Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same
US5403810A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1993 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Nov 19, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/305
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A reversible thermosensitive coloring composition containing a coloring agent, a color developer and a guanidine derivative, the coloring composition capable of assuming a color development state when heated at a predetermined color development temperature at which the coloring composition is fused, and capable of assuming a decolorization state when heated at a predetermined temperature lower than the color development temperature. A reversible thermosensitive recording medium is also disclosed which is composed of a support and a thermosensitive recording layer formed thereon, containing the above-mentioned reversible thermosensitive coloring composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.