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Multicolor thermal recording medium

一种热敏记录介质、热敏记录的技术，应用在温度记录法、复制/标记方法、印刷等方向，能够解决不足以得到低温显色图像、胶囊破坏等问题

Inactive Publication Date: 2005-07-13
NIPPON PAPER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this method can solve the problem of capsule destruction, it is not enough to obtain clear low-temperature chromogenic images and clear high-temperature chromogenic images

Method used

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  • Multicolor thermal recording medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0366] ① Solution (dispersion of red dye precursor)

[0367] 3,3′-bis(1-n-butyl-2-methylindol-3-yl)-2-benzo[c]furanone 30.0 parts

[0368] 10% polyvinyl alcohol aqueous solution 50.0 parts

[0369] 20.0 parts of water

[0370] The mixture of the above components was ground with a sand mill to an average particle size of 1 μm.

[0371] ②Solution (dispersion of color developer)

[0372] 4-Hydroxy-4′-isopropoxydiphenylsulfone 30.0 copies

[0373] 10% polyvinyl alcohol aqueous solution 50.0 parts

[0374] 20.0 parts of water

[0375] The mixture of the above components was ground with a sand mill to an average particle size of 1 μm.

[0376] ③Solution (dispersion of photosensitizer)

[0377] 1,2-bis(phenoxymethyl)benzene 30.0 copies

[0378] 10% polyvinyl alcohol aqueous solution 50.0 parts

[0379] 20.0 parts of water

[0380] The mixture of the above components was ground with a sand mill to an average particle size of 1 μm.

[0381] ...

Embodiment 2

[0389] A thermosensitive recording medium was prepared using the same method as in Example 1 except that the black composite fine particle B dispersion was used instead of the black composite fine particle A dispersion.

Embodiment 3

[0391] A thermosensitive recording medium was prepared using the same method as in Example 1 except that the black composite fine particle C dispersion was used instead of the black composite fine particle A dispersion.

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PUM

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Abstract

A multicolor thermosensitive recording medium characterized in that at least one dye precursor and a polymer of a polyisocyanate component form composite particles, and the polyisocyanate component includes 4,4'-diisocyanate-3,3'-dimethyl -1,1'-biphenyl and / or polymethylene·polyphenyl·polyisocyanate.

Description

field of invention [0001] The present invention relates to a multicolor thermosensitive recording medium using composite fine particles composed of a dye precursor and a polymer. Background of the invention [0002] The thermosensitive recording method refers to setting a thermosensitive chromogenic layer, which is mainly composed of a colorless or light-colored electron-donating dye precursor and an electron-accepting chromogenic agent on a substrate, and by using A thermal head, a thermal pen or a laser beam heats the dye precursor and the color developer to react instantaneously to obtain a method for recording an image. This method is disclosed in Japanese Patent Publication No. 43-4160 or 45-14039 In public. This thermal recording method does not require developing and fixing processes, and can obtain an image of an appropriate shape with simple equipment. Also, these devices have the advantages of being relatively cheap, compact, maintenance-free, and noiseless. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/28B41M5/30B41M5/337B41M5/34
CPCB41M5/3372B41M5/3375B41M5/34
Inventor 永井龙夫滨田薰福地忠一佐佐木隆
Owner NIPPON PAPER IND CO LTD
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