Responsive To Copy Media Characteristic Patents (Class 399/45)
  • Patent number: 10444679
    Abstract: An image forming apparatus includes a sheet transport path, a toner image transfer section along the sheet transport path at which a toner image is transferred to a sheet conveyed along the sheet transport path, a heating unit downstream from the toner image transfer section in a sheet transporting direction, the heating unit having a plurality of heating members arranged along a sheet width direction, and a control unit. The control unit is configured to determine locations of end portions of a label on the sheet in the sheet width direction, and during heating of the sheet by the heating unit, control heating members at locations facing the end portions of the label to generate less heat than the one or more of the other heating members.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: October 15, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Isao Yahata
  • Patent number: 10430133
    Abstract: An image forming system includes: a server accepting a print job from a client apparatus; and an image forming apparatus receiving an order for the print job from the server, the image forming apparatus including: a sheet feeding tray accommodating a sheet; a hardware processor determining to receive an order for a print job accepted by the server when a first and second conditions are satisfied; and an image former forming a page image based on the print job accepted by the server and a page image based on the print job being accepted specifying the sheet of the same size as that of the sheet specified, by allocating the page images in parallel to the sheet of twice the size of the sheet specified, when it is determined by the hardware processor that the order for the print job accepted by the server is received.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: October 1, 2019
    Assignee: Konica Minolta, Inc.
    Inventor: Yoshifumi Wagatsuma
  • Patent number: 10416587
    Abstract: A charging device includes a first charging unit and a second charging unit. The first charging unit electrostatically charges a surface of an image bearing member that comes into contact with a medium onto which an image is to be ultimately transferred. The first charging unit is disposed in correspondence with an entire region of the image bearing member in a first scanning direction. The second charging unit is disposed in an overlapping region where a non-passing region of a small-width medium and a passing region of a maximum-usable-width medium overlap when viewed in the first scanning direction. The small-width medium has a width smaller than a maximum usable width of the maximum-usable-width medium. The second charging unit electrostatically charges the overlapping region.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: September 17, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Kazuyasu Ohazama
  • Patent number: 10401766
    Abstract: An image forming apparatus includes a fixing rotator rotatable in a predetermined direction of rotation, over which a recording medium is conveyed, and a heater to heat the fixing rotator. A temperature detector detects a temperature of the fixing rotator. A controller performs a primary productivity control to define a primary productivity rate of printing per unit time based on the temperature of the fixing rotator that is detected by the temperature detector. The controller calculates an amount of power suppliable to the heater and performs a secondary productivity control simultaneously with and separately from the primary productivity control. The secondary productivity control defines a secondary productivity rate of printing per unit time based on the amount of power suppliable to the heater. The controller selects one of the primary productivity rate and the secondary productivity rate whichever is lower as a productivity rate of the image forming apparatus.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: September 3, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryohhei Sugiyama, Hiroshi Ono, Hironori Yamaoka, Motoyoshi Yamano, Yoshikuni Sasaki, Tetsuo Tokuda
  • Patent number: 10359723
    Abstract: A fixing device has a fixing member, a pressing member, a pressing mechanism, a pressure changing mechanism, and a moving mechanism. The fixing member has a fixing belt. The pressing member forms a fixing nip portion by making contact with the fixing member. The pressing mechanism presses the pressing member against the fixing member to apply a nip pressure to the fixing nip portion. The pressure changing mechanism changes the nip pressure. The moving mechanism moves the fixing member in a sheet width direction which is perpendicular to a sheet conveying direction. The pressing mechanism has a holding member rotatably holding the pressing member and held swingably in such directions as to approach and recede from the fixing member. The moving mechanism moves the fixing member in the sheet width direction in coordination with the nip pressure being applied or removed by the pressure changing mechanism.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: July 23, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Takehiro Sato
  • Patent number: 10308457
    Abstract: A capacitive sensing system based on projected self-capacitance is suitable for use in printing systems/products to sense paper tray status. In example embodiments, a capacitive sensing system is adapted for sensing the condition/characteristics of paper in the paper tray, such as paper size, stack height and page count and paper dielectric. The capacitive sensing system can be configured with one or more shielded capacitive sensors incorporated into the paper tray, and oriented relative to the paper according to the paper condition/characteristic sensed.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: June 4, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Evgeny Fomin, Alfred Gomes, Domenico Granozio, Matthew Christopher Kessler, Scott D. Kulchycki
