Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – To produce printing surface
Patent
1996-11-15
1997-11-04
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 1328
Patent
active
056838417
ABSTRACT:
A method for preparation of a waterless lithographic printing plate by an electrophotographic process comprising forming a non-fixing toner image by an electrophotographic process using a liquid developer on a surface of an electrophotographic light-sensitive element, providing a peelable transfer layer (T) containing a thermoplastic resin (A) on the surface of electrophotographic light-sensitive element having the toner image, 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) bearing the toner image a non-tacky resin layer having adhesion to the transfer layer (T) larger than adhesion between the toner image and the non-tacky resin layer, and selectively removing the non-tacky resin layer provided on the toner image. The method is suitable for a scanning exposure system using a laser beam of a low power, and provides a waterless lithographic printing plate excellent in image qualities and printing durability in a simple, rapid and laborsaving manner. Also, according to the method of the present invention the non-tacky resin layer can be selectively removed in the toner image portion by a dry process and a highly accurate image is obtained in a stable manner even when a condition of the removing step is fluctuated.
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Fuji Photo Film Co. , Ltd.
Martin Roland
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