Image forming apparatus that determines whether a cartridge must be authenticated, control method thereof, storage medium, and cartridge
AssigneeCanon Kabushiki Kaisha
InventorHidemi Sasaki
Life of this patent
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Abstract
This image forming apparatus determines, in accordance with state information indicating the state of the image forming apparatus, whether or not a timing for executing an authentication process of a removable cartridge has arrived. Furthermore, if the timing for executing a cartridge authentication process has arrived, this image forming apparatus obtains authentication information regarding authentication from the cartridge, and determines, from the authentication information, whether or not an authentication process is required to be executed. When an authentication process has been executed, an authentication result is written in a storage area of the cartridge.
Claims21
An image forming apparatus for forming an image on a sheet using recording material in a storage cartridge which is attachable to and detachable from the image forming apparatus, the apparatus comprising:
- one or more controllers configured to function as:
- a unit configured to execute an authentication process for determining whether or not correct signature information is stored in a storage medium attached to the storage cartridge;
- a unit configured to, based on a determination result indicating that the correct signature information is stored in the storage medium, (i) write, as a latest authenticator ID, identification information of the image forming apparatus to the storage medium, (ii) write, as latest authentication timing information, timing information of the authentication process to the storage medium, and (iii) permit execution of an information forming process,
- wherein the latest authentication timing information stored in the storage medium is updated in accordance with execution of a further authentication process.
Dependencies are inferred from the claim text.