Fuji Xerox Co., Ltd.

Fujifilm Business Innovation Corp.

Mitsutoshi Hongo

Toshinori Sasaki

Kouichi Kimura

Atsushi Funada

Mizuki Sugino

Koichi Kimura

Katsumi Yamada

Masanori Kato

Yoshihisa Nakao

Shota Igawa

Makoto Kanno

Hideki Kuge

Daisuke Uchimitsu

Kei Tanaka

Yoshitaka Nakajima

Norio Ogawahara

Tatsuya Tamai

Sadayuki Tsujino

Mizue Sekine

Yoshihiro Hayashi

Takashi Matsubara

Takayuki Yamashita

Takashi Ochi

Takashi Ohashi

Keita Yano

Noboru Hirakawa

Toshimasa Toyama

An image forming apparatus, includes: an image forming unit that forms a toner image on a medium; a heating unit that is provided on a downstream side in a transport path from the image forming unit and that is configured to heat a medium being transported in a non-contact manner; a fixing unit that is provided on a downstream side in the transport path from the heating unit and fixes the toner image on the medium; a shielding unit to which force is applied so as to be inform a closed state in which the heating unit is shielded; and an open state forming unit configured to receive power supply to drive the shielding unit so as to form an open state in which the heating unit is opened, and maintain the open state while the power is being supplied.

Image forming apparatus including heater with movable shield

A fixing device includes: a heating unit configured to heat a medium to be conveyed along a conveyance path by radiation; and a shielding unit made of non-metallic material, the shielding unit being configured to form a shielding state in which radiation from the heating unit is shielded and a non-shielding state in which radiation from the heating unit is not shielded, in which the shielding unit being expanded in a direction intersecting the radiation in the shielding state and is stored in the non-shielding state.

Fixing device and image-forming apparatus

A developing device includes: a first transport member and a second transport member that are disposed in a first transport path and a second transport path provided at an upper side and a lower side in a gravitational direction and that transport a developer. The developing device also includes an ejecting path that is provided in the first transport path disposed at the upper side in the gravitational direction and that ejects an excess developer. The developing device includes a reverse helical section that is disposed in front of a support that supports the second transport member. The reverse helical section helically extends in a reverse direction relative to a helical section provided for circulating the developer, the developer being transported to the ejecting path by the reverse helical section.

Developing device and image forming apparatus having a reverse helical section

A developing device includes: a case in which a hollow transporting path is formed; a transporting member configured to transport a developer in the transporting path; a support portion fixed to an end portion of the case by a fastening member to support the transporting member at an end portion of the transporting path; and a cooling unit fixed by being sandwiched between the support portion and the case.

Developing device with transporting member and cooling unit fixed to a case

A developing device includes a first transport member and a second transport member that are respectively disposed in a first transport path and a second transport path arranged in a vertical direction and that transport developer so as to circulate the developer between the first transport path and the second transport path. The developing device includes a developing device body in which the first transport path and the second transport path are formed. The developing device also includes a developer discharging structure that discharges excess developer discharged from the first transport path to outside through the second transport path or through a space between an end portion of the second transport path and the developing device body.

Developing device and image forming apparatus with a developer discharging structure

Provided is a developing device having a first transport member and a second transport member that are disposed in a first transport path and a second transport path provided at an upper side and a lower side in a gravitational direction. The transport members transport a developer so as to cause the developer to circulate between the first transport path and the second transport path. A partition wall that separates the first transport path and the second transport path from each other and has an opening including an open-close member that opens and closes the opening.

Developing device and image forming apparatus having an opening and closing member in a partition between conveying members

A developing device includes a first transport member and a second transport member that are respectively disposed in a first transport path and a second transport path arranged in a vertical direction and that transport developer so as to circulate the developer between the first transport path and the second transport path; a developing member that is disposed to face the first transport path and that receives the developer from the first transport path; and a driving device that operates such that a relative speed ratio between a rotational speed of the developing member and a rotational speed of the second transport member is changeable.

Developing device and image forming apparatus with separately driven elements

A developing device includes a first transport member and a second transport member that are respectively disposed in a first transport path and a second transport path arranged in a vertical direction and that transport developer so as to circulate the developer between the first transport path and the second transport path; a developing member that is disposed to face the first transport path and that receives the developer from the first transport path; and a third transport member that is disposed in a third transport path through which the developer that has not been used by the developing member is collected and transported to the second transport path. A central shaft of the second transport member is disposed farther in a vertically upward direction than is a central shaft of the third transport member.

