Printing – Intaglio – Processes
Patent
1992-12-04
1993-09-28
Burr, Edgar S.
Printing
Intaglio
Processes
1014011, 101395, 21912168, 21912175, 21912178, 346108, B41C 105, B23K 2606
Patent
active
052478831
ABSTRACT:
An apparatus for making a printing plate in which a printing plate made of a thermoplastic resin sheet is wrapped around a plate cylinder and a laser beam from a laser source is irradiated on the printing plate to form holes in accordance with image information is comprised of an angle adjusting means for adjusting an irradiation angle of the laser beam from the laser source and control device for controlling the irradiation start position of the laser beam such that holes on the printing plate are made continuous at a predetermined angle. Thus, a printing plate having various dot patterns can be obtained only by adjusting the optical system of this apparatus and a printed product in which the occurrence of moire can be avoided can be obtained.
REFERENCES:
patent: 2662455 (1949-06-01), Freund
patent: 3985953 (1976-10-01), Dunkley
patent: 4149183 (1979-04-01), Pellar et al.
patent: 4388865 (1983-06-01), Kellner
patent: 4395946 (1983-08-01), Price
patent: 4812861 (1989-03-01), Sasaki et al.
patent: 4900649 (1990-02-01), Mochizuki et al.
Patent Abstracts of Japan, Publication No. JP62238743 (Atsushi et al.).
Hirashima Shigeyoshi
Ito Tatsumi
Kuwahara Sohichi
Burr Edgar S.
Eslinger Lewis H.
Funk Stephen R.
Maioli Jay H.
Sony Corporation
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