Heat-sensitive recording sheet
US4502066A · kind A · utility
8Cited by
0References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1983 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | Aug 17, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/3335
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Heat-sensitive recording sheet comprising a base sheet and a color-forming layer including a colorless basic dyestuff and a mono-phenolic 4-hydroxyphenyl compound which is reactive with said dyestuff by heating, wherein said color-forming layer comprises a metal salt of p-alkylbenzoic acid or a metal salt of o-benzoylbenzoic acid (having a particular formula). The sheet provides superior stability against contamination with oily substances while keeping excellent fundamental qualities thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.