Canon Kabushiki Kaisha

Nec Corporation

Keisuke Fujita

Naoki Hayashi

Masashi Tanaka

Ken Murooka

Kohei Okayasu

Masaaki Takeuchi

Koji Fujinaka

Takanori Watanabe

Junichi Sekiyama

Minoru Kawanishi

Takayuki Sugiyama

Hirotaka Ishii

Akinori Yokota

Shimpei Ishikawa

Marehiko Hirajima

Shogo Nagamine

Kenichi Tagami

Shota Kase

Yutaro Noji

Ryosuke Oda

A sheet discharging apparatus includes a discharging portion, a stacking portion, a moving member configured to move to a first position, a second position, and a third position, a detection portion, and a control portion. In a case where the detection portion detects that the moving member has reached the second position, the control portion controls the discharging portion in a first mode or a second mode. In the second mode, the control portion restricts the discharge of a sheet after a predetermined number of sheets has been discharged to the stacking portion. The control portion is configured to determine the predetermined number of sheets, depending on a type of the sheet discharged by the discharging portion, a length of the sheet in a sheet conveyance direction, and temperature and/or humidity.

Sheet discharging apparatus and image forming apparatus

An image forming apparatus includes a casing including a first side plate and a second side plate, a cartridge, an exposure unit, a transfer unit, a fixing unit, a nip pressure change unit, a door, and a connection portion. The first side plate includes an opening portion. The connection portion is arranged so as to penetrate the opening portion, and includes a first portion and a second portion. At least a part of the second portion is arranged so as to overlap with the exposure unit when viewed in a predetermined direction, and is arranged between the first side plate and the exposure unit in the predetermined direction.

Image forming apparatus

An image forming apparatus includes a feeding portion, an image forming portion, a fixing portion, a casing, a discharging portion, a reversing portion, and a controller. In a first operation, the image forming portion forms an image on a sheet fed by the feeding portion, and then the discharging portion discharges the sheet. In a second operation, after the reversing portion reverses and conveys the sheet (i) which is fed by the feeding portion and (ii) which passes through the image forming portion without forming the image thereon and is conveyed to the second conveyance passage, the image forming portion forms the image on the sheet, and then the discharging portion discharges the sheet.

Image forming apparatus and sheet discharging device

A sheet material detecting device includes a leading end flag, a pair of middle size flags, a pair of large size flags which take stand-by positions and operating positions by contacting a sheet, respectively. Each of middle size flags changes from the stand-by position to the operating position linking with changing to the operating position of each of large size flags. A link is moved from a first position to a second position in a case that both of middle size flags take the operating positions and is restricted in movement to the second position in a case that both of middle size fags do not take the operating portions. A controller detects a width of the sheet base on a timing of the operating position of the leading end flag and a timing of movement of the link from the first position to the second position.

Sheet material detecting device, sheet material feeding device and image forming apparatus

A transmission unit transmits driving force to be supplied from a motor to a roller pair. A switching unit acts on the transmission unit to switch a rotation direction of the roller pair by the driving force between a normal rotation and a reverse rotation. A control unit controls a rotation speed of the motor to convey the sheet at a second conveyance speed in a part of a first time period. The second conveyance speed is lower than a first conveyance speed. The first conveyance speed is a conveyance speed when the sheet is conveyed in the image forming unit. In the first time period the sheet having the image formed on the first surface is conveyed in a first direction. In a second time period the sheet is conveyed in a second direction.

Image forming apparatus that can form images on both sides of sheet by inverting sheet

The present invention relates to a fixing apparatus including a tubular film, a heater provided at an inside of the film, a protection element provided at the inside of the film, and at least one conductive member provided at the inside of the film. The protection element includes two terminals and a switch that turns off to shut off power to the heater when the heater abnormally generates heat. A first end of the conductive member is electrically connected to one of the terminals of the protection element. The conductive member is not coated with an insulator, and a second end of the conductive member projects out of the film so that the cost of the fixing apparatus is reduced.

Mounted fixing apparatus for fixing an image formed on a recording medium

A heater holder includes a restriction portion and a recessed portion. The restriction portion determines the position of a cable in the longitudinal direction of the heater. The recessed portion, against which a bare conductive portion of the cable is to be positioned, is provided at a position that is different from the position of the restriction portion as viewed in a direction intersecting with the longitudinal direction. A wire is joined to the bare conductive portion somewhere between the restriction portion and the recessed portion.

