Patent ID: 7986888

Claim:
An image processor including a main body and a consumable product which is replaceably installed to the main body, the consumable product comprising: a storage configured to store first identification information intrinsic to the consumable product and life information to be updated in accordance with usage of the consumable product, the main body comprising: a reader configured to read the information from the storage of the consumable product when the consumable product is attached to the main body; a main-body storage configured to store a table to which a record is to be successively added, the record including a first field on which the first identification information is to be recorded, a second field on which initial life information of the consumable product at the time of installation is to be recorded, and a third field on which current life information of the consumable product is to be recorded; a judging unit configured to judge whether the consumable product was used in a device other than the image processor after the consumable product was installed to the main body; an appending unit configured to create a new record containing the first identification information as read from the storage of the consumable product on the first field and the life information as read from the consumable product on the second and third fields, only when the judging unit judges that the consumable product was used in a device other than the image processor after the consumable product was installed to the main body, and configured to append the created record to the table; and a rewriting unit configured to rewrite the current life information of the latest record in the table and the life information stored in the storage of the consumable product in accordance with usage of the consumable product, only when the judging unit judges that the consumable product was not used in a device other than the image processor after the consumable product was installed to the main body.