Title: Apparatus for automatically processing photopolymer plates

Abstract: An apparatus for processing photopolymer plates includes an exposure unit, a washing unit, and a drying unit. The plate, which has a water-developable photopolymer surface, is continuously conveyed through each unit so that the functions therein performed, are done automatically. More particularly, exposure is accomplished by bringing a negative photographic image into alignment with the water-developable photopolymer plate, and then passing light through the negative and onto portions of the plate. Unexposed areas of the plate are then washed away in the washing unit, thus producing a relief surface necessary for letter-press printing. Finally, the photopolymer plate is conveyed to the drying unit where drying and postcuring take place.

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Inventors: Tsuchida, Shozo (Kawashishi, JA)
Okai, Sakuo (Joyoshi, JA)

Application Number: 390874
Filing Date: 1973-08-23
Publication_date: 1976-09-21
Assignee: Nippon Paint Co., Ltd. (Osaka, JA)
Primary Class(es): 355/100 355/85, 396/627
Other Classes:
US Patent Ref:

2404138	Jul, 1946	Mayer	354/317.
2555874	Jun, 1951	Coughlin	354/317.
2677320	May, 1954	Coughlin	354/317.
3085488	Apr, 1963	Heiart	355/100.
3230857	Jan, 1966	Ritzerfeld et al.	355/89.
3271226	Sep, 1966	Staehle et al.	354/297.
3608464	Sep, 1971	Harrell et al.	354/317.
3751164	Aug, 1973	Miller et al.	355/100.
3848998	Nov, 1974	Yonekura et al.	355/100.

Other Refs:
Primary Examiner: Braun, Fred L.
Assistant Examiner:
Attorney: Hume, Clement, Brinks, Willian, Olds & Cook, Ltd.