Image forming apparatus, electronic storage device, cartridge, and method of controlling image forming apparatus

An electronic storage device provided in a cartridge that can detachably be attached to an image forming apparatus, comprising:

• a first area configured to store control information used for image formation by the image forming apparatus;
• a second area configured to store determination information used to determine correctness of the control information stored in the first area;
• and
• a third area configured to store identification information used to identify the cartridge,
• wherein, by the image forming apparatus,
• the determination information based on the identification information obtained from the third area is obtained from the second area,
• generated determination information is generated based on the obtained control information, and
• the correctness of the control information is determined based on comparison between the determination information based on the identification information and the generated determination information.

A cartridge that can detachably be attached to an image forming apparatus, comprising:

• an electronic storage device;
• and
• a storage unit configured to store a developing material,
• wherein the electronic storage device comprises:
• a first area configured to store control information used for image formation by the image forming apparatus;
• a second area configured to store determination information used to determine correctness of the control information stored in the first area;
• and
• a third area configured to store identification information used to identify the cartridge,
• wherein, by the image forming apparatus,
• the determination information based on the identification information obtained from the third area is obtained from the second area,
• generated determination information is generated based on the obtained control information, and
• the correctness of the control information is determined based on comparison between the determination information based on the identification information and the generated determination information.

A method of controlling an image forming apparatus to which a cartridge including an electronic storage device configured to store information can detachably be attached,

• wherein the electronic storage device includes:
• a first area configured to store control information used for image formation by the image forming apparatus;
• and
• a second area configured to store determination information used to determine correctness of the control information stored in the first area,
• a third area configured to store identification information used to identify the cartridge, and
• the method comprises:
• deriving first information using control information stored in the first area;
• obtaining, from the second area, the determination information based on the identification information stored in the third area;
• determining, based on comparison between the first information and the determination information stored in the second area, whether the control information stored in the first area is correct;
• and
• if it is determined in the determining that the control information is correct, correcting a control parameter used for image formation using the control information stored in the first area and controlling the image formation.

An image forming apparatus to which a cartridge including an electronic storage device can detachably be attached, comprising:

• at least one memory storing instructions;
• and
• at least one processor that, upon executing instructions stored in the at least one memory, functions to
• obtain identification information used to identify the cartridge and determination information corresponding to the identification information from the electronic storage device;
• and
• control image formation,
• wherein the electronic storage device stores first control information for a first image forming apparatus and second control information for a second image forming apparatus of a version different from the first image forming apparatus,
• the control information corresponding to said image forming apparatus is selectively selected from the first control information and the second control information in the electronic storage device,
• generated determination information is generated based on the selected control information,
• the correctness of the selected control information is determined based on comparison between the determination information based on the identification information and the generated determination information, and
• image formation is controlled using the selected control information based on a determination result of the correctness of the selected control information.