An image forming system includes a sheet conveyance unit, an image forming unit, a fixing unit and a controller. The sheet conveyance unit conveys continuous paper. The image forming unit forms an image on the continuous paper. The fixing unit fixes the image formed on the continuous paper. The controller controls an image forming operation performed by the sheet conveyance unit, the image forming unit and the fixing unit. In a case where a waste paper reduction mode is selected, the controller controls the sheet conveyance unit to stop conveying the continuous paper so that a bottom end of a last image on the continuous paper be at a second stop position on an upper-stream side of a first stop position after the bottom end of the last image passes the fixing unit when ending the image forming operation.

An image forming apparatus includes an image forming section, a transferred member, a transfer roller, and a separator. The image forming section forms a developer image. The transferred member is conveyed in a first direction and the developer image is to be transferred on the transferred member. The transfer roller faces the transferred member, and makes a transition between a biasing state in which the transferred member is biased by the transfer roller and a separated state in which the transfer roller is separated away from the transferred member. The separator starts to separate a medium away from the transferred member after the transfer roller starts making a transition from the biasing state to the separated state, the medium being held between the transferred member and the transfer roller in the biasing state.

An image forming apparatus including: an image former that forms an image on a recording material; includes a fixer that has a first fixing member having an elastic layer, a second fixing member that forms a fixing nip with the first fixing member, and an external heater that heats the first fixing member from outside, and fixes the image on the recording material by heating and pressing the conveyed recording material at the fixing nip; and a hardware processor that executes a thermal expansion mode, in which in the thermal expansion mode, the hardware processor causes the external heater to heat the first fixing member to a temperature higher than a temperature during normal printing.

An image forming apparatus includes a photosensitive member that includes a photosensitive layer, the photosensitive layer being thicker at a first axial end of the photosensitive member than at a second axial end of the photosensitive member; and a forming unit that forms a first image and a second image on the photosensitive member, the first image being transferred to each of transfer areas defined on continuous-form paper, the second image being transferred to the first axial end but to neither a position between adjacent ones of the transfer areas that are side by side in a longitudinal direction of the continuous-form paper nor a position in any of the transfer areas.

A heating device includes a heating member body having a surface that is configured to contact a continuous medium; plural heat sources that are arranged in a width direction of the continuous medium and that are configured to increase a temperature of the heating member body; an electric power circuit that is configured to supply electric power to the heat sources in accordance with a width of the continuous medium; a heat transfer member that is disposed so as to face the heat sources and that extends in the width direction of the continuous medium; and an overheat prevention device that is disposed in contact with the heat transfer member and that is configured to stop supply of electric power from the electric power circuit if a temperature of the heat transfer member exceeds a predetermined temperature.

A heating device includes a heating member body having a surface that is configured to contact a continuous medium; plural heat sources that are arranged in a width direction of the continuous medium and that are configured to increase a temperature of the heating member body; an electric power circuit that is configured to supply electric power to the heat sources in accordance with a width of the continuous medium; a heat transfer member that is disposed so as to face the heat sources and that extends in the width direction of the continuous medium; and an overheat prevention device that is disposed in contact with the heat transfer member and that is configured to stop supply of electric power from the electric power circuit if a temperature of the heat transfer member exceeds a predetermined temperature.

The image forming system includes an unjamming execution section configured to execute unjamming for eliminating a sheet jam when the sheet jam is caused in the image forming system; and a control section configured to control the unjamming execution section to execute the unjamming in accordance with a position of the sheet jam or a portion of the long sheet causing the sheet jam, or both in the image forming system.

An image forming apparatus includes a photosensitive member that includes a photosensitive layer, the photosensitive layer being thicker at a first axial end of the photosensitive member than at a second axial end of the photosensitive member; and a forming unit that forms a first image and a second image on the photosensitive member, the first image being transferred to each of transfer areas defined on continuous-form paper, the second image being transferred to the first axial end but to neither a position between adjacent ones of the transfer areas that are side by side in a longitudinal direction of the continuous-form paper nor a position in any of the transfer areas.

An image formation apparatus includes a conveyor configured to convey a moving element on which an image is formed, a generator configured to generate a first image and a second image by shooting the conveyed moving element at different timing, a detector configured to sense a first distance between the generator and the moving element at the time of shooting of the first image and sense a second distance between the generator and the moving element at the time of shooting of the second image, and a hardware processor configured to calculate a speed of conveyance of the moving element based on the first image, the second image, the first distance, and the second distance, and output the speed of conveyance.

A paper conveyance roller pair on the lower flow side of an auto cutter which cuts a target recording medium (long paper) at predetermined timing during a printing operation includes a powder brake mechanism which brakes the paper conveyance roller pair by changing the degree of agglomeration of magnetic powder with a magnetic force generated by a coil based on an excitation current value so as to continuously vary a transmission torque. When the target recording medium is cut, a control section varies an excitation current of the power brake mechanism to increase a load torque to be applied to the paper conveyance roller pair, and applies tension larger than usual to the target recording medium pinched by the paper conveyance roller pair.