Abstract: An image forming apparatus includes an image former to form an image on a sheet based on an image forming condition for adjusting a position of the image on the sheet, a heater to fix the image on the sheet, and an image reader to read the image on the sheet, the image reader being arranged downstream from the heater in a conveyance direction in which the sheet is conveyed. A processor controls the image former to form an image including a mark on a sheet, controls the image reader to read the mark, generates the image forming condition based on a reading result of the mark by the image reader, and controls to determine, in a case where a second image including the mark is formed by the image former after the first image including the mark is formed by the image former, whether to form a chart including the mark on the sheet before the second image is formed based on an elapsed time after forming the first image.

Abstract: An image forming apparatus includes a printing apparatus and controls, when an interrupt print job to be processed by interrupting image formation based on a print job is requested, the printing apparatus to form an image corresponding to the interrupt print job by interrupting processing based on the print job. The printing apparatus is controlled to create a first predetermined number of charts for adjustment obtained by forming the image for adjustment on the sheet before the processing is returned to the print job after end of processing based on the interrupt print job, and adjust the image forming condition based on a result of reading the image for adjustment of the first predetermined number of charts for adjustment by the image sensor before the processing is returned to the print job.

Abstract: An image forming apparatus includes an image forming unit for forming an image on a sheet, a reading unit for reading the image on the sheet and an inspection unit for inspecting whether an image formation failure has occurred by comparing the image read by the reading unit with a reference image registered in advance. The image forming apparatus executes the inspection with the inspection unit in a first inspection mode or a second inspection mode. The first inspection mode is a mode in which the inspection unit executes the inspection on all sheets on which the image is formed by the image forming unit. The second inspection mode is a mode in which the inspection unit executes the inspection on some of the sheets on which the image is formed by the image forming unit, and the inspection unit does not execute the inspection on the other sheets.

Abstract: An image forming apparatus includes an image forming unit for forming an image on a sheet, a reading unit for reading the image on the sheet and an inspection unit for inspecting whether an image formation failure has occurred by comparing the image read by the reading unit with a reference image registered in advance. The image forming apparatus executes the inspection with the inspection unit in a first inspection mode or a second inspection mode. The first inspection mode is a mode in which the inspection unit executes the inspection on all sheets on which the image is formed by the image forming unit. The second inspection mode is a mode in which the inspection unit executes the inspection on some of the sheets on which the image is formed by the image forming unit, and the inspection unit does not execute the inspection on the other sheets.

Abstract: An image forming apparatus includes: an image forming unit configured to form an image on a sheet based on a job, wherein the image forming unit being controlled based on an image forming condition; a conveying unit configured to convey the sheet in a conveyance path; an image reading unit configured to read a test image on the sheet conveyed by the conveying unit; and a controller configured to: control the image forming unit to form the image and the test image on a same sheet; control the reading unit to read the test image on the same sheet; and generate the image forming condition based on a reading result of the test image by the reading unit.

Abstract: An image forming apparatus includes a printing apparatus configured to form an image on a sheet based on an image forming condition and an image reading unit configured to read an image for adjustment of the image forming condition, which is formed on the sheet by the printing apparatus. The image forming apparatus includes at least one processor configured to: control the printing apparatus to form an image based on a print job; and control, when an interrupt print job to be processed by interrupting image formation based on the print job is requested, the printing apparatus to form an image corresponding to the interrupt print job by interrupting processing based on the print job, wherein the at least one processor is configured to control the printing apparatus to create a chart for adjustment.

Abstract: An image forming apparatus can inhibit an occurrence of downtime or shorten the downtime even in a case in which a mode for performing image formation and a position of, for example, a primary transfer member does not match. The image forming apparatus includes photosensitive drums each configured to bear a toner image, primary transfer members, an intermediate transfer belt, an abutment/separation mechanism configured to move the primary transfer members, and a controller. The controller brings the primary transfer members into contact with the photosensitive drums in a full-color mode, separates the primary transfer members from the photosensitive drums in a monochrome mode, and sets the position of the primary transfer members to a predetermined position between that in the full-color mode and the monochrome mode in a standby mode.

Abstract: Provided is an image forming apparatus that inhibits an occurrence of downtime or shortens the downtime even in a case where a mode for performing image formation and a position of, for example, a primary transfer member does not match. The image forming apparatus includes photosensitive drums each configured to bear a toner image, primary transfer members, an intermediate transfer belt, an abutment/separation mechanism configured to move the primary transfer members, and a controller. The controller brings the primary transfer member into contact with the photosensitive drum in a full-color mode, separates the primary transfer member from the photosensitive drum in a monochrome mode, and sets the position of the primary transfer member to a predetermined position between the full-color mode and the monochrome mode in a standby mode.

Abstract: An image forming apparatus includes an image forming unit, an adjustment unit configured to select a type of adjustment processing and execute the selected type of adjustment processing for the image forming unit, and a determination unit to determine an adjustment time based on the selected type of adjustment processing. The determination unit determines, in a case where the adjustment unit causes the image forming unit to stop the image forming operation for executing the selected type of adjustment processing in a downtime, a first adjustment time, and wherein the determination unit determines, in a case where the image forming unit has finished the image forming operation, a second adjustment time longer than the first adjustment time.

Abstract: Disclosed is an image forming apparatus which includes: a feeding portion configured to feed a sheet; an image forming portion configured to form an image on the sheet; a conveying portion configured to stop the sheet fed by the feeding portion at a predetermined position and to convey the sheet to the image forming portion in accordance with a timing of forming the image by the image forming portion; a type discriminating portion configured to discriminate whether a type of the sheet to be fed belongs to a first sheet type group including plain paper or to a second sheet type group including coated paper; and a controlling portion configured to control feeding of the sheet, wherein the controlling portion is configured to change a sheet feeding start timing of the feeding portion in accordance with the type discriminated by the type discriminating portion.

