Kyocera Document Solutions Inc.

Kyocera Mita Corporation

Mita Industrial Co., Ltd.

Susumu Hanano

Mitsuhiro Goda

Tadahiro Kiyosumi

Mitsuharu Yoshimoto

Hiroshi Wada

Tetsuro Tomoe

Takeshi Sakaguchi

Junichi Inada

Susumu Takehara

Eijiro Masaki

Sinji Yamamoto

Shinji Yamamoto

Naoyuki Ishida

Hirofumi Tsuji

Yoshifumi Okauchi

Kenji Oda

Yukihiro Itoh

Takashi Mihara

Kiyotaka Kobayashi

Takahiko Murata

Takahisa Nakaue

Hiroki Morishita

Masahiko Miyazaki

Tomohiko Yamakawa

Ai Takagami

Shuichi Akedo

Chisato Hatakeyama

Yukihiro Ito

Toshihiko Watanabe

Katsuya Ota

Yoshimi Shimizu

Hidehisa Konishi

Tetsuya Ichigotani

Shoji Hirano

Syouji Kouda

A maintenance device has a maintenance unit. The maintenance unit has a blade unit to which a plurality of wiping blades are fixed, a wiper carriage to which the blade unit is attached, and a support frame that supports the wiper carriage. The wiper carriage has a stationary portion with a sliding roller, a movable portion with a positioning roller, and an elastic member. The elastic member elastically supports the movable portion relative to the stationary portion, and elastically contracts, when the maintenance unit is pressed against a plurality of recording heads by a unit ascent-descent mechanism with an excessive pressing force stronger than a predetermined pressing force, by receiving the reaction force of the excessive pressing force.

Recording head maintenance device and inkjet recording apparatus therewith

An image carrying member unit is provided with an image carrying member, and a unit housing. The image carrying member includes an image carrying member main body which has an outer peripheral surface on which a photosensitive layer is formed, a flange part which is secured to both ends of the image carrying member main body, a cylindrical oil-impregnated sintered bearing which is secured to the through-hole of the flange part, a conduction member which conducts electricity between the oil-impregnated sintered bearing and the image carrying member main body, a spindle which is slidably inserted in the oil-impregnated sintered bearing and secured to the unit housing, and a contact spring which has a coiled spring part into which the spindle is inserted, and which is sandwiched in a compressed state between an end surface in the axial direction of the oil-impregnated sintered bearing and the unit housing.

Image carrying member unit and image forming apparatus therewith

An image carrier unit of the present disclosure includes an image carrier, a charging device, a unit housing and a drive mechanism. The charging device is fittable to and removable from the unit housing in a direction perpendicular to its longitudinal direction, and has a charging member and a cleaning member for cleaning the charging member. The drive mechanism has a biasing member for biasing a rotating shaft of the cleaning member in a first direction extending along its axial direction, and a moving member for moving the rotating shaft of the cleaning member in a second direction opposite to the first direction. An engaging portion to engage with an engaged portion provided on the unit housing side is formed at one longitudinal end portion of the charging device, and an engagement state between the engaging portion and the engaged portion is retained by biasing force of the biasing member.

Image carrier unit and image forming apparatus including the same

An image forming apparatus includes an image carrier unit, a developing device, and an intermediate transfer body. The image forming apparatus body includes a positioning member having a positioning hole for inserting a positioning pin in a mounting direction and a guiding member including a guide rail portion for guiding the image carrier unit when mounting and removing the image carrier unit. The image carrier unit includes a sliding portion that slides with respect to the guide rail portion. When the image carrier unit is drawn from a mounted state where the image carrier unit is mounted to the image forming apparatus body, the sliding portion is drawn by a predetermined distance in parallel with the rotation shaft direction and then moves in a direction where the image carrier retreats from the developing device and the intermediate transfer body, along the guide rail portion.

Image forming apparatus that ensures improved replacement workability of image carrier unit

An image forming apparatus includes a body, a photoreceptor unit, and a developing unit. The developing unit includes a first attaching/detaching lever that moves a developing sleeve from a first position to a second position by lifting the first attaching/detaching lever. The photoreceptor unit includes a second attaching/detaching lever that moves the developing sleeve from the first position to the second position by lifting the second attaching/detaching lever. The photoreceptor unit and the developing unit move the developing sleeve to the second position by lifting the first or second attaching/detaching lever so that the photoreceptor unit and the developing unit are individually detached from the body.

Image forming apparatus comprising a body, a photoreceptor unit, and a developing unit

An image forming apparatus includes: a cleaning portion configured to remove toner stuck to a surface of an image carrier; a polishing roller that is rotatable while being in contact with the image carrier; a guide portion disposed with a gap having a predetermined width from an outer circumferential surface of the polishing roller, and configured to guide the removed toner to pass below the outer circumferential surface of the polishing roller; opening portions each formed in a predetermined size at a position below the lower portion of the outer circumferential surface of the polishing roller in the guide portion; and a housing including a wall surface that defines, together with an end of the guide portion in a rotation direction of the polishing roller, a falling path through which the toner falls from the end, the housing storing the cleaning portion and the polishing roller.

