Method and assembly for producing printing plates

Details Method and assembly for producing printing plates Method and assembly for producing printing plates

1997-03-27

1998-09-29

Funk, Stephen R.

Printing

Printing members

Blanks and processes

430306, 355 99, G03F 726, G03B 2704

Patent

active

058133429

ABSTRACT:
Printing plates are formed from a layer of photo polymerizable resin by a process and assembly which includes a back masking negative placed over the non-printing side of the resin layer. A connective substrate is positioned between the back mask negative and the resin layer. A negative of the image or images to be formed on the printing plate is positioned on the side of the resin layer which is to form the printing surface of the plate. Both sides of the resin layer are exposed to UV light, and the back mask negative serves to allow hardening of the resin only in the areas of the resin layer where printing surfaces are located. Thus, a plurality of isolated printing surfaces may be formed on the plate, which printing surfaces are connected together by the connective substrate. In this manner, a photo polymerized floor need not be produced on the printing plates, allowing increased resin recovery after the plate has been formed.

REFERENCES:
patent: 3597080 (1971-08-01), Gush et al.
patent: 3619601 (1971-11-01), Gush et al.
patent: 4383759 (1983-05-01), Bloothoofd et al.
patent: 4600667 (1986-07-01), Uchida
patent: 4618550 (1986-10-01), Uchida
patent: 4927723 (1990-05-01), Cusdin
patent: 5213949 (1993-05-01), Kojima et al.
patent: 5275919 (1994-01-01), Kawatsuji et al.
patent: 5699739 (1997-12-01), Strong

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