By Intermediate Transfer Member Patents (Class 399/308)
  • Patent number: 10706526
    Abstract: This substance adhesion simulation system includes an input unit for inputting a model of a device, and information of a presence state of a substance which may be able to adhere to the device, and a processing unit which estimates an adhesion state of the substance to the device by using the information, which is input to the input unit, and the substance is in a liquid state, a gas state, a mist state, a powder state, a dust state, or a state combining the liquid state and the mist state.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: July 7, 2020
    Assignee: FANUC CORPORATION
    Inventor: Toshiya Takeda
  • Patent number: 10609251
    Abstract: An image forming apparatus includes a transferor, a first detector to detect an image formed on the transferor, a second detector to detect an image formed on a recording medium, and circuitry. The circuitry is configured to generate first gradation correction data based on a detection result obtained by the first detector, generate second gradation correction data based on a detection result obtained by the second detector, and control gradation correction for the image formed on the recording medium using the first and second gradation correction data. Further, the circuitry is configured to prioritize one of the first and second gradation correction data based on at least one of a characteristic of the recording medium and a characteristic of the image in the gradation correction during consecutive printing in which images are consecutively formed on recording media.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: March 31, 2020
    Assignee: Ricoh Company, Ltd.
    Inventor: Kazuaki Kamihara
  • Patent number: 10569534
    Abstract: A system printing comprises: a movable intermediate transfer member in the form of a flexible, substantially inextensible, belt guided to follow a closed path, an image forming station for forming an ink image, a drying station for drying the ink image to leave an ink residue film, first and second impression stations spaced from one another in the direction of movement of the belt, each impression station comprising an impression cylinder for supporting and transporting a substrate and a pressure cylinder for urging the belt against the substrate supported on the impression cylinder, and a transport system including a perfecting system for selectively inverting the substrate during transportation between the two impression stations; and a treatment station situated between the second impression station and the image forming station, the treatment station configured to apply a treatment agent comprising polyethylenimine (PEI) to pre-treat the belt.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: February 25, 2020
    Assignee: LANDA CORPORATION LTD.
    Inventors: Aharon Shmaiser, Benzion Landa, Sagi Moskovich, Nir Zarmi, Yehuda Solomon
  • Patent number: 10527972
    Abstract: An intermediate transfer belt includes, on a surface in contact with a photosensitive drum and a cleaning blade, a plurality of grooves formed along a moving direction of the intermediate transfer belt in a width direction which intersects the moving direction of the intermediate transfer belt. Further, the intermediate transfer belt includes a plurality of first regions in which adjacent grooves in the width direction are arranged at a predetermined interval, and a second region which is positioned between the plurality of first regions and in which an interval between adjacent grooves in the width direction is different from the predetermined interval. The second region is arranged outside, in the width direction of the intermediate transfer belt, a range in which a patch toner is to be formed in concentration correction.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: January 7, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuji Saito, Ken Yokoyama, Noriaki Egawa, Koujirou Izumidate, Masatsugu Toyonori
  • Patent number: 10401752
    Abstract: An image forming apparatus includes an intermediary transfer member; a first image forming portion including a first developing device and a detecting portion; a second image forming portion including a second developing device; a contact-and-separation mechanism capable of setting a first state and a second state; and an executing portion capable of executing an operation in a first monochromatic mode in the first state and capable of executing an operation in a second monochromatic mode in the second state. When a toner amount in the first developing device is below a predetermined amount on the basis of the detecting portion during an image forming operation for continuously forming the black image in the operation in the first monochromatic mode, the executing portion continuously executes the image forming operation in the second state.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: September 3, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Matsumoto, Kiyoharu Kakomura, Masahiro Makino
  • Patent number: 10221016
    Abstract: A conveyor belt assembly may include a conveyor belt having an elastomeric layer, a chain adjacent a side edge of the conveyor belt and a flexible bridge extending between and connected to the chain and the conveyor belt along the side edge. The chain, bridge and conveyor belt may be driven to revolve by a sprocket engaging the chain.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: March 5, 2019
    Assignee: Imperial Technologies, Inc.
