Patent ID: 7711448
Filing Date: 2010-05-04
Classification: G03G

Abstract:
1. An image forming system in which an inserter device and a post-processing device are attached to an image forming apparatus, wherein: a control command communicated between the image forming apparatus and the post-processing device is relayed by the inserter device and does not include timing information for the inserter device; the inserter device is provided between the image forming apparatus and the post-processing device so as to perform sheet relay transport between the image forming apparatus and the post-processing device and the inserter device is provided separately from the image forming apparatus and the post-processing device, and the inserter device is capable of being optionally attached between the image forming apparatus and the post processing device (as an optional device); the inserter device judges content of the control command upon receiving the control command issued by the image forming apparatus; and when the control command does not relate to the operation of the inserter device, the inserter device immediately forwards the control command to the post-processing device, and when the control command entails sheet relay transport by the inserter device, the inserter device retains the control command and then forwards to the post-processing device the control command in accordance with timing at which the inserter device outputs a sheet to the post-processing device.