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Thermal transfer sheet

A thermal transfer sheet and transfer layer technology, which is applied in printing, printing devices, and post-processing of printing, can solve the problems of inhibiting thermal bonding durability that have not yet been realized, and achieve the goal of inhibiting thermal bonding and improving durability Effect

Active Publication Date: 2018-06-08
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, these problems tend to occur more easily in thermal-peeling printers than in cold-peeling printers.
[0004] In addition, although the transfer layer transferred to the transfer target is required to have good durability, it has not been achieved to suppress the transfer target that may be generated when high energy is applied to transfer the transfer layer to the transfer target. Thermal adhesion to the transfer layer, while sufficiently satisfying the durability of the printed matter obtained by transferring the transfer layer to the object to be transferred, there is room for improvement in this regard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Using a polyethylene terephthalate film (Toray Co., Ltd.) with a thickness of 4.5 μm as a substrate, coating liquid 1 for a base layer of the following composition was applied to one surface of the substrate, and dried. The thickness is 1 μm, and it is dried to form a base layer. Next, the coating liquid 1 for a protective layer of the following composition was apply|coated on the base layer so that the thickness after drying might be 1 micrometer, and it dried and formed the protective layer. In addition, a coating liquid for a back layer having the following composition was applied to the other surface of the substrate and dried to form a back layer with a thickness of 1 μm after drying, thereby obtaining a substrate with A transfer layer formed by laminating a base layer and a protective layer, and the thermal transfer sheet of Example 1 in which a back layer is provided on the other surface of the base material. In addition, the coating liquid for the base layer 1, ...

Embodiment 2

[0105] The coating liquid 1 for the base layer was changed to the coating liquid 2 for the base layer of the following composition to form the base layer, except that everything was carried out in the same manner as in Example 1. The base layer was provided on one surface of the substrate. The transfer layer formed by laminating the base layer and the protective layer, and the thermal transfer sheet of Example 2 in which the back layer is provided on the other surface of the base material.

[0106]

[0107] ·25 parts of copolymer of isobutyl methacrylate and acrylic acid

[0108] (Acid value: 93mgKOH / g, Mw: 12500, Tg: 81°C)

[0109] ·67 parts of methyl ethyl ketone

[0110] · 8 parts of n-propyl acetate

Embodiment 3

[0112] The coating liquid 1 for the base layer was changed to the coating liquid 3 for the base layer of the following composition to form the base layer, except that everything was carried out in the same manner as in Example 1 to obtain a base on one surface of the substrate. The transfer layer formed by laminating the base layer and the protective layer, and the thermal transfer sheet of Example 3 in which the back layer is provided on the other surface of the base material.

[0113]

[0114] ·25 parts of copolymer of isobutyl methacrylate and acrylic acid

[0115] (Acid value: 49mgKOH / g, Mw: 11400, Tg: 74°C)

[0116] ·67 parts of methyl ethyl ketone

[0117] · 8 parts of n-propyl acetate

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Abstract

Provided is a thermal transfer sheet that can suppress thermal fusion of the thermal transfer sheet and a transfer-receiving body and can improve the durability of a print obtained by transferring a transfer layer onto the transfer-receiving body, even if energy applied to the thermal transfer sheet was increased when transferring the transfer layer onto the transfer-receiving body. This thermal transfer sheet 100 is equipped with a thermal transfer layer 10 on one surface of a substrate 1. The transfer layer 10 is constituted by one or two or more layers, and among the layers constituting thetransfer layer 10, the layer closest to the substrate 1 contains a copolymer of isobutyl (meth)acrylate and a monomer having a carboxyl group, and the acid value of said copolymer is 40 mgKOH / g or more.

Description

Technical field [0001] The invention relates to a thermal transfer sheet. Background technique [0002] Regarding the thermal transfer sheet used to transfer the transfer layer to the transfer body, various forms are known. For example, there are known (i) one of the substrates as proposed in Patent Documents 1 to 3 A thermal transfer sheet provided with a hot melt ink layer as a transfer layer; (ii) A thermal transfer sheet provided with a receiving layer as a transfer layer on one side of the substrate (also sometimes called an intermediate transfer Printing medium); (iii) a thermal transfer sheet (also sometimes called a protective layer transfer sheet) provided with a protective layer (also sometimes called a release layer) as a transfer layer on one surface of the substrate; (iv) ) A thermal transfer sheet obtained by appropriately combining these constitutions, for example, a transfer layer formed by stacking a release layer and a receiving layer in this order on one surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/382B32B7/06B32B27/30C08J7/043
CPCB32B27/30C08J7/042C08J2367/02C08J2433/10B41M5/38214B41M5/42B41M5/44B41M2205/04B41M2205/38B32B7/06C08J7/043B41M5/36B41M5/363B41M5/5254B41M7/0027
Inventor 太田光洋
Owner DAI NIPPON PRINTING CO LTD
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