| 摘要 |
In an image forming system including an intermediate conveyance apparatus capable of superimposing plural sheets conveyed from an image forming apparatus, and of conveying the superimposed sheets to a sheet finisher as a set, a controller causes a conveyance interval for sheets in the image forming apparatus to be the first conveyance interval, then, superimposes plural sheets in the intermediate conveyance apparatus, and conveys superimposed sheets to the sheet finisher as a set, when characteristic information of sheets to be conveyed continuously agrees with a prescribed condition. The controller causes a conveyance interval for sheets to be the second conveyance interval greater than the first conveyance interval, and conveys sheets from the intermediate conveyance apparatus to the sheet finisher, without superimposing sheets in the intermediate conveyance apparatus, when the characteristic information of sheets to be conveyed continuously does not agree with the prescribed condition.
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