    Inventor: Richard W. Tschantz
  • Patent number: 10146165
    Abstract: An image forming apparatus is operable in a first mode in which a control unit is in a rest state and a second mode in which electric power is supplied to the control unit. The image forming apparatus changes the mode of the operation to the second mode of an operation in response to change of detection of a detecting portion from presence of the sheet on a manual feeding tray to absence thereof during execution of the operation in the first mode with a pressing mechanism being in the second position, and then in response to receipt of input of a predetermined instruction about an image forming operation by a receiving portion in the second mode, the control unit controls the moving mechanism so that the pressing mechanism moves from the low pressure position to a nip-forming position.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: December 4, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keisuke Yoshida, Takeshi Fukuda
  • Patent number: 10120317
    Abstract: An image forming apparatus is operable in a first mode in which a control unit is in a rest state and a second mode in which electric power is supplied to the control unit. The image forming apparatus changes the mode of the operation to the second mode of the operation in response to detection of putting of the sheet on the manual feeding tray during execution of the operation in the first mode with the pressing mechanism being in the second position, and then in response to receipt of input of a predetermined instruction about an image forming operation by a receiving portion in the second mode, the control unit controls the moving mechanism so that the pressing mechanism moves from the low pressure position to a nip-forming position.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: November 6, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Fukuda, Keisuke Yoshida
  • Patent number: 9958812
    Abstract: The intermediate transferring belt is to be mounted in an electrophotographic image-forming apparatus. The intermediate transferring belt includes the following, in sequence, a substrate; an elastic layer; and a surface layer. The surface layer has an elongation of 5% or more and a stress of 5MPa or more at an elastic limit determined by a stress-strain curve obtained according to JIS K7161.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: May 1, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Eiichi Yoshida, Sadaaki Sakamoto, Takayuki Suzuki, Ito Koga
  • Patent number: 9904216
    Abstract: Provided is an intermediate transfer member used in an electrophotographic image forming apparatus having a unit of primary-transferring a toner image carried on an electrostatic latent image carrier to an intermediate transfer member, and then secondary-transferring the primary-transferred toner image onto a transfer material from the intermediate transfer member, wherein a surface of the intermediate transfer member has a hardness in the range of 150 to 350 MPa, and an elastic modulus in the range of 200 to 600 MPa, which are measured by a nano indentation method, and also has a hardness of 0.5 to 2.0 MPa specified in terms of universal hardness.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: February 27, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Eiichi Yoshida, Sadaaki Sakamoto, Takayuki Suzuki, Ito Koga
  • Patent number: 9836674
    Abstract: A control device includes an image-formation command section and a first reception section. The image-formation command section commands an image forming section to form multiple latent images based on one input image onto an image bearing member in accordance with different light emission patterns by using a light source including multiple light emitting members, develop the latent images, and output the multiple developed images to a medium. The first reception section receives a designation by a user with respect to one of the multiple light emission patterns after the multiple images are output. Each light emission pattern indicates which of the multiple light emitting members included in the light source is to emit light.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: December 5, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Kenjo Nagata
  • Patent number: 9720353
    Abstract: The present invention relates to an electrophotographic intermediate transfer member that, even if an image is repeatedly and continuously transferred, can retain its transfer performance and can obtain an excellent image for a long time. The electrophotographic intermediate transfer member has a base layer and a surface layer, the surface layer has a matrix-domain structure in the cross section in the thickness direction, the matrix is formed of a binder resin, the domains contains a perfluoropolyether, and a microhardness of a surface of the electrophotographic intermediate transfer member measured by an ultramicro-hardness meter is 50 MPa or more.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: August 1, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Rieko Sakamoto, Koichi Sato, Kenji Onuma, Kimihiro Yoshimura, Naoto Kameyama, Yasushi Shimizu, Akira Watanabe
  • Patent number: 9581940
