Heat-sensitive imaging material and method for making on-press lithographic printing plates requiring no separate processing
US6068965A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1999 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Feb 1, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
According to the present invention there is provided a method for making on-press lithographic printing plates which require no processing. The method comprises the steps of: PA0 a. mounting a heat-sensitive imaging material, comprising on a lithographic base having a hydrophilic surface, a metallic layer or a metal oxide layer and on top thereof an oleophobic layer having a thickness of less than 5 .mu.m, on a print cylinder of a printing press; PA0 b. image-wise exposing said imaging material with an IR-laser; PA0 c. rotating said print cylinder while supplying an aqueous dampening liquid and/or ink to said image forming layer of said imaging material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.