Imaging media containing hindered amine light stabilizers or nitrones
US5153169A · kind A · utility
24Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1991 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | May 6, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/323
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An imaging medium has at least one color-forming layer comprising a thermal color-forming composition adapted to undergo a change of color upon increase in the temperature of the color-forming layer above a color-forming temperature for a color-forming time, the color-forming layer further comprising a color stabilizer which is a hindered amine light stabilizer or a nitrones. The color stabilizer prevents development of color in the medium during storage before or after imaging, thereby reducing the minimum optical density of the imaged medium and/or color distortion in the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.