure in the sheet having holes having a halftone dot structure used in the present invention will be described.

Originally, the halftone dots in the pattern are formed by halftone dot separation at the same time when the color of the photograph as the original of the printed matter is separated by the scanner. Therefore, it is preferable to use the information when the color separation of this scanner is made and make holes in the sheet according to this information, but if it is not necessary to make halftone dots of the exact same structure, simply make holes. You may open it. As a means for making a hole, laser light, ultraviolet light, light such as infrared light, heat, electricity, an electron beam, or a mechanical means using a needle having a minute diameter is used, but is not limited to these. Any method can be used as long as it can faithfully reproduce the halftone dot shape by using the information on the halftone dot shape obtained by the scanner. For example, when laser light is used, there is a method in which the laser light is narrowed down to the size of the halftone dot based on the information obtained from the scanner to make a hole in the sheet.

[0094]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited thereto.

Example 1 An aluminum plate having a thickness of 0.30 mm (manufactured by Sumitomo Light Metal Co., Ltd.) was dipped in a 3% sodium hydroxide aqueous solution to be degreased, washed with water and dried to obtain a support.

The following primer composition was coated on the thus obtained support and heat-treated at 200 ° C. for 2 minutes to give 5
A μm primer layer was provided.

(A) 75 parts by weight of polyurethane resin "Milactone" P22S (manufactured by Nippon Polyurethane Co., Ltd.) (b) 15 parts by weight of Buroxy isocyanate "Taketate" B830 (manufactured by Takeda Pharmaceutical Co., Ltd.) ( c) Epoxy phenol urea resin "SJ9372" 10 parts by weight (manufactured by Kansai Paint Co., Ltd.) (d) Titanium oxide 10 parts by weight (e) Dimethylformamide 790 parts by weight Then, the following composition on the primer layer: And then heat-dried at 115 ° C. for 1 minute to form a photosensitive layer having a thickness of 2 μm.

(A) Polyurethane resin “Milactone” P22S 40 parts by weight (manufactured by Nippon Polyurethane Co., Ltd.) (b) Compound in which 37 parts by weight of glycidyl methacrylate and 4 mol of glycidyl methacrylate are added to 1 mol of metaxylylenediamine (c) Acrylic acid (14 parts by weight) reacted with hydroxyl groups at both ends of 1,9-nonanediol (d) 4,4'-bis (diethylamino) benzophenone (8 parts by weight) (e) Victoria Pure BOH benzenesulfonate 1 part by weight (f) 900 parts by weight of propylene glycol monomethyl ether Then, a silicone comprising the following composition on the photosensitive layer.
The rubber composition was applied under a stream of dry nitrogen and kept at 115 ° C for 3
It was heat-cured for 1 minute to form a silicone rubber layer of 2 μm.

(A) Polydimethylsiloxane having hydroxyl groups at both ends 90 parts by weight (molecular weight 40000) (b) Ethyltriacetoxysilane 9.9 parts by weight (c) Dibutyltin dilaurate 0.1 parts by weight (d) “ 900 parts by weight of Isopar "E" (manufactured by Exxon Chemical Co., Ltd.) The laminated plate obtained as described above is matted with a 12 μm-thick single-sided matte polyester film "Lumira" (manufactured by Toray Co., Ltd.) Laminate using a calendar roller with the uncoated surface in contact with the silicone rubber layer.
As a protective layer, a positive type waterless planographic printing plate precursor was obtained.

For image evaluation, a positive film having halftone dots of 200 lines / inch 1 to 99% and a gray scale (G / S) having an optical density difference of 0.15 were stretched on a polyester film for stretching. Included, Nuark FT261V UN
DS ULTRA-PLUSFIIPTOP PLAT
After vacuum contact for 30 seconds using an EMAKER vacuum exposure machine, 30 count exposures were carried out and the laminate film was peeled off.

Then, using the automatic developing device TWL1160 (manufactured by Toray Industries, Inc.), a pretreatment liquid PP-F having a liquid temperature of 40 ° C.
(Manufactured by Toray Industries, Inc.), pure water was used as a developing solution, and a solution having the following composition was used as a dyeing solution for development to obtain a waterless planographic printing plate.

