Fuji Xerox Co., Ltd.

Fujifilm Business Innovation Corp.

Hiroki Ando

Satoshi Honobe

Tsuneo Fukuzawa

Toshiyuki Matsui

Tomonori Sato

Hirofumi Iida

Fumiaki Maekawa

Keishi Araki

Mikio Yamaguchi

Ichiro Kawahara

Tomokazu Kurita

Satoshi Mizoguchi

Hiroki Oka

Toshie Nakamoto

Shigeru Tanaka

Takayuki Yamashita

Yukihiro Ichiki

Kazuaki Iikura

Yoshiyuki Takashima

Hideki Moriya

Takashi Akaike

Junichirou Sameshima

Yuzo Ichikawa

Akihiro Nonaka

Masao Ohmori

Masaru Agatsuma

Hidekazu Amamoto

Shinya Makiura

Junichi Ozawa

Taro Mitsui

Tomohiro Ono

Kazunori Shindo

Satoru Ishii

Hirofumi Hamada

Yoshifumi Shoji

Yuichi Sono

Masayuki Kono

Shin Honda

Kanji Shintaku

Yuki Terakado

Toshihiro Maruta

Toshiyuki Suto

Shota Nakazawa

An image forming apparatus includes a transfer body that rotates and transfers a transferred image to a target transfer body at a transfer position, plural image holding members that rotate together with the transfer body at different positions along a rotation direction of the transfer body while outer peripheral surfaces of the image holding members come into contact with the transfer body, the image holding members on which a charge erasing operation is sequentially performed after images held on the outer peripheral surfaces sequentially transferred to the transfer body, and in which the charge erasing operation on all the image holding members has been ended, and then rotations of all the image holding members are stopped, a first charge erasing unit that erases charges of an outer peripheral surface of at least one image holding member other than a most downstream image holding member disposed on a most downstream side of the rotation direction with respect to the transfer position, among the plural image holding members, and a second charge erasing unit that erases charges of an outer peripheral surface of the most downstream image holding member and has a charge erasing time shorter than a charge erasing time of the first charge erasing unit.

Image forming apparatus

An image forming apparatus includes an image carrier that carries an image to be transferred onto a recording medium, a charging member in contact with the image carrier, the charging member that charges the image carrier, an erase unit that erases charge on the image carrier, a current detector that detects a current flowing to the charging member; a forming unit that forms a charged region on a surface of the image carrier, and forms an erased region on the surface of the image carrier using the erase unit, and a state acquisition unit that acquires a deterioration state of the charging member based on (i) a first current flowing in response to applying a voltage from the charging member to the erased region and (ii) a second current flowing in response to applying a voltage from the charging member to the charged region.

A charging device includes: a charging member that is rotatable and has a peripheral surface to be in contact with a charging target and to which a voltage is to be applied for charging the charging target; a removing member that includes a core and a removing material spirally wound one to less than two times around the core and rotates and comes into contact with the charging member to remove an unnecessary material from the peripheral surface of the charging member; and a detecting unit that detects a current flowing between the charging member and the removing member.

Charging device, image forming structure, and image forming device

A photoconductor unit includes a photoconductor and an electrode. The photoconductor includes a base member that is cylindrical and has a hardness that decreases with increasing distance from a first end toward a second end in an axial direction, and a photosensitive layer formed on an outer peripheral surface of the base member. The electrode is in contact with an inner peripheral surface of an open end portion of the base member at the first end.

Photoconductor unit, process cartridge, and image forming apparatus

An image forming apparatus includes: a transport member that transports a medium; a storage that is disposed below the transport member in a gravitational direction, and that stores the medium which is delivered by the transport member and falls into the storage; a supporter that is provided in the storage, and that has an upper end disposed below the transport member in a gravitational direction, and that allows the medium to be stored with a front end of the medium in a discharge direction matching a lower end of the medium in a gravitational direction; and a guidance member that is disposed in the supporter with the medium interposed between the guidance member and the supporter, and that guides the medium which falls to the supporter.

Photoconductor unit, process cartridge, image forming apparatus, and method for manufacturing photoconductor unit

A transport member includes: a shaft portion having a linear portion that is linearly disposed along a linear section of a transport path, and a curved portion that is curvedly disposed along a curved section of the transport path; and screw blades that are spirally formed on an outer circumferential surface of the linear portion and the curved portion, and that transport a powder material by rotation of the shaft portion in one of axial directions of the shaft portion, the screw blades having a small-diameter portion which has an outer diameter smaller in the curved portion than in the linear portion.

