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US 2009/0268248 A1Published application
Control apparatus of non-volatile memory and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorHitoshi Furukawa
Life of this patent
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Abstract
An apparatus has an external memory control apparatus for controlling rewriting of a memory. The external memory control apparatus allows the memory to store the number of formed monochromatic images and changes a rewriting frequency of the memory according to the number of formed monochromatic images.
Claims10
A control apparatus of a non-volatile memory, comprising:
- a control unit which controls a rewriting operation of data into the non-volatile memory,
- wherein the control unit stores information for presuming the number of rewriting times of the data to the non-volatile memory into the non-volatile memory and changes a rewriting frequency of the non-volatile memory according to the information for presuming the number of rewriting times.
An image forming apparatus comprising:
- a plurality of image forming units each having a non-volatile memory and configured to execute an image formation;
- and
- a control unit configured to control a rewriting operation of each of the non-volatile memories,
- in which when the image formation is executed by using a specific image forming unit among the plurality of image forming units, information regarding the image formation that is executed by using the specific image forming unit is stored into the non-volatile memories held in the other image forming units which are not used for the image formation,
- wherein the control unit changes rewriting frequencies of the non-volatile memories in the other image forming units according to the information stored in the non-volatile memories in the other image forming units.
2 more elements
An image forming apparatus in which a plurality of cartridges each having a non-volatile memory are detachable, comprising:
- a first image forming mode for executing an image formation by using a specific cartridge among the plurality of cartridges;
- and
- a second image forming mode for executing an image formation by using other cartridges different from the cartridge used in the first image forming mode,
- wherein when the image formation is executed in the first image forming mode, information regarding a using state of the specific cartridge is stored into the non-volatile memories in the other cartridges, and when the image formation is executed in the second image forming mode, information regarding using states of the other cartridges is stored into the non-volatile memories in the other cartridges, and
- rewriting frequencies of the non-volatile memories in the other cartridges are changed according to the information regarding the using state of the specific cartridge stored in the non-volatile memory.
2 more elements
Dependencies are inferred from the claim text.