Fuji Xerox Co., Ltd.

Fujifilm Business Innovation Corp.

Ayumi Noguchi

Norihiro Tamazawa

Shota Oba

Makoto Kanno

Seigo Shinozaki

Shinichi Kuramoto

Keisuke Kubo

Shigeru Inaba

Yoshiyuki Tominaga

Shinichiro Fujimori

Masaaki Yamaura

Kiyohito Horii

Kotaro Araki

Yoshitaka Nakajima

Takayuki Yamashita

Satoya Sugiura

Satoshi Shigezaki

Yuki Nagamori

Tomoyuki Yoshii

Masanori Kato

Yutaka Kiuchi

Mitsuo Yamamoto

Yoshinori Takahashi

Mikio Yamaguchi

Ryota Tomishi

Masaya Nakatsuhara

Masahiro Katahira

Takeshi Yasuda

An image forming apparatus includes an image holding unit that holds an image that is formed of a developer, the image being intended to be transferred onto a medium, and an image that is not intended to be transferred onto a medium, a transfer unit that transfers the image that is intended to be transferred onto a medium onto a medium, a removing unit that removes the image that is not intended to be transferred onto a medium from the image holding unit, and a forming unit that forms the image that is not intended to be transferred onto a medium onto the image holding unit by using a developer and that has a first forming mode for a first medium and a second forming mode for a second medium that has a transfer sensitivity lower than a transfer sensitivity of the first medium, the forming unit being configured to use a larger amount of the developer in formation of the image that is not intended to be transferred onto a medium in the first forming mode than in the second forming mode.

Image forming apparatus having a first forming mode for a first medium and a second forming mode for a second medium

An image forming apparatus includes an image carrier that carries an image, a developing unit that applies a developing voltage to develop an electrostatic latent image formed on the image carrier with a developer, a transfer unit that electrostatically transfers the image onto media of different types, and a development controller that controls a developing operation of the developing unit. The development controller has a first control mode for a first medium, and a second control mode for a second medium having a lower transferability than the first medium. In the first control mode, the developing unit applies the developing voltage according to a first developing condition. In the second control mode, the developing unit applies the developing voltage according to a second developing condition in which a developing property is reduced as compared with the first developing condition.

Image forming apparatus having a first control mode for a first medium and a second control mode for a second medium having a lower transferability than the first medium

An image forming apparatus includes: an image carrier configured to carry an image; a transfer unit configured to transfer the image to a medium; and a cleaner configured to remove deposits on a surface of the image carrier after passing through a position of the transfer unit, in which when a type of a medium to be used is a first medium, the cleaner improves an ability to remove the deposits from the image carrier as compared with a case where the medium to be used is a second medium having a lower transfer sensitivity than the first medium.

Image forming apparatus

A charging device includes: a charging roll configured to charge a photoconductor; a housing that houses the charging roll; and a heating unit that directly heats the housing or the charging roll. In the charging device, the heating unit may be disposed in contact with an outside or inside of the housing, and at least a part of the outside or inside of the housing may be covered with a thermally conductive member.

Charging device including a heater that directly heats a housing that houses a charging roll or the charging roll

A developing device includes: a container for accommodating developer, the container having an exhaust port; and a merging section where airflows directed from the interior of the container to the exhaust port join together.

Developing device and image forming apparatus with exhaust port for discharging air

A developing device includes an accommodating section that accommodates a developer; a developing section; a transporting section that is disposed below the developing section in a gravitational direction; a flow channel portion that extends from an inner side to an outer side of the accommodating section; a first wall portion that extends towards the transporting section at an end portion on an inner side of the flow channel portion; and a second wall portion that extends towards the transporting section at the end portion on the inner side of the flow channel portion, a distance from the second wall portion to an outer peripheral edge of the transporting section being greater than or equal to a distance from the first wall portion to the outer peripheral edge of the transporting section.

Developing device and image forming apparatus

A developing device includes: a container for accommodating developer, the container having an exhaust port and an opening; an air flow path having an inlet of air directed to the exhaust port and through which the air passes; a cylindrical rotation member disposed at the opening in the container and is rotated such that a portion thereof facing the interior of the container moves upward; a transport member that rotates about a rotation axis extending along the rotation member and transports the developer inside the container; and an attachment magnetic pole that is disposed inside the rotation member and that allows the developer transported by the transport member to attach to the rotation member. The inlet of the air flow path is located above the attachment magnetic pole in a top-bottom direction. The inlet is located farther from the attachment magnetic pole than the rotation axis of the transport member is in the horizontal direction.

