Thermal recording device

A thermal recording material with N,N'-diarylurea and urea urethane compounds addresses image fading issues by enhancing alcohol resistance and heat resistance, ensuring durability against chemicals and microwave heating.

JP2026090861APending Publication Date: 2026-06-03OJI HLDG CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
OJI HLDG CORP
Filing Date
2024-11-22
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

Thermal recording materials face issues with insufficient alcohol resistance, heat resistance, and bleach resistance, leading to image fading and color changes in high-temperature, high-humidity environments or when exposed to chemicals like alcohol and chlorine bleach.

Method used

A thermal recording material comprising a thermal recording layer with a specific formulation of N,N'-diarylurea compounds and urea urethane compounds, such as 5-(N-3-methylphenyl-sulfonamide)-N''-bis-(3-methylphenyl)-isophthalic acid diamide, enhances alcohol resistance and heat resistance, particularly against microwave heating and chlorine-based bleaches.

Benefits of technology

The material exhibits improved alcohol resistance, heat resistance, and bleach resistance, maintaining image integrity under challenging conditions.

✦ Generated by Eureka AI based on patent content.

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  • Figure 2026090861000001
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Abstract

To provide a thermal recording medium with excellent alcohol resistance, heat resistance, and bleach resistance. [Solution] A thermal recording body comprising a thermal recording layer on a support containing at least a leuco dye, a color developer and an adhesive, wherein the main first color developer of the thermal recording layer is general formula (1): TIFF2026090861000008.tif30170 It contains a compound represented by the formula (2): TIFF2026090861000009.tif22170 A thermal recording body characterized by containing a urea urethane compound represented by and at least one selected from 5-(N-3-methylphenyl-sulfonamide)-N',N''-bis-(3-methylphenyl)-isophthalic acid diamide.
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Citation Information

Patent Citations

  • Thermal recording medium

    JP6960562B2

  • Thermal recording medium

    JP6971434B1