    Abstract: Provided is a transfer device including a primary transfer roller that selectively takes a contact position where an intermediate transfer belt is brought into contact with an image holding member, and a separation position where the intermediate transfer belt is separated from the image holding member, a tension applying roller on which the intermediate transfer belt is wound thereon together with a driving roller and which is urged in a direction receding from the driving roller, and a relaxing member that is attached to a shaft portion of the tension applying roller, is urged by an urging unit in a direction approaching the driving roller, and relaxes an urging force of the tension applying roller in a direction receding from the driving roller when the primary transfer roller is at the separation position.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: February 28, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Sota Hara, Yoshiyuki Takashima, Hiroaki Yagi, Masakazu Shirai, Koji Deguchi, Kentaro Iwamoto, Yuta Hiramine
  • Patent number: 9340008
    Abstract: An image recording method includes recording an intermediate image by applying an ink to an intermediate transfer body, and transferring the intermediate image onto a recording medium while heating the intermediate image. The ink contains a coloring material and polymer fine particles each including a core constituted by a crystalline polymer and a shell constituted by an amorphous polymer. In transferring the intermediate image, the intermediate image is heated to a temperature equal to or higher than a melting point of the crystalline polymer constituting the core and equal to or higher than a glass transition point of the amorphous polymer constituting the shell.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 17, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naofumi Shimomura, Yutaka Kurabayashi
  • Patent number: 9316956
    Abstract: An intermediate transfer member for use in an image-recording method that includes applying a reaction liquid to an intermediate transfer member, forming an intermediate image by applying an ink to the intermediate transfer member to which the reaction liquid has been applied, and transferring the intermediate image to a recording medium. The intermediate transfer member has protruding structures having an average height of 3.0 ?m or less on a surface thereof. An average ratio R of surface areas of the intermediate transfer member to a unit area of a surface of the intermediate transfer member and an average ratio S of a total surface area of upper portions of the protruding structures to a unit area of the surface of the intermediate transfer member satisfy the following formula (1): S? 1/24·(10R?13)??(1) wherein R?1.3, and 0?S?1.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: April 19, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsutoshi Noguchi, Yoshikazu Saito
  • Patent number: 9290016
    Abstract: A printing system is disclosed which comprises an image forming station 12 at which an ink that includes an organic polymeric resin and a coloring agent is applied to an outer surface of an intermediate transfer member 10 to form an ink image, a drying station 14 for drying the ink image to leave a residue film of resin and coloring agent; and an impression station 16 at which the residue film is transferred to a substrate. The intermediate transfer member 10 comprises a thin flexible substantially inextensible belt and the impression station 16 comprises an impression cylinder 20 and a pressure cylinder 18 having a compressible outer surface for urging the belt against the impression cylinder to cause the residue film resting on the outer surface of the belt 10 to be transferred onto a substrate passing between the belt 10 and the impression cylinder 20 during engagement with the pressure cylinder.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: March 22, 2016
    Assignee: LANDA CORPORATION LTD.
    Inventors: Benzion Landa, Aharon Shmaiser, Itshak Ashkanazi
  • Patent number: 9234300
    Abstract: In accordance with the invention, there are image forming apparatuses, fuser members, and methods of making fuser members. The fuser member can include a substrate and an electrospun layer disposed over the substrate, the electrospun layer including a structure selected from a group consisting of a fiber-on-fiber structure, a bead-on-fiber structure, and a pop-corn structure, wherein the fuser member includes a top surface that is both hydrophobic and oleophobic.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: January 12, 2016
    Assignee: XEROX CORPORATION
    Inventors: Kock-Yee Law, Hong Zhao
  • Patent number: 9229416
    Abstract: An image forming apparatus includes an image carrier and a cleaning device. The image carrier is rotated to carry a toner image. The cleaning device includes a cleaning member and an auxiliary cleaning member. To the cleaning member, a bias of a reversed polarity to a polarity of a remained toner adhered on a surface of the image carrier is applied. The auxiliary cleaning member is located at an upstream side from the cleaning member in a rotating direction of the image carrier. According to advance of whitening of the surface of the image carrier, the auxiliary cleaning member is made to come into contact with the surface of the image carrier or contact pressure of the auxiliary cleaning member with the surface of the image carrier is increased.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: January 5, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Teppei Shibuya
  • Patent number: 9217959
    Abstract: An image forming apparatus includes a toner receiving member, and a toner receiver driving section. The toner receiving member supplements toner of a correction patch that falls from and spatters from an intermediate transfer belt. A toner receiver driving section movably supports the toner receiving member. A control section inserts the toner receiving member between a sheet-side transfer roller and the intermediate transfer belt when the sheet-side transfer roller is spaced apart from the intermediate transfer belt.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: December 22, 2015
    Assignee: KONICA MINOLTA, INC.
