Image forming apparatus and cartridge mountable on the same

Details Image forming apparatus and cartridge mountable on the same Image forming apparatus and cartridge mountable on the same

1996-12-31

1999-08-31

Moses, R. L.

Electrophotography

Diagnostics

Consumable

399119, G03G 1508

Patent

active

059465220

ABSTRACT:
This specification discloses an image forming apparatus having an image bearing member, developing means for causing a developer to adhere to the image bearing member to thereby develop a latent image, the developing means having a developer carrying member carrying the developer thereon, residual amount detecting means for detecting the amount of developer residual in the developing means, the residual amount detecting means measuring the electrostatic capacity between an electrode disposed near the developer carrying member and the developer carrying member, comparing means for comparing the electrostatic capacity measured by the residual amount detecting means with a reference value, and judging whether the amount of residual developer is greater or smaller than a predetermined value, memory means for memorizing information for correcting the reference value, and correcting means for correcting the reference value in conformity with the correcting information.

REFERENCES:
patent: 5229821 (1993-07-01), Fujii
patent: 5500714 (1996-03-01), Yashiro et al.

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