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Thermal paper with invisible fluorescent developing function

A heat-sensitive paper and fluorescent technology, applied in papermaking, paper, special paper, etc., can solve problems such as fading, identification, and obvious heat-sensitive images, and achieve the effect of ensuring the safety of use

Active Publication Date: 2019-03-19
JIANGSU WANBAO RUIDA HI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the conditions are relatively bad, such as encountering solvents for a long time or encountering high-concentration solvents, the thermal image will fade obviously or completely, and the user can no longer identify the information

Method used

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  • Thermal paper with invisible fluorescent developing function

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A heat-sensitive paper manufacturing process with invisible fluorescent developing function, comprising the following steps:

[0016] (1) The quantitative value of non-fluorescent base paper is 60g / m 2 , the front smoothness is 80s;

[0017] (2) Prepare heat-insulating coating coating solution: add water to the batching tank, turn on the stirring device, add dispersant and calcined kaolin, stir for 40 minutes under high-speed stirring conditions, then add hollow balls, water-retaining agent, defoaming agent, butyl For benzene latex, continue to stir for 20 minutes under low-speed stirring conditions to form a thermal insulation coating coating solution for use;

[0018] The pre-coat layer is composed of the following components in parts by weight as shown: dispersant: 0.5 parts, calcined kaolin: 45 parts, hollow balls: 40 parts, water-retaining agent: 4 parts, defoamer: 0.5 parts, styrene-butadiene Latex: 10 parts.

[0019] (3) Prepare the abrasive liquid with fluore...

Embodiment 2

[0027] A heat-sensitive paper manufacturing process with invisible fluorescent developing function, comprising the following steps:

[0028] (1) The quantitative value of non-fluorescent base paper is 80g / m 2 , the front smoothness is 60s;

[0029] (2) Prepare heat-insulating coating coating solution: add water to the batching tank, turn on the stirring device, add dispersant and calcined kaolin, stir for 40 minutes under high-speed stirring conditions, then add hollow balls, water-retaining agent, defoaming agent, butyl For benzene latex, continue to stir for 20 minutes under low-speed stirring conditions to form a thermal insulation coating coating solution for use;

[0030] The pre-coat layer is composed of the following components in parts by weight as shown: dispersant: 0.5 parts, calcined kaolin: 50 parts, hollow balls: 35 parts, water-retaining agent: 4 parts, defoamer: 0.5 parts, styrene-butadiene Latex: 10 parts.

[0031] (3) Prepare the abrasive liquid with fluore...

Embodiment 3

[0037] A heat-sensitive paper manufacturing process with invisible fluorescent developing function, comprising the following steps:

[0038] (1) The quantitative value of non-fluorescent base paper is 130g / m 2 , the front smoothness is 40s;

[0039] (2) Prepare the abrasive liquid with fluorescent dye: add water to the dispersion tank, turn on the stirring device, add polyvinyl alcohol glue modified with carbonyl group, fluorescent dye, and foam inhibitor, and stir for 30 minutes at 200rpm / min . Take it out and transfer it to a horizontal sand mill for sand grinding, control the average particle size of the material discharged from the sand mill to 0.5-0.6um, and finally stir evenly to form a grinding liquid for use.

[0040]The polishing liquid with fluorescent dye is composed of the following components in the indicated parts by weight: polyvinyl alcohol modified with carbonyl group: 15 parts, fluorescent dye: 84.5 parts, foam inhibitor: 0.5 part.

[0041] (4) Configure t...

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Abstract

The invention relates to a piece of thermal sensitive paper for thermal printing equipment consumables and other fields, and concretely relates to a piece of thermal sensitive paper with invisible fluorography function. The thermal sensitive paper comprises the following components: a piece of base paper, a heat insulating coating, a chromophoric coating, and a protective coating, or a piece of base paper, a heat insulating coating, and a chromophoric coating, or a piece of base paper and a chromophoric coating; the paper is characterized in that the chromophoric coating or the protective coating contains a colored dye with fluorescence which is grinded into microparticles by modified polyvinyl alcohol which is used as a dispersion emulsifier, and a cross-linking agent which can be crosslinked with the modified polyvinyl alcohol to form a film. An invisible fluorescent pattern which is identical to printing content is formed while thermal printing is carried out, in order to prevent loss of printing information.

Description

technical field [0001] The invention relates to a heat-sensitive paper used in the fields of heat-sensitive printing equipment consumables and the like, in particular to a heat-sensitive paper with invisible fluorescent developing function. Background technique [0002] When thermal paper is used, it relies on the heat transfer of the print head of the thermal printer. After the colorless dye and the developer are melted, a color reaction occurs to present certain information content. At present, the imaging of thermal paper is generally black, and the commonly used The leuco dye is a fluoran substance, and the color developer is an acidic phenolic substance. When the image after printing and color development encounters certain harsh conditions, such as water, oil, solvents, etc., the thermal image is prone to fading. Usually, in order to overcome the influence of these environments, the relatively stable chemical structure is generally preferred. Color dyes and color deve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/20C09D1/00C09D125/14C09D129/04C09D133/00C09D7/61
CPCC08K3/26C08K2003/265C09D1/00C09D7/61C09D7/70C09D125/14C09D129/04C09D133/00D21H27/20C08L29/04C08K5/09
Inventor 王道力钟亚伍唐宏磊
Owner JIANGSU WANBAO RUIDA HI TECH CO LTD