Flexographic element having an integral thermally bleachable...

Details Flexographic element having an integral thermally bleachable... Flexographic element having an integral thermally bleachable...

2005-05-17

2005-05-17

Huff, Mark F. (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

C430S281100, C430S306000, C430S348000, C430S434000, C430S494000, C430S512000

Reexamination Certificate

active

06893796

ABSTRACT:
An imageable element useful as a flexographic printing plate precursor is disclosed. The element is made up of a flexible substrate; a photosensitive layer, which contains a negative working photosensitive composition; an optional barrier layer; and a masking layer. The masking layer is thermally bleachable, comprises a dye that typically has an absorption maximum between about 250 nm and about 600 nm, more typically between about 300 nm and about 500 nm, and is substantially free of photothermal conversion materials.

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