摘要 |
In an image forming system having an image forming apparatus main body for forming an image on a sheet and a sheet processing apparatus having a processing portion for processing sheets received from the image forming apparatus main body, sheets are conveyed to the sheet processing apparatus during an operation before starting of an image forming operation of the image forming apparatus main body or interruption of the image forming operation, and the sheet processing apparatus performs a calibrating operation on respective processing portions using the sheets received from the image forming apparatus main body.
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