Alkyl salicylate developer resin for carbonless copy paper and imaging use
US5017546A · kind A · utility
9Cited by
16References
19Claims
0Family size
Inventors
Key dates
| Filing date | Jul 13, 1990 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Jul 13, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/155
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Phenol/aldehyde condensation products useful in the development of colored images from colorless dyes are disclosed. The phenol/aldehyde condensation products are produced by the interaction of an alkyl-substituted salicylic acid, an alkyl-substituted phenol, an aldehyde, and a metal source. The phenol/aldehyde condensation products are particularly useful in a photosensitive imaging system in which images are formed by the image-wise reaction of the developer with one or more chromogenic materials, and in carbonless copy paper systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.