  • Patent number: 10300712
    Abstract: A drying device includes a heater, a supporter, a controller, and a temperature detector. The heater heats a medium. The supporter is disposed opposite the heater to support the medium. The controller turns on the heater while the medium is conveyed, and turns off the heater when the medium is stopped. The temperature detector detects a temperature of the supporter. The controller is connected to the temperature detector to turn off the heater when the temperature detected with the temperature detector is a predetermined temperature or higher.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: May 28, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Wataru Sakamoto, Ken Onodera, Toshihiro Yoshinuma
  • Patent number: 10289056
    Abstract: When executing a job which is a series operations for forming images on a single or a plurality of transfer materials and outputting the transfer material(s), started by a start instruction, a control device switches a polarity of a voltage applied by a first transfer power source in response to a switching of a polarity of a voltage applied by a charging power source, and switches a voltage applied by a second transfer power source from a first voltage to a second voltage which is larger in absolute value than the first voltage.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: May 14, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yu Izaki, Tomoaki Nakai, Yusaku Iwasawa, Takamitsu Soda
  • Patent number: 10281855
    Abstract: An image forming apparatus includes an image fixing unit to pass a sheet carrying an unfixed toner image on a first side. The image fixing unit includes: a first fixing section adjacent to the first side of the sheet; a first heating section to heat the first fixing section; a second fixing section adjacent to a second side opposite to the first side of the sheet; and a second heating section to heat the second fixing section. The image forming apparatus further includes: sheet feeding trays holding sheets; a storage unit storing fixing temperatures of the fixing sections preset for each type of the sheets in the sheet feeding trays; and a controller to select standby temperatures from the fixing temperatures, based on temperature profiles of the fixing sections, and to instruct the heating sections to respectively maintain the fixing sections at the selected standby temperatures during a standby mode.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: May 7, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Taizou Oonishi, Toru Komatsu
  • Patent number: 10274876
    Abstract: A fusing apparatus includes a substrate having a first surface and a second surface, the second surface being opposite the first surface on the substrate, a first resistive trace and a second resistive trace, the first and second resistive traces being disposed adjacent each other along the first surface of the substrate in a length-wise direction thereof. A resistance of the first resistive trace is less than a resistance of the second resistive trace.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 30, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Jichang Cao, Alexander Johannes Geyling, Russell Edward Lucas
  • Patent number: 10268153
    Abstract: An image forming apparatus includes an image forming unit including an image carrier, a developing device that includes a developer containing a toner, and a cleaning device including a blade; and a transfer device. The toner contains toner particles having a volume-average particle size of 3 ?m or more and 5 ?m or less, a spherical inorganic external additive having a number-average particle size of 80 nm to 200 nm, and an organic component. In the cleaning device, an external additive residue in or near a contact region between the image carrier and the blade contains the organic component and an inorganic component, the area ratio of the organic component to the inorganic component is 3/7 or more and 7/3 or less, and the area ratio of the inorganic component that is spherical to the external additive residue is 30% or more.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: April 23, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Makoto Kamisaki, Manabu Furuki, Naoki Ota, Tatsuhiro Igarashi, Yasuhisa Morooka, Jun Sekiya
  • Patent number: 10261459
    Abstract: An image forming apparatus includes a transfer unit, a container, and a calculator. The transfer unit transfers to at least one recording medium at least one toner image formed in accordance with image data without margins set along edges of the at least one recording medium. The container contains toner collected from the transfer unit. The calculator calculates an amount of the toner of parts of the at least one toner image outside the edges of the at least one recording medium. A time period during which the container is able to be used is calculated in accordance with an accumulated amount of the toner calculated by the calculator.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: April 16, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masahiro Katahira, Yoshinori Takahashi, Yasuto Okabayashi
  • Patent number: 10234805
