Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1973-08-17
1976-03-02
Hix, L. T.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
96 15, 317 2H, 355 3R, 355 3DD, 355 15, G03G 1522
Patent
active
039414728
ABSTRACT:
An electrically insulated minor portion is provided on the periphery of a photosensitive drum comprising a cylindrical supporter, a photoconductive strip wound in roll form on a supply reel disposed in the interior of the cylindrical supporter and paid out thereof to apply a portion thereof to a major portion of the outer periphery of the cylindrical supporter so that the portion may serve as a photoreceptor on which an electrostatic latent image of an original to be copied is formed. The strip portion on the outer periphery is withdrawn and wound on a take-up reel that is also disposed in the interior of the cylindrical supporter. The minor portion of the outer periphery of the cylindrical supporter has on its surface an electrically insulating layer with electrical resistance in the range of 1 to 5 .times. 10.sup.9 .OMEGA.cm, the layer consisting of a material which is not charged by frictional contact with either the magnetic developing brush or the cleaning brush.
REFERENCES:
patent: 2277013 (1942-03-01), Carlson
patent: 2829025 (1958-04-01), Clemens et al.
patent: 3480361 (1969-11-01), Tatsumi Doi et al.
patent: 3588242 (1971-06-01), Berlier et al.
patent: 3610749 (1971-10-01), Madrid
patent: 3611028 (1971-10-01), Whitmore
patent: 3728016 (1973-04-01), Harbour et al.
patent: 3867026 (1975-02-01), Ogawa
Nagahara Yasumori
Suzuki Kohji
Hix L. T,.
Hutchison Kenneth C.
Ricoh Co. Ltd.
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