Thermal recording medium
US7384891B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2003 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Dec 3, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/3336
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Provided is a thermally sensitive recording medium which exhibits high recording sensitivity, high heat resistance of ground color part and excellent preserving stability of images. A thermally sensitive recording medium, comprising a thermally sensitive recording layer containing a colorless or pale colored basic colorless dye and an organic color developing agent as main components on a substrate, wherein said thermally sensitive recording layer contains at least one compound represented by general formula (1) and contains at least one compound selected from the group consisting of 3-{[(phenylamino)carbonyl]amino}benzensulfoneamide represented by formula (2), an ureaurethane compound represented by formula (3) and a copolymer of glysidilmethacrylate and vinyl monomer (average molecular weight is 9000-11000, epoxy equivalent is 300-600 and melting point is 110° C. or less) as a stabilizer.(in the formula, R1 is a hydrogen atom, a halogen atom, an alkyl group or alkoxy group)As a color developing agent a compound represented by general formula (4) is desirable.(in the formula, R2 is an alkyl group of carbon number 1-4, an alkoxy group, a phenyl group or a hydrogen atom).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.