Thermally-responsive record material
US8916497B2 · kind B2 · utility
2Cited by
0References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2014 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Apr 29, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0614
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention describes a thermally-responsive record material substantially free of aromatic isocyanate. The record material comprises a support having provided thereon a heat-sensitive composition comprising a substantially colorless dye precursor comprising a fluoran; and a developer material selected from the group consisting of 4,4′-diaminodiphenylsulfone and 3,3′-diaminodiphenylsulfone in combination with N-[(butylamino)carbonyl]-4-methylbenzene sulfonamide, which upon being heated react with said dye precursor to develop color, and including a binder material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.