Patent ID: 8610765

Claim:
A head separated type imaging apparatus comprising: a plurality of head units; and a main unit separate from the plurality of head units, the main unit processing an image signal transmitted from a head unit of the plurality of head units, wherein each of the plurality of head units stores a unique identifier and correction data of the image signal; wherein the main unit comprises: a first communication unit receiving the correction data from the plurality of head units via wireless communication; a second communication unit receiving the correction data from the plurality of head units via wired communication; and a control unit detecting whether the first communication unit and the second communication unit are communicable, obtaining the identifier and the correction data by the second communication unit in priority when the first communication unit and the second communication unit are communicable, obtaining the identifier again when switching the first communication unit and the second communication unit, and when the identifier received just before the communication switching is the same as the identifier received just after the communication switching, continuing reception of the rest of the correction data from the point of communication switching; wherein the control unit determines the communication switching point of the correction data transfer from a value of a counter that is counting a number of the correction data transferred by the first communication unit or the second communication unit, and instructs the head unit to transfer the rest of the correction data, and wherein the first communication unit is communicable with the plurality of head units when reception of the correction data is performed by the second communication unit.