Fixing apparatus including cable restriction portion

An image forming apparatus includes a photosensitive drum, an image forming portion for forming an image on the drum and for transferring the image to a sheet, and a fixing portion for fixing the image on the sheet, while heating the sheet in a fixing nip. The fixing portion is provided above the drum, and includes a first roller, a second roller cooperative with the first roller to form the fixing nip, first and second covers for protecting the first and second rollers, respectively, and at least one opening for fluid communication between an inside and an outside of the fixing portion, the opening being provided in the first cover at a position that is lower than a line connecting a rotation axis of the first roller and a rotation axis of the second roller, as seen along a rotational axis of the second roller.

Image forming apparatus having a fixing portion and at least one opening for fluid communication between an inside and an outside of the fixing portion

The present invention is directed to downsize the main body and achieve a good image quality at a low cost. A rotation shaft of a first discharge roller is tilted with respect to that of a second discharge roller. The center of oscillation C of a first discharge roller holding member is provided more upstream in the direction in which a sheet is discharged than a straight line made by the rotation center of the first discharge roller and the rotation center of the second discharge roller.

An image forming apparatus includes a sheet feeding device having a separation pad holding unit, a separation pad fixing unit, and a compression unit while vibration damping unit(such as a sponge member and a Mylar member) that is attached to the compression unit does not contact the separation pad holding unit and the separation pad fixing unit.

Sheet feeding device and image forming apparatus

Image fixing apparatus for fixing a toner image through a nip, the apparatus including a cylindrical film; a nip forming member contacting an inner surface of the film; a pressing rotatable member forming the nip in cooperation with the nip forming member with the film interposed therebetween; and a regulating member for regulating movement of the film in a direction of a generatrix of the film, wherein the regulating member has an opposing surface opposing an edge of an end portion of the film with respect to the direction of the generatrix, and the opposing surface has a regulation region for regulating the edge of the film when the film is driven and moves in the generatrix direction, wherein the regulation region is narrower in a downstream side of a center portion of the nip than in an upstream side thereof with respect to a sheet feeding direction.

Image fixing appratus for fixing a toner image on a recording material by heating the toner image while feeding the recording material through a nip

A fixing device configured to heat a recording material bearing a toner image at a nip portion while conveying the recording material includes a tubular film, a nip portion forming member contacting an inner surface of the film, a pressure member forming the nip portion together with the nip portion forming member via the film, and a regulating member configured to regulate a movement of the film by contacting an end surface of the film. The regulating member includes, in a vicinity of the nip portion, a regulating surface inclined such that a distance from an imaginary plane including the end surface is gradually decreased as the regulating surface extends away from the nip portion to a circumferential direction of the film, and that the distance therefrom is gradually increased as the regulating surface extends in a radial direction of the film.

Image forming apparatus for heating a recording material bearing a toner image

A quarantine deviceperforms processing on a network provided with a VLAN-aware Layer 2 Switch. The quarantine deviceincludes a terminal detection unitthat, when a single terminal is connected to a specified port of the Layer 2 Switchthrough a VLAN-unaware hub, detects a connection of a new terminalto the hub, and a switch control unitthat, upon detecting the connection of the new terminal, configures the specified port as a trunk port and, furthermore, configures a first VLAN, which transfers only Ethernet frames having preset tags attached thereto, and a second VLAN, which transfers only Ethernet frames having no tags attached thereto, on the specified port.

Quarantine device, quarantine method, and computer-readable storage medium

An image forming apparatus includes a main assembly; a cartridge for forming a toner image on a sheet material; a fixing unit for fixing the toner image on the sheet material; and an opening for exposing an inside of the main assembly. The fixing unit and the cartridge are mountable into the main assembly and are disposed side by side. When the fixing unit and the cartridge are mounted or demounted, the fixing unit passes through the opening, and the cartridge passes through a space in which the fixing unit is to be mounted and passes through the opening. When the fixing unit and the cartridge at the time of passing through the opening are projected onto a surface perpendicular to a mounting and demounting direction, a contour of a projected area of the cartridge is at least partly inside a contour of a projected area of the fixing device, and the cartridge passes through the inside of the contour of the projected area of the fixing device when passing through the opening.

Growing community of inventors

Sagamihara, Japan

Keisuke Fujita