Color proofing method and article
US4657831A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1986 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Mar 11, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F3/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Electrophotographic color proofs of half-tone dot pattern images are made which closely simulate the dot gain of prints made with lithographic plates and liquid inks. In forming the color proof, a thin transparent plastic sheet having on one side an electrophotographic toner dot pattern image is laminated to a reflective support with the toner image side in contact with the support. A thicker transparent plastic sheet is laminated to the other side of the thin sheet. The resulting color proof comprising a toner dot pattern on a reflective support and covered by a thin transparent layer and a thicker transparent layer has an apparent increase in dot size which simulates that of a press print.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.