An image forming system includes an image forming unit, a pressure-bonding processing unit, a display portion, and a control unit capable of controlling the image forming unit by acquiring image data for forming a toner image on a recording medium in an operation in an image forming mode. The control portion controls the display portion to issue a warning in a case that the toner image to be formed on an inner surface of the recording medium to be folded protrudes outside a film region, the film region being a region of the inner surface to which a thermosensitive adhesive film is to be supplied.

A continuous sheet transport device transports a continuous sheet along a sheet transport path passing through a transfer position at which a toner image is transferred. The device includes a first transport unit that is provided on an upstream side of the transfer position on the sheet transport path and transports the continuous sheet, a sheet feeding unit that is provided on an upstream side of the first transport unit on the sheet transport path and that feeds the continuous sheet, a leasing end of which is placed on the sheet feeding unit, toward a downstream side on the sheet transport path, and an operation controller that controls the first transport unit to temporarily operate in a reverse transport direction so that the continuous sheet is transported to the upstream side at a timing before the leading end of the continuous sheet reaches the first transport unit.

An image forming system includes an image forming unit, a pressure-bonding processing unit, a display portion, and a control unit capable of controlling the image forming unit by acquiring image data for forming a toner image on a recording medium in an operation in an image forming mode. The control portion controls the display portion to issue a warning in a case that the toner image to be formed on an inner surface of the recording medium to be folded protrudes outside a film region, the film region being a region of the inner surface to which a thermosensitive adhesive film is to be supplied.

An image forming apparatus of the present invention includes: an image forming unit for forming an image on a continuous paper; a fixing unit for fixing by heat the image which has been formed on the continuous paper by the image forming unit; conveyance units for conveying the continuous paper; and a control unit for controlling the conveyance units to convey the continuous paper in such a manner that, when an image forming operation by the image forming unit is stopped, the same portion of the continuous paper, on which the image is not formed, does not remain in the fixing unit for a predetermined period of time.