Canon Kabushiki Kaisha

Sony Corporation

Tetsuya Sano

Hideo Nanataki

Atsuyoshi Abe

Yuki Nishizawa

Takashi Nomura

Takao Kume

Hiroshi Mano

Koichi Tanigawa

Kazushige Sakurai

Satoru Inami

Hiroki Kisu

Hiroshi Sato

Akira Kato

Masaki Ojima

Takaaki Tsuruya

Minoru Hayasaki

Tomoaki Nakai

Junichi Kato

Michio Uchida

Akimichi Suzuki

Kouichi Suwa

Takashi Yano

Takashi Kenmoku

Noriaki Sato

Hiroshi Hagiwara

Akira Kuroda

Ken Nakagawa

Seiji Yamaguchi

Toshiyuki Takahashi

Akihiko Uchiyama

Aoji Isono

Kenta Kamikura

Tsutomu Shimano

Kazuhisa Kemmochi

Kohei Matsuda

Hikaru Osada

Atsutoshi Ando

Hiroaki Ogata

Takahiro Inoue

Kenji Kanari

Taku Fukita

Keisuke Abe

Makoto Fukatsu

Takeshi Kawamura

Yuzo Seino

Kenji Takagi

Yasuo Yoda

Masaki Shimomura

Yasunari Kobaru

Masao Umezawa

Yozo Hotta

Michihito Yamazaki

Tohru Saito

Shuji Moriya

Shigeto Tamura

Hiroki Eguchi

Masatake Usui

Kentaro Yamashita

Hideki Kotsuka

Erika Asano

Katsuhito Shiratori

Kiyofumi Nakane

An image forming apparatus includes an image forming portion, a fixing portion configured to heat the toner image formed on the sheet by the image forming portion and fix the toner image to the sheet, a folding portion configured to fold the sheet having passed through the fixing portion such that a surface of the sheet to which the powder adhesive is applied is inside, and a bonding portion configured to heat the sheet folded by the folding portion and bond the sheet by the powder adhesive. A relationship of Tmax1>Tmax2 is satisfied, where Tmax1 (° C.) is a highest temperature of the powder adhesive when being heated by the fixing portion and Tmax2 (° C.) is a highest temperature of the powder adhesive when being heated by the bonding portion.

Image forming apparatus

A fixing device to fix a toner image formed on a recording medium to the recording medium includes a rotating member, a guide member, a holding member, and a roller. The roller contacts with an outer surface of the rotating member and forms a fixing nip portion together with the guide member between the rotating member and the roller. The fixing device fixes the recording medium toner image to the recording medium while pinching and conveying the recording medium in the fixing nip portion. The guide member is pivotable relative to the holding member about a pivot point that is a shaft substantially perpendicular to a surface of the fixing nip portion. When the rotating member slides on the guide member, the guide member pivots due to a force received from the rotating member so that alignment of the guide member with respect to the holding member is corrected.

Fixing device

A toner comprising a toner particle, wherein the toner particle includes a binder resin, where a volume resistivity &#x3a9;&#xb7;cm of an unfixed solid image on a recording material on which the solid image has been formed using the toner at a toner laid-on level of 0.4 mg/cmis denoted by Tv, and a volume resistivity &#x3a9;&#xb7;cm of the solid image after fixing by applying heat and pressure to the recording material is denoted by Fv, Tv/Fv&#x2265;8 is satisfied.

Toner

An image forming apparatus includes a fixing device, a temperature sensor that detects a temperature of an end of the fixing device, and a blower unit that supplies air to the end of the fixing device to cool the end of the fixing device. In addition, a processor circuit is configured to control a cooling level by the blower unit in accordance with the temperature of the end of the fixing device detected by the temperature sensor, to predict, based on a parameter depending on the cooling level, a discharge amount of ultra fine particles that are discharged from the image forming apparatus, and to control an image forming operation by the image forming apparatus such that the discharge amount of ultra fine particles is reduced in accordance with the discharge amount predicted by the processor circuit.

Image forming apparatus having a processor circuit that controls an amount of discharge of ultra fine particles discharged from the image forming apparatus, and related method

A cylindrical fixing member for use with a fixing device includes a heat generating layer and an electrode layer contacting the heat generating layer. The electrode layer is smaller in volume resistance value than the heat generating layer. The electrode layer is formed in a helical shape so that a helical axis thereof extends in a direction along a generatrix direction of the fixing member. One end and the other end of the electrode layer are electrically open.

