| 摘要 |
An image formation apparatus which comprises a photosensitive unit 15 having a photosensitive body 14 and a device for acting on the photosensitive body 14, the photosensitive unit 15 being disposed detachably in the main body of the apparatus, and a main body controller 36 for controlling the operation of components for performing the image formation operation using the photosensitive body 14, the main body controller 36 having a main memory 40 for storing predetermined items. A recyclable substance is used for the photosensitive body 14 and the photosensitive unit 15 is provided with an auxiliary memory 17. The serial number of the main body of the apparatus and the total number of print sheets of paper counted since the main body of the apparatus was a new product are stored in the main memory 40 and the auxiliary memory 17. The cumulative number of print sheets of paper the photosensitive body 14 has printed is further stored in the auxiliary memory 17.
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