Patent ID: 7547010
Filing Date: 2009-06-16
Classification: G03G

Abstract:
1. An image forming system comprising: an input unit for input of setting information including a quantity of special sheets per set and an insertion position of each special sheet for a copy, wherein a set of a plurality of different kinds of special sheets are disposed in a predetermined order; an image forming unit that forms an image on a recording sheet or on a special sheet, based on inputted image data; a conveying unit that feeds a recording sheet from a recording sheet feeding tray or a special sheet from a special sheet feeding tray, conveys the fed recording sheet or the special sheet along a conveying path, and ejects the fed recording sheet or special sheet to an ejection tray; a control unit which controls the image forming unit and the conveying unit to feed a recording sheet or a special sheet, based on setting information inputted from the input unit, to form an image at least on the fed recording sheet, and to eject the fed recording sheet or the special sheet; and a jam detecting unit which detects occurrence of a jam in the image forming system, wherein when occurrence of a jam is detected by the jam detecting unit, the control unit recognizes whether one or more special sheets which have been fed are present in the image forming system, and if it is recognized that one or more special sheets are present in the image forming system, the control unit controls the conveying unit, after the jam being released, to eject a special sheet or sheets as unnecessary up to one that is on the special sheet feeding tray and disposed preceding a special sheet that is of the same kind as a most front one that was present in the image forming system at the time of the occurrence of the jam.