Patents Examined by Hoan H. Tran
  • Patent number: 7689156
    Abstract: A tandem type image forming apparatus drives an agitation paddle when the waste toner defecated from a plurality of image forming units and flowed and collected in a single waste toner containing member by way of the first collection port thereof gets to a predetermined level in order to level the height of the waste toner in the waste toner containing member. The quantity of waste toner flowed by way of the first collection port is estimated from the quantity of the toners supplied from the toner cartridges of the development apparatus.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: March 30, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Kenichiro Shishikura
  • Patent number: 7689141
    Abstract: A reassembled laser printer toner cartridge and method of manufacture including a cartridge seal assembly in which the remains of an OEM laser printer toner cartridge's toner hopper pull seal strip(s) is left in position, or a substitute conductive strip is put in the same position to simulate the OEM pull seal strip(s) if the OEM strips have been damaged or are missing in order to enable a repaired or remanufactured cartridge to cooperate with the printer in detecting measuring and displaying the amount of toner consumed from the cartridge and shut the printer down, once the toner cartridge is empty, and a toner cartridge hopper foam seal strip assembly that covers the remnants of the OEM seal strips and provides a seal to prevent leakage of toner from the re-filled toner cartridge.
    Type: Grant
    Filed: October 27, 2007
    Date of Patent: March 30, 2010
    Assignee: Wazana Brothers International, Inc.
    Inventors: Scott Lenahan, Oswaldo Cota, Jesus Gonzalez Perez
  • Patent number: 7689144
    Abstract: Techniques for attaching a replacement chip to an imaging cartridge are described. a method of replacing a component of an imaging cartridge includes: providing the imaging cartridge including a chip and a chip holding structure holding the chip, the chip holding structure including a left upper flange, a right upper flange, a rear retaining member, bottom supporting rails, a left forward retaining element extending from the left upper flange, and a right forward retaining element extending from the right upper flange; removing at least a portion of the left forward retaining element and the right forward retaining element to form a modified chip holding structure; removing the chip from the cartridge; installing a replacement chip in the modified chip holding structure; and attaching the replacement chip to the imaging cartridge.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: March 30, 2010
    Assignee: Static Control Components, Inc.
    Inventors: Thomas J. Martin, James H. Jones, Andrew D. Scott, Lawrence Dale Lewis, Donald R. Huck
  • Patent number: 7684736
    Abstract: An image forming apparatus for forming a color image of CMK color plates by electrophotography system in which a K color plate having highest visibility among CMYK colors is composed of a rational number mesh. Profile of halftone dots (201Kh) becomes constant substantially and the factor for generating streak and unevenness is suppressed. Furthermore, C color plate and M color plate are formed of super cells and the K color plate, C color plate and M color plate are formed at an interval of 30°. Consequently, a Rosetta formed of halftone dots (201Ch, 201Mh, 201Kh) of CMK is optimized and the factor for generating moiré component is suppressed.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: March 23, 2010
    Assignee: FUJIFILM Corporation
    Inventor: Makoto Sugizaki
  • Patent number: 7684714
    Abstract: An image forming device. A direct voltage power supply is independently provided for each charging device for each color, and an alternating voltage power supply is commonly provided to the charging device for each color. A current detecting section detects current which flows between each image carrying body and each charging device. A control device judges that the image carrying body is damaged when a detected current value is not less than a preliminarily set specified value when a direct voltage is sequentially independently applied to the charging device for each color when leakage of charging voltage is generated.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: March 23, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Shinichi Kamoshida
  • Patent number: 7680444
    Abstract: A toner cartridge includes a toner container which contains toner, the toner container having at one end portion thereof a discharge port which discharges the toner, and a member which is attached to an outer peripheral surface of the one end portion. The member has a first part which is engaged with the one end portion, and a second part which has, at a position corresponding to the discharge port, a passage hole through which the toner discharged from the discharge port passes.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: March 16, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Satoshi Kaiho
  • Patent number: 7680424
    Abstract: Internally-heated external rollers transfer heat rapidly to a fuser roller in an electrostatographic printer. Stored media process set points, input image content and input media type data are used to regulate the heat transfer rate by varying the nip width between the heated external rollers and the fuser roller. The rate of heat transfer and the rate of heat transfer adjustment are sufficiently rapid that many different media weights and types may be mixed in a print run without restrictions on media run lengths, without collation requirements per run, and without productivity losses due to slowing of feed rate for heavier receivers.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: March 16, 2010
