Image forming apparatus, cartridge, image formation system, and storage medium for cartridge
First Claim
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1. An image forming apparatus to which a process cartridge is detachably mountable, said process cartridge comprising an image bearing member, a charging member configured and positioned to electrically charge the image bearing member, and a memory medium having a memory area configured to store information relating to a charging current to be applied to the image bearing member by the charging member for a non-image-formation period in which no image is formed on the image bearing member and in which the image bearing member operates to perform an image formation operation, said apparatus comprising:
- a control unit configured to control a voltage to be applied to the charging member,wherein the control unit is configured to switch the voltage in accordance with the information relating to the charging current stored in the memory medium.
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Abstract
An image forming apparatus to which a process cartridge is detachably mountable,
- the process cartridge including an image bearing member,
- a charging member for electrically charging the image bearing member, and a memory medium having a memory area for storing information relating to a charging current for a non-image-formation period;
- the apparatus including a control unit for switching a voltage to be applied to the charging member in accordance with the information stored in the memory medium.
40 Citations
17 Claims
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1. An image forming apparatus to which a process cartridge is detachably mountable, said process cartridge comprising an image bearing member, a charging member configured and positioned to electrically charge the image bearing member, and a memory medium having a memory area configured to store information relating to a charging current to be applied to the image bearing member by the charging member for a non-image-formation period in which no image is formed on the image bearing member and in which the image bearing member operates to perform an image formation operation, said apparatus comprising:
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a control unit configured to control a voltage to be applied to the charging member, wherein the control unit is configured to switch the voltage in accordance with the information relating to the charging current stored in the memory medium. - View Dependent Claims (2, 3, 4, 5)
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6. A process cartridge detachably mountable to an image forming apparatus, said process cartridge comprising:
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an image bearing member; a charging member configured and positioned to electrically charge said image bearing member; a memory medium configured to store information relating to said process cartridge, said memory medium having a memory area configured to store information relating to a charging current to be applied to said image bearing member by said charging member for a non-image-formation period in which no image is formed on said image bearing member and in which said image bearing member operates to perform an image formation operation. - View Dependent Claims (7, 8, 9)
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- 10. A memory medium for a cartridge detachably mountable to an image forming apparatus, the cartridge including an image bearing member and a charging member configured to electrically charge the image bearing member, said memory medium comprising a memory area configured to store information relating to a charging current to be applied to the image bearing member by the charging member for a non-image-formation period in which no image is formed on the image bearing member and in which the image bearing member operates to perform an image formation operation.
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14. An image forming system for an image forming apparatus comprising a main assembly and a cartridge, wherein the image forming apparatus contains a part of process means for forming an image, wherein said system comprises:
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a memory medium provided in the cartridge, said memory medium including a memory area configured to store information relating to a charging current to be applied to an image bearing member of the cartridge for a non-image-formation period during which no image is formed on the image bearing member and in which the image bearing member operates to perform an image formation operation; and a control unit configured to switch a voltage to be supplied to a charging member that charges the image bearing member with the charging current in accordance with the information stored in said memory medium. - View Dependent Claims (15, 16, 17)
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Specification