Canon Kabushiki Kaisha

Other

Ist Corporation, Limited

Hideyuki Yano

Tadashi Furuya

Junji Araya

Akihiko Takeuchi

Hiroshi Sasame

Harumi Ishiyama

Hiroto Hasegawa

Harumi Kugoh

Yasushi Sato

Koichi Tanigawa

Yasumasa Ohtsuka

Masahiro Suzuki

Osamu Iwasaki

Hideo Nanataki

Seiji Mashimo

Masahiro Goto

Kazuhiro Funatani

Kazuo Kishino

Yasunori Chigono

Junichi Kato

Koichi Hiroshima

Takahiro Inoue

Kazuaki Ono

Takayasu Yuminamochi

Koichi Suwa

Masatake Usui

Katsuhiro Sakaizawa

Michio Uchida

Mahito Yoshioka

Shinichi Tsukida

Manabu Takano

Yasumasa Otsuka

Hideo Nanatani

Harumi Kugo

Makoto Takeuchi

Hiroshi Hashimoto

Kenji Watanabe

Masaaki Takahashi

Katsuhisa Matsunaka

Akihiko Uchiyama

Shunichi Masuda

Koji Sasaki

Akio Maruyama

Toshio Miyamoto

Kenichi Ogawa

Yasunari Watanabe

Atsuyoshi Abe

Yomishi Toshida

Yukihiro Ohzeki

Takashi Nakahara

Tetsuo Saito

Kenjiro Hori

Tomonori Shida

Haruo Fujii

Shoji Amamiya

Akio Noguchi

Katsuhiko Oba

Katsuhiko Nishimura

Motohide Shiozawa

Kazushige Nakamura

Takayuki Miyamoto

Satoshi Akiyama

Norio Hashimoto

Tatsunori Ishiyama

Takashi Shibuya

Noboru Kashimura

Yukihiro Ozeki

Yohji Tomoyuki

Toshio Yoshimoto

Kenji Nagata

Kenya Ogawa

Kazuhisa Maruyama

Shunichi Ebihara

Hisahiro Saito

Yoshimi Kuramochi

Yaomin Zhou

Fumitaka Aoki

Hirokazu Ikenoue

Masafumi Matsumura

Osamu Mukataka

Naoki Konishi

Zhou Yaomin

Kouji Sasaki

An image heating apparatus has a flexible rotatable member; a slidable member for sliding contact with an inner surface of the rotatable member; a back-up member for forming a nip with the slidable member with the rotatable member interposed therebetween, wherein a projection extended along a longitudinal direction of the rotatable member, and provided on such a portion of a sliding surface of the slidable member as is downstream of a center of the sliding surface with respect to a recording material feeding direction in which the recording material is fed, and wherein the projection is effective to provide a maximum pressure in a distribution, with respect to the recording material feeding direction, of pressure applied to the nip.

Image heating apparatus having recording medium conveying nip nonuniform in pressure distribution

An image heating apparatus according to the present invention includes a fixing sleeve, a guide member that is arranged in an inner circumferential section of fixing sleeve and rotatably holds the fixing sleeve, a pressure roller that press-contacts with the guide member through the fixing sleeve and forms a fixing nip, and heating unit that heating the fixing sleeve and heats paper conveyed in the fixing nip with the rotation of the fixing sleeve. Grease that increases slide property is applied to an interface between the fixing sleeve and guide member, and the surface roughness of at least an area of an inside surface of the fixing sleeve contacting with the above-described guide member is made to be 0.05 or more in an Rz value.

Image heating apparatus using flexible sleeve and sleeve thereof

An image forming apparatus and a self-diagnosis system suitable for grasping conditions relating to electrophotographic parameters of an engine in an image forming apparatus on the market, and for reducing customer complaints. The self-diagnosis system enables the electrophotographic parameters to be displayed and/or output, has a function of displaying the electrophotographic parameters by converting the electrophotographic parameters into indices other than physical quantities, the function of printing the electrophotographic parameters on an output sheet, and the function of enabling the electrophotographic parameters to be transferred to an external information apparatus by a communication device, and includes a device for transferring the electrophotographic parameters to a formatter through a video interface or from the formatter to a host computer, a computer in a service center, or the like via a communication line or the internet.

Image forming apparatus and self-diagnosis system

An object of the present invention is to provide an image forming apparatus that has an image bearing body for bearing a toner image, a conveying member for bearing and conveying a recording material, and a transferring member for transferring a toner image on the image bearing body to the recording material conveyed by the conveying member by the application of a voltage, wherein the transferring member has ion conductivity.

Image forming apparatus with transferring member having ion conductivity

In a fixing belt having at least a release layer and a metal layer formed of electroformed nickel, the electroformed nickel has, in its crystal texture, crystallites having an average size of 0.05 &mgr;m or more and 0.2 &mgr;m or less. This fixing belt has high durability, and an image heat fixing assembly using this fixing belt has high durability and high reliability and realizes low-energy heating by utilizing a heating element with a small heat capacity.