    Abstract: An image forming apparatus includes an image forming unit, a transmission unit, a reception unit, a control unit configured to obtain a time period until the reception unit receives a first ultrasonic wave via a first recording material and an amplitude value thereof at a reference temperature, obtain a time period until the reception unit receives a second ultrasonic wave via a second recording material and an amplitude value thereof at a different temperature, control an image formation condition for forming the image on the first recording material on the basis of the amplitude value of the first ultrasonic wave, obtain a difference time period between reception of the first and second ultrasonic waves, and control an image formation condition for forming the image on the second recording material on the basis of the difference time period and the amplitude value of the second ultrasonic wave.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: March 19, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuhei Watanabe, Tsutomu Ishida
  • Patent number: 10152006
    Abstract: A fixing device includes a rotatable endless belt formed into a loop and a heater disposed opposite the endless belt to heat the endless belt. A nip formation pad is disposed inside the loop formed by the endless belt. The nip formation pad includes a metallic thermal equalizer extending in an axial direction of the endless belt. A rotatable pressure rotator presses against the nip formation pad via the endless belt to form a fixing nip between the endless belt and the pressure rotator, through which a recording medium bearing a toner image is conveyed. The pressure rotator includes an increased tackiness portion disposed at a lateral end of the pressure rotator in an axial direction of the pressure rotator to transmit a driving force to the endless belt. The increased tackiness portion is disposed opposite the thermal equalizer of the nip formation pad.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: December 11, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasunori Ishigaya, Yutaka Ikebuchi, Kazuya Saito, Keitaro Shoji, Ryohei Matsuda, Hiromasa Takagi, Ryuuichi Mimbu, Toshihiko Shimokawa
  • Patent number: 10115043
    Abstract: A computer communicably coupled to an image forming apparatus sends paper information specified for a print job, and a print setting information that is used when the paper information does not match any one of a plurality of paper information of the paper set in a plurality of trays of the image forming apparatus. A processor of the image forming apparatus determines the paper on which an image specified for the print job is formed based at least in part on the paper information specified for the print job, the plurality of paper information of the paper set in the plurality of trays and the print setting information.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: October 30, 2018
    Assignee: Ricoh Company, Ltd.
    Inventor: Nozomi Sawada
  • Patent number: 10108119
    Abstract: An image forming apparatus includes a sheet transport path, a toner image transfer section along the sheet transport path at which a toner image is transferred to a sheet conveyed along the sheet transport path, a heating unit downstream from the toner image transfer section in a sheet transporting direction, the heating unit having a plurality of heating members arranged along a sheet width direction, and a control unit. The control unit is configured to determine locations of end portions of a label on the sheet in the sheet width direction, and during heating of the sheet by the heating unit, control heating members at locations facing the end portions of the label to generate less heat than the one or more of the other heating members.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: October 23, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Isao Yahata
  • Patent number: 10088781
    Abstract: An image forming apparatus includes a transfer member configured to abut against an image carrier for carrying a toner image to form a transfer nip; and a power supply configured to output a bias voltage for transferring the toner image on the image carrier onto a recording medium nipped in the transfer nip. The bias voltage includes a first voltage for transferring the toner image from the image carrier onto the recording medium in a transfer direction and a second voltage having an opposite polarity of the first voltage, the first and the second voltages being alternately output. A time-averaged value of the bias voltage is set to a polarity in the transfer direction and is set in the transfer direction side with respect to a median between a maximum and a minimum of the bias voltage.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: October 2, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinya Tanaka, Naomi Sugimoto, Haruo Iimura, Shinji Aoki, Yasuhiko Ogino, Kazuchika Saeki, Keigo Nakamura
  • Patent number: 10061253
    Abstract: An image forming apparatus includes an image forming section, a primary conveyance section, a first diverging section, a sorting ejection section, a secondary conveyance section, and a housing. The first diverging section is located downstream of the image forming section in a paper conveyance direction in the primary conveyance section. The secondary conveyance section diverges from the primary conveyance section at the first diverging section. The sorting ejection section sorts and ejects the paper conveyed thereto by the secondary conveyance section. The housing constitutes an apparatus main body and houses the image forming section, the primary conveyance section, the first diverging section, and part of the secondary conveyance section. One side wall of a plurality of side walls of the housing has an opening. The secondary conveyance section conveys the paper to a proximal end of the sorting ejection section through the opening.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: August 28, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hiroyuki Harada