    Inventor: Shinichi Kawabata
  • Patent number: 9217961
    Abstract: An endless belt for an image forming device includes a base member that is shaped in a loop and is to be rotated around a center of the loop, and a reinforcement tape that is attached to a side of the base member, has two ends that are overlapped with each other, and has a bonding portion between the two ends in the overlapped portion. The bonding portion has an outer portion, an inner portion and a center portion between the inner and outer portions. A length of the center portion in a rotating direction of the base member is greater than a length of the inner portion and a length of the outer portion.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: December 22, 2015
    Assignees: Kabushiki Kaisha Toshiba, Toshiba TEC Kabushiki Kaisha
    Inventors: Yoshiaki Kaneko, Kimiaki Furukawa
  • Patent number: 9195176
    Abstract: An image forming apparatus includes: an image bearing member for bearing a toner image; a movable intermediary transfer member onto which the toner image is to be transferred from the image bearing member; and a cleaning member, contacting a surface of the intermediary transfer member, for scraping off a toner from the surface of the intermediary transfer member which moves. At the surface of the intermediary transfer member, a plurality of grooves are formed along a surface movement direction of the intermediary transfer member. The surface of the intermediary transfer member has an average in-plane roughness of 10 nm or more and 30 nm or less in an area of a square of an average particle size of the toner.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: November 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Seki, Takaaki Tsuruya, Taku Kanai
  • Patent number: 9042779
    Abstract: An image forming apparatus includes a housing and a transfer unit. The transfer unit detachably attachable relative to the housing includes a drive roller, a driven roller disposed opposite the drive roller, a belt formed into a loop and entrained around the drive roller and the driven roller, a frame to support the shaft of the drive roller, and a support member to movably support the shaft of the driven roller to be parallel to an axial direction of the drive roller and movable in a first direction different from the axial direction. A positioning member disposed in the housing holds the shaft of the drive roller parallel, and a restriction member restricts movement of the driven roller in the first direction to keep the shaft of the driven roller parallel to the shaft of the drive roller as the transfer unit is mounted in the image forming apparatus.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: May 26, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Seiichi Kogure, Katsuhito Haruno, Hiroki Nakamatsu, Kazuki Yogosawa
  • Publication number: 20150139704
    Abstract: Image forming apparatus includes: main body casing having first and second side walls opposite to each other, and upper portion having opening; top cover swingably supported on the upper portion of the main body casing at a position near the second side wall and configured to openably close the opening; endless belt disposed below the top cover and having first end portion closer to the first side wall and second end portion closer to the second side wall; photoconductor drum disposed under the endless belt; development unit disposed under the photoconductor drum and configured to supply developer to the photoconductor drum; and fixing device disposed above the second end portion of the endless belt. The endless belt is configured to be swingable about axis of rotation provided near the second side wall such that the first end portion of the endless belt is swingable in an upper-lower direction.
    Type: Application
    Filed: January 29, 2015
    Publication date: May 21, 2015
    Inventor: Toshio Furukawa
  • Patent number: 9037042
    Abstract: An image forming apparatus includes: a transfer unit that is detachably attachable to a housing of the image forming apparatus and includes: a transfer member configured to contact the image carrier; a movable frame that supports the transfer member and configured to rotate around a fulcrum shaft; a driving input member coaxially arranged with the fulcrum shaft and configured to connect to a first driving transmitting member, and a second driving transmitting member supported by the movable frame and configured to transmit a driving force inputted by the driving input member to the transfer member. The image forming apparatus further includes a contact/separation unit configured to press the transfer member against the image carrier and to separate the transfer member from the image carrier by moving the movable frame around the fulcrum shaft while the transfer unit is attached to the image forming apparatus.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: May 19, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Yuji Kato, Yasufumi Takahashi, Osamu Ichihashi
  • Patent number: 9034476
    Abstract: Concerned with a cylindrical conductive belt for electrophotography which has made permanent curl less occur. The conductive belt has a continuous phase containing a thermoplastic polyester resin and discontinuous phases each containing any one or both selected from a polyether-ester amide and a polyether amide, and the discontinuous phases are present in such way as to extend in the peripheral direction of the belt; the belt having a crystallinity that is lower on the outer-peripheral surface side than on the inner-peripheral surface side.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: May 19, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kouichi Uchida, Hiroomi Kojima
  • Publication number: 20150125189
    Abstract: A belt assembly includes a belt, a plurality of support rollers, and a shaft-end retainer. The belt is formed into an endless loop, entrained about and stretched taut between the plurality of support rollers with a rotary shaft. The plurality of support rollers includes a first support roller and a second support roller. The shaft-end retainer including a first retainer and a second retainer is disposed at each end of the rotary shaft of the plurality of support rollers. The first retainer detachably holds an end of the rotary shaft of the first support roller. The second retainer detachably holds an end of the rotary shaft of the second support roller and includes a second-retainer opening from which the end of the rotary shaft of the second roller is detachable from and attachable to the second retainer in a direction perpendicular to the rotary shaft of the second support roller.
