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US 5,475,472 AGranted
Image process unit having charging member impedance correction feature
AssigneeCanon Kabushiki Kaisha
InventorsMasanobu Saito, Masaharu Ohkubo
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes an image bearing member; a charging member for charging the image bearing member; an image forming device for forming an image on the image bearing member; and an impedance circuit between the charging member and a voltage source for supplying electric power to the charging member, the impedance circuit having an impedance which is peculiar to individual image forming apparatus in accordance with an impedance of the charging member.
Claims23
A process unit, comprising:
- an image bearing member;
- a charging member contactable to said image bearing member for charging said image bearing member, said charging member having an inherent impedance which varies from one individual process unit to another;
- image forming means for forming an image on said image bearing member;
- and
- an impedance circuit between said charging member and a voltage source for supplying electric power to said charging member, said impedance circuit having an impedance which is determined as a function of the impedance of said charging member.
2 more elements
A process unit detachably mountable to an image forming apparatus, comprising:
- an image bearing member for bearing an image;
- a charging member contactable to said image bearing member for charging said image bearing member, said charging member having an inherent impedance which may vary from one individual process unit to another;
- and
- an impedance circuit connected between said charging member and a voltage source for supplying electric power to said charging member, said impedance circuit having an impedance which is determined as a function of the impedance of said charging member.
1 more element
Dependencies are inferred from the claim text.