Heat-sensitive recording material
US4401717A · kind A · utility
20Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1981 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Nov 23, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/913
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A heat-sensitive recording material comprising a base and one or more heat-sensitive color-forming layers containing an electron donating colorless dye and an electron accepting organic compound is disclosed, wherein at least one of said color-forming layers contains a urea derivative having a least 7 carbon atoms or a urethane derivative having at least 8 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.