Canon Kabushiki Kaisha

Hidehiro Ushiozu

Takashi Yano

Masato Suzuki

Koji Miwa

Keita Nakajima

Yuji Mitsui

Tsutomu Ishida

Taku Fukita

Hidetoshi Hanamoto

Toshikazu Tsuchiya

Kosuke Ogino

Daisuke Momiyama

Tomoki Fujikawa

Shinji Hosoya

Hiroki Kato

Akira Matsushima

Satoshi Koga

Kenichirou Isobe

Eiji Wakiyama

A sheet feeding apparatus includes a stacking unit including a plate, a feeding unit including a roller, a holder including a detected member, a drive unit and a controller. The detected member is positioned in a first position where the detected member is not detected by a detector in a case that the feeding unit is new, and is moved from the first position to a second position where the detected member is projected so as to be detected by the detector when the new feeding unit is mounted on the holder and the roller is driven. The controller controls the drive unit to perform up-and-down operation of the plate so that the plate is set to a feedable state of the sheet in a case that the feeding unit is mounted, and determines whether or not the feeding unit is new based on a detection result of the detector.

Sheet feeding apparatus and image forming apparatus

An image forming apparatus comprises an accommodating unit that accommodates recording materials and has a regulating plate that regulates a trailing edge of the recording material in a feeding direction, detects a recording material fed from the accommodating unit, and measures time from a predetermined timing until a recording material is detected. An information processing apparatus receives time data obtained by a measuring unit from the image forming apparatus, classifies a plurality of time data received from a reception unit into a first group and a second group in accordance with a length of time, and determines using time data included in the first group and the time data included in the second group whether a position of the regulating plate is misaligned in relation to a reference position that corresponds to a size of the recording material accommodated on the accommodating unit.

Image forming system and image forming apparatus

An image forming apparatus comprises an accommodating unit that accommodates recording materials and a feeding unit that feeds an accommodated recording material, detects a fed recording material, and measures time from a predetermined timing until a recording material is detected. An information processing apparatus receives measured time data from the image forming apparatus, classifies the received plurality of time data into a first group and a second group in accordance with a length of time, selects a group for predicting a remaining life time of the feeding unit from the classified first group and second group, and predicts a remaining life time of the feeding unit using time data included in the selected group.

Image forming system, image forming apparatus, and feeding apparatus

A sheet feeding apparatus is provided with a disengaging mechanism configured to disengage a conveyance member and a separating member to be apart from each other. Either one of the conveyance member and the separating member is provided in a unit, which is attached to an apparatus body and is configured to be detached from the apparatus body toward a downstream side in the sheet conveyance direction, while the other provided in the apparatus body. A restriction portion is configured to restrict the unit from being attached to and detached from the apparatus body in a state where the conveyance member and the separating member are in contact with each other and to permit the unit to be attached to and detached from the apparatus body in a state where the conveyance member and the separating member are disengaged by the disengaging mechanism.

An image forming apparatus includes an LED unit capable of being in an exposing position or a retracted position, and a cartridge capable of being inserted into or pulled out with the LED unit in the retracted position.

Image forming apparatus

When a stirring member that stirs developer in a developer containing portion rotates at high speed, toner flies and the detection accuracy of light transmission type toner remaining amount detection is degraded. A developing apparatus including a developer containing portion that contains developer, a stirring member that stirs the developer in the developer containing portion, and a partition member which is disposed to separate the developer containing portion from a space adjacent to the developer containing portion and which bends to block at least a part of a light path, which is formed in the space and used to detect an amount of the developer, when being pressed by the stirring member via the developer.

Developing apparatus, process cartridge, and image forming apparatus

A developing unit includes a developer storage unit, a developer bearing member, an agitation member, a flexible member, and a magnet member. The developer storage unit stores a developer. The developer bearing member develops an electrostatic latent image formed on an image bearing member with the developer. The agitation member agitates the developer in the developer storage unit. The flexible member, disposed in the developer storage unit, is distorted by pressure applied by the agitation member via the developer. The magnet member, disposed on the flexible member, is displaced in response to the flexible member being distorted.

Developing unit, process cartridge, and image forming apparatus

A color electrophotographic image forming apparatus forms an image on a recording material. A plurality of cartridges is detachably mounted to a main assembly of the apparatus. The apparatus includes a cartridge supporting member for supporting the cartridges. The cartridge supporting member is movable between an inside position inside the main assembly and an outside position outside the main assembly. The apparatus also includes a shutter member movably provided on the cartridge supporting member. The shutter member is movable between an open position in which a photosensitive member supported by the cartridge supporting member is exposed and a closed position in which the photosensitive member is protected. The apparatus further includes a shutter moving device for moving the shutter member to the closed position when the cartridge supporting member is moved from the inside position to the outside position and for moving the shutter member to the open position when the cartridge supporting member is moved from the outside position to the inside position.

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Mishima, Japan

Hidehiro Ushiozu