JP3207103B2 - Transfer receiver for inkjet printer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for improving the gloss and light fastness of a printed matter of an ink jet printer.
The present invention relates to a transfer image receiving member for an ink jet printer that enables printing even on a surface where printing is difficult.

[0002]

2. Description of the Related Art A transfer member has been widely used in the past for performing printing including characters and pictures on various surfaces on which printing is difficult. The transfer body generally has a support layer, a release layer, a print layer, and an adhesive layer, and characters and pictures are printed on the print layer by gravure printing or the like.

[0003] There are various printing means.
Recently, an ink jet recording method has attracted attention as a method for easily printing a desired design created by a personal computer or the like at low cost, and has been widely used. Aqueous color inks are usually used for inkjet recording,
A dye is used as a coloring agent for the aqueous ink. Dyes have the advantage that they are soluble in water and other solvents and can form very thin colored layers, and can produce a very large number of colors. (Irradiation). Further, it is difficult to print on the surface of an object having no hygroscopicity (for example, a plastic film or a molded product) due to the water-based ink.

[0004] By overcoming such drawbacks, it is expected that clean printing by an ink jet printer can be easily performed on various surfaces, and that the range of use of the ink jet printer is expected to be widened.

Accordingly, an object of the present invention is to improve the gloss and light fastness of a printed matter of an ink jet printer,
An object of the present invention is to provide a transfer image receiving body for an ink jet printer which enables printing even on a surface where printing is difficult.

[0006]

Means for Solving the Problems In view of the above problems, as a result of intensive studies, the present inventor has provided a heat-sealable image-receiving layer capable of printing with aqueous ink on a support layer via a release layer and an ultraviolet cut layer. By using the transferred transfer member, it is possible to transfer the printed matter by the ink jet printer onto various kinds of transfer receiving members, and to solve the problems of poor gloss and discoloration (deterioration) due to UV irradiation, which are disadvantages of the aqueous ink. Discovered and conceived of the present invention.

That is, the transfer image receiving body for an ink jet printer of the present invention comprises a support layer, a release layer formed on the support layer, and an ultraviolet ray cut-off containing an ultraviolet absorber formed on the release layer. Layer and polyethylene oxalate
And an image receiving layer having a heat sealing property made of an amide-polypropylene oxide copolymer . After printing on the image receiving layer with an aqueous ink using an ink jet printer, heat sealing is performed on a transfer receiving body, and the support layer is peeled off. It is characterized by the following. UV cut layer is 1 ~ 50μm thick
And the image receiving layer preferably has a thickness of 1 to 50 μm.
No.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

[1] Configuration of Transfer Image Receiver for Inkjet Printer The transfer image receiver for an inkjet printer of the present invention has a support layer 1, a release layer 2 laminated on the support layer 1, and a release layer 2 laminated on the release layer 2. It comprises an ultraviolet cut layer 3 and a heat-sealable image receiving layer 4 laminated on the ultraviolet cut layer 3.

(1) Support Layer The support layer 1 needs to have high mechanical strength to support each layer of the transfer body. Therefore, polypropylene,
Polyolefins such as polyethylene, polyesters such as polyethylene terephthalate, polyamides such as nylon are preferred, and polyesters such as polyethylene terephthalate are particularly preferred. The surface of the support layer 1 can be made very flat by a known method so as to give gloss to the surface of the transfer body after peeling. The thickness of the support layer 1 is preferably from 10 to 50 μm, more preferably from 20 to 30 μm.
When the surface of the transfer body after peeling is made matte (matte type), polyolefins such as polypropylene and polyethylene, polyesters such as polyethylene terephthalate, polyamides such as nylon and the like are embossed or the like to give a support. Irregularities can be provided on the surface of the layer 1, or the above resin material can be laminated on paper, film, nonwoven fabric or the like, and the irregularities on the surface of paper or the like can be transferred to the resin material. When the above resin material is laminated on paper or the like to form the support layer 1, the thickness of the support layer 1 is preferably 10 to 150 μm,
130 μm is more preferred.

(2) Peeling Layer The peeling layer 2 is a layer for allowing the ultraviolet ray cut layer 3 and the image receiving layer 4 to be easily peeled off from the support layer 1. It is a substance coated with an active substance. The thinner the release layer 2 is, the better the release property is.

(3) UV cut layer The UV cut layer 3 contains an ultraviolet absorber,
It is made of a resin having good transparency, surface hardness and mechanical strength. As a resin having such characteristics, an acrylic resin is preferable. By using an acrylic resin for the ultraviolet ray cut layer 3, it is possible to give a clear color tone and gloss to a character or a pattern printed on the image receiving layer 4, which will be described later, and to impart good light resistance to the print by the ultraviolet absorber. .

