Reversible thermosensitive coloring composition and a thermosensitive recording medium using thereof
US5641724A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Sep 29, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/3333
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention generally relates to a reversible thermosensitive coloring composition and a thermosensitive recording medium using thereof which have high light-resisting characteristics, wherein coloring and decolorizing can be repeated suitably. A reversible thermosensitive coloring composition of this invention comprises an electron donating chromophoric compound and an electron accepting compound, which has a colored state and a decolorized state based on a heated temperature and a difference between cooling speeds after being heated, said electron donating chromophoric compound including a compound having a general formula (I) ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.