Image forming apparatus

Details Image forming apparatus Image forming apparatus

2005-08-23

2005-08-23

Chen, Sophia S. (Department: 2852)

Electrophotography

Image formation

Transfer

C399S101000, C399S308000

Reexamination Certificate

active

06934499

ABSTRACT:
An image forming apparatus includes a first image bearing member carrying a toner image, and a movable second image bearing member carrying a toner image. The toner image on the first image bearing member is transferred to the second image bearing member at a first transfer portion, and the toner image on the second image bearing member is transferred to a transfer material at a second transfer portion. The apparatus also includes a charging member contacting the second image bearing member arranged on a downstream side of the second transfer portion and on an upstream side of the first transfer portion in a moving direction of the second image bearing member, and a mark portion having a thickness and being formed on the second image bearing member. A contact region between the charging member and the second image bearing member does not overlap with the mark portion in a direction perpendicular to the moving direction of the second image bearing member.

REFERENCES:
patent: 5732310 (1998-03-01), Hiroshima et al.
patent: 6160978 (2000-12-01), Tsuruoka et al.
patent: 2002/0114633 (2002-08-01), Sawanaka et al.
patent: 11-161043 (1999-06-01), None
patent: 2002-258626 (2002-09-01), None

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