JPS62128791A - Heat-sensitive ink-transfer sheet and its using method - Google Patents

Abstract

PURPOSE:To make the trusty recording of fine pattern possible, by providing the area of a heating fusion type transparent filling layer in a coloring ink area. CONSTITUTION:The transparent filling layer area 3 of a heat-sensitive ink- transfer sheet 1 is piled on an image-receiving paper 4 (in this case, that having rough surface) and then, pressed and heated from the base material sheet 6 side with a thermal head 5. Thereby, the surface of image-receiving paper 4 is flatened. Then, the heat-sensitive ink-transfer sheet 1 is so travelled that, for instance, its yellow ink layer area 2Y positions on the receiving paper 4 and then, the specific part of the yellow ink layer is transferred onto the transparent filling layer 3 to be transferred in place. If the red ink layer area 2M and the indigo blue ink area 2C are successively transferred in the same way according to necessity, a required color picture image can be formed on the image-receiving paper 4.

Description

Detailed Description of the Invention (Industrial Field of Application) This invention relates to a line-type or serial-type transfer method in which a specific colored ink layer is continuously formed on one main surface of a strip-shaped base sheet by dividing it into areas. The present invention relates to a sheet and a thermal transfer recording method using the same.

(Technical Background of the Invention) In recent years, thermal transfer recording methods using thermal heads have been developed because they are noiseless, can print in color, and are relatively inexpensive devices.
It is becoming more and more popular due to its compact design. However, this thermal transfer recording system has the drawback that only paper having a smooth surface with a Bekk smoothness of 100 seconds or more can be used as the transfer paper, that is, the image receiving paper.

Therefore, it has been desired to develop a thermal transfer recording method that can clearly record fine patterns even on image receiving paper with a rough surface.

(Object of the Invention) The present invention has been made in view of the above circumstances, and provides a thermal transfer recording method capable of faithfully recording fine patterns even on image receiving paper with a rough surface, and a thermal transfer sheet suitable for this method. The purpose is to provide

(Summary of the Invention) That is, the present invention provides a transfer sheet in which one or more specific colored ink layers are continuously formed on one principal surface of a strip-shaped base sheet, divided into regions, and in which a layer of colored ink is formed between the colored ink regions. The present invention provides a heat-sensitive transfer sheet characterized in that a region of a heat-melting transparent sealing layer is provided.

Furthermore, the present invention provides a transfer sheet in which a specific colored ink layer is continuously formed on one surface of a strip-shaped base sheet, divided into sections, and in which a heat-melting transparent filler is applied to fffl of the colored ink section. A heat-sensitive transfer sheet provided with a layer area is placed on an image-receiving paper, and then the heat-melting type transparent sealing layer is previously transferred onto the entire surface or a part of the image-receiving paper using a thermal head, and then on the transferred sealing layer. The present invention provides a thermal transfer recording method characterized in that the colored ink layer is transferred by a thermal head to form a desired colored pattern.

(Detailed Description of the Invention) The present invention will be described below in connection with a line type thermal transfer sheet with reference to illustrated embodiments. Note that the term "thermal transfer sheet" as used herein is a concept that includes not only a line type sheet but also a so-called serial type sheet.

FIG. 1 shows a line-type thermal transfer sheet according to an embodiment of the present invention, in which heat-melting colored ink layers 2 are formed at regular intervals on one main surface of a strip-shaped substrate sheet (Z). has been done.

Areas 3 of a heat-melting transparent sealing layer are formed between the colored ink layers 2. In this embodiment, the colored ink layer 2 includes a yellow ink layer area 2Y and a red ink layer area 2Y.
It consists of three areas: M and blue ink area 2C.

The colored ink layer 2 is not limited to this, and may be an ink layer area of only one color, or may be composed of ink layer areas of four or more colors, and may be configured arbitrarily. As the material constituting the region 3 of the heat-melting transparent sealing layer, binder resins conventionally used in heat-melting colored ink layers, such as cellulose resin, polyvinyl alcohol, or wax, can be used.

When a thermal head transfers and records a predetermined pattern using the heat-sensitive transfer sheet 1 provided with the heat-melting transparent sealing layer area 3, as shown in FIG. The transparent sealing layer area 3 of the thermal transfer sheet 1 is placed on top of the coarse material), and then the thermal head 5
Pressure and heat are applied from the base sheet 6 side.

As a result, the transparent sealing layer 3 is transferred to the necessary portions of the image-receiving paper 4, and the surface of the image-receiving paper 40 is flattened.

