Patents Examined by Roy Yi
  • Patent number: 8059998
    Abstract: In an image forming device including a first rotary member arranged to drive an intermediate transfer belt, a first motor arranged to rotate the first rotary member, and a second rotary member arranged to transfer a toner image formed on the intermediate transfer belt to a recording sheet, a torque command value detecting unit detects a torque command value to the first motor. A setting unit sets up a lower limit of the torque command value. A judgment unit determines whether a detected torque command value exceeds the lower limit. A control unit controls driving of the second rotary member when the detected torque command value exceeds the lower limits so that a difference between a surface speed of the intermediate transfer belt and a peripheral speed of the second rotary member falls within a predetermined range.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: November 15, 2011
    Assignee: Ricoh Company, Ltd.
    Inventor: Takahisa Koike
  • Patent number: 8014695
    Abstract: An image forming apparatus for forming an image on a sheet, includes: an image forming section which forms the image on the sheet; a fixing device which fixes the image onto the sheet; a first duct which covers the fixing device and ventilates air heated by the fixing device; a second duct, which covers the first duct and ventilates cool air introduced from outside; and an exhaust fan which exhausts the air that has passed through each of the first duct and the second duct.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: September 6, 2011
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Kanehiro Watanabe
  • Patent number: 8010019
    Abstract: An image forming apparatus that includes a plurality of image bearing members, a plurality of drive sources each including a drive gear, a plurality of driven gears, a visible image forming unit, an endless traveling member, a transfer unit, an image detection unit, and a controller. The controller controls rotation of the plurality of image bearing members according to a velocity fluctuation pattern of each surface of the image bearing members based on a detection time interval between predetermined visible detection images formed on the surface of the image bearing member and transferred therefrom to the endless traveling member detected by the image detection unit. Each of the plurality of driven gears includes a gear portion and an engaging portion integrated therewith. The gear portion includes a geared circumference and the engaging portion engages the image bearing member.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: August 30, 2011
    Assignee: Ricoh Company Limited
    Inventors: Noriaki Funamoto, Joh Ebara, Kazuhiko Kobayashi, Keisuke Sugiyama, Toshiyuki Uchida, Yasuhisa Ehara
  • Patent number: 8000614
    Abstract: A developer supply container detachably mounts to a developer receiving apparatus and supplies a developer by rotation and includes a regulation portion for determining whether or not the developer supply container should be mounted by being regulated by a regulation member of the developer receiving apparatus and a lead portion which is movable relative to a guiding portion of the developer receiving apparatus so that the regulation member and the regulation portion are in phase with each other. When the developer supply container is inserted in a direction of a rotation axis thereof, a phase of the regulation portion with the regulation member is determined by movement of the lead portion of the developer supply container relative to the guiding portion of the developer receiving apparatus and then is regulated by the regulation member.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: August 16, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ayatomo Okino, Katsuya Murakami
  • Patent number: 7991317
    Abstract: In order to provide an automatic job template generating apparatus capable of making operations simpler by reducing the steps in the user interface operation to match a frequently used capability of an MFP, an automatic job template generating apparatus of the invention is formed of an operation history acquisition unit configured to acquire an operation history of a multi function peripherals for each user according to information accessed to the multi function peripherals on the Web, an operation frequency analysis unit configured to analyze an operation frequency at regular timing according to the operation history acquired by the operation history acquisition unit, and a job template generation unit configured to newly generate a job execution parameter having a high operation frequency on an operation screen as a job template button according to an analysis result of the operation analysis unit.
    Type: Grant
    Filed: February 19, 2007
    Date of Patent: August 2, 2011
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Hiroyuki Kato, Sunao Tabata, Haruhiko Ishida, Masao Yamaguchi, Takahiro Fuchigami
  • Patent number: 7991334
    Abstract: A toner container includes a longitudinal container body and a held portion. The longitudinal container body has a first end and a second end distal to the first end in a length direction of the container body. The container body includes a gear configured to engage with a drive gear provided in the main body. The held portion is attached to the first end of the container body and configured to be detachably attached to the toner-container holder. The held portion includes a toner outlet, is configured to be held by the toner-container holder in non-rotating manner, and is biased downwardly by a force applied from the drive gear to the gear when the drive gear rotates.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: August 2, 2011
    Assignee: Ricoh Co., Ltd.
