Patent ID: 8130398

Claim:
An image forming system, comprising: a host device; and an image forming apparatus connected to the host device via a network, the host device including: a host device side communicating unit that communicates with the image forming apparatus via the network; a storing unit that saves a job; and a host device side controlling unit that transmits a power-off notification that notifies the image forming apparatus on the network via the host device side communicating unit that the power is to be turned off, transmits job information identifying the job when performing an end process, saves the job transmitted from the image forming apparatus that has received the power- off notification in the storing unit, and turns off the power, and the image forming apparatus including: a job saving unit that saves the job; an image forming apparatus side communicating unit that communicates with the host device via the network; and an image forming apparatus side controlling unit that determines whether the job identified by the job information upon receiving the power-off notification from the host device via the image forming apparatus side communicating unit, reads the job identified by the job information out from the job saving unit, causes the image forming apparatus side communicating unit to transmit the job to the host device, and deletes the job transmitted to the host device, from the job saving unit, wherein: the host device side controlling unit causes the host device side communicating unit to transmit a job saving completion notification that notifies the image forming apparatus that saving of the job has been completed after saving the job identified by the job information and transmitted from the image forming apparatus that has received the power-off notification in the storing unit; the image forming apparatus side controlling unit deletes the job transmitted to the host device from the job saving unit after receiving the job saving completion notification from the host device, and causes the image forming apparatus side communicating unit to transmit a job deletion completion notification that notifies the host device that deletion of the job has been completed; and the host device side controlling unit turns off the power after receiving the job deletion completion notification from the image forming apparatus.