Heat-sensitive recording material using chromeno compound
US4803193A · kind A · utility
8Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1987 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Dec 23, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/913
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a heat-sensitive recording material comprising on a substrate a recording layer containing a colorless or pale-colored basic dye and an electron accepting reactant material, the heat-sensitive recording material which is characterized in that the basic dye comprises at least one chromeno compound represented by the formula [I] below ##STR1## wherein G and R.sub.1 .about.R.sub.4 are defined in the specification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.