Plate exposing apparatus and method

Details Plate exposing apparatus and method Plate exposing apparatus and method

1997-06-11

1999-04-06

Braun, Fred L

Photocopying

Contact printing

Exposing on sensitized printing press plate or cylinder

355 99, G03B 2704

Patent

active

058925740

ABSTRACT:
Apparatus for subjecting photosensitive letterpress lithographic plates to a pre-exposure operation and then to a main exposure operation. The apparatus includes a support for supporting a letterpress plate at a pre-exposure station, a pre-exposure system for pre-exposing a plate on the support, an infeed conveyor system for conveying a pre-exposed plate from the pre-exposure station to a main exposure station, a main exposure system at the main exposure station for exposing a pre-exposed plate, and an outfeed conveyor system for conveying a plate away from the main exposure station.

REFERENCES:
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patent: 3981583 (1976-09-01), Tsuchida et al.
patent: 4257323 (1981-03-01), Crasnianski
patent: 4423955 (1984-01-01), Powers
patent: 4591265 (1986-05-01), Sullivan
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patent: 4951089 (1990-08-01), Powers
patent: 5124745 (1992-06-01), Fischer et al.
patent: 5369468 (1994-11-01), Powers et al.
patent: 5390001 (1995-02-01), Ishiwata et al.
patent: 5425840 (1995-06-01), Ferrante
K&F Printing systems Int'l. entitled Plate Express II Copyright 1992, 4 pages.
K&F Printing Systems Int'l. Entitled Now, There's An Alternative, from News & Tech dated Jun. 1991, 1 page.

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