Abstract: An image forming apparatus including an image forming unit, a fixing unit, a reading unit, a reference member, and a controller is described. The image forming unit forms an image and a detection image on a sheet. The detection image is used for detecting geometric characteristics of an image to be formed on a sheet by the image forming unit. The fixing unit fixes the image and the detection image formed by the image forming unit on the sheet. The reading unit reads the detection image on the sheet. The controller adjusts geometric characteristics of the image to be formed on a sheet based on a reading result of the detection image by the reading unit, and controls the reading unit to read the reference member and executes shading correction based on a reading result of the reference member.

Abstract: An image forming apparatus includes an image forming portion, a rotatable intermediary transfer belt, a plurality of stretching rollers, an outer roller, a moving mechanism, and a controller. In a case that a basis weight of a first recording material is a first basis weight and a basis weight of a second recording material is a second basis weight greater than the first basis weight, a position of the inner roller is a second position when the toner image is transferred onto the second recording material, and in a case that the basis weight of the first recording material and the basis weight of the second recording material are the second basis weight, the position of the inner roller is a first position when the toner image is transferred onto the second recording material.

Abstract: An image forming apparatus according to the present disclosure includes an image forming unit configured to form an image based on an image forming condition; a reading unit configured to read a test image on a sheet; a controller configured to: control the image forming unit to form the test image; obtain read data related to the test image output from the reading unit is formed; and update the image forming condition based on the read data. The controller operates in a first mode and a second mode, the first mode is a mode in which, the controller controls the image forming unit to form the image for the second sheet after the image forming condition is updated based on the reading data related to the test image.

Abstract: An image forming system includes a first feeding portion configured to feed a recording sheet, an image forming portion, a sheet conveyance path, a second feeding portion configured to feed an inserting sheet from any of a plurality of supporting portions including a first supporting portion and a second supporting portion, a detection portion, and a controller. The controller is configured to execute, during execution of a process of feeding a first inserting sheet from the first supporting portion to the sheet conveyance path, a movement processing of moving a second inserting sheet supported on the second supporting portion to a position where a trailing edge of the second inserting sheet is placed downstream in a sheet conveyance direction of a detection position of the detection portion and thereafter stopping the second inserting sheet.

Abstract: An image forming apparatus includes an image forming unit configured to perform a first image forming process and a second image forming process to form an image and a test image on a sheet; a reader, arranged in a conveyance path along which the sheet is conveyed, configured to read the test image on the sheet, the test image being formed by the image forming unit; a member; a controller configured to obtain, from the reader, reading data related to the test image on the sheet.

Abstract: An image forming apparatus is configured to execute a print job for printing on a sheet supplied from a sheet supplying mechanism formed of a first sheet feeding apparatus configured to temporarily stop conveyance of the sheet within a conveyance path thereof or a second sheet feeding apparatus configured not to temporarily stop conveyance of the sheet within a conveyance path thereof. The image forming apparatus includes an image former configured to form an image on the sheet; an obtaining device configured to obtain apparatus information representing a type of an apparatus forming the sheet supplying mechanism; and a controller configured to determine, based on the apparatus information and the sheet supplying mechanism instructed to feed the sheet by the print job, timings to send, to the sheet supplying mechanism, a feed request for starting to feed the sheet and a delivery request for instructing to deliver the sheet.

Abstract: An image forming apparatus includes an image forming portion, a rotatable intermediary transfer belt, a plurality of stretching rollers, an outer roller, a moving mechanism, and a controller. In a case that a basis weight of a first recording material is a first basis weight and a basis weight of a second recording material is a second basis weight greater than the first basis weight, a position of the inner roller is a second position when the toner image is transferred onto the second recording material, and in a case that the basis weight of the first recording material and the basis weight of the second recording material are the second basis weight, the position of the inner roller is a first position when the toner image is transferred onto the second recording material.

Abstract: An image forming apparatus includes an image forming unit configured to form an image and a detection image on a sheet, wherein the detection image is used for detecting a geometric characteristics of an image to be formed on a sheet by the image forming unit; a fixing unit configured to fix the image and the detection image formed by the image forming unit on the sheet; a reading unit configured to read the detection image on the sheet; a reference member; and a controller configured to: adjust geometric characteristics of an image to be formed on a sheet based on a reading result of the detection image by the reading unit; and control the reading unit to read the reference member to execute shading correction based on a reading result thereof.

Abstract: An image forming apparatus according to the present disclosure includes an image forming unit configured to form an image based on an image forming condition; a reading unit configured to read a test image on a sheet; a controller configured to: control the image forming unit to form the test image; obtain read data related to the test image output from the reading unit is formed; and update the image forming condition based on the read data. The controller operates in a first mode and a second mode, the first mode is a mode in which, the controller controls the image forming unit to form the image for the second sheet after the image forming condition is updated based on the reading data related to the test image.

Abstract: An image forming apparatus includes an image forming unit configured to perform a first image forming process and a second image forming process to form an image and a test image on a sheet; a reader, arranged in a conveyance path along which the sheet is conveyed, configured to read the test image on the sheet, the test image being formed by the image forming unit; a member; a controller configured to obtain, from the reader, reading data related to the test image on the sheet.

Abstract: An image forming apparatus includes an image forming portion, a rotatable intermediary transfer belt, a plurality of stretching rollers, an outer roller, a moving mechanism, and a controller. In a case that a basis weight of a first recording material is a first basis weight and a basis weight of a second recording material is a second basis weight greater than the first basis weight, a position of the inner roller is a second position when the toner image is transferred onto the second recording material, and in a case that the basis weight of the first recording material and the basis weight of the second recording material are the second basis weight, the position of the inner roller is a first position when the toner image is transferred onto the second recording material.

