Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1974-05-08
1976-08-17
Gilreath, Stanley N.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 673R, 242 754, 355 16, B65H 1704, B65H 2306
Patent
active
039749746
ABSTRACT:
A device for imparting back tension of a predetermined magnitude to the portion of strip material disposed between a take-up reel and a supply reel when the strip material wound at one end on the supply reel and at the other end on the take-up reel is paid out of the supply reel by rotating the take-up reel. The device has particular utility in an electrophotographic copying apparatus employing a photosensitive drum in which a strip of photoconductive film is interchangeably mounted and comprises a novel mechanism, light in weight and low in cost, which has the effect of imparting to the strip back tension which it is required to have when in use and yet enabling the strip to be advanced and wound on the take-up reel with the exercise of a force slightly in excess of the back tension present in the strip.
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patent: 1969877 (1934-08-01), Doty
patent: 2139784 (1938-12-01), Wengel
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patent: 3588242 (1971-06-01), Berlier
patent: 3826570 (1974-07-01), Kolibas
Gilreath Stanley N.
Jillions John M.
Ricoh Co. Ltd.
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