Responsive To Copy Media Characteristic Patents (Class 399/45)
  • Publication number: 20140161476
    Abstract: A printing apparatus includes a power control unit, a detecting unit, and a determining unit. The power control unit controls power supply to an operation unit, an engine unit, and a controller unit. The detecting unit detects a size of a sheet held in a sheet holding unit. The determining unit determines, after the printing apparatus is shifted to a power saving state which restricts power supply to the operation unit, the engine unit, and the controller unit, whether a size of a sheet specified in a received job and the detected size match each other. Where the determining unit determines that the detected and specified size of the sheets match each other, the power control unit supplies power to the controller engine units while maintaining the restriction on power supply to the operation unit, and shifts the printing apparatus to the power saving state after the job ends.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 12, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Nobuaki Miyahara
  • Patent number: 8750733
    Abstract: A fixing device for thermally fixing image onto recording sheet by causing recording sheet to pass through fixing nip, while heating electromagnetic induction heating layer provided in heating rotation body by flux generated by flux generator including exciting coil located a distance away from circumferential surface of heating rotation body along width direction of heating rotation body. The flux generator includes: magnetic cores arranged to be separated from each other in width direction, to face heating rotation body via exciting coil; holder holding predetermined magnetic cores, arranged in correspondence with non-paper-pass area of heating rotation body, in displaceable state; displacement unit displacing predetermined magnetic cores in predetermined move unit, which is a unit of one magnetic core or a unit of a predetermined number of consecutively placed magnetic cores; and controller controlling displacement unit to displace predetermined magnetic cores in sequence in predetermined move unit.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: June 10, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Etsuaki Urano
  • Patent number: 8750730
    Abstract: An approach is provided for pairing a fuser assembly with a media size and for electronically labeling the fuser assembly for use with the media size. The approach involves causing, at least in part, a fuser assembly having a memory to be tagged with an identifier related to a corresponding media size, the identifier being stored in the memory. The approach also involves determining a media size associated with a print job to be run by a printing system. The approach further involves determining the identifier of an installed fuser assembly. The approach additionally involves causing, at least in part, a comparison between the determined media size associated with the print job and the identifier of the installed fuser assembly to determine if a conflict exists.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: June 10, 2014
    Assignee: Xerox Corporation
    Inventors: Paul Hewitt, Mark Okley, David William Bailey, David Brett, Adrian Robert Tanner, Anthony Geoffrey Painter
  • Patent number: 8744293
    Abstract: An image forming apparatus includes: a photosensitive element; a writing light source; a conveying unit; a light-emitting unit; a detection unit; a writing control unit; and an adjustment unit. The detection unit detects reflected light from a recording medium. The writing control unit controls the writing light source based on operational timing when a signal output from the detection unit turns to a fixed threshold. The adjustment unit acquires information of a gloss level of the recording medium, and adjusts light emission intensity of the light-emitting unit according to the acquired information of the gloss level in such a manner that a signal output from the detection unit when the light-emitting unit irradiates a plain region of the recording medium approximates a certain reference value.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: June 3, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Yoshinori Shirasaki, Tatsuya Miyadera, Tomohiro Ohshima
  • Publication number: 20140147137
    Abstract: An image formation apparatus includes a primary transfer unit configured to transfer a developer image from an image carrier to an intermediate transfer body, a secondary transfer unit configured to transfer the developer image to a recording medium, a voltage application unit configured to apply a voltage to the secondary transfer unit, a voltage controller configured to control the voltage to be applied to the secondary transfer unit by the voltage application unit, a recording medium type detector configured to detect a type of the recording medium, and a recording medium width detector configured to detect a width of the recording medium in a direction orthogonal to a conveyance direction of the intermediate transfer body. The voltage controller controls the voltage to be applied to the secondary transfer unit, based on the detected recording medium type and the detected recording medium width.