(A) Ethyl carbitol 18 parts by weight (b) Water 79.9 parts by weight (c) Crystal violet 0.1 parts by weight (d) 2-Ethylhexanoic acid 2 parts by weight Water thus obtained Separately from the lithographic printing plate, using the same waterless lithographic printing plate as described above and the positive film as described above, the light exposure is blocked so that a part of the ink repellent layer of the pattern is not exposed, and the same exposure and development process as above is performed. Then, a waterless planographic printing plate having a defect in a part of the ink repellent layer in the pattern was obtained.

The waterless lithographic printing plate having defects in a part of the ink repellent layer thus obtained was subjected to pattern correction using the following.

Silicone rubber sheet in which halftone dot holes having the same shape as the positive film are formed by a needle Silicone gum solution having the following composition (correction solution) (a) Polydimethylsiloxane having vinyl groups at both ends 88 parts by weight (molecular weight 30000) (b) (CH ₃ ) ₃ SiO (Si (CH ₃ ) ₂ O) _30- (SiH (CH ₃ ) O) ₁₀ Si (CH ₃ ) ₃ 10 parts by weight (c) Poly having both terminal methyl groups Dimethylsiloxane 10 parts by weight (molecular weight 30000) (d) Iron (III) acetylacetonate 2 parts by weight (e) Acetylacetone 10 parts by weight (f) Methylisobutylketone 130 parts by weight First, the silicone rubber sheet is "prit" (KOKUYO). A lipstick type paste (manufactured by KK) was applied to the defect portion, a silicone gum solution was applied from above, and the mixture was dried at room temperature for 10 minutes. After that, when the sheet was peeled off, the defect portion was corrected, and the same pattern as the waterless planographic printing plate having no defect could be formed.

Using the two types of waterless planographic printing plates thus obtained, they were mounted on an offset printing machine (Komori Sprint 4-color machine), and "Dryocolor" black ink manufactured by Dainippon Ink and Chemicals, Inc. was used. When printing on high-quality paper, no difference was found between the printed matter printed using the printing plate with the defects corrected and the printed matter printed with the uncorrected complete printing plate.

Example 2 A printing plate having a defect in a part of the ink repellent layer obtained in the same manner as in Example 1 was subjected to pattern correction using the following.

Polypropylene film sheet in which halftone dots having the same shape as the positive film are punched by laser light "
Trefan ”(manufactured by Toray Industries, Inc.) Silicone gum solution having the following composition (correction solution) (solution A) (a) polydimethylsiloxane having vinyl groups at both ends 90 parts by weight (molecular weight 25000) (b) methyl ethyl ketone 110 parts (B _{solution) (a) (CH 3)} 3 SiO (Si (CH 3) 2 O) 20 - (SiH (CH 3) O) 15 Si (CH 3) 3 8 parts by weight (b) having hydroxyl groups at both ends Polydimethylsiloxane having 10 parts by weight (molecular weight 50000) (c) 2 parts by weight of nickel (II) 2,4-pentanedionate (d) 10 parts by weight of acetylacetone (e) 70 parts by weight of methyl ethyl ketone First, a polypropylene film sheet is prepared. "SH-4
280 "(made by Toray Dow Corning Silicone Co., Ltd .: silicone adhesive) is applied to the defect portion, and the silicone gum solution (solution A) and solution (B) are applied in a weight ratio of 1: 1. Then, it was applied in this order and dried at room temperature for 15 minutes.After that, the excess liquid on the sheet was wiped off using "Kimwipe" (wiper manufactured by Tojo Kimberley Co., Ltd.), and unnecessary liquid was removed cleanly. As a result, the silicone rubber was formed only in the halftone dot holes having the same shape as the positive film, and the same pattern as the waterless planographic printing plate without defects could be formed.

Using the two types of waterless planographic printing plates thus obtained, they were attached to an offset printing machine (Komori Sprint 4-color machine), and "Dryocolor" black ink manufactured by Dainippon Ink and Chemicals, Inc. was used. When printing on high-quality paper, no difference was found between the printed matter printed using the printing plate with the defects corrected and the printed matter printed with the uncorrected complete printing plate.

