Apparatus for processing photographic sheet material

Details Apparatus for processing photographic sheet material Apparatus for processing photographic sheet material

1994-09-09

1995-09-19

Rutledge, D.

354318, G03D 500

Patent

active

054520410

ABSTRACT:
An apparatus for processing photographic sheet material comprises a housing, a first roller shaft supported within the housing and first and second processing rollers rotatable on respective roller shafts supported within the housing. The second processing roller lies substantially parallel to the first, and in line contact therewith. Biasing means bias the roller shafts towards each other. Means are provided for feeding photographic sheet material between the rollers. Each of the rollers has a radially outer zone formed of deformable material and has a radial dimension profile which varies along the length thereof. Such a roller construction enables the bleeding of images on aluminium lithographic printing plates processed by the apparatus to be reduced.

REFERENCES:
patent: 3877805 (1975-04-01), Heldenbrand et al.
patent: 4192229 (1980-03-01), Tsunoi et al.
patent: 4326791 (1982-04-01), Beer et al.
patent: 4719484 (1988-01-01), Tahara et al.
patent: 4864343 (1989-09-01), Nelson

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