  • Patent number: 10015328
    Abstract: A sheet management apparatus includes a storing unit, an obtaining unit, and a setting unit. The storing unit stores a combination of first attribute information and second attribute information of sheets. The obtaining unit obtains, from the storing unit, the second attribute information stored in combination with the first attribute information, based on the first attribute information of sheets used in a job. The setting unit sets the second attribute information obtained by the obtaining unit, as attribute information of sheets stored a sheet holding unit.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: July 3, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yukiyoshi Hikichi
  • Patent number: 10012940
    Abstract: An image formation apparatus includes: a process device that forms a developer image; a transfer device that transfers the developer image formed by the process device onto a recording medium; a voltage applier that applies a voltage to the transfer device; and a voltage controller that acquires information on a width of the recording medium in a direction orthogonal to a medium conveyance direction, and controls the voltage applied by the voltage applier to the transfer device based on the width of the recording medium.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: July 3, 2018
    Assignee: Oki Data Corporation
    Inventors: Hiroshi Miura, Tetsuya Sato
  • Patent number: 9996038
    Abstract: An image forming apparatus includes an image bearing member configured to bear a toner image formed using a liquid developer containing toner particles and a carrier liquid, a transfer member, an input portion into which information on a kind of a recording material is inputted, an adjusting device configured to adjust an amount of the carrier liquid of the toner image, and an executing portion configured to execute an operation of the adjusting device depending on the information when the toner image is in the adjusting position. The executing position executes either of a plurality of operations including a first operation in which the amount of the carrier liquid of the toner image is increased, a second operation in which the amount of the carrier liquid is decreased, and a third operation in which the amount of the carrier liquid is not adjusted.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: June 12, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shohei Okumura
  • Patent number: 9989906
    Abstract: A control unit is configured to control torque of a fixing motor and torque of a pressing motor such that tangential force at a part holding paper in cooperation with a fixing member in a pressing member is equal to or greater than tangential force at a part holding paper in cooperation with the pressing member in the fixing member, and that the relation between the tangential force at the part of the pressing member and the tangential force at the part of the fixing member changes in accordance with the smoothness of paper.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: June 5, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Naoki Yoshie, Chiaki Yamada, Toru Kikuchi
  • Patent number: 9989893
    Abstract: An image forming apparatus includes a controller configured to compare a threshold value and an output value corresponding to an intensity of light reflected from a detection image, and to detect a color misregistration amount based on a comparison result; an update unit configured to update the threshold value based on a previous output value corresponding to the intensity of the light reflected from the detection image; and an adjustment unit configured to adjust an emission intensity of the light emitting element. The update unit updates, in a case when the emission intensity is adjusted, the threshold value based on the previous output value, a previous emission intensity, and the emission intensity adjusted by the adjustment unit.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: June 5, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shun Takahashi
  • Patent number: 9977385
    Abstract: An image forming apparatus includes a fixing film for fixing a toner image formed on a recording material, and first and second fixing heaters configured to heat the fixing film. The first fixing heater has a high heat generation region at a center portion in a width direction of a fixing nip portion and the second fixing heater has a high heat generation region at an end portion in the width direction of the fixing nip portion. A center portion temperature detection unit detects a center portion temperature of a center portion of the fixing film in the width direction. An end portion temperature detection unit detects an end portion temperature of an end portion of the fixing film in the width direction. A size detection unit detects a size of the recording material. A control unit controls a heat generation amount of the fixing heaters.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: May 22, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shusuke Miura, Hiroki Kawai
  • Patent number: 9977386
