Heat-sensitive recording material
US4523208A · kind A · utility
9Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1983 |
| Grant date | Jun 11, 1985 |
| Priority date | — |
| Expiry date | Nov 22, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/3333
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A heat-sensitive recording material comprises a heat-sensitive layer which is applied onto a base and contains a color-producing substance, which is usually colorless or only slightly colored, and an activator which, under the action of heat, causes the color-producing substance to produce a coloration. In accordance with the invention, the heat-sensitive layer contains a sulfonic acid ester, in particular of a secondary alcohol, as the activator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.