Canon Kabushiki Kaisha

Atsushi Kawarago

Yuta Hojo

Yasuhiro Shimura

Kei Sato

Takao Nada

Fumiaki Mizuno

Kenichi Fujii

Yohei Suzuki

Jun Asami

Katsuhiko Oba

Toshiya Kaino

Junichi Ochi

Miho Kaiga

Toshifumi Kitamura

Yuya Hirano

Ryuichi Umehara

Taku Nishikawa

Shun Yamashita

An image forming apparatus includes an image forming unit, a reversing unit, a detection unit for detecting leading and trailing edges of a sheet, and an alignment unit for aligning an image with respect to the leading edge of the sheet, and generates an output item in which a first sheet with a first image and a second sheet with a second image are stacked, a surface with the first image of the first sheet and a surface with the second image of the second sheet face each other, and a trailing edge of the first sheet and a leading edge of the second sheet face each other. The alignment unit corrects a position of the second image with respect to the leading edge of the second sheet during formation of the second image based on a detection result of the trailing edge of the first sheet.

Image forming apparatus

A shaft on which a torque limiter is mounted includes a rotation restricting portion. The rotation restricting portion is inserted into and engaged with an engaging portion of the torque limiter. The rotation restricting portion is provided with an outer circumferential portion which is projected in an outer diameter direction from an outer circumference of the shaft and of which an outer circumferential surface is formed parallel with an outer circumferential surface of the shaft and an engaging portion connected to the outer circumferential portion and engaging with the engaging portion of the torque limiter. The engaging portion of the rotation restricting portion is provided with a tip portion of a R shape opposing the engaging portion of the torque limiter, and a width thereof in a direction perpendicular to an inserting direction into the engaging portion of the torque limiter is a width capable of being inserted into the engaging portion of the torque limiter.

Shaft and image forming apparatus

A cleaning apparatus includes an endless belt configured to bear a toner image, a rotary member configured to be wound around by the belt, and configured to rotate integrally with the belt, a bearing configured to rotatably support the rotary member, a cleaning unit configured to come into contact with a surface of the belt and collect an adhering matter adhered onto the surface, an urging member configured to urge the cleaning unit toward the surface of the belt, and a support member configured from a single member and including a first supporting portion, a second supporting portion, and a third supporting portion. The first supporting portion rotatably supports the belt via the bearing and the rotary member. The second supporting portion pivotably supports the cleaning unit. The third supporting portion supports the urging member.

Cleaning apparatus for cleaning an element that bears a toner image and image forming apparatus having the cleaning apparatus

A transfer unit includes a reading unit to read an image on a sheet conveyed along a conveyance path, a first signal transmission member having a flat shape and is connected to the reading unit, and a relay member connected to the first signal transmission member. The relay member relays a signal from the first signal transmission member, and a second signal transmission member having a round shape and is connected to the relay member. The second signal transmission member leads into an apparatus body from an inner portion of the transfer unit in an axial direction of a first rotation shaft.

A sheet feeding device includes a stacking portion, a first roller, a second roller, a third roller rotatable to provide peripheral movement in a predetermined direction and to provide peripheral movement in a direction opposite to the predetermined direction, a detecting unit, a driving unit for executing a feeding operation by the first roller, and a control unit for providing an instruction to the driving unit so as to continue or stop the feeding operation. The predetermined rotational frequency is larger than 0 and is smaller than a rotational frequency of the third roller in a period in which the third roller is rotated in the predetermined direction in a state in which a single recording material is fed to the nip.

Sheet feeding device

An image forming system includes an image forming apparatus and a discharging device. The image forming apparatus includes a first rotatable member, a second rotatable member positioned downstream of the first rotatable member, a first driving portion for driving the first and second rotatable members, and a first controller for controlling the first driving portion. The discharging device includes a third rotatable member, a second driving portion for driving the third rotatable member, and a second controller for controlling the second driving portion. The first controller controls a driving speed of the second rotatable member depending on a driving speed of the first rotatable member and feeds the driving speed of the first rotatable member to the second controller. The second controller controls a driving speed of the third rotatable member depending on the driving speed fed from the first controller.