    Type: Application
    Filed: October 27, 2014
    Publication date: May 7, 2015
    Inventors: Yoshiki HOZUMI, Naomi SUGIMOTO, Naoki IWAYA, Yasufumi TAKAHASHI, Masaharu FURUYA, Kazuchika SAEKI
  • Patent number: 9014602
    Abstract: An image forming apparatus includes an image bearing member which bears a toner image, an intermediate transfer member which bears the toner image transferred from the image bearing member, an endless recording material-conveying member which conveys a recording material, and a transfer portion which transfers the toner image to the recording material conveyed from the intermediate transfer member by the recording material-conveying member, wherein a perimeter of the intermediate transfer member is set to substantially an integral multiple of a perimeter of the recording material-conveying member.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: April 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takenori Sueoka
  • Patent number: 8962133
    Abstract: An object of the present invention is to provide: an electrophotographic member which enhances image quality, prevents the lowering of a grade of an image even when images have been repeatedly output, and can remarkably enhance the stability of the grade of the image; an intermediate transfer member; and an image forming apparatus. The electrophotographic member includes a base layer and a surface layer, wherein the surface layer has a binder resin, perfluoropolymer fine particles, a fluorocarbon resin dispersing agent and a particular fluorine compound, wherein the perfluoropolymer fine particle has a fluorine compound carried on its surface.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: February 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Sato, Naoto Kameyama, Kenji Onuma, Koichi Nakamura, Tadanobu Yoshikawa, Hiroshi Tominaga, Akira Watanabe, Yasushi Shimizu, Rieko Sakamoto
  • Patent number: 8965256
    Abstract: An image forming apparatus includes an image bearing member unit including a toner image carrying member, a transfer unit including a movable endless belt for transferring the toner image from the carrying member onto a transfer material, a plurality of stretching members for stretching the endless belt, and a supporting portion, provided at an end portion with respect to a widthwise direction, for supporting the stretching members. In addition, a main assembly frame is provided at a position opposing the supporting portion and includes a positioning portion for determining positions of the plurality of stretching members, wherein the supporting portion is movable relative to the main assembly frame.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: February 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeo Kawanami, Masahiro Suzuki, Masaru Shimura, Shinji Katagiri, Tatsuya Kinukawa, Shigeru Hoashi, Akinori Takayama
  • Patent number: 8952084
    Abstract: A composition that includes a polyalkylene glycol silicone phosphate and carbon black, and where there is formed between the carbon black and the silicone phosphate an ionic attachment and processes thereof.
    Type: Grant
    Filed: October 20, 2013
    Date of Patent: February 10, 2015
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Lin Ma, Lanhui Zhang
  • Publication number: 20150037075
    Abstract: It has been difficult to ensure satisfactory secondary transfer performance while ensuring satisfactory primary transfer performance by passing a current in the circumferential direction of an intermediate transfer belt from a current supply member. To satisfy a relationship of Rv>Rs, where Rv is resistance in the thickness direction of an intermediate transfer belt and Rs is resistance in the circumferential direction of the intermediate transfer belt over the distance between an image carrier located most upstream and an image carrier located most downstream in the movement direction of the intermediate transfer belt.
