Patent ID: 8553277

Claim:
An image forming system comprising: an image forming apparatus that includes a transport control unit which transports a recording medium at a set transport speed, and that forms an image on the recording medium; and an image checking apparatus that includes a transport-speed acquisition unit that acquires transport-speed information concerning a transport speed from the image forming apparatus, the transport-speed information being used as control information of the image forming apparatus, a detector that detects a mark shown on the recording medium which is being transported, a reading unit that reads a checking-target image on the basis of the transport-speed information and information concerning a positional relationship between the mark and the checking-target image, the checking-target image being formed by the image forming apparatus at a position distant from the mark detected by the detector, and an operation-state notification unit that notifies the image forming apparatus of an operation state of the image checking apparatus, wherein, in a case where the image forming apparatus has received, from the operation-state notification unit, a notification indicating that the image checking apparatus is in a state of performing checking, the image forming apparatus prohibits the set transport speed from being changed, and wherein, in a case where the image forming apparatus has received, from the operation-state notification unit, a notification indicating that the image checking apparatus is in a state of having finished checking, the image forming apparatus cancels the prohibition of changing the set transport speed and stops transport of the recording medium.