Abstract: Provided is an image forming apparatus including a manual feed tray for placing a sheet subjected to image formation, a sheet sensor configured to detect whether or not the sheet is placed on this manual feed tray, a pickup roller configured to feed the sheet placed on the manual feed tray, and a controller. When a size of a sheet to be fed is designated by a user, and it is determined that the sheet is placed, the controller causes at least one of the pickup roller and the manual feed tray to start movement to a position of enabling the pickup roller to feed the placed sheet.

Abstract: An image forming apparatus including a normal power mode and a power saving mode includes a fixing unit configured to bring first and second rotary members into contact with each other to form a nip portion and fix a toner image onto a sheet with a pressing force of the nip portion. The image forming apparatus executes a rotation operation or a separation operation to separate the first and second rotary members from each other in order to prevent a deformation of the nip portion in the fixing unit. The image forming apparatus measures a time during which the first and second rotary members are in contact with each other without rotating. The image forming apparatus determines whether to execute the separation operation or the rotation operation based on a result of the power mode determination and the measured time.

Abstract: Provided is an image forming apparatus capable of reducing a downtime for switching between a monochrome image forming mode and a color image forming mode. In the image forming apparatus, images formed by a plurality of image forming stations are transferred in superimposition onto a transfer member. Further, the image forming apparatus controls image formation in each of a first mode of performing image formation using only an image forming station located at the most downstream position in a moving direction of the transfer member among the plurality of image forming stations, and a second mode of performing image formation using the plurality of image forming stations.

Abstract: An image forming apparatus performs a first preparation operation in a full color mode when power is supplied. The apparatus performs, when an image formation request is inputted after the first preparation operation completes, a second preparation operation in a designated color mode in accordance with the image formation request. When an image formation request is inputted during the first preparation operation, the apparatus skips the second preparation operation and performs image formation after the first preparation operation completes.

Abstract: An image forming apparatus includes an image forming unit, an adjustment unit to select a type of adjustment processing for the image forming unit, a determination unit to determine a required time of the selected type of adjustment processing, and a display unit counting down and displaying a remaining time of the selected type of adjustment processing. The display unit controls a resolution of the remaining time based on the selected type of adjustment processing. A first type of adjustment processing is executed again if the first type of adjustment processing fails, and a second type of adjustment processing is not executed again if the second type of adjustment processing fails. The resolution includes a first resolution corresponding to the first type of adjustment processing and a second resolution corresponding to the second type of adjustment processing and being finer than the first resolution.

Abstract: An image forming apparatus includes: an image forming unit configured to perform image formation in a first mode, in which image formation is performed by a plurality of image forming stations, or a second mode, in which image formation is performed by a predetermined image forming station among the plurality of image forming stations; and a controller configured to: control the image forming unit to perform a preparation operation in accordance with color mode information; set a restricted operation state in which the controller prohibits the image formation in the first mode and permits the image formation in the second mode when any one image forming station, except for the predetermined image forming station, is incapable of performing image formation; and prevent the image forming unit from performing the preparation operation when the first mode is set as the color mode information and the restricted operation state is set.

Abstract: A sheet feeding apparatus which is able to make it known that a first containing area for feeding cannot be replenished with sheets in a second containing area for replenishing. A sheet feeding cassette has the first containing area in which sheets to be fed are contained, the second containing area that is adjacent to the first containing area and in which sheets for replenishing are contained, and a sheet mover that transfers the sheets contained in the second containing area to the first containing area. A first detector detects whether or not the sheet mover is at a standby position. When the first detector detects that the sheet mover is not at the standby position, a warning is issued to prompt return of the sheet mover to the standby position.

Abstract: Provided is an image forming apparatus, including: a manual feed tray on which a recording material is stacked; a first detecting unit; a second detecting unit arranged on an upstream side of the first detecting unit; a third detecting unit arranged on an upstream side of the second detecting unit; a fourth detecting unit detecting a length of the recording material; a display portion; and a control portion determining a size of the recording material based on detection results and causing the display portion to display a first screen displaying the determined size, wherein the control portion causes the display portion to display a second screen for designating the size, when, among the first to third detecting units, a detecting unit located on a downstream side does not detect presence of the recording material and another detecting unit located on an upstream side of the detecting unit, detects the presence.

Abstract: An image forming apparatus includes a feeder including a tray and a pickup member, a size determiner, a sheet type setter, and a controller. The tray stacks a sheet thereon, and the pickup member feeds a contacted sheet. The feeder switches between a first state where the pickup member and the stacked sheet are in contact and a second state where the pickup member and the stacked sheet are separate. The size determiner determines a stacked sheet size. The sheet type setter sets a stacked sheet type. Where the type of the set sheet is a first type, the feeder switches from the second state to the first state when the size of the sheet is determined. Where the type of the set sheet is a second type, the feeder refrains from switching from the second state to the first state even when the size of the sheet is determined.

Abstract: Provided is an image forming apparatus, including: a manual feed tray on which a recording material is stacked; a first detecting unit; a second detecting unit arranged on an upstream side of the first detecting unit; a third detecting unit arranged on an upstream side of the second detecting unit; a fourth detecting unit detecting a length of the recording material; a display portion; and a control portion determining a size of the recording material based on detection results and causing the display portion to display a first screen displaying the determined size, wherein the control portion causes the display portion to display a second screen for designating the size, when, among the first to third detecting units, a detecting unit located on a downstream side does not detect presence of the recording material and another detecting unit located on an upstream side of the detecting unit, detects the presence.