Wet offset printing form

Details Wet offset printing form Wet offset printing form

2006-05-30

2006-05-30

Hirshfeld, Andrew H. (Department: 2854)

Printing

Planographic

Lithographic printing plates

C101S453000, C101S458000, C101S463100, C101S467000, C430S302000

Reexamination Certificate

active

07051652

ABSTRACT:
A wet offset printing form has atop layer containing a photocatalytically and thermally modifiable material. The material can be brought photocatalytically into a hydrophilic state by irradiation with light and into a lipophilic state by heating. The hydrophilic state forms a surface that can be illustrated and the lipophilic state forms an illustrated surface. The top layer of the wet offset printing form may contain absorption centers for irradiation, especially for laser radiation in the NIR range, with which heating of the top layer in the pattern of an image is brought about.

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