Canon Kabushiki Kaisha

Takashi Yokoya

Toshiyuki Miyake

Yutaka Ando

Naoto Watanabe

Mitsuhiko Sato

Shunsuke Nishimura

Takayuki Fujii

Akinobu Nishikata

Manabu Yamauchi

Yushi Oka

Koji Yumoto

Akihiro Arai

Satoru Yamamoto

Hiromasa Maenishi

Akihiro Kawakita

Riki Fukuhara

Hidenori Matsumoto

Hidenori Sunada

Ichiro Sasaki

Katsuya Nakama

Toshifumi Oikawa

Nozomi Kumakura

Yuichiro Oda

Noriaki Matsui

Kiyoharu Kakomura

Tadao Sugiura

Shun Motohashi

Takuya Machida

Hitoshi Kato

Kenji Morita

Hiroshi Matsumoto

Akihiko Sakai

Naohisa Nagata

An image forming system includes an image former configured to form an image on a sheet, an inspector configured to inspect the sheet on which the image has been formed by the image former and determine whether or not the image of the sheet has an abnormality, and a controller configured to, in a case where the inspector determines that the image of the sheet has the abnormality of positional deviation, perform an adjustment operation in which an image formation position by the image former is adjusted.

Image forming system that executes recovery process

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.

Image forming apparatus that performs shading correction to maintain print position accuracy

An image forming system includes a controller to discharge to a first discharger a sheet determined not to have a product defect and discharge to a second discharger a sheet determined to have a product defect. The controller is configured to, in a case where it is determined that a first sheet on which an image has been formed has the product defect, execute an adjustment operation of adjusting image forming conditions for an image former, and execute a recovery process in which the image formed on the first sheet is formed on a second sheet by the image former with the product defect removed based on completion of the adjustment operation.

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.

Image forming apparatus

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.

Image forming system

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.

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.

Image forming apparatus and image forming system

An image forming apparatus includes an image forming unit configured to form an image on a sheet being conveyed on a horizontal path and a double feed sensor configured to execute double feed detection processing of detecting a state in which a plurality of sheets being conveyed on the horizontal path are conveyed in a duplicate manner. The image forming apparatus includes a double feed detection function table, in which whether to enable or disable the double feed detection processing is set according to a type of a sheet. The image forming apparatus determines whether to execute the double feed detection processing at a time of image formation in accordance with sheet setting information including information on a characteristic of a sheet to be used for the image formation and setting information on whether to execute the double feed detection processing, and the double feed detection function table.

An image forming system includes a first feeding portion to feed a recording sheet, a second feeding portion to feed an inserting sheet from one of a plurality of supporting portions, and a controller capable of executing a job. In a case of performing a feeding process on a current recording sheet subsequent to a preceding inserting sheet, the controller starts the feeding process of the current recording sheet at a predetermined timing in a state in which sheets of a first amount are supported on the first supporting portion, and starts the feeding process of the current recording sheet at a timing later than the predetermined timing in a state in which sheets of a second amount smaller than the first amount are supported on the first supporting portion.

An image forming system includes a first feeding portion configured to feed a recording sheet, a second feeding portion configured to feed an inserting sheet from one of a plurality of supporting portions, and a controller configured to execute a determination process of determining whether or not there is a supporting portion usable as a new feeding source other than a supporting portion serving as a current feeding source of an inserting sheet. The controller is capable of switching between first control and second control in which a feeding process of a recording sheet is executed respectively in a first mode and a second mode in a case where it has been determined in the determination process that there is no supporting portion usable as the new feeding source.

An image forming system includes a first feeding portion configured to feed a recording sheet, a second feeding portion configured to feed an inserting sheet from one of a plurality of supporting portions, and a controller capable of executing a feed-before-detection mode in which a feeding process of a current recording sheet is started before a detection portion detects whether or not a last preceding inserting sheet is present on a supporting portion selected as a feeding source of an inserting sheet from among the plurality of supporting portions. The controller is configured to start the feeding process of the current recording sheet in the feed-before-detection mode and cause the second supporting portion to feed the last preceding inserting sheet.

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.

Image forming system, control method thereof, and non-transitory computer-readable storage medium

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.

Image forming apparatus, method for controlling the same, and non-transitory computer-readable storage medium

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.

Post-processing apparatus, control method therefor, and non-transitory computer-readable storage medium

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.

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Kashiwa, Japan

Takashi Yokoya