Photoconductor drum and drive shaft gear portions of an...

Details Photoconductor drum and drive shaft gear portions of an... Photoconductor drum and drive shaft gear portions of an...

2005-11-22

2005-11-22

Brase, Sandra L. (Department: 2852)

Electrophotography

Image formation

Photoconductive member

Reexamination Certificate

active

06968144

ABSTRACT:
An image forming apparatus includes a photoconductor drum in which a first gear portion is formed on the axis of rotation and on which an electrostatic latent image corresponding to a toner image is formed by a rotation in a circumferential direction; a developing roller which is set correspondingly to the photoconductor drum, and makes visible the electrostatic latent image formed on the photoconductor drum thereby to form a toner image; and a photoconductor drive shaft having a second gear portion engaging with the first gear portion and formed on an axis of rotation, which gears with the photoconductor drum on the same axis and rotation-drives this photoconductor drum. Further, in at least either of the first gear portion and the second gear portion, an axial length of a part of gear teeth constituting the gear portion is different from axial lengths of other teeth.

REFERENCES:
patent: 3249377 (1966-05-01), Weasler
patent: 4993992 (1991-02-01), Kriegel
patent: 6193629 (2001-02-01), Tenzor et al.
patent: 6285847 (2001-09-01), Tanizaki et al.
patent: 6671475 (2003-12-01), Katada et al.
patent: 2002/0085858 (2002-07-01), Yamaguchi et al.
patent: 2 141 520 (1984-12-01), None
patent: 2000-352898 (2000-12-01), None
Patent Abstracts of Japan, Tajima Kazuhiko, “Image Forming Device”, Publication No.: 2000352898, Publication Date: Dec. 19, 2000, 1 page.

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