Patents Examined by David Blackshire
  • Patent number: 7292803
    Abstract: An image forming apparatus is provided having a developing unit including a handle. The developing unit of the image forming apparatus includes at least one of a photosensitive body and a developing roller developing a developer on the photosensitive body. A case protects the image forming unit and a handle is installed on the case to handle the developing unit. The handle pivots to a first position attached to the case and a second position opposite to the first position.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: November 6, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-Sun Ahn, Joo-Hwan Noh, Yong-Kon Jo
  • Patent number: 7292804
    Abstract: A printing system that receives an imaging media cartridge includes a rail and a dock to install the imaging media cartridge. The imaging media cartridge includes a housing that has pivots along an alignment axis substantially parallel to the rail. The imaging media cartridge further includes a roller that slides along the rail, the roller being disposed on the housing. The imaging media cartridge also includes a bracket disposed on the housing. To insert the bracket into the dock, the housing rotates on the pivots. To further adjust the position of the imaging media cartridge in the xerographic system, the housing rotates along at least one axis substantially orthogonal to the alignment axis. The rail includes a support beam and a flange. The roller includes at least a pair of wheel housings, each wheel housing having a pair of tandem wheels that glide along the rail. The tandem wheels face each other and glide along the flange and between the support beam.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: November 6, 2007
    Assignee: Xerox Corporation
    Inventors: Todd K Preston, Richard A Kalb, James J Spence
  • Patent number: 7289744
    Abstract: An image forming apparatus includes an electrode member to prevent the generation of an image defect in the image forming apparatus, in which the electrode member is provided in the downstream side of a transfer device, the transfer device and a fixing device are arranged while brought close to each other, and the sheet is sandwiched by the fixing device while sandwiched and conveyed by an image bearing device and the transfer device.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: October 30, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jiro Shirakata, Koji Takematsu, Hisashi Otaka, Kohei Koshida, Kenichi Manabe, Hideaki Miyazawa, Hideaki Kosasa, Yuji Yamanaka
  • Patent number: 7286780
    Abstract: In a temperature detector a smoother circuit receives a pulse signal generated by a pulse signal generation circuit to smooth the signal and transmit it to a first node. A comparator compares a level in voltage transmitted on the node with that in voltage on a second node connected to a thermistor element line and outputs a resultant comparison as a detection signal to a heater controller. The temperature detector can have on the first node a reference voltage adjustable by a duty ratio of the pulse signal output by the pulse signal generation circuit. A resistor or similar component can be dispensed with and simply by adjusting the pulse signal's duty ratio the reference voltage can be adjusted. Temperature can thus be detected with high precision.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: October 23, 2007
    Assignee: Funai Electric Co., Ltd.
    Inventor: Ryo Yonekawa
  • Patent number: 7266322
    Abstract: An interconnect includes a first contact portion including carbon fibers, a second portion including carbon fibers, and a member. The first contact portion is capable of electrically biasing the member and the second portion is capable of sensing an electrical bias of the member. Both portions may provide other electrical functions. Both portions may structurally support the member.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: September 4, 2007
    Assignee: Xerox Corporation
    Inventors: Joseph A. Swift, Stanley John Wallace, Richard Seyfried
  • Patent number: 7257357
    Abstract: Embodiments herein comprise a charging station adjacent a photoreceptor. The charging station is adapted to charge the document zone of the photoreceptor with a first negative voltage and to charge the inter-document zone of the photoreceptor with a second negative voltage that is more negative than the first negative voltage. The second more negative voltage reduces the amount of positive charges trapped within layers of the inter-document zone of the photoreceptor. Thus, when the charging station increases the size of the document zone from a smaller size associated with a smaller printing medium to a larger size associated with a larger printing medium, by reducing the positive charges from being trapped within layers of the inter-document zone of the photoreceptor, ghosting is reduced on the larger printing medium.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: August 14, 2007
    Assignee: Xerox Corporation
    Inventors: Douglas A. Lundy, Michael J. Turan, Huoy-Jen Yuh, Moritz Wagner
  • Patent number: 7251443
    Abstract: A laser printer includes a photoreceptor drum, a transfer roller contacting the photoreceptor drum, a transfer roller frame holding the transfer roller, an outer frame holding the transfer roller frame, a diselectrification brush fixed to the transfer roller frame, and a spring at least having a surface formed of conductive material for biasing the transfer roller toward the photoreceptor drum. The spring is formed of a single member and has a first extension contacting the diselectrification brush and a second extension contacting the outer frame.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: July 31, 2007
    Assignee: Funai Electric Co., Ltd.
