Process for producing support for lithographic printing plate

Details Process for producing support for lithographic printing plate Process for producing support for lithographic printing plate

1988-11-28

1990-03-20

Schor, Kenneth M.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

51321, 51326, 20412935, 156645, 156665, B44C 122, B41C 100, B24C 108

Patent

active

049098942

ABSTRACT:
A process for producing a support for a lithographic printing plate is described, which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream with a slurry containing a fine abrasive powder having a specific gravity of not less than 2.5 and having a sharp-angled tip having a radius of not more than 20 .mu.m, said slurry being spouted from at least one spout, directing the resulting mixed stream to strike against a surface of a metal sheet to carry out first graining, and modifying the first roughness thus formed on the metal sheet by brush graining to form a second roughness. Lithographic printing plates produced by using the resulting support are free from stain formation during printing and exhibit satisfactory printing durability.

REFERENCES:
patent: 4242417 (1980-12-01), Huang
patent: 4324841 (1982-04-01), Huang
patent: 4476006 (1984-10-01), Ohba et al.
patent: 4524125 (1985-06-01), Huang
patent: 4561944 (1985-12-01), Sasaki et al.
patent: 4613413 (1986-09-01), Uesugi et al.
patent: 4714528 (1987-12-01), Takeuchi et al.

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