Process cartridge and image forming apparatus on which the process cartridge is mountable
AssigneeCanon Kabushiki Kaisha
InventorsMasaki Ojima, Takashi Kawana
Life of this patent
Estimating the term…
Abstract
A process cartridge removably mountable on a body of an image forming apparatus, includes an electrophotographic photosensitive member, a process device acting on the electrophotographic photosensitive member, and a memory storing therein information regarding the process cartridge. It is characterized in that the memory itself stores therein the frequency of writing of information into the memory.
Claims11
An image forming apparatus, comprising:
- an image forming device configured to form an image on a recording medium;
- a memory, connected to said image forming device, wherein said memory stores information relating to an amount of use of said image forming device;
- and
- a writing device, connected to said memory, said writing device writing the information into said memory;
- wherein, when said image forming device performs an image formation operation on a sheet of the recording medium, said writing device writes the information into said memory when the image formation operation is finished,
- wherein when said image forming device performs image formation operations on plural sheets of the recording medium continuously, said writing device writes the information into said memory when the image formation operations of the plural sheets of the recording medium are finished, and
- wherein said memory further stores therein a frequency of writing operations for writing information into said memory.
A cartridge removably mountable on a main body of an image forming apparatus, comprising:
- at least one component of an image forming device configured and positioned to form an image on a recording medium in a printing operation;
- and
- a memory, connected to said image forming device, wherein said memory stores information relating to an amount of use of said image forming device;
- wherein said memory further stores therein a frequency of writing operations for writing information into said memory,
- wherein the frequency of writing operations for writing information is a value that is different from the number of printing operations.
A cartridge removably mountable on a main body of an image forming apparatus, comprising:
- at least one component of an image forming device configured and positioned to form an image on a recording medium;
- and
- a memory, connected to said image forming device, said memory storing information relating to an amount of use of said image forming device,
- wherein said memory further stores therein a frequency of writing operations for writing information into said memory and information which can limit the frequency of writing operations for writing information.
A cartridge removably mountable on a main body of an image forming apparatus, comprising:
- at least one component of an image forming device configured and positioned to form an image on a recording medium;
- and
- a memory for storing information relating to an amount of use of said image forming device,
- wherein said memory further stores therein a frequency of writing operations for writing information into said memory and information indicating whether recycling is possible or not.
Dependencies are inferred from the claim text.