Microfilm camera apparatus

Details Microfilm camera apparatus Microfilm camera apparatus

1974-12-20

1977-04-05

O'Connor, Edna M.

Photocopying

Projection printing and copying cameras

Detailed holder for photosensitive paper

355 52, 355 73, 355 75, G03B 2758

Patent

active

040159035

ABSTRACT:
A microfilm camera has a carrier plate for holding a film sheet and a slidable carriage for sliding the carrier plate into and out of an operative position. The carrier plate is secured to the slidable carriage either directly or via a guide bush by means of three retaining screws which form the angles of a triangle which includes the geometric center of the carrier plate. Associated with each retaining screw is a support screw by means of which the distance between the carrier plate and the slidable carriage can be adjusted at each of the angles of the triangle. To enable the adjustment to be made by means of an auto-collimator, the carrier plate may be mirror-coated or the surface thereof which is intended to hold the film sheet.

REFERENCES:
patent: 3204544 (1965-09-01), Shannon
patent: 3498711 (1970-03-01), Ables et al.
patent: 3670102 (1972-06-01), Marez
patent: 3711197 (1973-01-01), Paull
patent: 3802758 (1974-04-01), Havener et al.
patent: 3837742 (1974-09-01), Wally, Jr.
patent: 3840300 (1974-10-01), Vane
patent: 3856398 (1974-12-01), Taylor

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