Photocopying – Projection printing and copying cameras – Detailed holder for original
Patent
1993-05-20
1994-08-30
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Detailed holder for original
352 80, 355 54, G03B 2762
Patent
active
053432720
ABSTRACT:
A film drive mechanism for positioning film relative to the optical stage of a commercial printer. The mechanism includes a film drive assembly and a mount base assembly. The film drive assembly includes an elongated frame member, a feed spool mounted on one end of the frame member, a takeup spool mounted on the other end of the frame member, and guide means for moving the film between the spools along a longitudinal feed path. The film drive assembly is mounted for lateral movement on the mount base assembly. The film drive assembly is adjusted on the mount base assembly for a particular width of film by a selector knob positioned on a selector shaft carried by the film drive unit and including a plurality of tabs selectively coacting with a detent in a guide shaft carried by the mount base. Fine adjustment of the film drive assembly relative to the mount base assembly to accommodate the cropping requirements of each frame of the film is accomplished by a driven pulley carried by the film drive assembly and threadably engaging the selector shaft with the selector shaft restrained against rotation so that rotation of the pulley moves the film drive assembly along the axis of the selector shaft.
REFERENCES:
patent: Re28046 (1974-06-01), Renold
patent: 3910698 (1975-10-01), Sone et al.
patent: 4501489 (1985-02-01), Goulard et al.
patent: 4652117 (1987-03-01), Kogane et al.
patent: 4908657 (1990-03-01), Kogane
patent: 5097292 (1992-03-01), Hicks
patent: 5146266 (1992-09-01), Hicks
patent: 5257066 (1993-10-01), Hicks
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