Kyocera Document Solutions Inc.

Kyocera Mita Corporation

Teruhiko Nagashima

Takahisa Nakaue

Takashi Morita

Tamotsu Shimizu

Hidenori Takenaka

Hironobu Oi

Masaki Hayashi

Yoshihiro Yamagishi

Eiji Nimura

Naoki Mizutani

Kenichi Tamaki

Koji Kuramashi

Mitsuhiro Goda

Hiromu Matsumoto

Ikuo Makie

Hiroaki Kitagawa

Daisuke Fujiwara

Yoshimi Shimizu

A developing device includes a developing container, a developing roller, a regulating blade, a seal member, and a resin member. The regulating blade includes a mounting plate and a blade plate. The developing container has a facing part facing a step part due to thickness difference between the mounting plate and the blade plate. The seal member has a resin placement area, and is squeezed between the regulating blade and the facing part. The resin placement area is an area that penetrates the seal member and is surrounded by the seal member. The resin placement area overlaps the step part.

Developing device having a resin replacement area, image forming apparatus, and method for manufacturing developing device

The image forming apparatus includes an image carrier, a developing unit, and a housing. The developing unit includes a toner carrier, a development container, a circuit board, and a board retaining portion. The development container rotatably supports both end portions of a rotating shaft of the toner carrier, and contains developer and the toner carrier. The development container includes a protrusive support portion which protrudes from both end portions of an axial direction and which is pivotably supported by a retaining frame. The development container is pivoted on the protrusive support portion serving as a fulcrum, and the toner carrier is reciprocatively movable so as to come into contact with or separate farther from the image carrier. The board retaining portion is pivotably supported on a fulcrum given by a retention support portion coaxial with the protrusive support portion, and is independent of the reciprocative movement of the development container.

Image forming apparatus

A toner conveying device that conveys toner. The toner conveying device includes a housing, a toner guide portion, and at least two vibration motors. The housing has, in its inside, a toner conveyance path. The toner guide portion is provided in the housing and includes an opening through which toner flows in or out, and a guide passage communicating between the opening and the toner conveyance path. The at least two vibration motors apply vibrations to the toner guide portion. The vibration motors are started at different timings, and driven and controlled by drive signals in which a first pulse and a second pulse of different pulse widths alternately continue.

Toner conveying device, and image forming apparatus including toner conveying device

A toner conveying device conveys toner supplied from outside. The toner conveying device includes a housing, a plurality of toner acceptors, a plurality of legs, a bracket, and a vibration generator. The housing has a toner conveyance path inside. The toner acceptors are provided on the housing to accept toner supplied from outside and guide the toner to the toner conveyance path. The legs are fixed near the toner acceptors on the housing, respectively, and protrude outward from a side surface of the housing. The bracket is supported by each of the legs. The vibration generator is attached to the bracket.

Toner conveying device with vibration generator attached thereto and image forming apparatus including the same

A static eliminating device includes a light guide body formed in a bar shape and attached to a drum frame, and a light source. The light source is arranged at one end side in a longitudinal direction of the light guide body. The light guide body includes a plurality of reflection parts and an attachment part. The plurality of reflection parts is arranged in parallel in the longitudinal direction within a range at the other end side from a start position spaced a predetermined distance from one end in the longitudinal direction. The attachment part is arranged between one end in the longitudinal direction and the start position to act as a start point of thermal deformation in the longitudinal direction. The attachment part is composed of two protrusions to interpose an edge of a positioning hole provided in the drum frame at one end side in the longitudinal direction.

Static eliminating device and image forming apparatus

An image forming apparatus includes a groove, an exposure device and an adjustment member. In the groove, an end portion of a rotation shaft of a photosensitive drum is inserted. The exposure device is configured to emit a laser light on the photosensitive drum to form an electrostatic latent image. The adjustment member is configured to shift the end portion of the rotation shaft in a direction other than a vertical direction in the groove to adjust a skew of the laser light.

Image forming apparatus including exposure device which forms electrostatic latent image on photosensitive drum

An image forming apparatus includes a photosensitive drum, an exposure device, a supporting member and a main adjustment member. The photosensitive drum is provided for each of colors forming a color image. The exposure device is configured to emit a laser light on each of the photosensitive drums to form an electrostatic latent image. The supporting member is configured to support end portions of rotation shafts of all the photosensitive drums. The main adjustment member is configured to shift the supporting member in a vertical plane to adjust a skew of the laser light.

An image forming apparatus includes a groove, an exposure device and an adjustment member. In the groove, a rotation shaft of a photosensitive drum is inserted. The exposure device is configured to emit a laser light on the photosensitive drum to form an electrostatic latent image. The adjustment member is configured to shift the rotation shaft vertically in the groove to adjust a skew of the laser light.

