Overhead exposure unit

Details Overhead exposure unit Overhead exposure unit

1989-08-29

1991-03-19

Hix, L. T.

Photocopying

Contact printing

Superimposed carriers

G03B 2702

Patent

active

050015141

ABSTRACT:
An overhead exposure unit includes a light source for exposing sheets of light sensitive material carried on a supporting table. The light source is mounted at a fixed elevation above a floor or other surface and a support system is provided for moving the film support table up and down beneath the light source to provide the desired distance between the light source and the film for making plates or other photographic reproductions. The film support table is movable between a convenient working level and is raised or lowered to the selected level to provide a desired spacing or distance between the light source and the film while controlled light exposure takes place.

REFERENCES:
patent: 2679189 (1954-05-01), Burns
patent: 4080070 (1978-03-01), Spence-Bate
patent: 4218137 (1980-08-01), Smith et al.
patent: 4676630 (1987-06-01), Matsushita et al.
patent: 4764794 (1988-08-01), Fujii
patent: 4811059 (1989-03-01), Hamaski et al.

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