    Type: Application
    Filed: November 25, 2013
    Publication date: May 29, 2014
    Applicant: Oki Data Corporation
    Inventor: Hiroshi MIURA
  • Patent number: 8737854
    Abstract: A printing system includes a rotatable transport member that transports a receiver on its obverse. A tackdown unit includes an electrode arranged facing the reverse of the transport member. A source responsive to the control system produces a tackdown current, and a charger spaced apart from the transport member facing the obverse thereof selectively deposits charge on the receiver in response to the tackdown current. A non-contact voltmeter arranged facing the receiver on the obverse after the charger measures a resulting voltage. A control system drives a selected voltage or current through the charger using the source and measures a resulting voltage using the non-contact voltmeter. The selected voltage or current and the measured resulting voltage are used to automatically estimate a capacitance of the receiver.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: May 27, 2014
    Assignee: Eastman Kodak Company
    Inventor: Mark Cameron Zaretsky
  • Patent number: 8736900
    Abstract: In the case where a sheet on which a transparent toner image is to be formed has high glossiness, the transparent toner image is placed in an image formable area except for the area in which the user wishes to increase the glossiness.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: May 27, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Motohide Shiozawa
  • Patent number: 8737853
    Abstract: A fixing device for thermally fixing a developing agent image to a sheet fed in a sheet feeding direction including: a tubular flexible fusing member; a heater; a nip member; a resiliently deformable backup member; and an adjustment mechanism. The fusing member has an inner peripheral surface defining an internal space. The heater, disposed in the internal space, is configured to radiate radiant heat. The nip member, disposed in the internal space, is configured to receive the radiant heat. The inner peripheral surface makes sliding contact with the nip member. The backup member provides a nip region in cooperation with the fusing member upon nipping the fusing member between the backup member and the nip member. The adjustment mechanism is configured to move the backup member between a first position and a second position different from the first position in the sheet feeding direction to adjust the sheet feeding direction.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: May 27, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kei Ishida, Masahito Kajita
  • Patent number: 8731423
    Abstract: An image forming apparatus includes: an image forming section including a fixing device configured to fix an image on a sheet; an acquiring section configured to acquire setting information of printing target data; a determining section configured to determine a first time on the basis of the setting information acquired by the acquiring section; and an output section configured to output a control signal to the fixing device to set a heat accumulation time of the fixing device to the first time determined by the determining section.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: May 20, 2014
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Masaya Arakawa
  • Patent number: 8730007
    Abstract: A method for controlling an image processing apparatus configured to output image data includes accepting, from a user, selection about whether to permit inputting biometric information, and performing control such that outputting the image data is permitted in a case where the selection for permitting inputting the biometric information is made, and the outputting the image data is prohibited in a case where the selection for permitting inputting the biometric information is not made.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: May 20, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ritsuko Otake
  • Patent number: 8725015
    Abstract: An image forming apparatus includes: an image bearing member; a development device; a speed varying unit that can vary a speed of a developer bearing member; a sensing portion that senses an environmental temperature around the development device; and a controller that can perform a mode in which, compared with a period which an image forming region of the image bearing member passes through the developing region, the rotation speed of the developer bearing member slows down a period which a non-image forming region of the image bearing member passes through the developing region, wherein based on sensing result of the sensing portion, the controller performs the mode when the environmental temperature is higher than a predetermined value, and the controller does not perform the mode when the environmental temperature is lower than the predetermined value.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: May 13, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toru Kabashima
  • Patent number: 8725041
    Abstract: An image forming apparatus including, a photosensitive body for carrying toner images, a transfer section for nipping the recording sheet at a position facing the photosensitive body and transferring the toner images carried on the photosensitive body onto a recording sheet, a driving section for driving the photosensitive body, and a control section for giving instructions to the driving section to conduct a velocity control to rotate the photosensitive body at a predetermined velocity, wherein the control section sets a gain of velocity control to be greater than normal condition, at a time which is at least one of a time when the recording sheet enters the transfer section, or a time when the recording sheet separates from the transfer section.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: May 13, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Katsunori Takahashi, Masashi Sugano, Akinori Kimata, Akifumi Isobe, Kenji Tamaki, Satoshi Shimao
  • Patent number: 8718523