Image forming apparatus including polishing roller

An image forming apparatus () includes an image carrier unit () and a positioning member () configured to position the image carrier unit () to the apparatus main body (). The image carrier unit () has a concentric circumference part (L), (R) formed on a concentric circle with a rotating shaft () of the image carrier () and the apparatus main body () has an edge part (L), (R) facing the concentric circumference part (L), (R) at the attachment position. The positioning member () has an intervening part () formed with an edge side abutment face () facing the edge part (L), (R) of the apparatus main body () and a unit side abutment face () facing the concentric circumference part (L), (R) of the image carrier unit ().

Image forming apparatus

An image forming unit includes: a photoconductive drum; a charging member extending in a direction along a rotary shaft of the photoconductive drum; and a holding member holding the charging member at a frame member. While held at the frame member with the holding member in between, the charging member is arranged in parallel to the photoconductive drum in contact with a circumferential surface of the photoconductive drum with their rotary shafts in parallel. The holding member and the frame member respectively have interference-preventing-shaped parts provided at a tip part of the holding member in a direction where the holding member is attached and at a position of the frame member receiving the holding member. The interference-preventing-shaped parts are capable of first making contact with each other upon attachment of the charging member to the frame member to thereby prevent interference between the holding member and the photoconductive drum.

Image forming unit and image forming apparatus provided with same

An image forming apparatus includes an apparatus main body, a housing, a photosensitive drum, a cleaning blade, a contact portion, and a contacted portion. The housing and drum are disposed in an internal space of the main body. The blade is a plate-shaped elastic member extending in an axial direction of a rotational axis of the drum, is supported by the housing, and contacts a circumferential surface of the drum for cleaning. The contact portion is disposed opposite the housing in the main body. The contacted portion is disposed at a center portion, in the axial direction, of the housing and is contacted by the contact portion. A position of the center portion, in the axial direction, of the housing is adjusted in a cross section intersecting the axial direction by the housing being inserted into the internal space and the contact portion coming into contact with the contacted portion.

An image forming apparatus gas a photosensitive drum, an anti-static lamp, and a drum unit, The drum unit includes a unit main frame for holding the photosensitive drum, and a holder frame for holding the anti-static lamp, The holder frame is detachably attached to the unit main frame.

Photosensitive drum unit, and image forming apparatus using the same

An image forming apparatus includes a drum unit configured to be attachable to and detachable from the body through inserting the drum shaft into the hollow portion of the photoreceptor drum, a plurality of ribs formed on the drum unit, a guide rail formed in a body, and a plurality of cutouts that is formed in the guide rail is configured to engage with the plurality of ribs when the drum unit is positioned at a regular position. The drum shaft and the guide rail are configured with respect to each other such that a center of the drum shaft is substantially coaxial with a center of the photoreceptor drum when the drum unit slides relative to the body in a state in which the plurality of ribs is placed on the guide rail.

Image forming apparatus including drum unit attachable and detachable along drum shaft

A cleaning apparatus is provided with a cleaning roller that is positioned so as to be in contact with a photosensitive drum, and with a toner layer thickness regulating member that regulates the thickness of a toner layer adhering to the surface of this cleaning roller. The toner layer thickness regulating member is formed by a toner layer thickness regulating roller that rotates in contact with the cleaning roller.

Cleaning apparatus and image forming apparatus

A cooling mechanism for a photoreceptor includes: a photoreceptor of cylindrical shape; a pair of flanges respectively attached to both ends in an axial direction of the photoreceptor; a rotational shaft that is inserted into a shaft center of the photoreceptor; a holder that is disposed to face a first flange and rotatably supports the rotational shaft; and a main body frame that supports the holder. In such a cooling mechanism for a photoreceptor, an air duct is configured by the through hole formed in the flange and the concave portion formed on the holder, and discharges air flow generated inside the photoreceptor to the outside thereof.

Photoreceptor, cooling mechanism for photoreceptor, and image forming apparatus provided with the same

A cleaning device may include a polishing roller, an ejection member, and a conveying member. In some embodiments, the polishing roller may be configured to remove and collect a residual substance adhering to a surface of an image bearing member while rotating in contact with the image bearing member. In an embodiment, the ejection member may be configured to eject the substance collected by the polishing roller to the outside of the cleaning device. An embodiment may include a conveying member configured to follow the rotation of the polishing roller by being in contact with the polishing roller and to convey toner in the cleaning device on a surface of the polishing roller in an axial direction of the polishing roller. When an image is not formed, the polishing roller rotates in a direction opposite a rotating direction in which the polishing roller rotates when an image is formed.

Cleaning device that cleans a surface of an image bearing member by removing substances remaining on the surface of the image bearing member after a toner image is transferred onto a sheet and image forming apparatus including the same

A rotary member includes a rotary shaft with a flange that projects radially out from a position near an end of the rotary shaft. A shaft end portion of the rotary shaft projects longitudinally beyond the flange and has a lubricant filling hole for receiving a lubricant. The rotary member also includes a bearing with a wall surface that has a recess. The recess has an opening and a closed depth end. The shaft end portion is accommodated in the recess so that the flange contacts the wall surface and closes off the recess to define a substantially closed space that can retain lubricant.

Growing community of inventors

Osaka, Japan

Susumu Hanano