Thermally-responsive record material
US5124307A · kind A · utility
0Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1991 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Aug 15, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/3335
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A novel thermally-responsive record material is disclosed comprising a support having provided thereon in substantially contiguous relationship an electron donating dye precursor and a fluorene bisphenol of the formula ##STR1## wherein each R is independently selected from hydrogen and C.sub.1 to C.sub.8 alkyl, PA1 and a suitable binder therefor. The record material according to the invention when imaged resists fade when contacted with certain environmental challenges including oils, solvents, and elevated temperatures, all of which can be encountered in the environments of use of these record materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.