Method for preparation of printing plate by electrophotographic process
US5700612A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1996 |
| Grant date | Dec 23, 1997 |
| Priority date | — |
| Expiry date | Jun 11, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G13/283
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for preparation of a printing plate by an electrophotographic process comprising providing a peelable transfer layer (T) containing a resin (A) capable of being removed upon a chemical reaction treatment on an electrophotographic light-sensitive element, forming a toner image on the transfer layer by an electrophotographic process, providing an adhesive layer (M) containing a thermoplastic resin (B) only on the toner image, transferring the toner image together with the transfer layer (T) and the adhesive layer (M) from the electrophotographic light-sensitive element to a primary receptor, transferring the toner image together with the transfer layer (T) and the adhesive layer (M) from the primary receptor to a receiving material having a surface capable of providing a hydrophilic surface suitable for lithographic printing at the time of printing, and then removing the transfer layer (T) in the non-image portion on the receiving material by the chemical reaction treatment. According to the method of the present invention, printing plates which produce prints of good image qualities having a lage proportion of image areas can be continuously obtained in a stable manner for …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.