    Abstract: A heating and pressurizing device includes a heating and pressurizing unit that includes a pair of members in contact with each other, at least one of the pair of members being to be heated, and that heats and pressurizes a medium between the pair of members, a change unit that changes a contact pressure between the pair of members by changing a relative position of the pair of members according to a control signal, and a controller that sends the control signal to the change unit and includes a detecting unit that detects a difference between a target distance and an actual distance. The target distance corresponds to a predetermined distance, and the actual distance corresponds to a distance of which the pair of members are positioned after the controller sends a predetermined control signal set as corresponding to the predetermined distance as the control signal to the change unit.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: May 6, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Noriyuki Miyoshi
  • Patent number: 8711439
    Abstract: A scanner enables full productivity and individual image size detection, without user intervention for mixed size originals in both simplex and duplex scanning modes. The scanner provides high-productivity single pass scanning while preserving the image size for each of the document scanned. In addition, the scanner may support duplex scanning by adding a second image sensor, for example, in the document handler. Methods of scanning are also provided.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: April 29, 2014
    Assignee: Xerox Corporation
    Inventors: Aron Nacman, Seth H. Groder, John C. Guarrera, Dawn Marie LaPietra, Whynn Victor Lovette, Daniel A. Mohabir, John F. Seward
  • Publication number: 20140112672
    Abstract: An image forming apparatus includes a fixing unit configured to heat and fix a measurement image formed by an image forming unit to a sheet, a measurement unit arranged downstream of the fixing unit in a conveyance direction of the sheet and configured to measure color of the fixed measurement image, a conversion unit configured to convert a measurement result of the measurement unit into a measurement result at a predetermined temperature based on conversion setting information set in advance, a setting unit configured to set a mode for generating the conversion setting information, and a generation unit configured to generate the conversion setting information by causing the image forming unit to form the measurement image on the sheet, causing the fixing unit to fix the formed measurement image, and causing the measurement unit to repeatedly measure the fixed measurement image in response to setting of the mode.
    Type: Application
    Filed: October 21, 2013
    Publication date: April 24, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Tomohisa Itagaki
  • Publication number: 20140105625
    Abstract: The timing of obtaining an output value for use in a determination of a recording medium is generated from a received ultrasonic wave and a waveform generated by delaying the ultrasonic wave, whereby it is possible to reduce an influence of a reflection wave from the peripheral members and an influence of a change in the environment to improve the accuracy of determination of the recoding medium.
    Type: Application
    Filed: December 19, 2013
    Publication date: April 17, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Masaru Aoki
  • Patent number: 8699057
    Abstract: An arrangement which is capable of copying a clear toner image formed by a clear toner. In the image forming apparatus, a scanner section of an MFP reads an original. A CPU of the MFP determines whether or not position information indicative of a position where a clear-toner image formed by a clear toner is formed is contained in an image of the original read by the scanner section. When the CPU determines that the position information indicative of the position where the clear-toner image is formed is contained in the image of the original, the CPU forms the image of the original and the clear-toner image based on the position information.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: April 15, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hajime Ohno
  • Patent number: 8699904
    Abstract: A fixing device includes a rotatable first nip formation member, a rotatable second nip formation member, a first heater, a second heater, and a controller. The second nip formation member is provided under the first nip formation member to contact the first nip formation member to form a fixing nip portion between the first nip formation member and the second nip formation member. The first heater heats the first nip formation member. The second heater heats the second nip formation member. The controller supplies a portion of power to the second heater and the remainder of power to the first heater when a plurality of sheets having a sheet weight not greater than about 100 g/m2 passes through the fixing nip portion continuously.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: April 15, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Masami Okamoto, Jun Okamoto, Kazuo Suno, Kenji Nozawa, Naoto Suzuki, Syoichi Kaneko, Yoshihiro Sonohara, Keisuke Kubota, Takashi Kagami, Hiroyuki Shimada
  • Patent number: 8693010
    Abstract: An image forming apparatus includes a first image forming unit, a second image forming unit. In combined processing to perform two types of processing including one-sided image formation and two-sided image formation, if the one-sided image formation is performed, an image is formed on one side of the sheet by the second image forming unit.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: April 8, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mika Sumii, Hiroshige Inoue
  • Patent number: 8693940
    Abstract: A control method for a control apparatus includes obtaining an amount of a recording material applied on a first area of a sheet and an amount of a recording material applied on a second area of the sheet on the basis of image data recorded on the sheet stacked on a stacking unit; and performing control, in a case where a plurality of sheets are stacked on the stacking unit, so that a difference between a total amount of the recording material applied on the first area of the sheets and a total amount of the recording material applied on the second area of the sheets does not exceed a predetermined value on the basis of the obtained amount of the recording material. With this method, a limit of the number of stacked sheets is relieved while stability of the stacked sheets is maintained.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: April 8, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroyuki Amano