Example 3 A support was obtained by forming a grain shape on the surface of an aluminum plate (made by Sumitomo Light Metal Co., Ltd.) having a thickness of 0.24 mm.

The following primer composition was coated on the support thus obtained and heat-treated at 200 ° C. for 2 minutes to give 5
A μm primer layer was provided.

(A) 2-Hydroxyethyl methacrylate, 100 parts by weight of methacrylic acid Copolymer resin with a molar ratio of dodecyl of 40/60 (molecular weight 40000) (b) 5 parts by weight of γ-methacryloxypropyltrimethoxysilane ( Toshiba Silicone Co., Ltd. (c) Zinc oxide (Sakai Chemical Co., Ltd., fine zinc oxide) 55 parts by weight (d) "KET-YELLOW402" 10 parts by weight (Dainippon Ink and Chemicals, Inc. yellow pigment) ) (E) Methyl lactate 650 parts by weight (f) Cyclohexanone 80 parts by weight Then, a photosensitive solution comprising the following composition was applied on the primer layer and heat-dried at 115 ° C. for 1 minute to form a photosensitive layer of 2 μm. It was

(A) 1,2-naphthoquinone-2-diazide-5-sulfone 90 parts by weight Chloride and phenol formaldehyde novolac resin (Sumitomo Durez: "Sumilite Resin" PR50 622) partially esterified product (elemental analysis method) (B) 4,4'-diphenylmethane diisocyanate 20 parts by weight (c) 2-hydroxyethyl methacrylate, methacrylic acid 10 parts by weight Dodecyl molar ratio 40/60 copolymer resin ( Molecular weight 40,000) (d) Tetrahydrofuran 780 parts by weight Next, on the above-mentioned photosensitive layer, a silicone-containing composition shown below was used.
The rubber composition was applied under a stream of dry nitrogen and kept at 115 ° C for 3
It was heat-cured for 1 minute to form a silicone rubber layer having a thickness of 2 μm.

(A) 100 parts by weight of polydimethylsiloxane having vinyl groups at both ends (molecular weight: 50,000) (b) (CH ₃ ) ₃ SiO (Si (CH ₃ ) ₂ O) _30- (SiH (CH ₃ ) O) ₁₀ Si (CH ₃ ) ₃ 9.8 parts by weight (c) Chloroplatinic acid / methylvinyl cyclic complex 0.1 parts by weight (d) Acetylacetone alcohol 0.1 parts by weight (e) Polydimethylsiloxane (molecular weight approx. 100,000) 10 parts by weight (f) "Isopar" E (manufactured by Exxon Chemical Co., Ltd.) 880 parts by weight On the laminated plate obtained as described above, a single-sided matt polypropylene film "Trefan" having a thickness of 8 μm ( Toray Co., Ltd.) with a non-matted surface in contact with the silicone rubber layer using a calendar roller
As a protective layer, a negative waterless planographic printing plate precursor was obtained.

A metal halide lamp (Idlefin 2000 manufactured by Iwasaki Electric Co., Ltd.) was used as the printing plate precursor.
The entire surface was exposed for 6 seconds with an illuminance of 11 mW / cm ^{2 using} a UV meter (Light Measure Type UV-402A manufactured by Oak Manufacturing Co., Ltd.).

For image evaluation, a negative film having halftone dots of 200 lines / inch 1 to 99% and a gray scale (G / S) having an optical density difference of 0.15 were stretched on a polyester film for stretching. Included, Nuark FT261V UN
DS ULTRA-PLUSFIIPTOP PLAT
After vacuum contact for 30 seconds using an EMAKER vacuum exposure machine, 30 count exposures were carried out and the laminate film was peeled off.

After that, an automatic developing device TWL1160 (manufactured by Toray Industries, Inc.) was used, a pretreatment liquid having the following composition at a liquid temperature of 40 ° C. was used, pure water was used as the developing liquid, and the following dyeing liquid was used as the dyeing liquid. Development was carried out using a liquid having the composition to obtain a waterless planographic printing plate.