Developing device having a partition member and image forming apparatus

A belt-type transport device includes a belt, a pressure unit, a nip forming unit, a belt stretching roller, an inclination controller, a contact unit, and a support unit. The belt is an endless belt, has an outer circumferential surface and an inner circumferential surface, and is to be rotated. The pressure unit is in contact with the outer circumferential surface of the belt. The nip forming unit presses the belt against the pressure unit so as to form a nip through which a recording medium is to be transported. The belt stretching roller is disposed inside the belt and stretches the belt. The inclination controller controls inclination of the belt stretching roller. The contact unit is provided along a width direction of the belt and is in contact with the inner circumferential surface of the belt. The support unit supports the contact unit such that the contact unit is able to follow inclination of the belt which is changed due to the inclination of the belt stretching roller.

Belt-type transport device, fixing device, and image forming apparatus

An image forming apparatus includes a heating unit that heats a recording material, a contact member that is positioned upstream or downstream from the heating unit in a transport direction of the recording material and is in contact with the recording material, the contact member being configured in such a manner that a portion of the contact member that is in contact with the recording material moves with the recording material, a temperature detection unit that detects a temperature of the contact member, and a control unit that controls, based on a detection result obtained by the temperature detection unit, an output of the heating unit.

Temperature detection for a fixing system of an image forming apparatus

A heating device includes a conveying unit, a heating unit, a temperature detecting unit and a controller. The conveying unit conveys a recording material. The heating unit includes a plurality of heat sources which are disposed so that locations thereof are different from each other in a conveying direction of the recording material, and heats the conveyed recording material. The temperature detecting unit is positioned on an upstream side in the conveying direction of the recording material with respect to the plurality of heat sources, and detects a temperature of the heating unit. The controller controls one of the plurality of heat sources based on a detecting result obtained by the temperature detecting unit. The one of the plurality of heat sources is positioned on the upstream side in the conveying direction of the recording material.

Heating device and image forming apparatus

A preheating device includes two first inverting members disposed at different positions while obliquely intersecting a feeding direction of a continuous recording medium on which an unfixed image is formed, the first inverting members inverting the recording medium by passing a back surface of the recording medium, on which the unfixed image is not formed, therealong before a fixing operation, and at least one heating rotating body disposed at a position further on an outside than a side edge portion of the recording medium in the feeding direction to preheat the recording medium before the fixing operation by passing a portion of the back surface of the recording medium present between the two first inverting members so that the portion of the back surface is wound around the heating rotating body.

Preheating device, fixing system, and image forming apparatus

A preheating device includes a heating member that is capable of heating a continuous medium, and a movement unit that moves at least one of the continuous medium and the heating member in a direction in which the continuous medium and the heating member move relatively closer to each other or in a direction in which the continuous medium and the heating member move relatively away from each other. The movement unit moves at least one of the continuous medium and the heating member in the direction in which the continuous medium and the heating member move relatively closer to each other if predetermined heating conditions are satisfied, and the movement unit moves at least one of the continuous medium and the heating member in the direction in which the continuous medium and the heating member move relatively away from each other if the heating conditions are not satisfied.

Preheating device and image forming apparatus

A heating device includes a heating member body having a surface that is configured to contact a continuous medium; plural heat sources that are arranged in a width direction of the continuous medium and that are configured to increase a temperature of the heating member body; an electric power circuit that is configured to supply electric power to the heat sources in accordance with a width of the continuous medium; a heat transfer member that is disposed so as to face the heat sources and that extends in the width direction of the continuous medium; and an overheat prevention device that is disposed in contact with the heat transfer member and that is configured to stop supply of electric power from the electric power circuit if a temperature of the heat transfer member exceeds a predetermined temperature.

A guide mechanism for a connecting component guides a second connecting component when connecting a first connecting component and the second connecting component to each other. The guide mechanism includes a guide member and an urging member. The urging member urges the guide member and continues to contract until the second connecting component reaches a connection complete position. The guide member includes rotational shafts, inner guide pieces, and outer guide pieces. The rotational shafts are provided on both sides of the second connecting component. The inner guide pieces are rotated about the rotational shafts from first initial positions to first regulating positions. The outer guide pieces are rotated about the rotational shafts from second initial positions to second regulating positions such that the rotation of the outer guide pieces is coupled with the rotation of the inner guide pieces.

Growing community of inventors

Kanagawa, Japan

Mitsutoshi Hongo