  • Patent number: 8693901
    Abstract: A transfer device includes a transfer device, a facing member, and a prepressing member. The transfer member transfers a toner image, which is carried on an intermediate transfer member, to a recording medium. The facing member is disposed so as to be in pressed contact with the transfer member with the intermediate transfer member therebetween. The prepressing member is disposed so as to be in pressed contact with the transfer member with the intermediate transfer member therebetween at a position that is upstream of a contact section in which the facing member is in pressed contact with the transfer member and that is immediately behind a position at which the toner image starts to come into contact with the recording medium. A pressure applied by the prepressing member is lower than a pressure with which the facing member is in pressed contact with the transfer member.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: April 8, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Sho Watanabe, Tomoaki Yoshioka
  • Patent number: 8693911
    Abstract: An image forming apparatus according to an embodiment includes: an image carrier; a transfer device which transfers a toner image formed on the image carrier onto a recording medium; a resistance measuring device which causes a current to flow through the recording medium before transferring the toner image and measures the resistance of the recording medium; and a setting unit which sets a condition of the transfer on the basis of the measurement result of the resistance of the recording medium. The resistance measuring device includes an electric shock prevention member which prevents the current from flowing to a user through the recording medium during the measurement of the resistance of the recording medium.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: April 8, 2014
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Mitsutoshi Watanabe, Masato Ogasawara
  • Publication number: 20140093260
    Abstract: A recording material detection apparatus having a detecting device configured to detect a surface state of a recording material on the basis of reflected light from a surface of the recording material includes a reference surface to be irradiated with light from a light source, the detecting device includes a light-shielding portion configured to control conditions for detecting information relating to the surface state of the recording material on the basis of the reflected surface from the reference surface, and cover a portion of the reference panel other than the reference surface so as to prevent the light from the light source from being reflected from the portion of the reference panel other than the reference surface and being received by the light-receiving unit.
    Type: Application
    Filed: December 4, 2013
    Publication date: April 3, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Norio Matsui, Shoichi Koyama, Tsutomu Ishida, Shun-ichi Ebihara
  • Publication number: 20140093259
    Abstract: An image forming apparatus includes an image carrier, a transfer member and a cleaning member. The image forming apparatus: determines whether the electric resistance of a recording medium is low or high; applies a first transfer bias to the transfer member if the electric resistance is low; applies a second transfer bias to the transfer member if the electric resistance is high; applies a first cleaning bias to the cleaning member if the electric resistance is low; and applies a second cleaning bias to the cleaning member so that a potential difference between a portion of a surface of the image carrier against which the cleaning member is rubbed and the cleaning member becomes smaller than that in a case of applying the first cleaning bias if the electric resistance is high.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 3, 2014
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Masatoshi Shiraki
  • Publication number: 20140086605
    Abstract: An image forming apparatus includes an image carrier, a transfer unit, and a control unit. The image carrier has a surface to bear a toner image thereon. The transfer unit has a transfer member to transfer the toner image onto a recording sheet conveyed in a conveyance direction for trailing-end borderless image formation and duplex image formation. The transfer unit is configured to form the toner image on the recording sheet without forming a margin at a trailing end of the recording sheet in the conveyance sheet in the trailing-end borderless image formation. The transfer unit is configured to form the toner image on front and back faces of the recording sheet in the duplex image formation. When a width of the toner image formed in a borderless image area of the recording sheet in the trailing-end borderless image formation is smaller in a direction perpendicular to the conveyance direction than a threshold value, the control unit permits the duplex image formation.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 27, 2014
    Inventors: Ken YOSHIDA, Keiko Matsumoto, Tomohide Takenaka, Daisuke Ito, Daisuke Takahashi, Masahiro Katoh, Yoichi Sakurai
  • Publication number: 20140086604
    Abstract: An image forming apparatus includes an image forming unit, an image carrier carrying a developer image, a transfer unit for transferring the developer image to a recording medium, a voltage supplying unit for supplying a transfer voltage to the transfer unit, a transfer current measuring unit for measuring a transfer current value when a prescribed voltage is applied while no recording medium exists in the transfer unit, a resistor serially coupled between the transfer current measuring unit and the transfer unit, a memory unit for memorizing electrical character information of the recording medium, and a controller for controlling the transfer voltage where the developer is transferred to the recording medium, based on a consequence measured by the transfer current measuring unit, a recording medium width in association with the recording medium type, the electrical character information, and a resistance value of the resistor, to adjust a secondary transfer current value.