(Composition of pretreatment solution) (a) 80 parts by weight of diethylene glycol (b) 14 parts by weight of diglycolamine (c) 6 parts by weight of water (staining solution) (a) 18 parts by weight of ethyl carbitol (b) Water 9 .9 parts by weight (c) Crystal Violet 0.1 parts by weight (d) 2-Ethylhexanoic acid 2 parts by weight In addition to the waterless lithographic printing plate thus obtained, the same waterless lithographic printing plate and the above Using a negative film and a negative film, the same exposure and development processing as above is performed so that part of the ink repellent layer of the pattern is exposed, and waterless lithographic printing with defects in part of the ink repellent layer in the pattern Got the edition.

The waterless lithographic printing plate having defects in a part of the ink repellent layer thus obtained was subjected to pattern correction using the following.

Silicone rubber sheet in which halftone dot holes having the same shape as the negative film are formed with a needle Silicone gum solution having the following composition (solution A) (a) 100 parts by weight of polydimethylsiloxane having hydroxyl groups at both ends (molecular weight 60,000) ) (B) Acetone 100 parts by weight (B liquid) (a) Tetraacetoxysilane 8 parts by weight (b) Polydimethylsiloxane having phenyl groups at both ends 8 parts by weight (molecular weight 100,000) (c) Copper (II) ethyl acetoacetate 2 parts by weight (d) Acetylacetone 2 parts by weight (e) Acetone 80 parts by weight First, the silicone rubber sheet of "Prit" (manufactured by Kokuyo Co., Ltd .: lipstick type glue) is attached to the defect portion, and then from above. The above silicone gum solution was applied and dried at room temperature for 10 minutes. After that, when the sheet was peeled off, the defect portion was corrected, and the same pattern as the waterless planographic printing plate having no defect could be formed.

The two types of waterless planographic printing plates thus obtained were mounted on an offset printing machine (Komori Sprint 4-color machine), and "Dryo Color" black ink manufactured by Dainippon Ink and Chemicals, Inc. was used. When printing on high-quality paper, no difference was found between the printed matter printed using the printing plate with the defects corrected and the printed matter printed with the uncorrected complete printing plate.

Example 4 A printing plate containing a defect in a part of the ink repellent layer obtained in the same manner as in Example 3 was subjected to pattern correction using the following.

Polypropylene film sheet “Trephan” (manufactured by Toray Industries, Inc.) in which halftone dots having the same shape as the negative film were formed by laser light (manufactured by Toray Industries, Inc.) Silicone gum solution having the following composition (correction solution) (solution A) ( a) 100 parts by weight of polydimethylsiloxane having hydroxyl groups at both ends (molecular weight 18000) (b) 100 parts by weight of hexane (solution B) (a) 10 parts by weight having at least 3 or more SiH groups at both ends and inside Hydrogen siloxane (Molecular weight 10,000) (b) Polydimethylsiloxane having methyl groups at both ends 10 parts by weight (Molecular weight 10000) (c) Cobalt (II) acetylacetonate 2 parts by weight (d) Acetylacetone 8 parts by weight (e) Cyclohexanone 70 parts by weight First, the polypropylene film sheet of 3-aminopropy Paste the defect portion by using triethoxysilane, silicone gum solution thereon and (A solution) (B
Liquid) in a weight ratio of 1: 1 and applied in this order at room temperature for 1
Dry for 5 minutes. After that, when the excess liquid on the sheet was wiped off using "Hize Gauze" (manufactured by Asahi Kasei Kogyo Co., Ltd.), unnecessary liquid was removed cleanly, and the holes in the halftone dot part of the same shape as the negative film were removed. Silicone rubber was formed only on the part, and the same pattern as the waterless planographic printing plate without defects could be formed.

The two types of waterless planographic printing plates thus obtained were mounted on an offset printing machine (Komori Sprint 4-color machine), and "Dryo Color" black ink manufactured by Dainippon Ink and Chemicals, Inc. was used. When used to print on high-quality paper, no difference was observed between the printed matter printed using the printing plate with the defects corrected and the printed matter printed with the uncorrected complete printing plate.

