Positive working color proofing system comprising polyvinyl acetal/polyvinyl alcohol/polyvinyl acetate resin
US4948693A · kind A · utility
15Cited by
5References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1988 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Aug 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/0233
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention relates to positive working photosensitized sheet constructions which, upon exposure to an actinic radiation source through a screened image, can accurately reproduce said image. The construction is useful as a color proofing film which can be employed to predict the image quality from a lithographic printing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.