Method of detecting life of image bearing member, image forming apparatus and cartridge
First Claim
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1. A method of detecting life of an image bearing member comprising:
- a contact time detecting step of detecting contact time when a developer carrying member that can have a contact or a clearance with an image bearing member contacts said image bearing member, said developer carrying member developing an electrostatic image formed in said image bearing member by a developer; and
a determining step of determining life of said image bearing member in accordance with a parameter calculated by using the contact time detected in said contact time detecting step.
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Abstract
A method of detecting life of an image bearing member has: a contact time detecting step of detecting contact time when a developer carrying member that can be in contact with or have a clearance with an image bearing member contacts the image bearing member, the developer carrying member developing an electrostatic image formed in the image bearing member by a developer; and a determining step of determining life of the image bearing member in accordance with a parameter calculated by using the contact time detected in the contact time detecting step.
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Citations
40 Claims
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1. A method of detecting life of an image bearing member comprising:
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a contact time detecting step of detecting contact time when a developer carrying member that can have a contact or a clearance with an image bearing member contacts said image bearing member, said developer carrying member developing an electrostatic image formed in said image bearing member by a developer; and
a determining step of determining life of said image bearing member in accordance with a parameter calculated by using the contact time detected in said contact time detecting step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An image forming apparatus comprising:
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an image bearing member;
a developer carrying member for developing an electrostatic image formed on said image bearing member by a developer, said developer carrying member capable of being in contact with and having a clearance with said image bearing member;
detection means for detecting contact time when said developer carrying member contacts said image bearing member; and
determining means for determining life of said image bearing member in accordance with a parameter calculated by using the contact time detected by said detection means. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A cartridge detachably attachable to a main body of an image forming apparatus, comprising:
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an image bearing member; and
storage means;
wherein,the main body of said image forming apparatus is a developer carrying member that develops an electrostatic image formed on said image bearing member by a developer, and comprises;
detection means for detecting contact time when said developer carrying member, which is capable of being in contact with and having a clearance with said image bearing member, contacts said image bearing member; and
comparison means for comparing a parameter calculated by using the product of the contact time detected by said detection means by a coefficient kd, and life information of said image bearing member, and wherein,said storage means stores at least one of the coefficient kd and the life information. - View Dependent Claims (29, 30, 31)
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32. A cartridge detachably attachable to a main body of an image forming apparatus, comprising:
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an image bearing member; and
storage means;
wherein,the main body of said image forming apparatus is a developer carrying member that develops an electrostatic image formed on said image bearing member by a developer, and comprises;
detection means for detecting contact time when said developer carrying member, which is capable of being in contact with and having a clearance with said image bearing member, contacts said image bearing member; and
comparison means for comparing a parameter calculated by rising the product of the contact time detected by said detection means by a coefficient kd, and life information of said image bearing member, and wherein,said storage means stores coefficient selection information, and as to the coefficient kd,) one of a plurality of coefficients set in advance is selected in accordance with the coefficient selection information. - View Dependent Claims (33, 34, 35)
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36. A cartridge detachably attachable to a main body of an image forming apparatus, comprising:
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an image bearing member; and
storage means;
wherein,the main body of said image forming apparatus is a developer carrying member that develops an electrostatic image formed on said image bearing member by a developer, and comprises;
detection means for detecting contact time when said developer carrying member, which is capable of being in contact with and having a clearance with said image bearing member, contacts said image bearing member; and
comparison means for comparing a parameter calculated by using the product of the contact time detected by said detection means by a coefficient kd, and life information of said image bearing member, and wherein,said storage means stores image bearing member life selection information, and as to the life information, one of a plurality of pieces of life information set in advance is selected in accordance with said image bearing member life selection information. - View Dependent Claims (37, 38)
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39. A cartridge detachably attachable to a main body of an image forming apparatus, comprising:
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an image bearing member; and
storage means;
wherein,the main body of said Image forming apparatus is a developer carrying member that develops an electrostatic image formed on said image bearing member by a developer, and comprises;
detection means for detecting contact time when said developer carrying member, which is capable of being in contact with and having a clearance with said image bearing member, contacts said image bearing member; and
comparison means for comparing a parameter calculated by using the contact time detected by said detection means and life information of said image bearing member, and wherein,said storage means stores the parameter. - View Dependent Claims (40)
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Specification