A developing device includes a container that contains developer; a rotating body that rotates while carrying the developer and supplies the developer to a latent image formed on an image carrier; a channel through which air in the container is discharged out of the container; a first member that is positioned downstream of a position at which the developer is separated from the rotating body in a rotation direction of the rotating body and with which the developer separated from the rotating body comes into contact; and a second member that is positioned downstream of the first member in the rotation direction of the rotating body and with which the developer separated from the rotating body comes into contact.

Provided is a powder containing device including a powder container that contains powder, that has a first end which is closed, that has a second end which is opened, that includes a main body section and a tapered section which is disposed on the second end side from the main body section and has a diameter reduced as close to the second end side, and that has an inner circumferential surface on which a protruding ridge is formed to convey the powder to the second end side by rotating around a rotation axis extending in a direction in which the first end and the second end is connected, and a lid member that is provided with an outlet of the powder, is maintained in a non-rotating state, and causes the powder flowing from the opening to flow out from the outlet.

Powder containing device and image forming apparatus

A container for developer detachably mountable to an image forming apparatus body includes a container body, a discharge member, a resistive member, and a resistance reduction mechanism. The container body contains developer and is rotated when drive is transmitted from the image forming apparatus body. The discharge member supports the container body rotatable relative to the discharge member and has a discharge port through which the developer is discharged. The resistive member is brought into contact with the container body so as to apply resistance to the rotation of the container body. The resistance reduction mechanism changes a contact state between the resistive member and the container body so as to reduce the resistance between the resistive member and the container body when the container is mounted to the image forming apparatus body.

Image forming apparatus and container for developer

An image forming apparatus includes an accommodation container, a storage medium, and a controller. The accommodation container includes a rotational portion and outflow portion. The rotational portion accommodates a developer therein and has a helical-shaped transport section formed in an inner surface thereof. The outflow portion rotatably supports the rotational portion and has an outflow port through which the developer transported during rotation of the rotational portion flows out. The storage medium stores use state information of the developer accommodated in the rotational portion. The controller controls a driving source which drives the rotational portion. When a use state of the accommodation container for the developer is a use state which is set in advance, the controller intermittently drives the rotational portion by performing driving at a rotation angle of (n+&#xbd;)&#x3c0;&#xb1;18 degrees or less than 90 degrees and stopping.

Image forming apparatus having a rotational portion which accommodates a developer

A detachable body includes an opening portion, an opening and closing member, a sealing member, a sealing member, and a protrusion portion. The opening and closing member is movable between an open position and a closed position. The opening and closing member includes a facing portion that faces the opening portion with a gap when the opening and closing member is located at the closed position. When the opening and closing member is moved to the open position, the sealing member has a thickness that is thicker than a gap between the opening portion and the facing portion. When the opening and closing member is moved to the closed position, the sealing member elastically deforms to seal the opening portion. The protrusion portion protrudes from one of a frame portion around the opening portion and the facing portion toward the other.

Detachable body and image forming apparatus

A powder storage device includes a powder container that has an opening at one end, stores powder therein, and has, on an inner peripheral surface, a rib configured to transport the powder toward the opening with rotation of the powder container, a lid member that is configured to cover the opening, has an outflow opening through which the powder flows, and is held in a non-rotatable state, and a driving-force transmission member interposed between the powder container and the lid member and having a driving-force receiving portion penetrating the lid member in a rotation axis direction, the driving-force transmission member transmitting a rotating force to the powder container.

Rotatable powder storage container

A container for developer detachably mountable to an image forming apparatus body includes a rotating body that contains developer and is rotated about a rotational center when drive is transmitted from the apparatus body, a discharge member that supports the rotating body such that the rotating body is rotatable relative to the discharge member and has a discharge port through which the developer is discharged, an anti-leakage member that is disposed in one of the rotating body and the discharge member and suppresses leakage of the developer, and a compressing portion that has a first side and a second side farther from the rotational center than the first side, is disposed in the other of both, and is pressed against the anti-leakage member to compress the anti-leakage member such that a compressing amount is larger on the second side than on the first side.

An image forming apparatus includes: a developer container having a containing portion which contains developer and is rotated when a driving force is transmitted to the containing portion from an image forming apparatus body, a discharge portion that rotatably supports the containing portion and has a discharge port through which the developer is discharged, and a restricting member provided at the discharge portion and movable between a restricting position where the restricting member restricts rotation of the containing portion and a releasing position where the restricting member releases the restriction of rotation of the containing portion, the developer container being removably attached to the image forming apparatus body; and a releasing member that is supported on the image forming apparatus body and moves the restricting member to the releasing position when the developer container is attached to the image forming apparatus body.

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Kanagawa, Japan

Ayumi Noguchi