Example 5 In Example 1, the same operation as in Example 1 was carried out except that the correction liquid was changed as follows. As a result, good correction was possible as in Example 1. (The correction liquid is used by applying (A liquid) and (B liquid) in this order in a weight ratio of 1: 1.) (A liquid) (a) 44 parts by weight of polydimethylsiloxane having vinyl groups at both ends (molecular weight of 30,000) ) (B) Iron (III) acetylacetonate 1 part by weight (c) Acetylacetone 5 parts by weight (d) Methyl isobutyl ketone 50 parts by weight (solution B) (a) (CH ₃ ) ₃ SiO (Si (CH ₃ ) ₂ O) _30- (SiH (CH ₃ ) O) ₁₀ Si (CH ₃ ) ₃ 5 parts by weight (b) Polydimethylsiloxane having methyl groups at both ends 10 parts by weight (molecular weight 30000) (c) Methyl isobutyl ketone 35 parts by weight Example 6 When the same operation as in Example 1 was performed except that the correction fluid was changed as follows in Example 1, good correction was possible as in Example 1. (The correction fluid is (A fluid),
(B liquid) and (C liquid) are used by applying in a weight ratio of 1: 1: 1 in this order. ) (Liquid A) (a) Polydimethylsiloxane having vinyl groups at both ends 50 parts by weight (molecular weight 30000) (b) Methyl isobutyl ketone 50 parts by weight (B solution) (a) Iron (III) acetylacetonate 5 parts by weight (b) acetylacetone 25 parts by weight (c) 70 parts by weight of methyl isobutyl ketone (C _{solution) (a) (CH 3)} 3 SiO (Si (CH 3) 2 O) 30 - (SiH (CH 3) O) 10 Si (CH ₃ ) ₃ 20 parts by weight (b) Polydimethylsiloxane having methyl groups at both ends 10 parts by weight (molecular weight 30000) (c) Methyl isobutyl ketone 70 parts by weight

[0125]

Since the method for correcting a waterless lithographic printing plate of the present invention is configured as described above, it has excellent ink resilience and can be used even when printing for a long time or a large amount of ink. It can be a method of correcting a waterless planographic printing plate in which the repulsion part is not missing.

Claims (21)

