Canon Kabushiki Kaisha

Hiroyuki Eda

Kenji Kuroki

Takashi Fujimori

Hidenori Matsumoto

Hiroaki Tomiyasu

Ryou Sakaguchi

Shin Iwasaki

Naoto Watanabe

Riki Fukuhara

Hiromi Shimura

Junichi Endo

Rumi Konno

Yuichi Yamamoto

Sumito Tanaka

Hajime Kaji

Yuya Ohta

Tsuyoshi Shiga

Yuga Yamauchi

Yuko Shimpo

Hiroto Nishihara

Tatsuomi Murayama

Hirohisa Nakajima

Toshifumi Oikawa

Sho Ikemoto

Yuko Kiyota

Shinya Suzuki

Eiichi Motoyama

Hideyuki Ikegami

Takuma Nakamura

Toshifumi Kakutani

Kazumi Sato

Yousuke Hata

Tadaaki Saida

Takeyuki Suda

Kazuyuki Iwamoto

Jun Tomine

Kenichi Shibuya

Rin Ishikawa

Atsushi Chaki

Toshiyuki Abe

Shota Soda

Toshihide Shima

Manabu Koseki

Tsuyoshi Tajiri

Hijame Kaji

A charge eliminating apparatus includes a conveying unit configured to convey a sheet, a charge eliminating member configured to eliminate charge of the sheet conveyed by the conveying unit, a setting unit configured to set a charge elimination amount by the charge eliminating member, and a controller configured to control both a voltage applied to the charge eliminating member and a sheet conveyance speed of the conveying unit based on the charge elimination amount set by the setting unit.

Charge eliminating apparatus, image forming system, and charge adjusting apparatus

A charge eliminating apparatus includes a charge eliminating member, a moving unit, and a controller. The controller configured to execute a first processing in which charge of a sheet is eliminated by applying voltage to the charge eliminating member in a state where the charge eliminating member is positioned at a contact position, and a second processing in which charge of a sheet is not eliminated while voltage is not applied to the charge eliminating member in a state where the charge eliminating member is positioned at the contact position. In a mixed job in which a first type of sheet and a second type of sheet that differs from the first type of sheet are conveyed, the controller is configured to execute the first processing to the first type of sheet and execute the second processing to the second type of sheet.

Charge eliminating apparatus and image forming system

An image forming system including a printer that forms an image on a sheet and an inspection apparatus that inspects an image on a sheet delivered from the printer. A discharge mode for discharging a sheet inspected by the inspection apparatus and binding processing for binding a plurality of sheets as one bundle are set on a console panel. In a case where a first mode for discharging a first sheet determined as normal by the inspection apparatus to a first discharge destination, discharging a second sheet determined as defective by the inspection apparatus to a second discharge destination different from the first discharge destination, and discharging a third sheet conveyed subsequently to the second sheet, determined as normal by the inspection apparatus, to the first discharge destination is set as the discharge mode, and the binding processing is set, execution of the corresponding job is stopped.

Image forming system having function of inspecting sheet, method of controlling same, and storage medium

An image forming apparatus includes a feeding unit, an image forming unit, a reading unit, a conveyance unit, a first discharge unit and a second discharge unit, a determination unit, and a control unit. When an (n)th sheet in a first copy is an abnormal sheet, remaining sheets include sheets fed by the feeding unit after the abnormal sheet is fed by the feeding unit until the image on the abnormal sheet is read by the reading unit, and the remaining sheets include a first group of remaining sheets and a second group of remaining sheets. The control unit is configured to execute an abnormal discharge mode in which the sheets of the first group of the remaining sheets are discharged to the second discharge unit and each of the sheets of the second group of the remaining sheets is discharged selectively to the first or the second discharge unit.

Image forming apparatus

An image forming apparatus includes an image processor configured to convert image data based on a first conversion condition; an image forming unit configured to form an image on a sheet based on the image data converted by the image processor, the image forming unit having an image bearing member on which the image is to be formed, a transfer unit configured to transfer the image from the image bearing member onto the sheet, and a fixing unit configured to fix the image to the sheet; a conveyance roller configured to convey the sheet having the image fixed thereto; a reading unit configured to read a pattern image on the sheet conveyed by the conveyance roller; and a detector configured to detect a pattern image on the image bearing member.

Consumption of toner can be minimized in a method of performing dew condensation elimination through toner application to a photosensitive drum. To this end, an image forming apparatus includes a plurality of photosensitive drums; an intermediate transfer belt to which toner images are transferred from the plurality of photosensitive drums; a controller configured to determine whether or not a dew condensation occurrence condition is met; and a dew condensation elimination unit configured to perform a dew condensation elimination operation by applying toner to at least one of the plurality of photosensitive drums in a case in which the controller determines that the dew condensation occurrence condition is met and when a start instruction for image formation is received. When the image formation is started in a color image formation mode, the dew condensation elimination unit executes a first dew condensation elimination mode of applying toner to all of the plurality of photosensitive drums. When the image formation is started in a monochromatic image formation mode, the dew condensation elimination unit executes a second dew condensation elimination mode of applying toner to only the black photosensitive drum.

