Photographic exposure apparatus

Details Photographic exposure apparatus Photographic exposure apparatus

1974-11-15

1976-04-13

Wintercorn, Richard A.

Photocopying

Contact printing

With scanning

355 99, G03B 2710

Patent

active

RE0287709

ABSTRACT:
A portable photographic exposure apparatus for making reproductions of loft drawings, body drafts or the like directly from the drawing table on which the drawing is made. A wheeled cabinet structure has a horizontal supporting surface, the height of which is adjustable to the height of a drawing table, with an exposure unit adapted to be mounted on the supporting surface and containing a light source, a set of electric motor driven wheels, and a source of static electricity. The exposure unit is driven over the drawing table to expose a sheet of film which is laid over the drawing on the drawing table to reproduce the drawing. Static electricity projected by the exposure unit presses the film firmly against the drawing to be reproduced. The electric motor is reversible to return the exposure unit to its supporting cabinet. The apparatus may also be used to expose a negative which is subsequently processed to provide positive reproductions of the loft drawing.

REFERENCES:
patent: 2518208 (1950-08-01), Weiss
patent: 2550640 (1951-04-01), Frantz
patent: 3254586 (1966-06-01), Haus
patent: 3303763 (1967-02-01), Kent et al.
patent: 3385192 (1968-05-01), Qwarfort
patent: 3655970 (1972-04-01), Betzler

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