[Claims] 1. A method of correcting a defective portion of an ink repellent layer formed on a plate surface of a waterless planographic printing plate comprising a photosensitive layer and an ink repellent layer laminated in this order on a support. ~ In a method of correcting a waterless planographic printing plate, which comprises applying a correction liquid mainly composed of component (c),
Each of the components (a), (b) and (c) is divided into two or three types to prepare a correction liquid preparation liquid, and the correction liquid preparation liquid is mixed immediately before coating or in any order. A method for correcting a waterless planographic printing plate, which is characterized in that it is applied by. (A) Hydroxyl group-containing organosiloxane. (B) Hydrogen siloxane. (C) Aluminum, barium, beryllium, cadmium, calcium, cerium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gold, hafnium, holmium, indium, iridium, iron, lanthanum, lead, lithium, lutetium, magnesium , Manganese, molybdenum, neodymium, nickel, palladium, potassium, praseodymium, rhodium,
Ruthenium, samarium, scandium, silver, sodium, strontium, terbium, thallium, thorium, thulium, uranium, vanadium, ytterbium,
A complex containing at least one element selected from the group of yttrium, zinc and zirconium. 2. The components (a), (b) and (c) are
The method for correcting a waterless lithographic printing plate according to claim 1, wherein the correction liquid is divided into two kinds of correction liquid preparation liquids (liquid A) and liquid (B) below. (Liquid A) A liquid mainly composed of components (a) and (b). (Liquid B) A liquid mainly composed of the component (c). 3. The components (a), (b) and (c),
The method for correcting a waterless lithographic printing plate according to claim 1, wherein the correction liquid is divided into two kinds of correction liquid preparation liquids (liquid A) and liquid (B) below. (Liquid A) A liquid mainly composed of components (a) and (c). (Liquid B) A liquid mainly composed of the component (b). 4. The components (a), (b) and (c) are
The method for correcting a waterless lithographic printing plate according to claim 1, wherein the correction liquid is divided into two kinds of correction liquid preparation liquids (liquid A) and liquid (B) below. (Liquid A) A liquid mainly composed of the component (a). (B liquid) A liquid mainly composed of components (b) and (c). 5. The components (a), (b) and (c) are replaced by
2. The method for correcting a waterless lithographic printing plate according to claim 1, wherein the correction liquid is divided into three kinds of correction liquid preparation liquids (liquid A), liquid B, and liquid C below. (Liquid A) A liquid mainly composed of the component (a). (Liquid B) A liquid mainly composed of the component (b). (C liquid) A liquid mainly composed of the component (c). 6. A method for correcting a defective portion of an ink repellent layer formed on a plate surface of a waterless lithographic printing plate, which comprises a photosensitive layer and an ink repellent layer laminated in this order on a support, which comprises: ~ A method for correcting a waterless planographic printing plate, which comprises applying a correction liquid mainly composed of the component (c). (A) Vinyl group-containing organosiloxane. (B) Hydrogen siloxane. (C) Aluminum, barium, beryllium, cadmium, calcium, cerium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gold, hafnium, holmium, indium, iridium, iron, lanthanum, lead, lithium, lutetium, magnesium , Manganese, molybdenum, neodymium, nickel, palladium, potassium, praseodymium, rhodium,
Ruthenium, samarium, scandium, silver, sodium, strontium, terbium, thallium, thorium, thulium, uranium, vanadium, ytterbium,
A complex containing at least one element selected from the group of yttrium, zinc and zirconium. 7. (a), (b) and (c) each component,
Separated into two or three types of correction liquid preparation liquids, and mixing the correction liquid preparation liquid immediately before coating,
The method for correcting a waterless planographic printing plate according to claim 6, wherein the steps are applied in an arbitrary order. 8. The components (a), (b) and (c) are replaced by
8. The method for correcting a waterless lithographic printing plate according to claim 7, wherein the correction liquid is divided into two kinds of correction liquid preparation liquids (liquid A) and liquid (B) below. (Liquid A) A liquid mainly composed of components (a) and (b). (Liquid B) A liquid mainly composed of the component (c). 9. The components (a), (b) and (c) are
8. The method for correcting a waterless lithographic printing plate according to claim 7, wherein the correction liquid is divided into two kinds of correction liquid preparation liquids (liquid A) and liquid (B) below. (Liquid A) A liquid mainly composed of components (a) and (c). (Liquid B) A liquid mainly composed of the component (b). 10. The method according to claim 7, wherein the components (a), (b) and (c) are divided into the following two types of correction liquid preparation liquids (solution A) and solution (B). How to fix the waterless planographic printing plate. (Liquid A) A liquid mainly composed of the component (a). (B liquid) A liquid mainly composed of components (b) and (c). 11. The method according to claim 11, wherein each of the components (a), (b) and (c) is divided into the following three types of correction liquid preparation liquids (liquid A), liquid B, and liquid C). The method for correcting a waterless planographic printing plate according to claim 7. (Liquid A) A liquid mainly composed of the component (a). (Liquid B) A liquid mainly composed of the component (b). (C liquid) A liquid mainly composed of the component (c). 12. A method for correcting a defective portion of an ink repellent layer formed on a plate surface of a waterless lithographic printing plate comprising a photosensitive layer and an ink repellent layer laminated in this order on a support, the method comprising: ~ In a method of correcting a waterless planographic printing plate, which comprises applying a correction liquid mainly composed of component (c),
