Thermally-responsive record material
US6015771A · kind A · utility
5Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1998 |
| Grant date | Jan 18, 2000 |
| Priority date | — |
| Expiry date | May 22, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/3375
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention discloses a novel thermally-responsive record material having coated thereon a thermally sensitive color forming composition comprising a chromogenic material, an acidic developer material and a carbamate of the formula ##STR1## wherein R is selected from alkyl, aryl or aralkyl. The alkyl moiety in each of the preceding is selected to be of from one to eight carbons. The novel record material displays enhanced image intensity or improved thermal response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.