    Assignee: Eastman Kodak Company
    Inventors: James H. Hurst, John L. Hryhorenko, Muhammed Aslam, Douglas J. Kostyk
  • Patent number: 7676173
    Abstract: A cutting device for use in detaching a drum from a printer cartridge, the drum defining a hollow interior, the hollow interior being surrounded by an interior wall of the drum, the cutting device including a shaft and a pointed edge protruding from the shaft, the pointed edge being configured to rotate with the shaft when the drum is being detached from the printer cartridge.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: March 9, 2010
    Assignee: Future Graphics Imaging Corporation
    Inventor: Tigran Ohanyan
  • Patent number: 7672628
    Abstract: A post-fixing support unit which is disposed between a fixing roller including a heating roller having a heat generator and a pressure roller so disposed opposite to the heating roller as to form a nip portion and a plurality of sheet discharge rollers which are disposed on the downstream side relative to the fixing roller and corrugation rollers disposed respectively between the adjacent two sheet discharge rollers, such that the post-fixing support unit is located on the upstream side relative to the corrugation rollers at the same position as at least the corrugation rollers in the width direction.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: March 2, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Makoto Sato
  • Patent number: 7672635
    Abstract: A lubricant supplying device including a molded lubricant having a Martens hardness of about 40 N/mm2 to about 70 N/mm2 measured with a test force of 50 mN and a load-applying period of 30 seconds, a rotative member including a fibrous brush of a thickness of about 5 deniers to about 15 deniers in a circumference of a rotative supporting axis of the rotative member with a density of about 20,000 fibers to about 100,000 fibers per square inch, and configured to apply lubricant shavings of the molded lubricant to an image bearing member held in contact with a cleaning member and to remove the lubricant shavings remaining on the surface of the image bearing member, and a pressing member configured to press the molded lubricant against the rotative member at a pressure force ranging from about 2 N/m to about 12 N/m.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: March 2, 2010
    Assignee: Ricoh Co., Ltd.
    Inventors: Yoshiki Hozumi, Toshio Koike, Ken Amemiya, Masanori Kawasumi, Yuji Arai, Tokuya Ojimi, Takuzi Yoneda, Masami Tomita, Hiroshi Ono, Takatsugu Fujishiro, Haruji Mizuishi
  • Patent number: 7672608
    Abstract: An image forming apparatus, including an image forming section which conducts image formation on a sheet based on an image data, a tray which accommodates the sheets to be supplied to the image forming section, a humidity detecting unit which detects humidity inside the tray, a dehumidifying device which conducts dehumidification inside the tray; and a control section which controls the image forming section to prohibit image formation when the humidity inside the tray is higher than a predetermined value, the control section further controls the dehumidifying device to conduct the dehumidification inside the tray when the humidity inside the tray is equal to or lower than the predetermined value, and the control section still further controls the image forming section to conduct the image formation on the when the humidity inside the tray has been equal to or lower than the predetermined value.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: March 2, 2010
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Kenji Taki, Chikatsu Suzuki, Fusako Akimoto
  • Patent number: 7668495
    Abstract: An image heating apparatus including: a pressure member; a fixing roller to rotate on the pressure member; a heater to heat an external surface of the fixing roller; and a film to be heated by the heater. While passing through a gap between the pressure member and the fixing roller, the film may form a nip with the pressure member. The image heating apparatus may reduce an initial warm-up time through a film heating operation, and may utilize the fixing roller as a heat reservoir by heating the fixing roller.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: February 23, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong Woo Lee, Tae Gyu Kim, Su Ho Shin, Hwan Guem Kim
  • Patent number: 7668471
    Abstract: An image forming apparatus including a latent image bearing member; a developing device configured to develop a latent image on the image bearing member with a two-component developer; a development potential forming device configured to form a development potential; a toner replenishing device configured to supply the toner to the developing device; a toner concentration detecting device configured to detect and output the concentration of the toner in the developer; a toner concentration controlling device configured to compare the toner concentration output with a toner concentration target to control the toner concentration; an information detecting device configured to obtain information to determine the replacement amount of the toner in the developing device in a predetermined period of time; and a development potential correcting device configured to adjust the development potential on the basis of the information obtained by the information detecting device.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: February 23, 2010
    Assignee: Ricoh Company Limited
    Inventors: Nobutaka Takeuchi, Shin Hasegawa, Kohta Fujimori, Kayoko Tanaka, Yushi Hirayama
  • Patent number: 7668483