    Inventors: Nobuyuki Taguchi, Masayuki Yamane, Hideo Yoshizawa, Takeroh Kurenuma, Takayuki Tamaki, Seiji Terazawa, Masashi Hasegawa, Fumie Satoh, Teruo Hitosugi, Takashi Hisazumi, Goro Katsuyama
  • Patent number: 7991339
    Abstract: A fuser device used with an imaging system for setting toner on a recording media is disclosed. The fuser device includes a heating element; a rolling piece for exerting pressure on the toner adhered on the recording media; a film for clamping the recording media with the rolling piece, the film being in the heat of the heating element to set the toner on the recording media; and a control structure. The control structure has a base piece on which a first engaging portion and a second engaging portion are disposed. The heating element, the first engaging portion and the second engaging portion form a loop and the film surrounds the loop.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: August 2, 2011
    Assignees: Silitek Electronic (Guangzhou) Co., Ltd., Lite-On Technology Corporation
    Inventors: Cheng-Wen Tsai, Ming-Chun Hsu
  • Patent number: 7991320
    Abstract: In an image forming device, at an end portion of a middle frame, a first protrusion and a second protrusion are arranged so as to protrude substantially parallel to each other. A plate-shaped arm extends from a leading end of the second protrusion in a direction towards a leading end of the first protrusion. A control protrusion is integrally arranged at a leading end of the plate-shaped arm. On the other hand, a rear side frame has a recessed portion. When the first protrusion, the second protrusion, and the plate-shaped arm are inserted into the recessed portion, the control protrusion passes a latching protrusion provided to the recessed portion, and the control protrusion and the latching protrusion are latched by facing each other.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: August 2, 2011
    Assignee: Murata Machinery, Ltd.
    Inventor: Takashi Nakano
  • Patent number: 7983574
    Abstract: A method and system compare actual consumable usage (e.g., toner usage) with expected consumable usage in a xerographic machine, such as a printer or copier. Expected toner usage may be predicted from pixel count (area coverage) and actual usage is obtained from monitoring of consumable usage, such as from toner dispense data or toner bottle replacements. If the actual toner usage differs significantly from the expected toner usage (e.g., ±40%), the system may take some action, such as scheduling of a service call. Early detection of abnormal consumable usage in a xerographic machine may allow early correction before any noticeable image defects occur, such as images that are too light or too dark.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: July 19, 2011
    Assignee: Xerox Corporation
    Inventor: Kurt Robert Thor Kolb
  • Patent number: 7983594
    Abstract: An image forming apparatus configured to effectively prevent a failure in an image is provided. The image forming apparatus of the invention includes a housing, a transport belt for transporting a sheet along a sheet transport face, an image forming portion arranged above the sheet transport face, and a fixing unit arranged on a downstream side of the sheet transport face of the transport belt in a sheet transport direction. The fixing unit includes a heating roller and a pressure roller. A deposit portion where a toner waste deposits is disposed between the image forming portion and the heating roller. The deposit portion is provided with a contact portion that is configured to make contact with an image formation outside region at a trailing edge of the sheet jumping in a direction approaching the heating roller by being separated from the sheet transport face.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: July 19, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Yohei Hashimoto
  • Patent number: 7978988
    Abstract: An image forming apparatus, which has a plurality of image forming units, comprises a plurality of cartridges adapted to supply developer; a plurality of supply members adapted to supply developer to the image forming units from a plurality of the cartridges; a drive unit adapted to drive a plurality of the supply members; and a control unit adapted to supply developer from a plurality of the cartridges by selectively operating a plurality of the supply members based on the amount of developer accommodated in the cartridges.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: July 12, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hajime Sugaya
  • Patent number: 7979004
    Abstract: The electrophotographic belt of the present invention is characterized that, in the electrophotographic belt composed of the thermoplastic resin composition containing thermoplastic resin, with respect to a flake-shaped portion having an arc length of 5% of the inner peripheral length of the electrophotographic belt, when the thickness of the flake-shaped portion is measured at intervals of 1 mm in the peripheral direction, the difference between the maximum value and the minimum value of the measured value is 2% or more and 20% or less of an arithmetic average value.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: July 12, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Tanaka, Takashi Kusaba, Hidekazu Matsuda, Yuji Sakurai, Akihiko Nakazawa
  • Patent number: 7974548
    Abstract: A developing device of the present invention has a toner supply opening in a first carrying path and in the upstream of the developer carrying direction of a first carrying screw which is further from a developing roller; and a moquette member having feathers on its surface, and being provided, along the developer carrying direction, on the first carrying path. With this arrangement, it is possible to realize a compact developing device having a simple arrangement in which the supplied toner is speedily mixed with the preexisted developer, and the stable toner which is uniformly dispersed and charged can be speedily supplied for development.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: July 5, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Ryosuke Mano, Koichi Mihara, Masatoshi Kaneshige, Hiroshi Kubota
