Thermographic and photothermographic materials for producing lit

Details Thermographic and photothermographic materials for producing lit Thermographic and photothermographic materials for producing lit

1996-09-09

1999-10-26

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Imagewise heating, element or image receiving layers...

430204, 430205, 430254, 4302711, 4302731, 4302781, 430302, 430330, 430964, 503227, G03F 734, G03F 706

Patent

active

059725567

ABSTRACT:
A (photo)thermographic material is provided, capable of being used to produce a lithographic printing plate, comprising a support, a hydrophobic thermosensitive layer and a hydrophilic surface adjoining the hydrophobic thermosensitive layer, the thermosensitive layer containing an ingredient A, for example a substantially light-insensitive organic silver salt, which upon negative or positive image-wise heating reacts with at least one other ingredient B, for example a reducing agent therefor, in thermal working relationship therewith, producing a moiety which changes the adhesion between the thermosensitive layer and an adjoining hydrophilic surface to an extent such that negative or positive image-wise separation of the hydrophobic thermosensitive layer from the adjoining hydrophilic surface is enabled.

REFERENCES:
patent: 3679414 (1972-07-01), Mukherjee
patent: 4985339 (1991-01-01), Koizumi et al.
patent: 5122443 (1992-06-01), Takeda
patent: 5166040 (1992-11-01), Takeda
patent: 5290659 (1994-03-01), Takeda
patent: 5409798 (1995-04-01), Kondo et al.
patent: 5533452 (1996-07-01), Mouri et al.

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