Direct write waterless imaging member with improved ablation pro

Details Direct write waterless imaging member with improved ablation pro Direct write waterless imaging member with improved ablation pro

1999-07-30

2000-07-11

Funk, Stephen R.

Printing

Planographic

Lithographic printing plates

101457, 101467, 430303, B41N 114, G03F 7075

Patent

active

060856556

ABSTRACT:
A lithographic imaging member, such as a printing plate, has a support having thereon an ink-accepting melanophilic layer and an ink-rejecting siloxane surface melanophobic layer. Within the printing plate is a photothermal conversion material capable of converting irradiation, such as IR radiation, to heat in exposed regions. Also within one of the layers is a compound that upon imaging releases a moiety that facilitates degradation of the surface melanophobic layer. The released moiety can be fluoride ion or a fluoride ion-containing compound. In some imaging members, a barrier layer may be interposed between the two other layers. Such imaging members can be digitally imaged and used for printing without post-imaging processing.

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