Fixing belt, and image heat fixing assembly

A laminate film showing good durability under pressure and heat application, and suitably used as a fixing film for toner image fixation, is provided. Such a laminate film is provided by forming a polyimide resin layer on a metal base layer at a controlled imidation percentage of 70-93%.

Laminate film, fixing film and image heating apparatus using same

To provide a high-durable fixing belt and an image fixing apparatus with high durability and high reliability for using a heating body needing a small amount of thermal capacity to enable heating with low energy. The fixing belt according to the present invention includes at least a release layer and a metal layer made by electroforming nickel, in which the electroformed nickel has a crystal orientation ratio 1 /1 of 3 or more, in which a surface(200) is preferentially grown, and a microvickers hardness of 280 to 450.

Fixing belt and image heating and fixing apparatus

An image forming apparatus including a plurality of image bearing members for bearing respective color images, and a transfer material bearing member for bearing and conveying a transfer material, wherein, at transfer positions where the image bearing members are contacted with the transfer material bearing member, the images on the image bearing members are successively transferred electrostatically onto the transfer material born on the transfer material bearing member in a superimposed fashion, and wherein a transfer material conveying path defined by the transfer material bearing member including the transfer positions is protruded toward a side opposite to a side on which the image bearing members are provided.

Image forming apparatus

An image forming apparatus has a transfer material bearing member with a first image bearing member and a second image bearing member sequentially disposed along a conveying direction of the transfer material borne by the transfer material bearing member. A first voltage applying device and a second voltage applying device are positioned to apply voltages to the transfer material bearing member so that the images on the first image bearing member and the second image bearing member are sequentially superimposed and transferred onto the transfer material borne by said transfer material bearing member. A detector is located to detect a current flowing through the transfer material bearing member when a predetermined voltage is applied to an area, on which the transfer material is borne, of the transfer material bearing member before an image transfer is started, and a controller controls the first voltage and the second voltage based on a detected result of the detector.

Image forming apparatus with current detector and voltage control based on detection result

An image forming apparatus includes a plurality of image bearing members for respectively bearing toner images, a moving member, a plurality of transfer devices for electrostatically transferring a toner image on each of the image bearing members onto the moving member or a transfer material borne by the moving member, a plurality of collecting devices for respectively collecting toner on each image bearing member, a selecting device for selecting an image bearing member to which toner on the moving member is to be transferred to the plural image bearing members.

Image forming apparatus with plural transfer means and selecting mechanism for selecting from among a plurality of image bearing members

An image forming apparatus has an image bearing member, a charger for charging the image bearing member image forming means for selectively erasing charge on the image bearing member to thereby form an electrostatic image, and a developing device for developing the electrostatic image. The developing device includes a developing roll contacting with the image bearing member and is capable of having a developing bias applied thereto and contacting and spacing device for contacting and spacing the developing roll with respect to the image bearing member. The contacting and spacing device contacts the developing roll having the developing bias applied to the area thereof charged by the charger with the image bearing member at a start of image formation.

Image forming apparatus which a developing roll is capable of contacting with and spacing from

When a cleaner is included exclusively for cleaning a transfer/transport belt to remove toner therefrom, the structure of an image forming apparatus becomes complex and the costs thereof increase. The present invention attempts to remedy this situation. Specifically, a difference between a peripheral speed relative to the transfer/transport belt to be set for cleaning and a peripheral speed relative to photosensitive drums to be set therefor is made larger than that between peripheral speeds to be set for ordinary image formation. Because of this constituent feature, unnecessary toner on the transfer/transport belt is efficiently transferred onto the photosensitive drums on a stable basis for a short period of time.

Self-cleaning image forming apparatus

A charging apparatus includes a first charging member of being supplied with a voltage to charge a member to be charged. A first charging member has magnetic particles in the form of a magnetic brush contactable to the member to be charged. A second charging member charges a region of the member to be charged corresponding to an end portion, in a longitudinal direction of the charging member, of the magnetic particles, wherein by the second charging member, the region has a potential of the same charge polarity of the voltage when the region reaches a charging position of this first charging member.

Charging apparatus with first and second charging members

A charging apparatus includes a member to be charged having a charge retaining layer for retaining a charge and an electroconductive base. A charging member capable of being supplied with a voltage is provided to charge the member to be charged. The charging member includes magnetic particles in the form of a magnetic brush contactable to the member to be charged, wherein the member to be charged has an electroconductive member electrically insulated from the electroconductive base in a region corresponding to an end portion, in a longitudinal direction of the charging member.

Charging member, charging device and image forming apparatus wherein deposition of magnetic particles to a member to be charged is effectively prevented

A charging device for charging a member to be charged includes a charging member to which a voltage is applicable to charge the member to be charged, the charging member having a magnetic brush of magnetic particles contactable to the member to be charged, and a supporting member for supporting the magnetic particles; wherein the the magnetic particles have a resistance value of 1.times.10.sup.4 -1.times.10.sup.7 (Ohm) when 1-1000(V) is applied thereto.

Charging device using a magnetic brush contactable to a member to be

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Yokohama, Japan

Hideyuki Yano