Image forming apparatus, image forming system, and image forming method

摘要

an image forming apparatus including; a non-inversion conveyance unit that conveys a sheet to a downstream without inverting through the image forming unit; an inversion conveyance unit that inverts the sheet with printing on one side and that conveys the sheet to an upstream; a first sheet inversion unit that is arranged on the inversion conveyance unit and inverts the front and back of the sheet conveyed by the inversion conveyance unit; a control unit that controls the image forming unit and the conveyance unit, wherein the control unit includes a single-sided print mode and a double-sided print mode, and at a breakpoint of jobs, the control unit discharges the sheet so as to provide charge polarity that does not electrostatically attract a sheet discharged just before the breakpoint and a sheet discharged just after the breakpoint at least in the double-sided print mode.

主权项

1. An image forming apparatus comprising:
an image forming unit that prints an image on a sheet based on image data; a conveyance unit comprising: a non-inversion conveyance unit that conveys the sheet to a downstream in a discharge direction without inverting the front and back through the image forming unit; and an inversion conveyance unit that inverts the front and back of the sheet with printing on one side and that conveys the sheet to an upstream in a sheet conveyance direction of the image forming unit; a first sheet inversion unit that is arranged on the inversion conveyance unit and that inverts the front and back of the sheet conveyed by the inversion conveyance unit; a control unit that controls the image forming unit and the conveyance unit, wherein the control unit includes a single-sided print mode that can print an image on the front of the sheet through conveyance by the non-inversion conveyance unit and a double-sided print mode that can print images on the front and back of the sheet through the conveyance by the non-inversion conveyance unit and inversion conveyance by the inversion conveyance unit, and at a breakpoint of jobs, the control unit discharges the sheet so as to provide charge polarity that does not electrostatically attract a sheet discharged just before the breakpoint and a sheet discharged just after the breakpoint at least in the double-sided print mode; and a charge unit that charges the printed sheet, wherein the control unit discharges the sheet just before the breakpoint and the sheet just after the breakpoint based on selection of operation by the charge unit.