Next, as shown in FIG. 3, the thermal transfer sheet 1 is moved so that a specific area of the colored ink layer 2, for example, the yellow ink layer area 2Y, is positioned on the image receiving paper 4, and then transferred to the thermal head 5. A predetermined portion of the yellow ink layer is transferred onto the transferred transparent sealing layer 3 by applying pressure and heating from the base sheet 6 side. A desired color image can be formed on the image receiving paper 4 by sequentially transferring the red ink layer area 2M and the blue ink layer area 2C as required in the same manner.

(Example) Heat-melting transparent sealing layer consisting of the following composition (composition I), (composition I) Can7'2 wax 80 parts by weight, ethylene/
Vinyl acetate 20 parts by weight Copolymer nitrocellulose 5 parts by weight and heat-melting colored ink layer consisting of the following composition (composition ■), (composition ■) Paraffin wax 80 parts by weight Ethylene/hinyl acetate 2ON parts copolymer nitrocellulose 5 parts by weight carbon A thermal transfer sheet (hereinafter referred to as transfer sheet A) was prepared by printing 25 parts by weight of black onto a polyethylene film with a thickness of 5.7 μm in alternating patterns using a hot melt coater.
was created. Furthermore, as a comparative example, color ink layer (composition n)
A heat-sensitive transfer sheet (hereinafter referred to as transfer sheet B) was produced by continuous printing using only the transfer sheet.

Using these transfer sheets) A and B, a checkered pattern 7 with a side of 1/6 mm as shown in Fig. 4 is printed at 0.5 mJ/
The dot energy was used to transfer onto rough paper with a Beck smoothness of 5 seconds. When transferring using transfer sheet) A, composition I
After smoothing the surface of the rough paper by transferring with a transparent sealing layer consisting of the following, a pattern was printed using an ink layer consisting of the composition (3). The halftone dot percentage of the resulting pattern was measured and was found to be 45% for transfer sheet A.
For transfer sheet B, a value of 28% was obtained.

(Effects of the Invention) As described in detail above, according to the present invention, a heat-melting transparent sealing layer area is provided as a heat-sensitive transfer sheet, and this transparent sealing layer is first transferred onto an image receiving paper, and then Since various colored ink layers are formed, fine patterns can be faithfully transferred and recorded even on image receiving paper with a rough surface.

[Brief explanation of drawings]

FIG. 1 is a plan view of a heat-sensitive transfer sheet according to the present invention, and FIG.
Figures 3 and 3 are schematic diagrams for explaining the transfer method of the present invention, and Figure 4 is a diagram showing a pattern. In the figure, l...thermal transfer sheet, 2... colored ink layer, 3... heat-melting transparent sealing layer area, 4... image receiving paper, 5... thermal head, 6... base material sea). Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 2 'i24 Procedural amendments Showa 4n 4-61., 11.2L Commissioner of the Japan Patent Office Michibe Uga 1, Case indication patent application 1986- 268589 No. 2, Name of the invention Thermal transfer sheet and its method of use 3, Relationship with the amended Nagisa issue Patent applicant (319) Toppan Printing Co., Ltd. 4 Agent address 1-26-5 Toranomon, Minato-ku, Tokyo No. 17 Mori Pill 〒105 Telephone (13 (502'): i 1.
81 (Taisei-1ξ) 6 Ura IU': Contents of the 7th amendment (+1 Add "Patent application pursuant to the proviso to Article 38 of the Patent Act" to the title of the application. (2) Title of the invention in the application Next to the column, a new column "Number of inventions stated in claims" will be created, and the number of inventions "2" will be added.')

Claims (4)

[Claims] (1) In a transfer sheet in which a specific colored ink layer is continuously formed on one principal surface of a strip-shaped base sheet in sections, a heat-melting transparent filler layer is provided between the colored ink sections. A heat-sensitive transfer sheet characterized by being provided with. (2) The heat-sensitive transfer sheet according to claim 1, wherein the colored ink layer consists of three or more continuous color ink areas, and a heat-melting transparent sealing layer area is formed in front of the colored ink layer. (3) The thermal transfer sheet according to claim 1, wherein the colored ink layer consists of areas of one color, and heat-melting transparent sealing layers are formed alternately with the colored ink layer. (4) A transfer sheet in which a specific colored ink layer is continuously formed on one surface of a strip-shaped base sheet, divided into areas, and a heat-melting transparent filler layer is provided between the colored ink areas. A heat-sensitive transfer sheet with areas provided thereon is placed on the image-receiving paper, and then the heat-melting transparent sealing layer is transferred onto the entire surface or part of the image-receiving paper using a thermal head, and then the thermal head is applied onto the transferred sealing layer. A thermal transfer type recording method characterized in that a desired colored pattern is formed by transferring the above-mentioned colored ink layer.