Examples of the ultraviolet absorber include benzophenone compounds (eg, 2-hydroxybenzophenone, 2,4-dihydroxybenzophenone, 2,2 ′, 4-trihydroxybenzophenone), and salcylate compounds (phenylsulfylate, 2,4 -Di-tert-butylphenyl-3,5-di-tert-butyl-4-
Hydroxybenzoate, etc.), benzotriazole compounds ((2'-hydroxyphenyl) benzotriazole, (2'-hydroxy-5'-methylphenyl) benzotriazole, etc.), acrylate compounds (methyl-2-carbomethoxy-3-) Hindered amine compounds (bis (2,2,6,6-tetramethylpiperidinyl) sebacate, etc.), hindered phenol compounds (tetrakis- [methylene-3- (3 ', 5'- Di-t-butyl-4'-hydroxyphenyl) propionate] methane, 2,6-di-t-butyl-4-methylphenol, octadecyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate, 2,2'-methylene-bis (4-methyl-6-t-butylphenol), 4,4'-butylidenebis (6-t-butyl-6
-t-butylphenol) and the like.

[0013] Monomers for forming an acrylic resin include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, and ( Alkyl (meth) acrylates such as n-octyl (meth) acrylate and n-dodecyl (meth) acrylate can be used. In addition, if necessary, (meth) acrylic acid may be used as a copolymer monomer. Hydroxy group-containing acrylic monomers such as hydroxymethyl, hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, N-methylolacrylamine, (meth) acrylic acid, crotonic acid, itacone Carboxyl group-containing ethylenic monoacids such as acid, fumaric acid and maleic acid Chromatography, styrene, alpha-methyl styrene, o- methyl styrene, m- methyl styrene, p-
Styrene monomers such as methylstyrene and pt-butylstyrene, ethylenic monomers copolymerizable with the above monomers, (meth) acrylonitrile, and the like can be used.

The acrylic resin used in the present invention may be either thermoplastic or thermosetting. In the case of thermosetting, the acrylic resin is made self-crosslinkable by introducing an unsaturated bond, or a crosslinking agent is added. I do. In the case of self-crosslinking, a so-called crosslinking monomer having two or more radically polymerizable unsaturated bonds in the molecule is contained. Examples of the crosslinkable monomer having two or more radically polymerizable unsaturated bonds in a molecule include ethylene glycol diacrylate, ethylene glycol dimethacrylate, triethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, and 1,3-butylene glycol. Dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, 1,4-butanediol diacrylate, neopentyl glycol diacrylate, 1,6-hexanediol diacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, penta Erythritol tetraacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol Tetramethacrylate, glycerol dimethacrylate, glycerol diacrylate, glycerol allyloxydimethacrylate, 1,1,1-trishydroxymethylethanediacrylate, 1,1,1-trishydroxymethylethanetriacrylate, 1,1,1-tris Hydroxymethylethane dimethacrylate, 1,1,1-trishydroxymethylethanetrimethacrylate, 1,1,1-trishydroxymethylpropane diacrylate, 1,1,1-trishydroxymethylpropane triacrylate, 1,1,1 -Trishydroxymethylpropane dimethacrylate, 1,1,1-
Trishydroxymethylpropane trimethacrylate,
Examples thereof include polymerizable unsaturated compounds such as diallyl terephthalate, diallyl phthalate, glycidyl acrylate, glycidyl methacrylate, triallyl cyanurate, triallyl isocyanurate and the like. Crosslinkable monomers can be added up to 20% by weight of the acrylic resin.

The content of the ultraviolet absorber in the ultraviolet cut layer 3 is preferably 0.0005 to 1.0% by weight. If the amount of the ultraviolet absorber is less than 0.0005% by weight, the effect of improving light resistance cannot be sufficiently achieved, and if it exceeds 1.0% by weight, the effect cannot be improved accordingly. The more preferable content of the ultraviolet absorber in the ultraviolet cut layer 3 is 0.05 to 0.5% by weight.

The thickness of the ultraviolet cut layer 3 is preferably 1 to 50 μm.
Preferably, 1 to 20 μm is more preferable, and 2 to 4 μm is particularly preferable.
preferable. If the thickness of the UV-cutting layer 3 is less than 1 μm, the UV-cutting effect is insufficient, while if it exceeds 50 μm , the UV-cutting effect is saturated and further improvement cannot be obtained.