    Type: Application
    Filed: September 20, 2013
    Publication date: March 27, 2014
    Applicant: OKI DATA CORPORATION
    Inventor: Yoshitaka MIYAZAKI
  • Publication number: 20140079418
    Abstract: An image forming apparatus includes a power source to output a voltage having an alternating waveform to transfer a toner image from an image bearing member to a recording medium. A time-averaged value (Vave) of the voltage has a polarity in a transfer direction, in which the toner image is transferred from the image bearing member to the recording medium, and an absolute value of the time-averaged value is greater than a midpoint value (Voff) of the voltage intermediate between a maximum value and a minimum value of the voltage. As a roughness of the recording medium increases, a duty ratio (Duty) expressed by A/(A+B) is reduced, where A is an area of the waveform of the voltage in a return direction opposite the transfer direction relative to the midpoint value in one cycle and B is an area in the transfer direction relative to the midpoint value.
    Type: Application
    Filed: September 10, 2013
    Publication date: March 20, 2014
    Inventors: Shinya TANAKA, Hirokazu Ishii, Yasunobu Shimizu, Keigo Nakamura
  • Patent number: 8675239
    Abstract: In a method for printing a recording medium, an object type of image elements to be printed is determined for a corresponding print page using digital data. In generation of a bitmap for generation of a latent image for a first print process or a second print process, dependent on the object type image points are adapted in a direction of at least one main axis corresponding to an expected shrinkage. The recording medium is printed with a first toner image in a first print process. The first toner image is fixed on the recording medium in the fixing device where the recording medium shrinks along said at least one main axis. In the second print process, a second toner image is applied on the same recording medium in the direction of the main axis in a form compressed relative to that of the first print process.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: March 18, 2014
    Assignee: Océ Printing Systems GmbH
    Inventors: Dieter Jörgens, Herbert Gibisch, Peter Thiemann
  • Patent number: 8670140
    Abstract: A transient document management system can include a transient document identifier placement module for placing a transient document identifier on a transient physical document, a transient document information retrieval module for extracting information from the transient physical document, and a transient document processing module for performing data processing based on the information extracted from the transient physical document.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: March 11, 2014
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Victoria Mary Elizabeth Bellotti, Eric J. Shrader
  • Patent number: 8655211
    Abstract: A fixing device includes a fixing belt; a pressing rotary body disposed outside a loop formed by the fixing belt; a nip formation pad disposed inside the loop formed by the fixing belt and pressed against the pressing rotary body via the fixing belt to form a fixing nip between the pressing rotary body and the fixing belt through which a recording medium bearing a toner image is conveyed. The nip formation pad includes a protrusion disposed downstream from the fixing nip in a conveyance direction of the recording medium and protruding toward the pressing rotary body without contacting the pressing rotary body. The fixing device further includes a pressing rotary body mover to contact and move the pressing rotary body bidirectionally in the conveyance direction of the recording medium to move the fixing nip toward and away from the protrusion.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: February 18, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Ippei Fujimoto, Yuji Arai, Hiromasa Takagi, Yoshiki Yamaguchi, Naoki Iwaya, Arinobu Yoshiura, Toshihiko Shimokawa, Tetsuo Tokuda, Yutaka Ikebuchi, Kenji Ishii, Takahiro Imada, Hiroshi Yoshinaga, Takuya Seshita, Hajime Gotoh, Masaaki Yoshikawa
  • Patent number: 8655210
    Abstract: The image forming apparatus includes a photosensitive drum, developer bearing members to develop a latent image formed on the photosensitive drum into a toner image while bearing developer, a secondary transfer roller to transfer the toner image to a sheet, an operation apparatus to which smoothness of the sheet having the toner image transferred, and a CPU which controls to decrease fog elimination potential difference between non-image portion potential of the photosensitive drum and direct current component potential of bias applied to developer bearing members in a case that smoothness inputted to the operation apparatus is information that the smoothness of the sheet having the toner image formed is equal to or higher than a predetermined smoothness as compared to a case of being lower than the predetermined smoothness.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: February 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideki Fujita
  • Publication number: 20140037308
    Abstract: An image heating apparatus includes: a rotatable heating member for heating a toner image formed on a recording material by using a toner containing a parting agent; an exciting coil for causing the rotatable heating member to generate heat by electromagnetic induction heating; a magnetic flux suppressing member for suppressing a part of magnetic flux acting from the exciting coil onto the rotatable heating member; a moving mechanism for moving the magnetic flux suppressing member depending on a width size of the recording material; a motor for operating the moving mechanism; and an executing portion capable of selectively executing an operation in a first mode in which a first current is supplied to the motor and an operation in a second mode in which a second current larger than the first current is supplied to the motor.
