Abstract: A remaining paper determination apparatus that determines existence/non-existence of remaining paper in a paper conveyance path that conveys paper, includes: a capacitance sensor that detects capacitance of the paper conveyance path; and a remaining paper determination part that determines existence/non-existence of remaining paper on the basis of a detection value of the capacitance sensor, wherein the remaining paper determination part includes a base level setting part that sets a base level on the basis of an output value of the capacitance sensor of when there is no paper in the paper conveyance path, and a threshold setting part that sets a determination threshold by adding a predetermined default value to the base level, and compares the detection value of the capacitance sensor with a latest determination threshold and performs determination according to a magnitude relationship therebetween.

Abstract: An image forming apparatus includes: an operating unit configured to display an operation screen, and accept a user operation; a conveying unit configured to convey a sheet along a path to one of a plurality of discharge destinations; an image forming unit configured to form an image on the sheet moving in the path; and a control unit configured to identify a conveyance destination, and cause the conveying unit to convey the sheet to the conveyance destination, wherein, when a jam in the path is detected, the control unit causes the conveying unit to suspend sheet conveyance, and causes the operating unit to display a select screen for selecting a purge destination and accept a purge destination selected by a user, and the control unit identifies a sheet to be moved to the purge destination, and causes the conveying unit to convey the sheet to the purge destination.

Abstract: An image forming apparatus includes: an operating unit configured to display an operation screen, and accept a user operation; a conveying unit configured to convey a sheet along a path to one of a plurality of discharge destinations; an image forming unit configured to form an image on the sheet moving in the path; and a control unit configured to identify a conveyance destination, and cause the conveying unit to convey the sheet to the conveyance destination, wherein, when a jam in the path is detected, the control unit causes the conveying unit to suspend sheet conveyance, and causes the operating unit to display a select screen for selecting a purge destination and accept a purge destination selected by a user, and the control unit identifies a sheet to be moved to the purge destination, and causes the conveying unit to convey the sheet to the purge destination.

Abstract: An image forming apparatus has an image forming section configured to form an image on a recording sheet, a controller to execute a job, and an adjustment section configured to adjust a density of the image formed on the recording sheet by the image forming section during execution of the job. The controller discharges an inserting sheet onto the recording sheet having the image formed during the execution of the job when a value of the adjustment is larger than a predetermined value.

Abstract: An image forming system including a control section provides control in such a way that, the ring binder of the size determined for the first set of copies is adopted so that ring binding is performed for a second set of copies or copies thereafter in a case of executing a job for ring binding of a plurality of copies. When at least one of a status change in the sheet feed section, a main power source being turned off, or a change in a job ticket is occurred from a suspension to a resumption of the job, since the thickness of a bundle of sheets may change, the thickness measuring section is caused to measure the thickness of the bundle in a first set of copies subsequent to resumption. And the control section judges continuation or suspension of a job.

Abstract: An image forming apparatus has an image forming section configured to form an image on a recording sheet, a controller to execute a job, and an adjustment section configured to adjust a density of the image formed on the recording sheet by the image forming section during execution of the job. The controller discharges an inserting sheet onto the recording sheet having the image formed during the execution of the job when a value of the adjustment is larger than a predetermined value.

Abstract: An image forming system including a control section provides control in such a way that, the ring binder of the size determined for the first set of copies is adopted so that ring binding is performed for a second set of copies or copies thereafter in a case of executing a job for ring binding of a plurality of copies. When at least one of a status change in the sheet feed section, a main power source being turned off, or a change in a job ticket is occurred from a suspension to a resumption of the job, since the thickness of a bundle of sheets may change, the thickness measuring section is caused to measure the thickness of the bundle in a first set of copies subsequent to resumption. And the control section judges continuation or suspension of a job.