(3) Image-Receiving Layer The image-receiving layer 4 needs to have excellent affinity with the aqueous ink and have heat sealing properties. Further, since the printing layer 5 is formed on the lower surface of the image receiving layer 4 (corresponding to the surface of the transfer body) and can be seen from the back of the image receiving layer 4 as shown in FIG.
The image receiving layer 4 is required not to be diffused even when the aqueous ink permeates, and to have transparency enough to transmit the print. As a material of such an image receiving layer 4, polyethylene
Uses a oxide-polypropylene oxide copolymer
You. Film formability, considering the ride like a water-based ink, polyether
The molecular weight of the Tylene oxide-polypropylene oxide copolymer is preferably from 5,000 to 5,000,000, and from 500,000 to
1,000,000 is more preferred.

The thickness of the image receiving layer 4 is preferably 1 to 50 μm .
5 to 20 μm is more preferable, and 10 to 15 μm is particularly preferable.
No. When the thickness of the image receiving layer 4 is less than 1 μm , the heat sealing property is insufficient, and there is a possibility that the image receiving layer 4 may be peeled off from the transfer receiving body 6. On the other hand, when the thickness of the image receiving layer 4 exceeds 50 μm , the transmittance of the printed image is lowered and the outline thereof is blurred, which is not preferable.
Since the image receiving layer 4 has heat sealing properties, an adhesive layer is necessary.
Not.

[2] Method for Producing Transfer Image Receiver for Inkjet Printer The method for producing the transfer image receptor for an ink jet printer of the present invention is not particularly limited. For example, it can be produced by the following method.

First, after the release layer 2 is coated on the ultraviolet absorbent 1, the ultraviolet cut layer 3 and the image receiving layer 4 are sequentially laminated. Lamination of the ultraviolet ray cut layer 3 and the image receiving layer 4 is performed by applying and drying a solution of an organic solvent containing a raw material resin by gravure coating, roll coating, etc., and then heat-curing as necessary, or melt-extruding the raw material. It is preferable that the layers are laminated by an extrusion lamination method or the like.

[3] Transfer Method A transfer method using the transfer image receiving body for an ink jet printer of the present invention is a thermal transfer method. As the transferred object 6,
Paper, polyvinyl chloride resin; polyolefin resin such as polyethylene, polypropylene, ethylene-α-olefin copolymer, ethylene-vinyl acetate copolymer, ethylene-vinyl chloride copolymer; polymethyl methacrylate, methacryl-styrene copolymer Acrylic resins such as polyethylene terephthalate and polybutylene terephthalate; polyester resins such as acrylonitrile resin; polystyrene resin; ABS resin; polyamide resin; polycarbonate resin; phenolic resin; and polyphenylene oxide resin. In particular, it is suitable for transferring to polyvinyl chloride resin, acrylic resin, or the like, which is difficult to print with aqueous ink. The state after the transfer is as shown in FIG.

[0022]

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 A 12 μm-thick polyethylene terephthalate film was used as a support layer, and a release agent (trade name “L-7”) was applied to one surface of the polyethylene terephthalate film.
0 "(manufactured by Daicel Chemical Co., Ltd.) to form a release layer having a thickness of 1 μm. Then, an acrylate resin (trade name" S-1030 ", manufactured by Toa Gosei Chemical Industry Co., Ltd.) was applied.
A blend of 0.2% by weight of a benzotriazole-based UV absorber (trade name “Tinuvin P”, manufactured by CIBA-GEIGY) is laminated on the release layer by a roll coating method,
An ultraviolet cut layer having a thickness of 3 μm was formed. On top of this, “PAOGEN” (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) was laminated by a roll coating method to form an image receiving layer having a thickness of 10 μm.

An ink-jet printer (MJ) manufactured by Epson Corp.
-500C), and transferred to the surface of a 200 μm-thick polyvinyl chloride resin film using a hot roll (surface temperature: 75 ° C.), and the support layer was peeled off.

The printed matter transferred onto the transfer object showed a vivid color tone and gloss. In addition, the due cycle sunshine super long life weather meter “WEL-SUN-
DC "(manufactured by Suga Test Instruments Co., Ltd.).
The conditions for the light fastness test were 240 hours without rainfall. As a result, the retention of the reflection density was 80% or more, and it was found that the film had good light resistance.

Example 2 On a support layer having the same release layer as in Example 1, 0.2% by weight of an acrylate resin (trade name "S-4090", manufactured by Toa Gosei Chemical Industry Co., Ltd.) was added. A blend of a benzophenone-based UV absorber (trade name “UVINUL D-49”, manufactured by BASF) was laminated on the release layer by a roll coating method to form a 3 μm-thick UV cut layer. "Aqua Coke" (manufactured by Sumitomo Seika Co., Ltd.) is laminated thereon by the extrusion lamination method to a thickness of 10
A μm image receiving layer was formed.

