Thermally sensitive recording medium
US6258747A · kind A · utility
3Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Jun 16, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/44
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermally sensitive recording medium having sufficient color developing density and which develops russet or wine red color. The recording medium incorporates a dye precursor which includes at least one red color developing leuco dye having a maximum absorption wavelength of 480 to 570 nm and at least one black color developing leuco dye with maximum absorption wavelengths at 420 to 480 nm and 550 to 640 nm. The color difference a* value of developed image of said thermally sensitive recording medium, measured according to JIS-Z-8729 is within the region of 0 to 50 and b* value is within the region of -15 to 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.