Thermally-responsive record material
US4470057A · kind A · utility
24Cited by
0References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1983 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | Mar 24, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/3375
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermally-sensitive color-forming composition is disclosed which comprises chromogenic material, acidic developer material and a phenylhydroxynaphthoate compound. Record material comprising this color-forming composition exhibits improved color-forming efficiency and/or image density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.