Heat-sensitive recording material

US10850546B2 · kind B2 · utility

Assignee

• MITSUBISHI HITEC PAPER EUROPE GMBH · DE

Inventors

• Claas Boxhammer · Herford, DE
• Martin Schreer · Melle, DE

Key dates

• Filing date: Sep 29, 2017
• Grant date: Dec 1, 2020
• Expiry date: Sep 29, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41M2205/04
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A heat-sensitive recording material having i) a carrier substrate and ii) a heat-sensitive recording layer. The heat-sensitive recording layer contains a color former and a color developer mixture and the color developer mixture contains a) N/-[2-(3-phenylureido)phenyl]benzole sulfonamide (compound of formula (I)). The compound of formula (I) is present in a crystalline form, which has an absorption band in the IR spectrum at 3401±20 cm−1, and b) N-(4-methylphenylsulfonyl)-N-(3-(4-methylphenylsulfonyloxy)phenyl)urea (compound of formula (II)).