    Abstract: An image forming apparatus determines, in a first mode, an image forming condition according to characteristic data, which is input by a user and represents characteristics of a sheet contained in a sheet container, causes a sensor to detect characteristics of a sheet, and stores characteristic data according to a result of the detection into a memory. The image forming apparatus determines, in a second mode with the characteristic data being stored in the memory, an image forming condition, based on the characteristic data stored in the memory before a result of detecting a characteristic of a sheet by the sensor is obtained. The image forming apparatus causes, in the second mode with the characteristic data being not stored in the memory, the sensor to detect characteristics of a sheet, and determines an image forming condition based on a result of the detection.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: May 22, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Mitsuhiko Sato
  • Patent number: 9969200
    Abstract: A decoloring apparatus includes an erasing unit configured to generate heat so as to erase an image formed on a sheet with an erasable material, a sheet storing unit to store one or more sheets, each having the image formed thereon with the erasable material, a sheet conveying unit configured to convey the sheets from the sheet storing unit to the erasing unit, a quantity sensor configured to detect a quantity of the sheets stored in the sheet storing unit, and a control unit configured to determine whether or not the detected quantity is greater than a predetermined value, and control the sheet conveying unit to convey the sheets and the erasing unit to generate heat, when the detected quantity is determined to be greater than the predetermined value.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: May 15, 2018
    Assignees: Kabushiki Kaisha Toshiba, Toshiba TEC Kabushiki Kaisha
    Inventor: Kenji Yokoyama
  • Patent number: 9942422
    Abstract: An image forming apparatus includes: a display; a setting change determining section configured to, after the receipt of a command to execute a function, determine whether or not any of setting items for the function has been changed; a change frequency value storage section configured to store a change frequency value indicating a frequency of change of the individual setting item; a shortcut screen creating section configured to create one or more shortcut keys each for receiving a command to change one of the setting items in different sizes depending upon the change frequency value stored in the change frequency value storage section and create a shortcut screen on which the shortcut keys are arranged; and a display control section configured to read the shortcut screen created by the shortcut screen creating section and allow the display to display the shortcut screen.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: April 10, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Masahiro Nakao
  • Patent number: 9927742
    Abstract: An image forming apparatus including: a toner image forming unit forming a toner image on an intermediate transfer member; a transfer member transferring the toner image on the intermediate transfer member to a recording material in a transfer portion; a driving source applying driving force to the transfer member independently of an intermediate transfer member driving source; an execution unit correcting image misalignment on the basis of a detection result of a test toner image on the intermediate transfer member when no toner image exists in the transfer portion; a container storing the recording material; and an input unit associating the container with a group related to basic weight and surface properties of the recording material. The apparatus includes a driving unit driving the driving source at a speed corresponding to the group if the recording material stored in the container associated with the group is used for image formation.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: March 27, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kenichi Hirota
  • Patent number: 9921532
    Abstract: An image forming apparatus includes an image forming unit, a transmission unit, a reception unit, a control unit configured to obtain a time period until the reception unit receives a first ultrasonic wave via a first recording material and an amplitude value thereof at a reference temperature, obtain a time period until the reception unit receives a second ultrasonic wave via a second recording material and an amplitude value thereof at a different temperature, control an image formation condition for forming the image on the first recording material on the basis of the amplitude value of the first ultrasonic wave, obtain a difference time period between reception of the first and second ultrasonic waves, and control an image formation condition for forming the image on the second recording material on the basis of the difference time period and the amplitude value of the second ultrasonic wave.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: March 20, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuhei Watanabe, Tsutomu Ishida
  • Patent number: 9904218
    Abstract: A heating device includes a conveying unit, a heating unit, a temperature detecting unit and a controller. The conveying unit conveys a recording material. The heating unit includes a plurality of heat sources which are disposed so that locations thereof are different from each other in a conveying direction of the recording material, and heats the conveyed recording material. The temperature detecting unit is positioned on an upstream side in the conveying direction of the recording material with respect to the plurality of heat sources, and detects a temperature of the heating unit. The controller controls one of the plurality of heat sources based on a detecting result obtained by the temperature detecting unit. The one of the plurality of heat sources is positioned on the upstream side in the conveying direction of the recording material.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: February 27, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Koichi Kimura, Toshinori Sasaki, Mizuki Sugino, Mitsutoshi Hongo
