Negative film masking system in photographic processing and prin

Details Negative film masking system in photographic processing and prin Negative film masking system in photographic processing and prin

1994-05-27

1995-09-26

Gellner, Michael L.

Photocopying

Projection printing and copying cameras

Detailed holder for original

G03B 2762

Patent

active

054538173

ABSTRACT:
A negative film masking system for use in a photographic processing and printing machine includes a negative film masking assembly formed mainly of a mask and a negative film hold-down and a masking mount to which the negative film masking assembly is located. Photographic prints are produced from a negative film loaded in the negative film masking assembly and having standard size frames and panoramic size frames in random combination. A panoramic size frame is designated by masking both widthwise edges of the film in shooting to make two unexposed regions in a standard frame. The negative film masking system further includes a four-sided film gate aperture in the mask and which is identical in the size to the panoramic size frame and a four-sided film gate aperture in the negative film hold-down which is identical in the size to the four-sided film gate aperture of the mask. Detecting apertures in particular positions of the mask are spaced from the four-sided film gate aperture thereof at locations in the unexposed regions of the panoramic size frame. Detecting apertures in the negative film hold-down communicate with the detecting apertures of the mask.

REFERENCES:
patent: 4736228 (1988-04-01), Ito
patent: 4757353 (1988-07-01), Kitai et al.
patent: 4924258 (1990-05-01), Tsutsui
patent: 4965631 (1990-10-01), Ozawa
patent: 5003348 (1991-03-01), Howitt
patent: 5328073 (1994-07-01), Blanding
patent: 5328074 (1994-07-01), Blanding

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