Image-forming device having a drum drive gear for engaging a...

Details Image-forming device having a drum drive gear for engaging a... Image-forming device having a drum drive gear for engaging a...

2005-12-28

2008-08-19

Tran, Hoan H (Department: 2852)

Electrophotography

Image formation

Photoconductive member

Reexamination Certificate

active

07415228

ABSTRACT:
An image-forming device includes photosensitive drums, a drum gear, a drum gear rotating body, a drum drive gear, and a drum drive gear rotating body. The drum gear is provided on an axial end of each photosensitive drum. The drum gear rotating body is provided adjacent to the drum gear for rotating together with the drum gear. The drum drive gear is engaged with the drum gear and has the same number of gear teeth as the drum gear. The drum drive gear rotating body is provided adjacent to the drum drive gear at a position corresponding to the drum gear rotating body for rotating together with the drum drive gear. A protrusion is provided on a peripheral edge of the drum gear rotating body, and a depression is formed on a peripheral edge of the drum drive gear rotating body. The phase of the drum gear and the phase of the drum drive gear are aligned when the protrusion is fitted into the depression.

REFERENCES:
patent: 5930562 (1999-07-01), Noda et al.
patent: 6901229 (2005-05-01), Nishiuwatoko et al.
patent: 7010246 (2006-03-01), Fujishiro et al.
patent: 7254347 (2007-08-01), Matsumoto et al.
patent: 9-179372 (1997-07-01), None
patent: 11-30893 (1999-02-01), None
CN Office Action dtd Feb. 15, 2008, CN App 2005101381618.

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