    Type: Application
    Filed: July 19, 2013
    Publication date: February 6, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masahiro Nawa, Keisuke Mogi
  • Publication number: 20140037301
    Abstract: If the elapsed time since a sheet was stored in a sheet storage unit is less than or equal to a threshold value, control is performed such that the sheet is heated by a fixing unit before an image is transferred to the sheet, and if the elapsed time since the sheet was stored in the sheet storage unit exceeds the threshold value, control is performed such that processing for heating the sheet with the fixing unit before the image is transferred to the sheet is not performed.
    Type: Application
    Filed: July 25, 2013
    Publication date: February 6, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hirotomo Tanaka
  • Publication number: 20140037310
    Abstract: An image forming apparatus for detecting surface conditions of a recording sheet on which an image is formed, includes a light source configured to emit a first light beam and a second light beam, an image capture device configured to capture a first image of a surface of the recording sheet illuminated with the first light beam and a second image of the surface of the recording sheet illuminated with the second light beam. A first straight line including a ray in a center of the first light beam and a second straight line including a ray in a center of the second light beam intersect with each other, when each straight line is projected onto the surface of the recording sheet, and a detection device configured to detect information about the unevenness on the surface of the recording sheet based on the first image and the second image.
    Type: Application
    Filed: October 4, 2013
    Publication date: February 6, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shun-ichi Ebihara, Tsutomu Ishida, Shoichi Koyama, Norio Matsui
  • Publication number: 20140037309
    Abstract: An image forming apparatus includes (i) a feeding portion; (ii) an image forming portion; (iii) a fixing portion, wherein the fixing portion includes: (iii-i) a rotatable member; (iii-ii) an exciting coil configured to cause the rotatable member to generate heat by electromagnetic induction heating; (iii-iii) a magnetic flux suppressing member configured to suppress a part of magnetic flux acting from the exciting coil to the rotatable member; and (iii-iv) a motor for moving the magnetic flux suppressing member depending on a width size of the sheet; and (iv) a controller configured to variably control a feeding interval of the sheet by the feeding portion so that a number of times of movement per unit time of the magnetic flux suppressing member is not more than a predetermined value when image formation of a plurality of sheets different in width size is continuously effected.
    Type: Application
    Filed: July 23, 2013
    Publication date: February 6, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Masahiro Nawa
  • Patent number: 8639138
    Abstract: An image formation device includes a receiving section, a formation section, a fixing section, a switching section, and a controller. The receiving section receives image formation data including image data, and sheet data which includes designations of a sheet and a corresponding fixing pressure. The formation section forms a toner image on the sheet. The fixing section fixes the toner image on the sheet. The switching section switches the fixing pressure between a first or second fixing pressure. When the fixing pressure is switched to the second fixing pressure and the fixing pressure designated by the sheet data is the first fixing pressure, the controller performs a mandatory image formation that includes a low-speed control that conveys the sheet at a speed lower than that for the first fixing pressure, and/or a toner suppression control that performs image formation with a smaller amount of toner than in normal.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: January 28, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tetsuya Sonoda, Shinya Watanabe, Hirotaka Udagawa
  • Patent number: 8639137
    Abstract: An image forming apparatus includes an intermediary transfer member having an elastic layer; a toner image forming portion for forming a toner image for an image to be carried on the intermediary transfer member; a transfer member, which presses the intermediary transfer member, for transferring the toner image for the image from the intermediary transfer member onto a recording material; a pressing mechanism capable of changing pressure applied from the transfer member to the intermediary transfer member; and a controller for controlling the toner image forming portion so that a length of the toner image for the image on the intermediary transfer member with respect to a rotational direction of the intermediary transfer member is decreased with an increase of the pressure.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: January 28, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuusuke Torimaru
  • Patent number: 8634754
    Abstract: A control apparatus configured to control an image forming system, in forming a transparent image so as to cover color images fixed on a sheet, applies a transparent toner on an area on which an image can be formed and which is other than an area that a user desires to increase the glossiness thereof.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: January 21, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Motohide Shiozawa
  • Patent number: 8630556
    Abstract: A fixing device for fixing a toner image on a recording medium includes a fixing roller to rotate in a predetermined direction of rotation, a pressing roller to rotate and contact an outer circumferential surface of the fixing roller to form a nip between the pressing roller and the fixing roller through which the recording medium bearing the toner image passes to fix the toner image by heat and pressure, a pressing lever to hold both lateral end portions of the pressing roller, and a cam disposed on a camshaft, to rotate the pressing lever to change the position of the pressing roller. Rotation of the cam in a first, pressing direction enables the pressing roller to pressingly contact the fixing roller. Rotation of the cam in a second direction opposite the pressing direction enables the pressing roller to separate from the fixing roller.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: January 14, 2014
    Assignee: Ricoh Company, Ltd.
