On the press development of a diazo based printing plate
US5776653A · kind A · utility
1Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1996 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Dec 4, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/305
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to the present invention there is provided a method for making a lithographic printing plate comprising the steps of: PA1 (1) image-wise exposing an imaging element having of a flexible film support in the order given (i) a uniform ink-repellant layer comprising a cross-linked hydrophilic binder and (ii) a photosensitive layer comprising a diazonium salt or a diazo resin; PA1 (2) and developing a thus obtained image-wise exposed imaging element by mounting it on a print cylinder of a printing press and wiping it with a disposable absorbing tissue moistened with water or fountain solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.