| 摘要 |
An image formation apparatus has a controller which performs monitoring and control over a directly connected option apparatus by communicating with a controller of the directly connected option apparatus. Monitoring and control over another option apparatus that itself has a controller is performed not by the controller of the image formation apparatus but by the controller of the option apparatus close to the image formation apparatus. The image formation apparatus can keep track of the situation of a far-off option apparatus without performing direct monitoring or control thereof, by the controller of the option apparatus sending to the controller of the image formation apparatus a notice indicating the situation of the option apparatus sent from the controller of yet another option apparatus.
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