Transport member, transport device, and image forming device

An applying device includes an applying member and a contact member. The applying member applies voltage to an image bearing member and has an elastic layer and an endless surface layer. The elastic layer is disposed facing the image bearing member, is rotatable about a rotation axis, and is composed of a foam material. The surface layer surrounds an outer periphery of the elastic layer, is supported by the elastic layer in a non-bonded state, and is rotatable together therewith. The contact member comes into contact with the surface layer at an upstream side, in a rotational direction of the applying member, relative to an imaginary line segment connecting a rotation axis of the image bearing member and the rotation axis of the applying member, so as to apply tension to the surface layer at a contact position between the image bearing member and the applying member.

Applying device and image forming apparatus

Provided is a cleaning member, including a shaft material that rotates about an axial center, and a cleaning material that is spirally wound around the shaft material, is driven to be rotated by a rotating member to be cleaned, cleans the member to be cleaned, and has the number of windings which is equal to or greater than 1 and less than 2 in a cleaning area where the member to be cleaned is cleaned.

Cleaning member having a cleaning material spirally wound around a shaft material, charging apparatus, and image forming apparatus

Provided is an image forming apparatus including an image holder that is provided to be rotatable, and a charging member that includes a charging member main body and a cover member, in which an outer circumferential surface of the cover member is disposed to be in contact with the image holder, and that charges the image holder, wherein a circumferential speed of one member of the rotating image holder and the rotating charging member main body is greater than a circumferential speed of the other member, and wherein the cover member moves to follow a movement of the one member at a contact portion where the cover member and the image holder come into contact with each other, and a portion of the cover member that is positioned on an upstream side of the contact portion is drawn toward a downstream side.

Image forming apparatus and image forming unit

Provided is an image forming apparatus including an image holder that is mounted at a predetermined mount position, a charging member that charges the image holder, a cleaning member that cleans the charging member, a holding member that holds the charging member and the cleaning member, includes a mount section on which the cleaning member is mounted, is urged toward the image holder side, and recedes when the image holder is mounted at the predetermined mount position, and a drop-out prevention section that is disposed at a position facing the mount section which is included in the holding member at a receding position and that prevents the cleaning member from dropping out from the mount section.

A cylindrical member includes aluminum, and has an average area of crystal particles of an outer circumferential surface which is smaller than an average area of crystal particles of an inner circumferential surface.

Cylindrical member, cylindrical member for image forming apparatus, electrophotographic photoreceptor, image forming apparatus, and process cartridge

A charging device includes a charging member in contact with or adjacent to a charged body, a charge housing that holds the charging member, bearing members that rotatably support the charging member, at least one of the bearing members being a conductive bearing member, pressing members that press the bearing members toward the charged body, at least the pressing member for the conductive bearing member being formed of a conductive material, a platelike power supply member in contact with the pressing member for the conductive bearing member, and positioning mechanisms that position the bearing members. The power supply member has a platelike extending portion. The positioning mechanism provided on a power supplied side of the charging member includes a positioning portion provided in the conductive bearing member, and a positioned portion provided in the extending portion. The positioned portion engages with the positioning portion when the extending portion elastically deforms.

Charging device, image forming assembly and image forming apparatus using the charging device

An image forming apparatus includes an image forming unit that forms, on an image bearing member, an image for adjusting operations of the image forming apparatus, a container that contains toner removed from the image bearing member, and a controller that controls formation of the image for adjusting the operations of the image forming apparatus so that after an amount of toner contained in the container reaches a threshold value, an amount of toner removed from the image bearing member and to be contained in the container is reduced to less than before the amount of toner contained in the container reaches the threshold value.

Image forming apparatus and image forming method

An image-forming apparatus includes: a plural image-holding members, each image-holding member holding an image and being rotatable around a rotation shaft; a frame member that at least partially defines a space for accommodating the plural image-holding members therein; a cover provided to the frame member to open and close the space with respect to an outside, an inner side of the cover being formed with rotation shaft insertion holes each for receiving an end portion of the rotation shaft of a corresponding one of the image-holding members accommodated in the space; a supporting shaft that supports the cover such that the cover is pivotable with respect to the frame member, the supporting shaft being inserted into a supporting shaft insertion hole provided to the frame member or to the cover, the supporting shaft insertion hole being elongated in a direction having a vertical component when the cover closes the space; and a positioning mechanism that positions the cover with respect to the frame member when the cover closes the space, the positioning mechanism including at least two projections that project from one of the frame member and the cover, and that are spaced apart from each other in a direction of an axis of the supporting shaft, and projection insertion holes provided to the other one of the frame member and the cover to receive corresponding projections when the cover closes the space.

Image-forming apparatus

Growing community of inventors

Kanagawa, Japan

Hiroki Ando