Cylindrical fixing member, fixing device and image forming apparatus

In an image forming apparatus, a fixing condition such as a target control temperature of a heater is changed depending on whether a first resistance heating element and a second resistance heating element of the heater are connected in series or in parallel such that a similar fixing performance is achieved regardless of whether the first resistance heating element and the second resistance heating element are connected in series or in parallel.

A circumferential length of a belt is measured within a short period of time. A plurality of marks is provided on a belt. Distances between the marks are set to be all different from each other. The distance between the marks is set to allow the mark to be identified by measuring a period of time between the detection of one mark and that of the next mark even if the length of the belt is changed to some degree by the expansion of the belt or the like. Then, a period of time between the identified mark and the next mark is accurately measured. The total circumferential length of the belt is measured based on the results of measurement.

Image forming apparatus having a mechanism for detecting a mark on a belt

A cooling device for an acoustic apparatus includes a cooling fan that is turned on and off, and adjusted in quantity of airflow in accordance with an apparatus temperature, wherein when the apparatus temperature is lower than a value requiring immediate cooling, and when an audio output is in a mute state, the cooling fan is not changed in operating state.

Cooling device and method for acoustic apparatus

An image heating apparatus for heating an image formed on a recording material, includes a heating member; a flexible member movable in contact with the heating member; an elastic roller for forming a nip with the heating member with the flexible member interposed therebetween; wherein a pressure in the nip increases to a maximum peak toward downstream substantially without decreasing with respect to a moving direction of the recording material, wherein the heating member is disposed upstream of the maximum peak portion with respect to the moving direction of the recording material.

Image heating apparatus with nip portion pressure increasing downstream

An image heating device for heating an image formed on a recording material is provided which has a heating member; an excitation coil for generating a magnetic field to induce an eddy current in the heating member; a temperature detecting member for detecting a temperature of the heating member, the temperature detecting member being arranged at a position in opposition to a heat generation area of the heating member; and an insulating holder that holds the temperature detecting member.

Image heating device having excessive temperature rise prevention function

An image heating apparatus includes a first rotatable member, a second rotatable member contacting the first rotatable member, wherein a recording material passes between the first rotatable member and the second rotatable member, and a heating unit for heating the first rotatable member and having a third rotatable member contacting a surface of the first rotatable member, wherein releasability of a surface of the third rotatable member is higher than releasability of a surface of the second rotatable member. Thus, the image heating apparatus heats an image forming on a recording material without contaminating an external heating apparatus.

Image heat apparatus with first and second rotatable members forming nip together with external heating rotatable member

A developing device including a housing, a developer bearing member rotatably provided in an opening portion of the housing, a developer containing chamber, and a developer supplying and removing member being in contact with the developer bearing member, and having the function of supplying a developer in the developer containing chamber to the developer bearing member and the function of removing the developer from the developer bearing member, wherein the developer bearing member is disposed above the developer containing chamber, and the developer supplying and removing member has the function of upwardly carrying the developer in the developer containing chamber.

Developing device with developer bearing member overlying developer containing chamber

An image heating device includes: a heating member having a heater that is in contact with a bearing member, which bears an image, and heats the image, a first temperature detecting member that is disposed above a surface of the heating member with a gap therebetween and detects a temperature of the heating member, a second temperature detecting member that is disposed in contact with the surface of the heating member and detects a temperature of the heating member and a controller for controlling a supply of a power to the heater on the basis of a detected output of the first and second temperature detecting members, wherein the controller controls the supply of the power to the heater on the basis of the detected output of the first temperature detecting member at the time of heating the image and controls the supply of the power to the heater on the basis of the detected output of the second temperature detecting member at a time of standby.

Image heating device with temperature sensors provided in sheet passing portion and non-sheet passing portion

An image heating apparatus has a first member; a second member slidable relative to the first member; a third member for forming a nip with the first member with the second member disposed therebetween, wherein a recording material carrying an image is nipped and red by the nip between the second member and the third member, a pressure control unit for controlling a pressure at the nip to set the pressure to a first pressure and a second pressure which is higher than the first pressure, wherein when the second member starts moving upon start of image heating operation, the control unit sets the pressure to the first pressure and then to the second pressure.

Image heating apparatus

Growing community of inventors

Mishima, Japan

Tetsuya Sano