Thermographic element with improved anti-stick coating
US5578548A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1995 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Oct 16, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/49872
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermographic element containing: (a) a substrate; (b) an image-forming layer coated onto the substrate; and (c) overlaying the image-forming layer, a topcoat layer composed of the reaction product of (1) a polymer composed of interpolymerized units derived from: (i) about 45-65 wt % of vinyl-substituted aromatic monomer; (ii) about 15-30 wt % vinyl monomer containing a pendant nitrile group; (iii) about 5-30 wt % hydroxyl-containing; ethylenically-unsaturated monomer; and (2) a suitable crosslinking agent. A slip agent is optionally used. The topcoat layer provides a thermographic element with high gloss in the imaged areas; has excellent runnability with no chatter in the feed direction of the element; and exhibits no removal of topcoat which prevents formation of printhead-created voids in the imaged areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.