Image forming apparatus and cartridge detachably mountable thereto
AssigneeCanon Kabushiki Kaisha
InventorsKazushige Sakurai, Tomomi Kakeshita
Life of this patent
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Abstract
An image forming apparatus includes an image forming device for forming an image on a recording material, wherein at least a part of the image forming means is in the form of a unit which is detachably mountable to a main assembly of the apparatus, the apparatus includes a memory, wherein the memory is mounted to the unit, wherein the memory stores information relating to the timing at which a driving parameter of the image forming means is changed.
Claims8
A memory device to be mounted on a process cartridge usable with an image forming apparatus, the process cartridge including a photosensitive drum and a part of image forming means, said memory device comprising:
- a first memory portion configured to store information relating to an amount of use of said photosensitive drum;
- a second memory portion configured to store information for effecting a predetermined process on the information relating to the amount of use of the photosensitive drum;
- and
- a third memory portion configured to store threshold information for changing an operational condition of the image forming means in accordance with the information stored in said first memory portion and information stored in said second memory portion.
Dependencies are inferred from the claim text.