Image forming apparatus including photosensitive drum exposed by exposure device

An image forming apparatus includes a transfer belt rotating in a rotational direction, photosensitive drums, primary transferring parts, static eliminating parts and cleaning parts. The static eliminating part is arranged between the primary transferring part and the cleaning part, and includes a light guide body and a light source arranged at one end side of the light guide body. The static eliminating part irradiates upstream and downstream sides from the light guide body in the rotational direction with the static eliminating light. The image forming apparatus comprises a first light shading part and/or a second light shading part. The first/second light shading part is arranged between the photosensitive drum at a downstream/upstream side from the light guide body in the rotational direction and the light guide body to adjust pre-transfer/post-transfer static eliminating light quantity from the light guide body to the downstream/upstream side photosensitive drum.

A toner guide member includes a toner discharge port that is located above and faces a toner introduction port of a waste toner container, and the toner guide member forms, in its inside, a passage of waste toner from an end portion of a drum cleaning device to a toner discharge port. A first paddle conveyance member including a plurality of first blade portions rotates in a first rotation direction in the toner guide member. A second paddle conveyance member including a plurality of second blade portions rotates in a second rotation direction that is opposite to the first rotation direction, at a position lower than the first paddle conveyance member. A pivotal trajectory of the plurality of first blade portions partially overlaps with a pivotal trajectory of the plurality of second blade portions.

A developing device includes a housing, a developing roller, a developer conveying section, and a conveying screw. The developing roller includes a stationary magnet, and a sleeve rotatable around the stationary magnet. The developing roller faces a photoconductive drum. The developer conveying section is disposed below the developing roller for circularly conveying developer therein. The conveying screw conveys developer to supply developer to the developing roller. The stationary magnet includes a separation pole for producing a magnetic field that causes separation of developer from the sleeve. The housing includes a standing wall disposed downstream of the developing position in a rotational direction of the sleeve and facing the developing roller. The standing wall is formed with at least one opening that faces the separation pole in a horizontal direction. The developing device further includes at least one filter section covering the at least one opening.

Developing device and image forming apparatus including the same

A toner container includes an elongated container main body, a first toner storage portion provided in one side of the container main body in its longitudinal direction, a first rotation member rotatably provided in the first toner storage portion, a second toner storage portion provided in the other side of the container main body in the longitudinal direction, and a second rotation member rotatably provided in the second toner storage portion. The container main body includes a flat plate-like lid member closing opening portions of a first housing of the first toner storage portion and a second housing of the second toner storage portion. First and second bearing portions rotatably supporting a first end portion of a first rotation shaft of the first rotation member and a second end portion of a second rotation shaft of the second rotation member are provided on an inner surface of the lid member.

Toner container, image forming apparatus

A toner container includes a first rotation member rotatably provided in a container main body, a stirring member rotatably provided in such a way as to be parallel to the first rotation member, a lid member closing an opening portion of the container main body, a first bearing portion provided on an inner surface of the lid member and rotatably supporting a first end portion of a first rotation shaft of the first rotation member, a stirring bearing portion provided on the inner surface of the lid member and rotatably supporting a lid-side end portion of a stirring rotation shaft of the stirring member, a storage concave portion formed on the lid member and recessed from an outer surface of the lid member inward, and a transmission mechanism provided in the storage concave portion to transmit a rotation of the first rotation shaft to the stirring rotation shaft.

An image forming apparatus includes a toner container storing toner, and an attachment portion configured to support the toner container in an attachable/detachable manner. The toner container includes a plurality of fixed terminals that are fixed to a facing surface that is a side surface located on one side in an attachment/detachment direction of the toner container with respect to the attachment portion, the facing surface facing the attachment portion when the toner container is attached to the attachment portion. The attachment portion includes a terminal support portion and a plurality of elastic terminals that are provided on the terminal support portion, elastically contact and electrically connect with the fixed terminals respectively, and include a first ground terminal. The elastic terminals project from the terminal support portion toward the facing surface. The first ground terminal is longer than the other elastic terminals in projection length.

Image forming apparatus including toner container, and toner container

A developing device of the present disclosure includes a developing roller, a toner supply roller, a regulation blade, a casing, a toner receiving support member, a toner receiving member, a vibration generation unit, and a vibration inhibition member. The toner receiving support member is disposed in the casing so as to be opposed to the developing roller or the toner supply roller in an area between the regulation blade and an image carrier. The toner receiving member has a toner receiving surface that receives toner dropping from the developing roller, and is supported so as to be swingable about an end edge thereof on a toner supply roller side as a fulcrum. In a state where the toner receiving member is not vibrating, the vibration inhibition member is in contact with each of both end portions of the toner receiving surface in a longitudinal direction thereof.

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Osaka, Japan

Teruhiko Nagashima