Methods and systems relating to image forming apparatuses

Details Methods and systems relating to image forming apparatuses Methods and systems relating to image forming apparatuses

2011-06-28

2011-06-28

Gray, David M (Department: 2852)

Electrophotography

Diagnostics

Unit or part identification

C399S024000, C399S025000, C399S075000, C399S119000

Reexamination Certificate

active

07970293

ABSTRACT:
The invention describes an image forming apparatus having a cartridge configured to be removably attached to a main body. The cartridge has a rotational body positioned within the cartridge and an extension portion protruding outward from the rotational body in an axial direction. The device body has a main body, which has a driving member that rotates the rotational body and the extension portion, a detecting unit for detecting a movement of the extension portion, and a determining unit for determining a type of the developer cartridge using either a time elapsed between a time in which the driving member begins driving the rotational body and a time in which the detecting unit detects the movement of the extension portion, or a drive amount of the drive device occurring during an elapsed time.

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Japan Patent Office, Notice of Reasons for Rejection for Japanese Patent Application No. 2007-050725 (counterpart to above-captioned patent application), mailed Jul. 13, 2010.

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