Image forming system with information on conveying speed transferred between control units

An image forming apparatus includes an accommodation unit, feeding, conveying, and separating members, and detecting, control, image forming, and regulating units. The conveying member conveys a fed recording material. The separating member forms a nip and separates recording materials. The detecting unit detects that the recording material has been fed to the nip. The feeding member starts feeding an accommodated recording material and, where a recording material is fed to the nip, causes the feeding to be finished. An image is formed on a fed recording material. The regulating unit regulates an end on an upstream side. The control unit measures a period from a recording material feeding to detection that a recording material is fed to the nip. Based on the measured period, information is output indicating that a position of the regulating unit is deviated from a position according to a size of the accommodated recording materials.

Image forming apparatus and feeding device

A developer container includes an accommodating portion accommodating developer and is provided with an opening, a shutter member for opening and closing the opening, a projection for moving the shutter member, and a guiding portion for guiding the projection. When the projection is pushed in a pushing direction, the projection is moved in a direction different from the pushing direction by being guided by the guiding portion in contact with the guiding portion and thereafter is moved in the pushing direction, thereby to move the shutter member to open the opening.

Developer supply cartridge shutter opening projection that moves in two directions

An apparatus is capable of switching between a mode in which a first resistance heating element and a second resistance heating element are connected in series and a mode in which they are connected in parallel. When a temperature increase rate detected by a temperature detection unit is smaller than a threshold rate although a current detected by a current detection unit is greater than a threshold current, a notification of a failure is issued.

A shutter mechanism capable of opening and closing an opening through which a developer accommodated in a container is movable includes a shutter member movable to open and close the opening; and a limiting member for limiting movement of the shutter member in a direction of opening the opening. When the container is inclined, the limiting member moves to a position where the limiting member limits the movement of the shutter member.

Shutter mechanism, developer accommodating container, process cartridge and image forming apparatus

Image forming apparatus having a fixing unit comprising a current detection unit

The invention provides an image forming apparatus, having: an apparatus main body; a fixing unit fixing an image onto a recording material at a fixing nip portion, the fixing unit including a pressure-applying portion applying a pressure to the fixing nip portion and a pressure-releasing portion releasing the pressure; an opening/closing member disposed in the apparatus main body; an engaging portion engaging with the pressure-releasing portion of the fixing unit in a state of being mounted to the apparatus main body for moving the pressure-releasing portion, the engaging portion moving in conjunction with an opening/closing action of the opening/closing member; and a phase adjusting portion adjusting a phase of the pressure-releasing portion to a phase of the engaging portion when the opening/closing member is opened, in conjunction with a mounting action of the fixing unit to the apparatus main body.

In order to provide a sheet conveying apparatus and an image forming apparatus capable of alleviating a bumping noise generated between a sheet and an inner guide member when the sheet passes through a curved sheet conveying path, a pair of intermediate conveying rollers is arranged in positions corresponding to both lateral sides in a width direction of the feeding roller and subsidiary feeding roller in a sheet conveyance direction. In addition, the subsidiary intermediate conveying roller abuts on the intermediate conveying roller with an inclination such that the sheet conveyance force is directed to the center of the sheet conveying path in a width direction. As a result, the sheet makes contact with the inner guide member of the facing guide member of the sheet conveying path by undulating the sheet in a width direction when the sheet is extracted and conveyed by the pair of intermediate conveying rollers.

Sheet conveying apparatus and image forming apparatus

Disclosed in an apparatus in which an actuating member provided for an opening and closing member actuates a switch provided for a main body of the apparatus. The apparatus includes a protecting member protecting the switch and a restricting member restricting an object entering an opening of the protecting member. The restricting member has an opening smaller than the opening of the protecting member. The restricting member is movable in the direction intersecting the direction in which the actuating member passes through the opening of the restricting member. The opening of the restricting member is reduced in size to prevent an accidental operation while being insusceptible to a space in the apparatus or deformation of the apparatus.

A sheet feeding apparatus including: a regulating member movable so as to regulate a position of a sheet in a sheet regulated position corresponding to the sheet to be contained in a cassette main body; a holding mechanism for holding the regulating member; and an operating portion disposed at the regulating member for releasing the regulating member from being held by the holding mechanism, wherein when the regulating member is moved in one direction or the other direction opposite to the one direction for regulating the sheet, the operating portion is press-operated in the direction intended to move so that the regulating member is released from being held by the holding mechanism.

Growing community of inventors

Suntou-gun, Japan

Atsushi Kawarago