| 摘要 |
An image-forming device comprises: a notification unit (404) to notify another device of an event generated in the image-forming device; a registration unit (402) to register a notification destination of the notification unit; a first determination unit (403) to determine, in a case where a request for registering a notification destination is received from a first information-processing device, validity duration of the registration based on the request; and a second determination unit (403) to determine, in a case where a request for registering a notification destination is received from a second information-processing device, validity duration of the registration based on the request, on the basis of the validity duration determined by the first determination unit.
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