Photocopying – Projection printing and copying cameras – Plural
Patent
1974-08-28
1976-04-20
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Plural
355 54, 355 71, G03B 2744, G03B 2776
Patent
active
039515451
ABSTRACT:
Photographic printers of versatile character are taught. Disclosed is a printer having a lens carrier assembly which includes at least one subassembly of shiftable lens boards adapted to be moved in and out of an operative position for photographic printing. The subassembly can be moved as a unit out of engagable relationship with power means for shifting the lens boards. The power means for shifting the lens boards is not moved with the subassembly. An alternate subassembly may then be moved into position for operation by the power means. Disclosed also is a composite lens carrier assembly which, as a complete unit, can be entirely removed from a printing apparatus to permit an alternate assembly to be inserted. Additionally disclosed is a new location for a shutter mechanism, at the window into a chamber for the light-sensitive print material. Further, there is disclosed a new negative holder assembly of removable and replaceable elements. This negative holder assembly is capable of a 90.degree. rotary shift and has means for parting a negative mask from a back-up plate in a manner freeing an operator's hands for other tasks. The disclosure permits a photofinisher to employ essentially one basic printing machine, with easily changed elements, for package printing as well as enlargement printing from almost any size of negative.
REFERENCES:
patent: 3169441 (1965-02-01), Johnson
patent: 3212396 (1965-10-01), Schwardt et al.
patent: 3424527 (1969-01-01), Bremson, Jr.
patent: 3588248 (1971-06-01), Freund et al.
patent: 3689149 (1972-09-01), Livingood
Baker Robert C.
Lucht Engineering, Inc.
Wintercorn Richard A.
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