    Inventor: Masamichi Yamada
  • Patent number: 8626013
    Abstract: A recording material detection apparatus having a detecting device configured to detect a surface state of a recording material on the basis of reflected light from a surface of the recording material includes a reference surface to be irradiated with light from a light source, the detecting device includes a light-shielding portion configured to control conditions for detecting information relating to the surface state of the recording material on the basis of the reflected surface from the reference surface, and cover a portion of the reference panel other than the reference surface so as to prevent the light from the light source from being reflected from the portion of the reference panel other than the reference surface and being received by the light-receiving unit.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: January 7, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Norio Matsui, Shoichi Koyama, Tsutomu Ishida, Shun-ichi Ebihara
  • Patent number: 8626011
    Abstract: An image forming apparatus includes a rotatable image bearing member for bearing a toner image; a transfer member constituting a transfer portion for transferring the toner image formed on the image bearing member onto a recording material; a voltage source for applying, to the transfer member, a voltage in the form of superimposed DC voltage and AC voltage; a controller for controlling the voltage source such that a duty ratio of the AC voltage is changed in accordance with a kind of the recording material; and an executing portion for executing an operation in an image forming mode in which the toner image is transferred from the image bearing member onto the recording material with the duty ratio controlled by the controller.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: January 7, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshiyuki Yamada
  • Patent number: 8626012
    Abstract: An image forming apparatus includes a toner image forming device that forms a toner image by using at least one of a plurality of toners that include a color toner and a first transparent toner; an intermediate transfer body to which the toner image is transferred; a second transfer unit that transfers the toner image to a recording medium; and a controller that acquires characteristic information that represents a characteristic of in-plane resistance variation of a currently-used recording medium before the toner image forming device forms the toner image, and if the characteristic information indicates that the in-plane resistance variation of the currently-used recording medium is larger than a predetermined value, controls the toner image forming device so that the toner image forming device forms a transparent toner image in such a way that a color toner image is superimposed on the transparent toner image on the intermediate transfer body.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: January 7, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Tomoaki Yoshioka
  • Patent number: 8626014
    Abstract: In an image forming apparatus that separates a thin recording material by pushing up a transfer belt, if a position where a thick recording material separates from the transfer belt is far from a leading end of a recording-material guide, conveyability of the separated thick recording material after separation becomes stable. A stretching member is provided downstream of a push-up means and upstream of the recording-material guide in a recording-material conveying direction, and the stretching member separates a thick recording material from the transfer belt.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: January 7, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yutaka Kakehi
  • Publication number: 20130343773
    Abstract: An approach is provided for selectively loading a cleaning web useful in printing based on various media attributes of a media that is to be processed by a fuser unit. The approach involves determining one or more media attributes associated with a media to be processed by a fuser unit, the fuser unit comprising one or more heat rolls. The approach also involves determining at least one of the one or more media attributes meets a predetermined criteria. The approach further involves causing, at least in part, a cleaning web to contact at least one of the one or more heat rolls based, at least in part, on the determination that one or more media attributes meets the predetermined criteria.