The image receiving layer of the transfer image receiving body thus obtained was printed by an ink jet printer in the same manner as in Example 1, and then thermally transferred to the surface of a polyvinyl chloride resin film having a thickness of 200 μm to form a support layer. Peeled off.

The printed matter transferred onto the transfer object showed a vivid color tone and gloss. A light resistance test was conducted under the same conditions as in Example 1. As a result, it was found that the retention of the reflection density was 80% or more, and the light resistance was good.

Example 3 A 120 μm-thick polypropylene extruded mat-laminated paper (support layer having irregularities) was used as a support layer, and the same release layer as in Example 1 was formed. Name "S-4090", Toa Gosei Chemical Industry Co., Ltd.
Blended with 0.2% by weight of a benzophenone-based UV absorber (trade name “UVINUL D-49”, manufactured by BASF) in a roll coating method on the release layer.
An ultraviolet cut layer having a thickness of 3 μm was formed. "Aqua Coke" (manufactured by Sumitomo Seika Co., Ltd.) was laminated thereon by an extrusion lamination method to form an image receiving layer having a thickness of 10 μm.

The image receiving layer of the transfer image receiving body thus obtained was printed by an ink jet printer in the same manner as in Example 1, and then thermally transferred onto the surface of a 200 μm-thick polyvinyl chloride resin film to form a support layer. Peeled off.

The printed material transferred onto the transfer material showed a vivid color tone and gloss. A light resistance test was conducted under the same conditions as in Example 1. As a result, it was found that the retention of the reflection density was 80% or more, and the light resistance was good.

Comparative Example 1 On the support layer on which the same release layer as in Example 1 was formed, the acrylate resin (trade name “S-
Using 1030 ″), a layer having a thickness of 3 μm (containing no ultraviolet absorber) was laminated by a dry lamination method, and the same image receiving layer as in Example 1 was formed thereon. After printing on the image receiving layer by an ink jet printer in the same manner as in Example 1, it was thermally transferred to the surface of the polyvinyl chloride resin film, and the support layer was peeled off.

Although the printed matter transferred onto the transfer medium showed a vivid color tone and gloss, in the same light resistance test as in Example 1, the retention of the reflection density was 50% or less, and the light resistance was poor. Do you get it.

Comparative Example 2 A transfer member was prepared in the same manner as in Example 1 except that a linear low-density polyethylene having a thickness of 15 μm was used as the image receiving layer. When printing was performed on this transfer body using an inkjet printer in the same manner as in Example 1, the aqueous ink was repelled, and a clean print layer was not formed on the image receiving layer.

[0035]

As described in detail above, the transfer image receiving body for an ink jet printer of the present invention not only can transfer the print of the ink jet printer to various surfaces which are difficult to print by the ink jet printer, but also can receive the image. Since an ultraviolet cut layer made of a resin containing an ultraviolet absorber is provided between the layer and the support layer, the fading of the printed matter can be greatly reduced, and a clear color tone and gloss can be provided.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a transfer image receiving body for an ink jet printer which is an example of the present invention.

FIG. 2 is a partial cross-sectional view of a transfer image receiving body after transferring to a transfer receiving body and peeling a support layer.

[Brief description of reference numerals]

 DESCRIPTION OF SYMBOLS 1 ... Support layer 2 ... Release layer 3 ... UV cut layer 4 ... Image receiving layer 5 ... Ink 6 ... Transfer receiving body

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B41M 5/00 B44C 1/165-1/17 B32B 7/06 B41J 2/01 B41M 3/12

Claims (2)

(57) [Claims] 1. A support layer, a release layer formed on the support layer, an ultraviolet cut layer containing an ultraviolet absorber formed on the release layer, and polyethylene oxide.
Having an image-receiving layer having a heat-sealing property made of a polypropylene oxide copolymer, heat-sealing the image-receiving layer to an image-receiving body after printing with an aqueous ink by an inkjet printer, and peeling off the support layer. A transfer image receiving body for an ink jet printer. 2. The transfer image receiving body for an ink jet printer according to claim 1, wherein the ultraviolet ray cut layer has a thickness of 1 to 4.
A transfer image receiving body for an ink jet printer, wherein the image receiving layer has a thickness of 50 μm, and the image receiving layer has a thickness of 1 to 50 μm.