Abstract: An image forming apparatus includes an image forming portion, a rotatable intermediary transfer belt, a plurality of stretching rollers, an outer roller, a moving mechanism, and a controller. In a case that a basis weight of a first recording material is a first basis weight and a basis weight of a second recording material is a second basis weight larger than the first basis weight, a position of the inner roller is the second position when the toner image is transferred onto the second recording material, and in a case that the basis weight of the first recording material and the basis weight of the second recording material are the second basis weight, the position of the inner roller is the first position when the toner image is transferred onto the second recording material.

Abstract: An image forming system includes an image forming unit configured to form an image on a recording medium; a feeding unit on which the recording medium is placed and configured to convey the recording medium toward the image forming unit on a conveyance path; an insert unit on which an insert sheet is placed and configured to convey the insert sheet so as to insert the insert sheet between a plurality of recording mediums conveyed from the image forming unit; a storage unit configured to store information concerning feeding of the recording medium; and a control unit configured to control a feeding timing of the insert sheet by the insert unit based on the information stored in the storage unit.

Abstract: An image forming system includes a first feeding portion configured to feed a recording sheet, an image forming portion, a sheet conveyance path, a second feeding portion configured to feed an inserting sheet from any of a plurality of supporting portions including a first supporting portion and a second supporting portion, a detection portion, and a controller. The controller is configured to execute, during execution of a process of feeding a first inserting sheet from the first supporting portion to the sheet conveyance path, a movement processing of moving a second inserting sheet supported on the second supporting portion to a position where a trailing edge of the second inserting sheet is placed downstream in a sheet conveyance direction of a detection position of the detection portion and thereafter stopping the second inserting sheet.

Abstract: An image forming apparatus includes a controller configured to start feeding a sheet from a feeding unit without confirming a presence or absence of an insert sheet to be inserted before the sheet when an amount of insert sheets stacked on a stacking tray as a feed source is higher than a predetermined amount. In a case in which the amount of the insert sheets on the stacking tray is lower than the predetermined amount, the controller starts feeding a sheet from the feeding unit without confirming a presence or absence of the insert sheet when another stacking tray on which an amount of insert sheets is higher than the predetermined amount is present, and the controller starts feeding the sheet from the feeding unit after confirming the presence or absence of the insert sheet when the other stacking tray is absent.

Abstract: A post-processing apparatus connectable to an image forming apparatus which performs a post-processing on a sheet of a first type in a first post-processing mode, and performs the post-processing on a sheet of a second type having a light transmittance higher than the first type in a second post-processing mode, wherein, in a case where a job for performing the post-processing on a sheet of a third type is executed, the post-processing apparatus determines whether the sheet of the third type is detectable by the sheet detecting unit, operates in the first post-processing mode when the sheet of the third type is determined to be detectable by the sheet detecting unit, and operates in the second post-processing mode when the sheet of the third type is determined to be undetectable by the sheet detecting unit.

Abstract: An image forming apparatus to which a first feeding device which does not notify abnormal sheet feeding or a second feeding device which notifies the abnormal sheet feeding is connectable includes a sheet receiving portion, a sheet detector, an image forming unit, and a controller. In a case that the first feeding device is connected to the image forming apparatus, the controller discriminates that the abnormal sheet feeding occurs in the first feeding device when the detector does not detect the sheet at first timing. In a case that the second feeding device is connected to the image forming apparatus, the controller discriminates that the abnormal sheet feeding occurs at the sheet receiving portion when the detector does not detect the sheet at second timing and notification of the abnormal sheet feeding is not provided from the second feeding device.

Abstract: An image forming apparatus includes an image forming unit to form an image on a sheet, an intermediate processing tray where sheets conveyed through a first conveyance path are stacked as a sheet bundle, a sensor disposed at a second conveyance path to detect a conveyed sheet bundle, and a stacking tray in which sheets discharged through a discharging path diverging from the first conveyance path are stacked. In response to a sensor detected paper jam, a control unit determines the intermediate processing tray as the discharging destination for a sheet among the remaining sheets, and determines the stacking tray as the discharging destination for a sheet among the remaining sheets. After the paper jam is cleared, the control unit causes execution of bookbinding and cutting for a sheet bundle including the remaining sheets stacked in the intermediate processing tray.

Abstract: An image forming apparatus transmits a sheet feeding request to the sheet feeding device, obtains a sheet through a receiving device and performs image formation on the sheet. The receiving device comprises an inlet sensor for detecting a sheet fed from the sheet feeding device. The image forming apparatus transmits the sheet feeding request to the sheet feeding device again in a case where the inlet sensor does not detect a sheet within a predetermined time after the sheet feeding device starts to feed a sheet and no signal indicating an abnormality with regard to a sheet is received from the sheet feeding device. If the number of times the sheet feeding request is transmitted exceeds a predetermined number of times, the image forming apparatus stops operation.

Abstract: A post-processing apparatus connectable to an image forming apparatus which performs a post-processing on a sheet of a first type in a first post-processing mode, and performs the post-processing on a sheet of a second type having a light transmittance higher than the first type in a second post-processing mode, wherein, in a case where a job for performing the post-processing on a sheet of a third type is executed, the post-processing apparatus determines whether the sheet of the third type is detectable by the sheet detecting unit, operates in the first post-processing mode when the sheet of the third type is determined to be detectable by the sheet detecting unit, and operates in the second post-processing mode when the sheet of the third type is determined to be undetectable by the sheet detecting unit.