Each of the components (a), (b) and (c) is divided into two or three types to prepare a correction liquid preparation liquid, and the correction liquid preparation liquid is mixed immediately before coating or in any order. A method for correcting a waterless planographic printing plate, which is characterized in that it is applied by. (A) Hydroxyl group-containing organosiloxane. (B) A compound represented by the following general formula (I). R1 _n SiX _4-n (I) (In the formula, n is an integer of 0 to 3, R 1 is an alkyl group,
An alkenyl group, an aryl group or a monovalent group in which these are combined are represented by a halogen atom, an amino group,
It may have a functional group such as a hydroxy group, an alkoxy group, an aryloxy group, an acryloxy group, a methacryloxy group, and a mercapto group. X is at least one selected from the group consisting of a hydroxyl group, an alkoxy group, an acetyl group, a ketoxime group and a halogen atom. ) (C) Aluminum, barium, beryllium, cadmium, calcium, cerium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gold, hafnium, holmium, indium, iridium, iron, lanthanum, lead, lithium, lutetium, Magnesium, manganese, molybdenum, neodymium, nickel, palladium, potassium, praseodymium, rhodium,
Ruthenium, samarium, scandium, silver, sodium, strontium, terbium, thallium, thorium, thulium, uranium, vanadium, ytterbium,
A complex containing at least one element selected from the group of yttrium, zinc and zirconium. 13. The method according to claim 12, wherein each of the components (a), (b) and (c) is divided into the following two types of correction liquid preparation liquids (solution A) and solution (B). How to fix the waterless planographic printing plate. (Liquid A) A liquid mainly composed of components (a) and (b). (Liquid B) A liquid mainly composed of the component (c). 14. The method according to claim 12, wherein each of the components (a), (b) and (c) is divided into the following two types of correction liquid preparation liquids (solution A) and solution (B). How to fix the waterless planographic printing plate. (Liquid A) A liquid mainly composed of components (a) and (c). (Liquid B) A liquid mainly composed of the component (b). 15. The method according to claim 12, wherein each of the components (a), (b) and (c) is divided into the following two types of correction liquid preparation liquids (liquid A) and liquid (B). How to fix the waterless planographic printing plate. (Liquid A) A liquid mainly composed of the component (a). (B liquid) A liquid mainly composed of components (b) and (c). 16. The method according to claim 16, wherein the components (a), (b) and (c) are divided into the following three kinds of correction liquid preparation liquids (liquid A), liquid (B) and liquid (C). The method for correcting a waterless planographic printing plate according to claim 12. (Liquid A) A liquid mainly composed of the component (a). (Liquid B) A liquid mainly composed of the component (b). (C liquid) A liquid mainly composed of the component (c). 17. The component (c) is aluminum, barium, beryllium, cadmium, calcium, cerium,
Chromium, cobalt, copper, gold, indium, iridium,
Iron, lanthanum, lead, lithium, lutetium, magnesium, manganese, nickel, palladium, potassium, rhodium, ruthenium, scandium, silver, sodium, strontium, thallium, uranium, vanadium, zinc,
The method for correcting a waterless planographic printing plate according to any one of claims 1 to 16, which is a complex containing at least one element selected from the group of zirconium. 18. A method for correcting a defective portion of an ink repellent layer formed on a plate surface of a waterless lithographic printing plate, which comprises a photosensitive layer and an ink repellent layer laminated in this order on a support. After pasting a sheet with a hole with a halftone dot structure on the plate surface including the defect part of the sheet, applying a correction liquid that is an ink repellent solution from this sheet, and curing it,
The method for correcting a waterless planographic printing plate according to any one of claims 1 to 17, wherein the ink repellent portion having a halftone dot structure is formed by removing this sheet. 19. A method for correcting a defective portion of an ink repellent layer formed on a plate surface of a waterless lithographic printing plate, which comprises a photosensitive layer and an ink repellent layer laminated in this order on a support, said ink repellent layer. The ink-receptive sheet with holes in the halftone dot structure is attached on the plate surface including the defect part of the ink, and the correction liquid, which is an ink repellent solution, is applied and cured from above this sheet to form the halftone dot ink. The method for correcting a waterless lithographic printing plate according to claim 1, wherein a repulsive portion is formed. 20. The waterless planographic printing according to claim 18, wherein the halftone dot perforated sheet is produced from a halftone dot perforated sheet. How to fix the edition. 21. A sheet having a halftone dot structure, which is made of light,
21. A sheet prepared by punching a halftone dot structure using at least one means selected from the group consisting of heat, electric, electronic and mechanical means. How to correct the waterless planographic printing plate described in any of 1.