Method for preparation of printing plate by electrophotographic

Details Method for preparation of printing plate by electrophotographic Method for preparation of printing plate by electrophotographic

1995-04-21

1996-10-01

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

To produce printing surface

355271, G03G 1326

Patent

active

055610145

ABSTRACT:
A method for preparation of a printing plate by an electrophotographic process comprising forming a toner image on an electrophotographic light-sensitive element by an electrophotographic process, providing a peelable transfer layer mainly containing a resin (A) capable of being removed upon a chemical reaction treatment on the toner image, transferring the toner image together with the transfer layer from the light-sensitive element to a receiving material having a surface capable of providing a hydrophilic surface suitable for lithographic printing at the time of printing, and removing the transfer layer in the non-image area by the chemical reaction treatment.
According to the method, good duplicated images are formed without taking the electrophotographic characteristics of transfer layer used into consideration. The transfer layer is excellent in transferability and dissolution property and a shortened period of plate making and improved durability of light-sensitive element can be achieved. A conventional electrophotographic light-sensitive element can be utilized by applying a compound (S) for imparting the desired releasability to the surface thereof.
An apparatus suitable for use in the method is also disclosed.

REFERENCES:
patent: 5227272 (1993-07-01), Kato
patent: 5232893 (1993-08-01), Kawasaki et al.

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