    Type: Application
    Filed: June 21, 2012
    Publication date: December 26, 2013
    Applicant: XEROX CORPORATION
    Inventors: Melissa Ann MONAHAN, Erwin RUIZ, Steven RUSSEL, Jeffrey Nyyssonen SWING, Christopher Alan JENSEN
  • Publication number: 20130343770
    Abstract: An approach is provided for pairing a fuser assembly with a media size and for electronically labeling the fuser assembly for use with the media size. The approach involves causing, at least in part, a fuser assembly having a memory to be tagged with an identifier related to a corresponding media size, the identifier being stored in the memory. The approach also involves determining a media size associated with a print job to be run by a printing system. The approach further involves determining the identifier of an installed fuser assembly. The approach additionally involves causing, at least in part, a comparison between the determined media size associated with the print job and the identifier of the installed fuser assembly to determine if a conflict exists.
    Type: Application
    Filed: June 21, 2012
    Publication date: December 26, 2013
    Applicant: XEROX CORPORATION
    Inventors: Paul HEWITT, Mark OAKLEY, David William BAILEY, David BRETT, Adrian Robert TANNER, Anthony Geoffrey PAINTER
  • Patent number: 8611775
    Abstract: There is provided an image forming apparatus including: a forming unit that forms a toner image according to image information for an image to be formed on a sheet; a fixing unit that fixes the toner image formed on the sheet; a switching unit that switches a fixing pressure of the fixing unit by an operation; a stopping unit that, when the fixing pressure is switched to fix at a second fixing pressure lower than a predefined first fixing pressure, stops conveying a final sheet before the final sheet is fed after being fixed; and an instructing unit that, when the stopping unit stops conveying the final sheet, instructs switching to the first fixing pressure.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: December 17, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hirotaka Udagawa, Shinya Watanabe, Tetsuya Sonoda
  • Patent number: 8611772
    Abstract: A recording medium imaging apparatus includes an irradiation unit configured to irradiate a recording medium with light, an imaging unit configured to capture reflected light which is irradiated by the irradiation unit and reflected by the recording medium as a surface image, and a reference plate which includes a background that reflects light irradiated by the irradiation unit, and a mark that has a different reflectance ratio to the background, wherein the imaging unit captures reflected light reflected by the reference plate as a surface image and includes a control unit that determines a type of the recording medium based on the surface image of the reference plate and the surface image of the recording medium.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: December 17, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masaru Aoki
  • Patent number: 8610315
    Abstract: This invention allows completely cutting power supply to a circuit that has become dysfunctional because of blowout of a fuse. To accomplish this, a circuit includes a fuse connected to one supply line of an AC power supply, a switching unit connected to the other supply line of the AC power supply, a detection unit configured to detect blowout of the fuse, and a control unit configured to turn off the switching unit when the detection unit detects blowout of the fuse.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: December 17, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takahiro Ushiro
  • Patent number: 8606128
    Abstract: An image forming apparatus according to an embodiment includes a charging device that charges an electric charge to an image carrier, a developing device supplying the image carrier with a developer, and a transfer device that transfers a toner image formed on the image carrier by a developing device onto a recording medium. The apparatus further includes a control unit, discriminates between a first mode of forming an image on a first recording medium of a first thickness and a second mode of forming an image on a second recording medium thinner than the first recording medium to control a developing contrast electric potential, and controls a magnitude of the developing contrast electric potential in the second mode so as to be lower than the first mode.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: December 10, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Sunao Takenaka
  • Publication number: 20130322900
    Abstract: An image forming apparatus includes a fixing device that is attachable to and detachable from an apparatus body and fixes a developer image onto a recording medium; a setting unit that is provided in the fixing device and in which a size of a recording medium to be used in the fixing device is set; an acquiring unit that is provided in the apparatus body and acquires size information of a recording medium onto which the developer image is to be fixed; a determining unit that compares the size of the recording medium set in the setting unit with the size of the recording medium acquired by the acquiring unit so as to determine whether or not a fixing process is performable by the fixing device; and a notifying unit that at least provides notification of a negative determination result obtained by the determining unit.
    Type: Application
    Filed: December 7, 2012
    Publication date: December 5, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Norio OGAWAHARA, Kenji KANAI