    Type: Application
    Filed: October 22, 2014
    Publication date: February 5, 2015
    Inventors: Yuji Kawaguchi, Shinji Katagiri, Masaru Ohno, Satoshi Takami, Yoshikuni Ito
  • Publication number: 20140369722
    Abstract: A method of forming a silicone release layer on a substrate, for an intermediate transfer member of a digital offset printing system, the method including: a) providing a curable first primer on the substrate; b) providing a curable second primer on the substrate; c) providing a curable silicone release formulation on the curable first and second primers; and d) curing the first primer, the second primer and the release formulation.
    Type: Application
    Filed: October 27, 2011
    Publication date: December 18, 2014
    Inventors: Meir Soira, Yevgenia Rudoy, Regina Guslitzer, Raia Slivniak, Oshra Raviv
  • Patent number: 8913906
    Abstract: An image forming apparatus includes an image bearing member for bearing a toner image, a rotatable endless belt, a first driving member for rotationally driving the endless belt and in contact with an inner peripheral surface of the endless belt, and a second driving member for rotationally driving the endless belt and in contact with an outer peripheral surface of the endless belt. In addition, a tension detecting unit detects a state of tension of the endless belt and a controller controls a rotational speed of the second driving member. A driving force applied from the second driving member to the endless belt is smaller than a driving force applied from the first driving member to the endless belt, and the tension detecting unit includes a metal roller contacting the inner peripheral surface of the endless belt and detects the tension by movement of the metal roller which follows the endless belt.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: December 16, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akimichi Suzuki, Takao Nada, Shinya Kawakami
  • Patent number: 8909111
    Abstract: It has been difficult to ensure satisfactory secondary transfer performance while ensuring satisfactory primary transfer performance by passing a current in the circumferential direction of an intermediate transfer belt from a current supply member. To satisfy a relationship of Rv>Rs, where Rv is resistance in the thickness direction of an intermediate transfer belt and Rs is resistance in the circumferential direction of the intermediate transfer belt over the distance between an image carrier located most upstream and an image carrier located most downstream in the movement direction of the intermediate transfer belt.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: December 9, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuji Kawaguchi, Shinji Katagiri, Masaru Ohno, Satoshi Takami, Yoshikuni Ito
  • Patent number: 8909112
    Abstract: An image forming apparatus including a conveyance unit to convey a transfer medium, a first image forming unit to form a monochrome image transferred at a first transfer position onto the transfer medium, and a second image forming unit disposed downstream from the first image forming unit in a direction of conveyance of the transfer medium, including an intermediate transfer body to form a multi-colored toner image on the intermediate transfer body. The multi-colored toner image is transferred onto the transfer medium at a second transfer position. The conveyance unit is separated from the intermediate transfer body at the second transfer position in a monochrome mode to form the monochrome image using only the first image forming unit, and contacts the intermediate transfer body at the second transfer position in a full-color mode to form a full-color image using both the first and second image forming units.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: December 9, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Tomoko Takahashi, Naoyuki Ozaki, Ryuji Yoshida, Nobuyuki Koinuma, Hiroaki Maeda, Shunichi Hashimoto, Mugijirou Uno, Yoshinori Nakagawa, Mikio Ishibashi, Hideki Zemba
  • Publication number: 20140341619
    Abstract: A transfer device includes an intermediate transfer belt, and a plurality of intermediate transfer rollers. A most upstream side intermediate transfer roller which is located most upstream in a moving direction of the intermediate transfer belt has a rotational axis arranged downstream from a rotational axis of a most upstream side photoreceptor drum which is located most upstream in the moving direction of the intermediate transfer belt when the most upstream side intermediate transfer roller is in its pressing position, while a most downstream side intermediate transfer roller which is located most downstream in the moving direction of the intermediate transfer belt has a rotational axis arranged upstream from a rotational axis of a most downstream side photoreceptor drum which is located most downstream in the moving direction of the intermediate transfer belt when the most downstream side intermediate transfer roller is in its pressing position.
