Method for making a lithographic printing plate by image-wise he

Details Method for making a lithographic printing plate by image-wise he Method for making a lithographic printing plate by image-wise he

1996-11-12

1998-10-06

Funk, Stephen R.

Printing

Planographic

Lithographic plate making, and processes of making or using...

101462, B41C 110, B41M 536

Patent

active

058161627

ABSTRACT:
The present invention provides a method for making a lithographic printing plate wherein an imaging element is image-wise heated by means of a thermal head. The imaging element comprises on a flexible support (i) an ink-repellant layer containing a cross-linked hydrophilic binder and (ii) an image forming layer comprising hydrophobic thermoplastic polymer particles dispersed in a hydrophilic binder. Subsequent to image-wise heating, the imaging element is developed with water or an aqueous liquid. Development may also be carried out on-press. Moreover, image-wise heating and development can both be carried out on press.

REFERENCES:
patent: 3476937 (1969-11-01), Vrancken
patent: 4004924 (1977-01-01), Vrancken et al.
patent: 4258122 (1981-03-01), Uchida et al.
patent: 5409799 (1995-04-01), Uytterhoeven et al.
patent: 5569573 (1996-10-01), Takahashi et al.
patent: 5607816 (1997-03-01), Fitzgerald et al.
Research Disclosure, Jan. 1992, 33303, "A Lithographic Printing Plate", J. Vermeersch.

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