Record material
US4880766A · kind A · utility
8Cited by
3References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1988 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Mar 23, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/914
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A color developer material comprising a homogeneous mixture of a color developer containing a certain weight percent phenolic group, divalent zinc, and an aromatic carboxylate component possessing certain properties. These mixtures are particularly useful as color developer materials for basic chromogenic materials in either pressure-sensitive or heat-sensitive record materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.