Photocopying – Including fiber optics
Patent
1980-01-31
1981-09-01
Hix, L. T.
Photocopying
Including fiber optics
355 41, 355 45, 355 55, G03B 1326, G03B 2752, G03G 1500
Patent
active
042868645
ABSTRACT:
A photoplastic film recording and monitoring apparatus has a rotatable mirror which in one position establishes a first optical path from a copy holding station through an objective lens to an image plane where a platen is provided for supporting a transmissively readable fiche of photoplastic film. In a second position of the rotatable mirror a second optical path is established from a projection light source through the image plane and the objective lens onto a viewing screen. In one embodiment a lens turret has a plurality of lenses of different focal lengths for providing different magnification ratios in order to photograph different size original copy. System controls are provided for automatically reverting to that one of the lenses which affords full screen projection of the image from the fiche frame onto the viewing screen regardless of the reduction ratio chosen for photocopying. Manual focusing adjustment is afforded only in the monitor mode and such adjustment is disengaged in the photocopying mode. The hot block for developing images in the various frames of the fiche is arranged to function as a valve for developing a vacuum on the underside of the fiche when the hot block is applied thereto for snugging the fiche thereagainst. An additional valving mechanism within the hot block provides rapid release of the vacuum when the hot block is retracted. In a modification, a light sensing diode and light source are employed to detect deformation of the film within a fiche frame as evidence of prior image recording thereon. A light shutter is provided for preventing fogging and blurring of an image during photocopying.
REFERENCES:
patent: 3547628 (1970-12-01), Wolff
patent: 3697176 (1972-10-01), Kuehnle et al.
patent: 3781106 (1973-12-01), Lysle
patent: 3972610 (1976-08-01), Gross
patent: 3988064 (1976-10-01), Sone et al.
patent: 3992090 (1976-11-01), Lysle
patent: 4079388 (1978-03-01), Takahama et al.
Baur Kenneth R.
Lysle Gordon
Bell & Howell Company
Brady W. J.
Hix L. T,.
LandOfFree
Photoplastic film recording and monitoring apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photoplastic film recording and monitoring apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photoplastic film recording and monitoring apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1673275