    Abstract: Provided is an image forming apparatus which includes a cylindrical image carrier, on which at least an electrostatic latent image is formed, and a charge roller for non-contact charging the image carrier with a predetermined charge gap, and applies at least an alternating current (AC) voltage to the charge roller to non-contact charge the image carrier, wherein a predetermined number of partition members for partitioning an internal space of the image carrier into a plurality of sub-spaces are arranged at a central position of an axial direction of the image carrier or in the vicinity of the central position of the axial direction of the image carrier, in the image carrier.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: February 23, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Shinichi Kamoshida, Tadahiro Mizutani
  • Patent number: 7668485
    Abstract: An image forming apparatus includes an image forming structure including an image carrier that carries an image and an optical writing device that writes a latent image onto the image carrier in an integral arrangement; plural development devices that develop a latent image carried by the image carrier; a shifting mechanism unit that shifts the image forming structure relative to the development devices; and a shift controller that controls the shifting mechanism unit so that the image carrier is shifted to a development position in contact with one of the development devices in a predetermined order.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: February 23, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Atsuyuki Kitamura
  • Patent number: 7664409
    Abstract: A control device executes toner concentration control that controls an operation of a developing device such that a value of detection output detected by a concentration detecting device falls within a predetermined range. Moreover, when controlling drive of a first driving device, which drives at least an image carrier, and drive of a second driving device, which drives at least a fuser device, the control device executes operation control that starts the drive of the first driving device before the drive of the second driving device.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: February 16, 2010
    Assignee: Murata Machinery, Ltd.
    Inventors: Akinori Nishida, Takahiro Sasai
  • Patent number: 7664448
    Abstract: An image heating apparatus includes a pressure roller, a belting film to circulate while partially connecting with the pressure roller, a support member to be provided in the belting film and comprises a guide to guide the circulating of the belting film, a nip spring to comprise a nip portion to form a nip between the belting film and the pressure roller, and a support portion to support the nip portion against the support member, and a heater to be provided adjacent to the nip spring and transfer heat to the image through the belting film.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: February 16, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong Woo Lee, Su Ho Shin, Hwan Guem Kim, Tae Gyu Kim
  • Patent number: 7664429
    Abstract: A transfer mechanism includes: a transfer unit having a transfer belt; and a belt contact and separation assembly for bringing the transfer belt into, and separating it away from, an electrostatic latent image support by shifting the position of the transfer unit. The belt contact and separation assembly includes: a multiple number of transfer unit shifters that abut the transfer unit and shift the position of the transfer unit; a multiple number of linkage members that link with the plural transfer unit shifters, correspondingly; an elastic member for coupling the plural linkage members; and a driver for actuating the transfer unit shifters through the linkage members.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: February 16, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroyuki Murai, Toshiki Takiguchi, Junya Masuda, Toshihiko Seike, Kazuhiro Matsuyama
  • Patent number: 7664414
    Abstract: When the temperature of the liquid toner has fluctuated by T1 or more (Step S3: YES), the equation obtained by measuring the liquid toner is modified (Steps S4 through S7). This equation is obtained based on the output voltage value of the concentrated toner liquid sensor 27, which has the same specifications as those of the liquid toner sensor 24, and the output voltage value of the carrier liquid sensor 29, which has the same specifications as those of the liquid toner sensor 24 (S4 through S6). The output voltage value of the liquid toner sensor 24 is entered into the modified equation to calculate the toner solids content of the liquid toner of the storage tank 18 (Step S8). Control of the concentration of the liquid toner is carried out based on the calculated toner solids content (Step S9).
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: February 16, 2010
    Assignee: Kyocera Mita Corporation
    Inventors: Hiroyuki Ueda, Koji Murase, Tomoyuki Oda, Hidenori Takenaka, Nobuhiro Horiuchi, Jumpei Hobo
  • Patent number: 7664450
    Abstract: An image fixing apparatus stably maintains high efficiency in heat generation and reduces excessive heat and loss of electric power consumption for fixing image. In at least one embodiment, the image fixing apparatus includes a magnetic flux generating member to generate a magnetic flux, and a heat member to generate heat with the magnetic flux. The heat member includes a first heat layer and a second heat layer having a relatively higher volume resistivity than the first heat layer, and having different thickness and/or different volume resistivity depending on a position in the width direction of the second heat layer. Portions of the magnetic flux generating member face different sides of the heat member.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: February 16, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Norihiko Aze, Motokazu Hasegawa, Susumu Matsusaka