US Patent 7796909 Communication control device and image forming device

To prevent damages to a recording paper that is being transported and a jam of the recording paper within a device caused due to shift in the timings of communications through providing a communication control device that has a main body control unit 100 connected to each paper feeding control unit 200 via common communication lines, which transmits control instructions by using a unicast mode that individually transmits control data to each of the paper feeding control units 200 from the main body control unit 100 at different timings, and transmits executing instructions for the control instructions by using a broadcast mode that transmits control data simultaneously.