| 摘要 |
An image forming apparatus includes a sheet feeder attaching unit, a communication unit, a connection determining unit, an acquiring unit, a storage unit, a compatibility determining unit and a forcible unconnected control unit. The connection determining unit causes the communication unit to communicate with a communication section of a sheet feeder, and determines whether the sheet feeder is connected based on a communication result. The acquiring unit acquires attribute information of the sheet feeder. The storage unit stores attribute information of sheet feeders being compatible, in terms of control, with the image forming apparatus. The compatibility determining unit determines whether the connected sheet feeder is compatible by comparing the acquired attribute information of the connected sheet feeder with the stored attribute information. The forcible unconnected control unit establishes a forcible unconnected state between the connected sheet feeder and the image forming apparatus if the compatibility determining unit determines not-compatible. |
| 主权项 |
1. An image forming apparatus comprising:
a sheet feeder attaching unit; a communication unit; a storage unit that stores information relating to sheet feeders configured to be attached to the sheet feeder attaching unit; and a processor configured to implement:
a connection determining unit, wherein when the image forming apparatus is powered on, the connection determining unit causes the communication unit to make a connection confirmation request through the sheet feeder attaching unit, the connection determining unit determines a connection state between a processor of a sheet feeder and the processor of the image forming apparatus, based on whether a response signal to the connection confirmation request is received from the processor of the sheet feeder, and when receiving no response signal, the connection determining unit determines that connection is not established between the sheet feeder and the sheet feeder attaching unit, when receiving the response signal, the connection determining unit determines that connection is established between the sheet feeder and the sheet feeder attaching unit, and the connection determining unit stores a result of the determination in the storage unit;a compatibility determining unit, wherein when the connection determining unit determines that the connection is established, the compatibility determining unit determines whether the connected sheet feeder is compatible with the image forming apparatus based on program version information of the sheet feeder, and when determining that the connected sheet feeder connected to the sheet feeder attaching unit is not compatible with the image forming apparatus, the compatibility determining unit stores information indicating incompatibility in the storage unit; anda connection controller, wherein when the storage unit stores the information indicating incompatibility between the connected sheet feeder and the image forming apparatus, the connection controller forcibly controls the connection state between the connected sheet feeder and the image forming apparatus to be disconnected. |
