Thermal recording sheet
US5470816A · kind A · utility
15Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1994 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Jul 6, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G7/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In a thermal recording sheet having a thermal recording layer containing a colorless or pale colored dye precursor and a color developer reactable with the dye precursor upon heating to develop a color, a dimerized or trimerized urea compound is used as the color developer to obtain a thermal recording sheet which is superior in ground color stability and a thermal recording sheet having a reversible recordability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.