  • Patent number: 9817343
    Abstract: The fixing apparatus includes a cylindrical film, a nip portion forming member in contact with the film, a pressure member that forms the nip portion with the nip portion forming member through the film, a heater configured to heat the film by emitting a radiant light, the heater being arranged in a hollow portion of the film, a first shielding member arranged between the nip portion forming member and the heater, and a second shielding member movable between a first position in which the second shielding member is positioned in a region between the first shielding member and the nip portion forming member, and a second position in which the second shielding member is positioned in a region, where the nip portion forming member does not exist, between the heater and the film. The second shielding member has a slit through which the radiant light passes.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: November 14, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masami Takeda
  • Patent number: 9811033
    Abstract: A fixing device includes a pressure mechanism and a pressure adjustment mechanism. The pressure mechanism includes a pressing member holding one of the pressure member and the heating member and a biasing member biasing the pressing member in a direction toward or away from the other of the pressure member and the heating member. The pressure adjustment mechanism includes an eccentric cam. The pressure adjustment mechanism uses one of small-diameter and large-diameter parts formed in the outer peripheral surface of the eccentric cam to allow the pressure mechanism to give the nip pressure, and uses the other of them to allow the pressure mechanism to release the nip pressure. When the large-diameter part is used to allow the pressure mechanism to give or release the nip pressure, the eccentric cam constantly receives reaction force urging it to rotate in a direction toward the small-diameter part.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: November 7, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Masafumi Miki
  • Patent number: 9772575
    Abstract: An image forming apparatus includes multiple first image forming units, a second image forming unit, and a controller. The first image forming units transfer toner images developed with colored toners to a transfer body, and form first images on the transfer body. The second image forming unit transfers a toner image developed with a spot color toner different from colors of the colored toners to the transfer body prior to the first image forming units, and forms a second image serving as an undercoat or an overcoat of the first images on the transfer body. The controller controls the first image forming units in order that amounts of the colored toners used for forming the first images by the first image forming units become less than amounts of the colored toners used when the first images are formed prior to the second image.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: September 26, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masaaki Yamaura, Satoshi Shigezaki, Yoshiki Shimodaira, Yoshiyuki Tominaga
  • Patent number: 9766583
    Abstract: An image forming apparatus includes a first image forming unit that develops a first latent image using a first developer so that a first developer image is developed with the first developer, a second image forming unit that develops a second latent image using a second developer, which is lower in saturation or higher in light-permeability in comparison to the first developer, so that a second developer image is developed with the second developer, a transfer part that transfers the first developer image and the second developer image to a medium, and a control part that controls an amount of the second developer used to develop the second developer image according to a type of the medium.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: September 19, 2017
    Assignee: Oki Data Corporation
    Inventor: Osamu Kunimori
  • Patent number: 9740156
    Abstract: An image forming apparatus includes a toner image forming unit, a nip formation member, a transfer power source, an information acquisition device, and a controller. The information acquisition device acquires specific information that specifies whether a recording sheet as a transfer target of a toner image is an uneven surface sheet having an uneven surface. The controller outputs a bias including a superimposed voltage, in which an alternating current (AC) voltage is superimposed on a direct current (DC) voltage, as a transfer bias from the transfer power source when the specific information acquired by the information acquisition device is not information corresponding to the uneven surface sheet and to output a bias including only the DC voltage as the transfer bias from the transfer power source when the specific information is the information corresponding to the uneven surface sheet.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: August 22, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuuji Wada, Hiroyoshi Haga, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita, Kazuki Yogosawa, Kenji Sugiura, Takehide Mizutani, Tatsuya Ohsugi, Hirokazu Ishii
  • Patent number: 9684271
