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Heat-sensitive recording material with salicylic acid derivative as (color) developer reactive with a dye precursor

A technology for recording materials and dye precursors, applied in the direction of reproduction/marking methods, printing, etc., which can solve problems such as industrial neglect

Inactive Publication Date: 2017-04-19
MITSUBISHI HITEC PAPER EURO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In recent years, however, there have been increased concerns about the environmental and health compatibility of certain (color) developers, which, while on the one hand not being based at all on natural scientific grounds, on the other hand cannot be investigated by industry. and especially neglected by business

Method used

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  • Heat-sensitive recording material with salicylic acid derivative as (color) developer reactive with a dye precursor
  • Heat-sensitive recording material with salicylic acid derivative as (color) developer reactive with a dye precursor
  • Heat-sensitive recording material with salicylic acid derivative as (color) developer reactive with a dye precursor

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Embodiment Construction

[0065] The present invention is further illustrated according to the following examples according to the present invention and comparative examples:

[0066] In order to form the paper web as a web-like substrate for the heat-sensitive recording material according to the invention and for a comparative heat-sensitive recording material, pulp consisting of eucalyptus cellulose and other cellulose fibers was mixed with filler in a mixing tank (Mischbütte). The material is mixed with water. Further components of the pulp added here are rosin size for block gluing in an amount of 0.6% by weight (absolute dry) based on the total weight of the pulp, and other usual fillers, e.g. as pigments and / or optical brighteners of kaolin. After the pulp is made, the pulp is then conveyed to a fourdrinier paper machine where it is processed to have a 35 g / m 2 The mass of the paper web in terms of area.

[0067] After gentle calendering, the web is fed to a doctor roll coater integrated into ...

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Abstract

A heat-sensitive recording material is proposed, comprising a web substrate having a facing side and a reverse side opposite it, at least one heat-sensitive recording layer on at least one of the two sides of the web substrate, the heat-sensitive recording layer comprising at least one dye precursor and at least one salicylic acid derivative as (color) developer reactive with this at least one dye precursor, characterized in that: the at least one salicylic acid derivative is 3,5-di(alpha-methylbenzyl)salicylic acid, the heat-sensitive recording layer further comprises polyvinylpyrrolidone as an auxiliary component assisting the (color) developer.

Description

technical field [0001] The present invention firstly relates to a heat-sensitive recording material having a web-shaped substrate and at least one heat-sensitive recording layer formed on at least one of both sides of the web-shaped substrate, wherein the The thermosensitive recording layer contains at least one dye precursor and at least one salicylic acid derivative as a (color) developer capable of reacting with the at least one dye precursor. In the context of the present invention, in all proposed embodiments, being reactive with dye precursors means that said at least one salicylic acid derivative and said at least one dye The precursors react to form a visually recognizable printed image. Background technique [0002] Recording materials that are heat-sensitive and that react with externally delivered heat to form a color have been known for many years and are substantially gaining in popularity, which can also be attributed to: their use for merchants who distribute...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/333B41M5/337
CPCB41M5/3335B41M5/3372B41M5/3275B41M5/3377
Inventor 戴安娜·瓦伦蒂娜·贝塞拉西亚巴托诺拉·维尔克
Owner MITSUBISHI HITEC PAPER EURO
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