    Type: Application
    Filed: August 5, 2014
    Publication date: November 20, 2014
    Inventor: Kuniaki NAKANO
  • Patent number: 8886106
    Abstract: An object is to provide an intermediate transfer belt and a method for producing the same which inhibits fine toner dots in white area in an environment of low temperature and low humidity and further, inhibits roughness of image with long-term use. An intermediate transfer belt for an electrophotographic image forming apparatus comprising a polyimide having a dispersed conductive filler, wherein the polyimide contains a unit structure represented by Formula (1); wherein X represents a group selected from Formulas (a) to (e), n, m, l each represents 0 or 1, and at least one of m and l is 1, wherein p in Formula (c) and q in Formula (e) each is an integer of 1 to 5.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: November 11, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Miyuki Murakami, Susumu Sudo
  • Patent number: 8886069
    Abstract: An image forming apparatus includes a main body, a sheet stack unit, an endless intermediate transfer member, a first transfer member for transferring a toner image onto the sheets conveyed from the sheet stack unit, at a nip formed between the intermediate transfer member and the first transfer member, and a second transfer member. In addition, a first voltage applying device applies a voltage to the first transfer member, a second voltage applying device applies a voltage having an opposite polarity to the second transfer member, and a controller controls the first and second voltage applying devices.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: November 11, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuya Yanagi, Yasuhiro Fukase
  • Patent number: 8874015
    Abstract: A first transfer inner roller and a first transfer outer roller are arranged such that the leading edge of a recording material is pressed against an intermediate transfer member on the downstream side of an upstream side transfer portion to change a traveling direction of the recording material.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: October 28, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazukiyo Akashi, Jun Mochizuki, Yasuhito Shirafuji, Yasushi Takeuchi
  • Patent number: 8865306
    Abstract: An intermediate transfer member that includes a fluorinated polyamic acid and a conductive component.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: October 21, 2014
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Lanhui Zhang, Lin Ma, Kock-Yee Law
  • Patent number: 8849168
    Abstract: An image forming apparatus includes a transfer belt, a pressure receiving roller, a suspension roller, a secondary transfer roller, and an endless support belt. The support belt is stretched over at least one of the pressure receiving roller and the suspension roller. When pressing the transfer belt between the pressure receiving roller and the secondary transfer roller, and nipping paper between the transfer belt and the secondary transfer roller, an angle defined by the portion, upstream from the secondary transfer roller, of the transfer belt and an imaginary line connecting the pressure-receiving-roller axis with the secondary-transfer-roller axis is less than 90 degrees. A part of the support belt is held between the transfer belt and at least one of the two rollers over which the support belt is stretched.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: September 30, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Hideo Yamaki, Satoshi Nishida, Yusuke Nishisaka
  • Patent number: 8835010
    Abstract: Disclosed are a belt member having high wear resistance and thereby capable of maintaining its initial surface properties for a long period of time and a fixing device provided with, the belt member, and an image forming apparatus. The belt member has a belt shape, and its surface is formed of a cured resin including a structural unit derived from urethane (meth)acrylate (A) having at least three (meth)acryloyloxy groups per molecule, a structural unit derived from a polyfunctional monomer (B) having no urethane bond and having at least three (meth)acryloyloxy groups per molecule, and a structural unit derived from a fluorine-modified acrylate (C). The cured resin contains 18 to 63% by mass of the structural unit derived from the urethane(meth)acrylate (A), 18 to 63% by mass of the structural unit derived from the polyfunctional monomer (B), and 10 to 40% by mass of the structural unit derived from the fluorine-modified acrylate(C).
