Method for preparation of waterless lithographic printing plate

Details Method for preparation of waterless lithographic printing plate Method for preparation of waterless lithographic printing plate

1997-12-10

1999-07-27

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

To produce printing surface

430126, G03G 1316, G03G 1332

Patent

active

059288230

ABSTRACT:
A method for preparation of a waterless lithographic printing plate by an electrophotographic process comprising providing a peelable transfer layer (T) containing a thermoplastic resin (A) on a surface of an electrophotographic light-sensitive element, forming a non-fixing toner image by an electrophotographic process using a liquid developer on the transfer layer, transferring the toner image together with the transfer layer (T) from the electrophotographic light-sensitive element onto a support for lithographic printing plate, providing on the transfer layer (T) a non-tacky resin layer having adhesion to the transfer layer (T) 180 gram-force larger than adhesion between the toner image and a surface of the support for lithographic printing plate, and selectively removing the non-tacky resin layer and the transfer layer (T) existing on the toner image.
The method is suitable for a scanning exposure system using a laser beam of a low power, and simply and rapidly provides a waterless lithographic printing plate excellent in image qualities and printing durability.

REFERENCES:
patent: 5658701 (1997-08-01), Kato
patent: 5683841 (1997-11-01), Kato
patent: 5728497 (1998-03-01), Kato et al.
patent: 5731115 (1998-03-01), Kato et al.

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