Method for treating lithographic printing plates

Details Method for treating lithographic printing plates Method for treating lithographic printing plates

1981-07-22

1982-11-30

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

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

Diffusion transfer process, element, or identified image...

430302, 430309, 430331, G03C 702, G03C 554

Patent

active

043616399

ABSTRACT:
Surface treatment of lithographic printing plate which utilizes as ink receptive areas a photographically formed image silver per se or image silver halide per se is carried out in the presence of an organic compound having at least one mercapto or thione group and at least one hydrophilic group in the same molecule and an inorganic water-insoluble fine powder having a particle size of 0.1.mu. or less after imagewise exposure of a silver halide emulsion layer and processing thereof to develop an image, whereby ink receptivity, anti-staining property and printing endurance of the plate can be improved.

REFERENCES:
patent: 3547641 (1970-12-01), Blake
patent: 3592647 (1971-07-01), Blake
patent: 3736871 (1973-06-01), Blake
patent: 4297429 (1981-10-01), Kanada et al.
patent: 4297430 (1981-10-01), Kanada et al.

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