Sheet feeding or delivering – Feeding – By means to convey sheet
Patent
1976-08-04
1977-09-06
Saifer, Robert W.
Sheet feeding or delivering
Feeding
By means to convey sheet
226 90, B65H 2920
Patent
active
040463729
ABSTRACT:
Film transport apparatus for phototypesetters. The apparatus includes upper and lower guide plates supporting pinch and drive rollers, respectively, between which a strip of film is frictionally fed. A pair of hold-down rollers are provided to press the upper guide plate against the lower guide plate to maintain the pinch and drive rollers properly positioned against each other, and also to help keep the apparatus locked together during operation. The upper guide plate is designed to be laterally slidable relative to the lower guide and further is provided with a pair of notches cut into its sides. Accordingly, to load film into the apparatus, it is only necessary to slide the upper guide plate until the hold-down rollers become aligned with the notches at which position the upper guide plate can be lifted up and away from the lower guide plate to separate the pinch and drive rollers for film loading.
The apparatus can thereafter be reassembled by lowering the upper guide plate and sliding it back in the opposite direction until the hold-down rollers again engage the plate. Means are additionally provided to adjust the clearance between the upper and lower guide plates by adjusting the position of the hold-down rollers.
The system so provided avoids the need for hold-down screws or other more complex securing techniques and permits rapid and easy film loading with a minimum of machine down-time.
REFERENCES:
patent: 2841298 (1958-07-01), Walsh et al.
patent: 3330458 (1967-07-01), Bentzman
Blair Homer O.
Glanzman Gerald H.
Itek Corporation
Nathans Robert L.
Saifer Robert W.
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