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: September 16, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Sadaaki Sakamoto, Go Yamaguchi, Akihiro Honya
  • Patent number: 8837968
    Abstract: An image formation apparatus includes an image carrier; a driving source generating a driving force for the image carrier; a drive transmission unit; a driving control unit controlling the driving source; an image formation unit forming an image on a surface of the image carrier; a transfer nip between a transfer member and the surface of the image carrier; a driving-force exerting unit exerting a driving force on any one of the image carrier and a first drive transmission member on a drive transmission path, and a specific drive transmission member imparting weakest spring characteristics among drive transmission members to a drive transmission system; a detecting unit detecting an estimation parameter used in estimating a driving-load-torque variation amount of the image carrier; a torque-variation-amount estimation unit; and a driving-force control unit controlling the driving force to cancel the driving-load-torque variation.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: September 16, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Andoh, Takashi Hashimoto, Takashi Hodoshima, Masahiko Kato
  • Patent number: 8828475
    Abstract: An image forming method which applies a zinc-containing metal soap to a surface of an intermediate transfer belt including nitrogen on its surface. At least one of the following formulae is satisfied: (1?C/D)×100(%)?(B/A)×100(%)?10(%) (F/E)×100(%)?30(%) wherein A and B represent a percentage content of nitrogen at the surface of the intermediate transfer belt before and after image formation on 1,000 sheets, respectively, C represents a percentage content of zinc at the surface of the intermediate transfer belt after the image formation on 1,000 sheets, D represents a percentage content of zinc based on all elements other than hydrogen in the zinc-containing metal soap, and E and F represent a percentage content of nitrogen at the surface of the intermediate transfer belt before and after application of the metal soap thereto for 5 minutes without image formation, respectively.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: September 9, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Momoko Shionoiri, Toshiyuki Kabata
  • Patent number: 8824940
    Abstract: An image forming apparatus for transferring and superimposing toner images formed on plural image bearers onto an endless intermediate transfer member in an electric field created between the plural image bearers and plural semi conductive transfer members internally contacting the endless intermediate transfer member. The image forming apparatus includes a heat generating member arranged inside the intermediate transfer member to generate heat. A heat transfer member is provided to transfer the heat to the plural semi conductive transfer members.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: September 2, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Hiromi Ogiyama, Ken Yoshida
  • Patent number: 8808819
    Abstract: A tubular member formed of a polyamide resin layer includes carbon black and a semi-aromatic polyamide resin having at least a repeating unit structure derived from an aromatic dicarboxylic compound and an aliphatic diamine compound with the alkyl carbon number in the range of from 9 to 13.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: August 19, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kenji Oomori, Tomoo Matsushima, Yousuke Tsutsumi, Shoichi Morita, Yutaka Sugizaki
  • Patent number: 8811866
    Abstract: An image forming apparatus includes an image bearing member, a detector that detects a density of developer on the image bearing member, a support member supported in the image forming apparatus and removably supporting the detector, a separator disposed with a space from the detector, a first connected unit disposed on the support member between the separator and detector, a second connected unit disposed on the support member on an opposite side of the detector from the first connected unit, a fixing member including a first connecting unit that passes through the space and is supported by the first connected unit and a second connecting unit supported by the second connected unit, where the fixing member fixes the detector to the support member, and a disengagement restricting unit disposed on an opposite side of the detector from the separator so as to be adjacent to the second connecting unit.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: August 19, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Masahiro Agatsuma
  • Patent number: 8811867
    Abstract: A transfer device includes a plurality of rollers, a rotatable intermediate transfer belt wound around and stretched between the rollers, a transfer member disposed in the inner loop of the belt and facing an image bearing member of an image forming apparatus disposed at an outer circumference of the belt, to transfer an image formed onto the surface of the image bearing member when contacting the intermediate transfer belt, and a position adjuster to adjust the position of the intermediate transfer belt at different positions relative to the image bearing member. The positions include a contact state in which the intermediate transfer belt applied with a predetermined tension contacts the image bearing member, a first separation state in which the tensioned intermediate transfer belt separates from the image bearing member, and a second separation state in which the intermediate transfer belt separates further away from the image bearing member.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: August 19, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Osamu Ichihashi, Ryuuichi Mimbu, Kenji Sengoku, Junpei Fujita
  • Patent number: 8802336
    Abstract: An image forming apparatus may include an electrophotographic photoreceptor and an intermediate transfer member. An image may be formed by primary transferring a toner image held on a surface of an electrophotographic photoreceptor to an intermediate transfer member, and secondary transferring the toner image from the intermediate transfer member to a transferee material. A dispersive component of surface energy of the electrophotographic photoreceptor and a dispersive component of surface energy of the intermediate transfer member may satisfy a relationship of (the dispersive component of surface energy of the electrophotographic photoreceptor)?(the dispersive component of surface energy of the intermediate transfer member).
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: August 12, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Kenji Sakka, Yuichiro Maehara
  • Patent number: 8787805
    Abstract: An area in which a sheet member and an intermediate transfer belt are in contact with each other is provided between an intersection between a guide surface of the second guide portion configured to guide a recording material toward the intermediate transfer belt and the intermediate transfer belt and a nip portion.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: July 22, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takao Nakajima