Electrophotography – Image formation – Photoconductive member
Patent
1998-02-18
1999-12-28
Grimley, Arthur T.
Electrophotography
Image formation
Photoconductive member
G03G 1500
Patent
active
060092912
ABSTRACT:
A toner cartridge (1) contains a photoconductive drum (49) having a central shaft (47). Gear (145) turns with the drum and has a stud (602). A coil spring (604) is mounted on the stud to form a spring clutch which is unwound by the rotation of the drum during imaging. Alternatively, a flat frictional surface is pressed against the side wall (600b) of the gear. Both contact areas have a light grease. The drag forces provide accurate, smooth operation during imaging.
REFERENCES:
patent: 3727732 (1973-04-01), Barr
patent: 4256208 (1981-03-01), Najer et al.
patent: 4257510 (1981-03-01), Fisher
patent: 5303004 (1994-04-01), Maruyama et al.
JPO 410089377A Kitahara, Makato `Driving Transmission Device and Image Forming Device` Sep. 19, 1996.
JPO 40432105A Sato, Hisao et al `Imaging Forming Device` Apr. 22, 1991.
The Spring Clutch, Journal of Applied Mechanics, Sep. 1939, pp. A-103 to A-108.
Curry Steven Alan
Horrall Paul Douglas
Merrifield David Lee
Mlejnek Daniel George
Molloy James John
Brady John A.
Grimley Arthur T.
Lexmark International Inc.
Wendal, Jr. George E.
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