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Image forming apparatus and the control method including a feature of detecting a remaining amount of a developer

  • US 6,931,216 B2
  • Filed: 06/12/2003
  • Issued: 08/16/2005
  • Est. Priority Date: 06/21/2002
  • Status: Active Grant
First Claim
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1. An image forming apparatus having a developer container containing a developer, a developer supply member for supplying the developer from the developer container to an image bearing member, and first and second detector members for detecting the amount of the developer, the image forming apparatus comprising:

  • a storage unit for storing information relating to the developer;

    a first detector for detecting a value corresponding to a capacitance between the first detector member and the developer supply member;

    a second detector for detecting a value corresponding to a capacitance between the second detector member and the developer supply member; and

    a processor for storing the values detected by the first and second detectors, respectively, wherein the processor avoids storing the detected values if the detected values are in a predetermined state.

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