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Transparent thermal recording medium

一种热敏记录材料、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，达到磨损少的效果

Active Publication Date: 2008-08-20
OJI PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reality is that thermosensitive recording materials that fully satisfy the required characteristics have not yet been obtained

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] ・Preparation of liquid A (composite particle dispersion)

[0122] As a leuco dye, 5 parts of 3-di(n-butyl)amino-6-methyl-7-anilinofluorane, 3-diethylamino-6-methyl-7-(3-methylphenylamino)- 5 parts of fluorane, 6 parts of 3-diethylamino-6,8-dimethylfluoran and 3,3-bis(4-diethylamino-2-ethoxyphenyl)-4-azaphthalide 2 parts, and 2-hydroxy-4-octyloxybenzophenone were heated and dissolved (150° C.) in 5 Parts, m-tetramethylxylyl diisocyanate (manufactured by Mitsui Takeda Chemical Co., Ltd., Takenet (registered trademark) TMXDI) in a mixed solvent of 15 parts, the resulting solution was slowly added to a mixture containing polyvinyl alcohol (manufactured by Kuraray Co., Ltd., In 100 parts of an aqueous solution of 8.5 parts of ポババル (registered trademark) PVA-217EE) and 0.5 parts of an ethylene oxide adduct of acetylene diol (manufactured by Nisshin Chemical Co., Ltd., Orfin E1010) as a surfactant, Emulsification and dispersion were carried out by stirring with a rotation ...

Embodiment 2

[0136] In the preparation of the coating solution for the protective layer in Example 1, except that 1.5 parts of calcined kaolin (Ansilex 93, manufactured by Engelhard Co., Ltd.) was reduced to 0.5 parts, the same operation as in Example 1 was carried out to obtain a transparent thermosensitive recording material. .

Embodiment 3

[0138]In the preparation of the coating solution for the protective layer in Example 1, except that 1.5 parts of calcined kaolin (Ansilex 93, manufactured by Engelhard Co., Ltd.) was increased to 3.0 parts, a transparent thermosensitive recording material was obtained in the same manner as in Example 1. .

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PUM

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Abstract

A transparent thermal recording medium having (a) transparent support, (b) thermal recording layer containing a leuco dye and a coloring agent, superimposed on the transparent support and (c) protective layer containing as main components a pigment and an adhesive, superimposed on the thermal recording layer, characterized in that the pigment contained in the protective layer consists of (i) not only at least one main pigment selected from the group consisting of kaolin and aluminum hydroxide but also calcined kaolin, or (ii) at least one main pigment selected from the group consisting of kaolin and aluminum hydroxide, calcined kaolin and a third pigment, and that calcined kaolin is present in a proportion of 0.3 to 5 mass% based on the protective layer.

Description

technical field [0001] The present invention relates to a transparent heat-sensitive recording material utilizing the color reaction of a leuco dye and a color developer, in particular to a transparent heat-sensitive recording material for high-energy recording. Background technique [0002] Thermosensitive recording materials that use the color reaction of a leuco dye and a color developer are relatively cheap, and the recording equipment is compact and easy to maintain. Therefore, it is not only used as a recording medium for facsimile machines, word processors, and various computers, but also as a recording medium. It is used as a recording medium for medical equipment such as ultrasonic diagnosis, X-ray image diagnosis, and NMR (MRI) tomographic image diagnosis. [0003] When using the heat-sensitive recording material as a recording medium for medical diagnosis, since the extremely subtle density difference in the image is captured as information for diagnosis, it is po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/337
CPCB41M5/426B41M5/3372B41M5/41B41M5/44B41M2205/04B41M2205/40B41M5/337
Inventor 岩崎信幸武藤贤志野岛将晴
Owner OJI PAPER CO LTD