Automatic lithographic plate processor

Details Automatic lithographic plate processor Automatic lithographic plate processor

1977-09-06

1979-12-11

Wintercorn, Richard A.

Photocopying

Contact printing

Machine

118 37, 118 58, 271 11, 354318, 355132, 414112, G03B 2730

Patent

active

041780973

ABSTRACT:
Method and apparatus for automatically producing finished lithographic plates from supplies of blank plates and negatives. The apparatus provides automatic sequential steps of coating and punching the blank plates, exposing the plates through the negatives, developing and bending the plates, and delivering them to an exit station. Vacuum locks are utilized for registration throughout the apparatus to provide positive registration and prevent injury to the plates or negatives. A vacuum locked registration carriage provides positive registration between a plate to be exposed and a negative and vacuum locks are provided in the exposure station which cooperate with the carriage. The apparatus is completely enclosed to prevent contamination by dust or the like.

REFERENCES:
patent: 3448720 (1969-06-01), Graham
patent: 3520606 (1970-07-01), Gush et al.
patent: 3597080 (1971-08-01), Gush et al.
patent: 3608464 (1971-09-01), Harrell et al.
patent: 3635559 (1972-01-01), Harrell et al.
patent: 3751164 (1973-08-01), Miller et al.
patent: 3813162 (1974-05-01), Watabe et al.
patent: 3848998 (1974-11-01), Yonekura et al.
patent: 4070110 (1978-01-01), Ott

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