Image forming apparatus

摘要

An image forming apparatus adapted to form an image on a sheet by an image forming portion, and thereafter detect the presence or absence of any abnormality of the sheet on which the image has been formed has an abnormality detecting device (501) for detecting the abnormality of the sheet, an abnormal sheet containing portion (505) for containing therein the sheet of which the abnormality has been detected by the abnormality detecting device, a normal sheet containing portion (502) for temporarily containing therein a normal sheet of which the abnormality has not been detected by the abnormality detecting device, and a controlling portion for controlling the image forming portion so that the abnormal sheet of which the abnormality has been detected by the abnormality detecting device may be contained in the abnormal sheet containing portion, and that an image formed on the abnormal sheet may be formed on a predetermined subsequent sheet subsequent to the abnormal sheet. The controlling portion controls so that the normal sheet between the abnormal sheet and the predetermined subsequent sheet may be contained in the normal sheet containing portion after the abnormal sheet is contained in the abnormal sheet containing portion, and the normal sheet contained in the normal sheet containing portion may be delivered after the predetermined subsequent sheet has been delivered.