Photocopying – Projection printing and copying cameras – Identifying – composing – or selecting
Patent
1988-08-01
1990-06-12
Hix, L. T.
Photocopying
Projection printing and copying cameras
Identifying, composing, or selecting
355 68, 355 77, G03B 2752
Patent
active
049337130
ABSTRACT:
A photographic printing method and apparatus therefor having a pulse motor for transporting a photograhic film to place a picture frame in a printing position. In order to avoid an occurrence of cumulative position error, position data of each picture frame is provided in the form of a combination of the number of perforation holes and the number of driving pulses applied to the pulse motor while edges of each two adjacent perforation holes are detected. In a film inspection process, the position data is stored in a memory after having placing each picture frame in the printing position. The position data of each picture frame is read out in a printing process and compared with present position signals of the picture frame of the film being transported. Upon an occurrence of coincidence between the position data read out from the memory and the position data presently detected, the pulse motor is controlled to stop, thereby placing the picture frame in the same printing position as where the picture frame is placed in the inspection process.
REFERENCES:
patent: 4485949 (1984-12-01), Gebhart et al.
patent: 4727399 (1988-02-01), Matsumoto
patent: 4806990 (1989-02-01), Tahara
Tsuji Junichi
Ujiie Yoichi
Fuji Photo Film Co. , Ltd.
Hix L. T,.
Rutledge D.
LandOfFree
Photographic printing method and apparatus therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photographic printing method and apparatus therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photographic printing method and apparatus therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-620498