Image forming apparatus with dew condensation elimination modes

An apparatus includes an image forming unit configured to form an image with a developing material; a mounting unit having a container mounted therein, the container containing the developing material; a controller configured to determine a remaining amount of the developing material in the container and determine a replenishing error of the container; and a display unit configured to display, in a state where a first condition is satisfied, a screen to prompt a reattachment of the container detached from the mounting unit while the container is not in the mounting unit, and display, in a state where a second condition is satisfied, a screen to prompt an execution of an operation for solving the replenishing error while the container is not in the mounting unit.

Image forming apparatus for displaying a screen to prompt a user to re-attach a container having developing material

An image forming apparatus prevents sheets from remaining inside the image forming apparatus even when a container that is not empty is replaced with another container. The image forming apparatus includes a mount to which a container containing developer is mounted, and a replenishing unit replenishing an image forming unit with the developer from the mounted container. In a case where the mounted container is replaced with another one without replacement of the container necessary during image formation of the image forming unit, a controller suspends feeding of a sheet, discharges the sheet remaining in a conveying path, and disables an image forming operation. A display displays a screen for prompting replacement of the mounted container if replacement of the container is necessary, and displays a screen for prompting re-mounting of the replaced container in a case where the mounted container is replaced without replacement of the container necessary.

Image forming apparatus with removable developer container

An image forming apparatus includes an image forming unit, mounting unit to which a container is mounted, cover, detector, controller, and display unit. The image forming unit forms an image by using a developer, the cover is opened/closed to replace/cover the mounted container, the detector detects the mounted container in a cover closed/opened state, the controller determines whether a remaining amount of the developer in the container is more than a predetermined amount, and the display unit displays, in a case where the container in which the remaining amount is more than the predetermined amount is removed, a first screen promoting re-mounting of the container, a second screen on closing the cover without detecting the container after displaying the first screen, and a third screen after displaying the second screen in a case where the container is not mounted.

In an image forming apparatus including a plurality of image forming stations, on the basis of a density of a toner image formed in an upstream image forming station, an operation of a pre-exposure device in a downstream image forming station is controlled.

Image forming apparatus with pre-exposure member

An image forming apparatus, including: a conveyance unit configured to convey a sheet on a conveyance path on which the sheet is conveyed; a first conveyance path opening member configured to open a first portion of the conveyance path; a second conveyance path opening member configured to open a second portion, which is located downstream the first portion, of the conveyance path; a sheet leading edge position detecting unit configured to detect a position of a leading edge of a stopped sheet on the conveyance path; and a determination unit configured to determine, based on a detection result of the sheet leading edge position detecting unit, one of not conveying the stopped sheet, causing the conveyance unit to convey the stopped sheet toward the first portion, and causing the conveyance unit to convey the stopped sheet toward the second portion.

An image forming apparatus includes a waste toner container for containing toner recovered from a photosensitive drum and an intermediate transfer belt. The waste toner container has a stirring screw for conveying the toner in the waste toner container. The stirring screw is driven by a waste toner motor. A CPU determines whether the waste toner container is in need of replacement depending on a rotation speed or driving current of the waste toner motor. If the waste toner container is in need of replacement, the CPU displays such on a display unit to provide a notification to a user.

Image forming apparatus including determination of amount of waste toner

The image forming apparatus comprises a photosensitive drum which is replaceable, an intermediate transfer belt unit which is brought into contact with the photosensitive drum to operate and which is replaceable, and a separation motor configured to move the intermediate transfer belt unit in a direction toward the photosensitive drum and in a direction away from the photosensitive drum. The image forming apparatus causes the separation motor to separate the intermediate transfer belt unit and the photosensitive drum from each other in a case where at least one of the photosensitive drum and the intermediate transfer belt unit reaches the replacement timing when the image forming apparatus shifts to a low-power state in which power consumption of the image forming apparatus is suppressed compared with that of the image forming apparatus in a normal operation.

Image forming apparatus, control method of contacting/separating state of component

An image forming apparatus includes a determiner for determining whether to execute a first image formation in an acquisition mode, in which an image forming operation is carried out using an acquired timing, or a second image formation in a non-acquisition mode, in which the image forming operation is carried out using exposure timing acquired in a previous acquisition mode. The determiner makes the determination on the basis of a current output of a temperature sensor and a previous output of the temperature sensor. When the determiner determines the execution of the first image formation, driving speeds of a first driver and a second driver are set, before the execution of the operation in the acquisition mode, on the basis of the current output of the temperature sensor, and the operation in the acquisition mode and the image formation are carried out using the driving speeds currently set.

Growing community of inventors

Moriya, Japan

Hiroyuki Eda