Heat sensitive imaging element and a method for producing lithographic plates therewith
US5858606A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Nov 24, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/165
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to the present invention there is provided a thermosensitive imaging element for obtaining a lithographic printing plate comprising on a hydrophilic surface of a support a layer comprising an organic metallic salt and in the same or an adjacent layer an organic reducing agent and a compound capable of converting light into heat, said organic metallic salt being reducible on heating by said reducing agent to an ink-accepting compound or to a compound which can react with a hydrophobizing agent to an ink-accepting compound, characterized in that said layer comprising an organic metallic salt comprises a hydrophobic binder in an amount between 0.00 g/m.sup.2 and 0.25 g/m.sup.2 and a hydrophilic binder in an amount between 0.00 g/m.sup.2 and 5.00 g/m.sup.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.