Heat-sensitive transfer recording medium

Patent metadata

Field	Value
Publication number	US-9878566-B2
Application number	US-201514605535-A
Country	US
Kind code	B2
Filing date	Jan 26, 2015
Priority date	Sep 11, 2012
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

There is provided a heat-sensitive transfer recording medium which is able to better suppress the occurrence of abnormal transfer during high-speed printing using a high-speed printer of sublimation transfer type and is able to improve transfer sensitivity in high-speed printing. The heat-sensitive transfer recording medium includes a base ( 10 ), a heat-resistant lubricating layer ( 20 ) formed on one surface of the base ( 10 ), an underlying layer ( 30 ) formed on the other surface of the base ( 10 ), and a dye layer ( 40 ) formed on a surface of the underlying layer ( 30 ), which is on the other side of a surface facing the base ( 10 ). In the heat-sensitive transfer recording medium, the underlying layer ( 30 ) has a major component that is a copolymer of polyester having a sulfonic group on a side chain and acrylic having at least one of a glycidyl group and a carboxyl group.

First claim

What is claimed is:

1. A heat-sensitive transfer recording medium comprising:
a base;
a heat-resistant lubricating layer formed on one surface of the base;
an underlying layer formed on the other surface of the base; and
a dye layer formed on a surface of the underlying layer, the surface being on the other side of a surface facing the base,
wherein the underlying layer has a major component that is a copolymer of polyester having a sulfonic group on a side chain and acrylic having at least one of a glycidyl group and a carboxyl group,
wherein a copolymerization ratio of the polyester and the acrylic is in a range of not less than about 30:70 to not more than about 40:60 in terms of weight ratio, and
wherein a dry coating amount of the underlying layer is 0.20 g/m 2 .

2. The heat-sensitive transfer recording medium of claim 1 , wherein
a copolymerization ratio of the polyester and the acrylic is 30:70 in terms of weight ratio.

3. The heat-sensitive transfer recording medium of claim 1 , wherein
a maximum reflection density of the heat-sensitive transfer recording medium is 2.40 to 2.46.

4. The heat-sensitive transfer recording medium of claim 3 , wherein
the maximum reflection density of the heat-sensitive transfer recording medium is 2.43 to 2.45.

5. The heat-sensitive transfer recording medium of claim 1 , wherein the dye layer comprises at least a dye and a resin, and a ratio of dye to resin in the dye layer is from not less than about 10/100 to not more than about 300/100 in terms of mass.

Assignees

• Toppan Printing Co Ltd

Inventors

• Fukunaga Godai
• Ono Yasunori
• Yamato Takehito
• Miyauchi Yasuhiro
• Hirai Yoko

Classifications

• B41M5/42 Primary

  Intermediate, {backcoat}, or covering layers {(B41M5/405 takes precedence; multilayer thermal transfer systems in general B41M5/38214)} · CPC title

• B41M7/0027

  using protective coatings or layers by lamination or by fusion of the coatings or layers · CPC title

• B41M5/426 Primary

  characterised by inorganic compounds, e.g. metals, metal salts, metal complexes · CPC title

• B41M5/44

  characterised by the macromolecular compounds · CPC title

• B41M5/395

  Macromolecular additives, e.g. binders · CPC title