  • Patent number: 7962055
    Abstract: According to one embodiment, an image forming apparatus includes a photoreceptor, a charging unit, an exposure unit, a developing unit, a transfer unit, a fixing unit, an environment detecting unit and a control unit. The charging unit includes a charger and a static eliminator. The charger contacts with a surface of the photoreceptor and charges the surface to a first voltage. The static eliminator contacts with the surface and discharges the surface to a second voltage. The environment detecting unit detects an environmental data. The control unit controls the first voltage based on the environmental data.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: June 14, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuo Takuma, Masanari Fujita, Masaki Tsuchiya, Nobuaki Fukasawa
  • Patent number: 7957676
    Abstract: A development device includes a developer container reserving a liquid developer containing toner particles and a carrier liquid. A developer supply member supplies a developer supporting member with liquid developer. An agitating member is disposed in the developer container and supplies the developer supply member with the liquid developer. A developer supporting member cleaning member removes liquid developer on the developer supporting member.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: June 7, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Toru Tanjo, Tsutomu Sasaki
  • Patent number: 7953348
    Abstract: A fusing device of an image forming apparatus which applies principles of leverage, and an image forming apparatus containing such a device. The fusing device includes a fusing unit having a heating roller and a pressure roller facing each other and which rotate together, a cover which opens and closes the fusing unit, and a pressure and release unit, one end of which is rotatably fixed to a rotating shaft, the pressure and release unit containing a member having a pressuring unit which pressures the pressure roller towards the heating roller when the cover opens and shuts, and a pressured part, which is farther from the rotating shaft than the pressuring part and which receives pressure from the cover.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: May 31, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woong-jae Chang, Sea-chul Bae
  • Patent number: 7949274
    Abstract: In a fixing apparatus having a first roller which includes a first heater and a second heater arranged in difference ranges from each other in the direction of rotation axis and an auxiliary heater arranged in a range including the ranges where the first and second heaters are arranged in the direction of rotation axis, and a second roller which is heated by a third heater and nips and carries a sheet in cooperation with the first roller, predetermined timing accompanied by start of fixing processing in the fixing apparatus is determined, and when it is determined that the predetermined timing has been reached, the quantity of power supply to the third heater is reduced and power supply to the auxiliary heater is started.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: May 24, 2011
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Noboru Furuyama
  • Patent number: 7949272
    Abstract: A transfer unit transfers a toner image formed on an image carrier onto a recording medium. A fixing unit includes a fixing roller and a pressure roller for fixing the toner image onto the recording medium by applying heat and pressure to the recording medium. At least one driving unit drives the fixing roller and the pressure roller. When stopping the fixing roller, a control unit controls the driving unit to stop the fixing roller such that the fixing roller and the pressure roller make a contact with each other at a contact position different from a previous contact position.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: May 24, 2011
    Assignee: Ricoh Company, Limited
    Inventor: Tatsuya Ozaki
  • Patent number: 7949282
    Abstract: A developing device includes a housing, a developing roller that carries developer, a supply roller for supplying the developer, a developer cartridge that accommodates the developer, a first sealing member that is provided at both ends of the developing roller, a developer passage opening provided in at least one of the housing and the developer cartridge, and a second sealing member provided in a vicinity of the developer passage opening. At least a part of the second sealing member overlaps the first sealing member in a direction in which the developer cartridge is attachable to and detachable from the housing. A portion of a shadow of the second sealing member cast in a direction, in which the developer passes through the developer passage opening, overlaps the first sealing member. The developer cartridge is attachable to and detachable from the housing at a position opposed to the developing roller.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: May 24, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Soichiro Mase
  • Patent number: 7941061
    Abstract: An image forming apparatus is provided. The image forming apparatus includes: a body, to which a plurality of image forming cartridges containing developers are attachable; and a communication device which wirelessly communicates with a plurality of non-contact tags provided to the plurality of image forming cartridges, respectively. The communication device includes: a plurality of antennas which are provided correspondingly with the plurality of image forming cartridges; and a switching controller which switches signals from the plurality of antennas.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: May 10, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Seijiro Kadowaki