Thermal printing paper with good color rendering property and processing technology thereof

Abstract

The invention discloses a thermal printing paper with good color rendering property. The thermal printing paper comprises the following components: 45-55 parts of a degradable inorganic filler, 0.2-0.4 part of N-dimethylformamide, 0.8-1.2 parts of p-toluenesulfonic acid, 0.3-0.5 part of trifluoromethanesulfonic anhydride, 5-8 parts of aluminum acetate, 13-15 parts of p-hydroxybenzoic acid, 3-5 parts of beewax, 2-4 parts of a film forming agent, 2-3 parts of an antioxidant and 1-2 parts of an ultraviolet light absorber. The processing technique comprises the following steps: proportionally weighing a proper amount of N-dimethylformamide, p-toluenesulfonic acid and trifluoromethanesulfonic anhydride, mixing with an organic solvent to obtain a mixed solution, adding a degradable inorganic filler, continuing stirring and mixing to obtain a color developing layer coating, uniformly coating the base paper base layer with the color developing layer coating, spraying the color developing layerwith a mixed solution of aluminum acetate and p-hydroxybenzoic acid, weighing a proper amount of beeswax in proportion, adding an organic solvent mixed solution, heating the beeswax dissolved solution to 40-45 DEG C, adding the film forming agent, the antioxidant and the ultraviolet light absorber, carrying out stirring and mixing, and uniformly coating a display layer with a protective layer solution.

Description

technical field [0001] The invention relates to the technical field of office supplies, in particular to thermal printing paper with good color rendering and its processing technology. Background technique [0002] Thermal paper is also known as thermal fax paper, thermal recording paper, and thermal copy paper. Thermal paper is a kind of processed paper. Its manufacturing principle is to coat a layer of "thermal coating" on high-quality base paper ( thermochromic layer). The production principle of thermal paper is to coat the particle powder on the ordinary paper base. Colored handwriting on the paper is unstable and easily faded, making the content of the document difficult to read. Although there are more than a dozen kinds of chemicals used in this color-changing layer, there are at least the following compounds: leuco dyes, which have a wide variety of dyes, and fluorescent compounds are the most commonly used; Phenol and p-hydroxybenzoic acid; sensitizers account f...

AI Technical Summary

Problems solved by technology

However, the color rendering effect of existing thermal printing paper is mediocre, and the printing effect is difficult to meet higher requirements, and too many chemicals are added in the manufacturing process, which is difficult to degrade and recycle, causing environmental pollution