    Inventors: Kazushi Koike, Kiyoshi Chinzei
  • Patent number: 7248819
    Abstract: A developer driving device and an image forming apparatus are provided. The developer driving device includes a photosensitive drum driving gear installed on a flange which resides at one end a photosensitive drum on a photosensitive drum axis, that rotates the photosensitive drum connected to a main motor of a main body frame; and an intermediary gear installed to be able to perform a no-load operation on the flange, that rotates a developing roller driving gear connected to a sub motor of the main body frame. The photosensitive drum driving gear and the intermediary gear are connected to different motors.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: July 24, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: In-Cheol Jeon
  • Patent number: 7248806
    Abstract: The present invention is directed to an article, system and method for determining and/or selecting the location of a toner engaging member in a developing agent device such as a toner cartridge. The article, system and method may be applied to a printing device such as a laser printer.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: July 24, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Benjamin Alan Askren, Lenci Robert Kappes, Steven Michael Turney
  • Patent number: 7242892
    Abstract: A wet type image forming apparatus forms an image in accordance with an electrophotographic imaging process using a developing solution containing a toner in a carrier solution. The image forming apparatus includes a developing roller that holds the developing solution thereon, the developing roller being electrically charged to attract a toner contained in the developing solution toward its surface, a photoconductive drum on which a latent image to be developed is formed, the photoconductive roller being arranged to contact the developing roller, a scraping blade disposed in contact with the developing roller, the scraping blade scraping off the developing solution that has not been consumed for developing from the surface of the developing roller, and a toner separator that separates the toner that has not been consumed for developing from the surface of the developing solution carrier before the developing solution is scraped off by the scraping blade.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: July 10, 2007
    Assignee: PENTAX Corporation
    Inventors: Hiroyuki Saito, Hidetaka Yamaguchi, Motohiro Maseki
  • Patent number: 7239817
    Abstract: A device for identifying types of sheet materials has a detecting unit for detecting information regarding moisture of a sheet material; external force applicator for applying an external force to the sheet material; information obtaining unit for obtaining information according to a force that is attenuated by the presence of the sheet material when the external force is applied to the sheet material by the external force applicator; and a judging unit for identifying the type of the sheet material based on the information obtained from the detecting unit and the information obtained from the information obtaining unit.
    Type: Grant
    Filed: December 26, 2003
    Date of Patent: July 3, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Norio Kaneko, Takehiko Kawasaki, Naoaki Maruyama
  • Patent number: 7187894
    Abstract: There is provided an image forming apparatus having an image forming section for forming an unfixed image on a transfer medium and a fixing device for fixing the unfixed image by sandwiching and heating the transfer medium that holds the unfixed image, wherein, the fixing device includes a fixing roller that contacts with the unfixed image, a press roller that contacts with the fixing roller, a heat belt that contacts with the fixing roller and heats the fixing roller, a plurality of support rollers for supporting the heat belt in such a manner that the heat belt is wound around the support rollers, a heat source for heating the heat belt, and a press member for pressing the heat belt against the fixing roller in a portion of the contact area where the fixing roller and the heat belt contact with each other.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: March 6, 2007
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Hiroshi Fuma
  • Patent number: 7184673
    Abstract: An image forming device includes a developer container sectioned into a plurality of chambers, an image forming unit which forms an image by using a developer supplied from the developer container, sensors which are respectively provided in at least two of the chambers of the developer container and detect the remaining amount of the developer in the chambers, and a determining unit which determines a status of the developer in the developer container in accordance with the remaining amount of the developer detected by the sensors.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: February 27, 2007
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Masanori Asakura
  • Patent number: 7162170
    Abstract: An image forming apparatus includes an image bearing member configured to bear a visible image including a toner charged with a predetermined polarity, an intermediate transfer member configured to receive the visible image from the image bearing member during a primary transfer process before the visible image is transferred onto a transfer medium during a secondary transfer process, a sensor configured to detect a density of the visible image, and a supporting member configured to support the intermediate transfer member and to generate an electric field having a polarity opposite to the predetermined polarity of the toner, in which the supporting member is held in contact with the intermediate transfer member and facing the sensor with the intermediate transfer member interposed therebetween.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: January 9, 2007
    Assignee: Ricoh Company, Ltd.
    Inventor: Shin Kayahara
  • Patent number: 7162185
    Abstract: A transmission comprises a rotary shaft; a gear secured to the rotary shaft coaxially; and a regulative member secured to the rotary shaft. This regulative member press-contacts one end of the gear to maintain the gear exactly perpendicular to an axis of the rotary shaft. A photosensitive drum is fit to the gear. The regulative member is secured on the rotary shaft by press fitting.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: January 9, 2007
    Assignee: Ricoh Company, Ltd.
    Inventor: Yasuhisa Ehara