    Abstract: A controller for controlling an image heating device which includes first and second rollers for heating therebetween a toner image on a sheet, a first rubbing roller for rubbing the first roller, and a second rubbing roller for rubbing the second roller, said controller including a counter configured to count a number of heated sheets; a first executing portion configured to execute rubbing by the first rubbing roller in accordance with an output of the counter; a second executing portion configured to execute rubbing by the second rubbing roller in accordance with an output of the counter; an acquiring portion execution instructions of an image glossiness improving mode operation provided by an operator; and a determination portion configured to determine which roller or rollers of the first second rollers is to be rubbed in accordance with an output of the counter, when the acquiring portion acquires the execution instructions.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: June 20, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichi Moteki, Yasuharu Chiyoda
  • Patent number: 9671730
    Abstract: According to one embodiment, a fixing device includes determination means for determining the size of a medium, heating means for including plural heat-generating members which are two-dimensionally arranged such that the heat-generating members are lined up along two parallel lines or more which are vertical to a transport direction of the medium and divided at locations on the parallel lines, and are disposed so as to come into contact with an inner side of the rotating body, and a switching unit which switches individual conduction, and heats the medium, pressing means for forming a nip by performing pressing and contact at a position of the plural heat-generating members, and heating control means for selecting a group of the heat-generating members which are lined up in the two-dimensional arrangement, conducting the selected group of the heat-generating members, and controlling the heating means.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: June 6, 2017
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Shoko Shimmura, Osamu Takagi
  • Patent number: 9651899
    Abstract: A steering roller autonomously steers an intermediate transfer belt. A pre-secondary-transfer roller is disposed at a position upstream of and adjacent to a driving roller also functioning as a transfer inner roller, and includes a rubber material on at least a surface thereof. This suppresses movement of the intermediate transfer belt even when a lateral-deviation converging position is changed by the change of position of the driving roller having large frictional force due to the pressing force of a secondary transfer roller. Hence, the belt deviation amount is reduced, and the time until lateral deviation converges is shortened.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: May 16, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Jiro Makinodan
  • Patent number: 9639039
    Abstract: An image forming apparatus detects that the temperature of a fixing member reaches a lower limit value at which the temperature once reduced by the start of a heating and fixing process to a paper turns to rise, after an image forming operation starts, and determines the type of the paper based on at least one of an elapsed time from a predetermined reference time point after the image forming operation starts to a time point at which it is detected that the temperature reaches the lower limit value, and a temperature difference between the temperature of the fixing member at the reference time point and the lower limit value.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: May 2, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takanobu Shiki, Tadayuki Ueda, Eiji Nishikawa, Yukinobu Iguchi, Satoshi Miyajima, Yohei Yamada
  • Patent number: 9612558
    Abstract: An image forming apparatus includes an image forming device, an area coverage calculation section, and an image data rotating section. The image forming device forms a toner image in accordance with image data without setting margins at edges of a first recording medium. The area coverage calculation section calculates an area coverage of the image data for a certain region at each of the edges of the first recording medium. The image data rotating section rotates the image data by a certain angle, when the calculated area coverage at one of the edges is a certain value or more, so that the one of the edges is not on a leading edge side of the first recording medium in a transport direction.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: April 4, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Yasuto Okabayashi
  • Patent number: 9599943
    Abstract: An image forming apparatus includes an image forming unit for forming an image on a recording material, a first detection unit including a transmission unit for transmitting an ultrasonic wave and a reception unit for receiving the transmitted ultrasonic wave, first and second conveyance units for conveying the recording material, and a control unit. The first and second conveyance units form a loop on the recording material by conveying the recording material at different speeds. The control unit controls an image forming condition for forming an image on the recording material by the image forming unit, based on the ultrasonic wave received via the recording material in a period in which no loop is formed on the recording material by the first and second conveyance units.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tsutomu Ishida, Masafumi Monde, Takuya Shono, Kohki Abiko
  • Patent number: 9568876
    Abstract: A damage amount determination device, which is used for an image forming device that forms an image on paper, includes an information acquisition unit that acquires information related to whiteness of the paper used for printing and a damage amount determination unit that determines an amount of damage, which is caused by the paper to a predetermined component of the image forming device when the paper passes through the predetermined component, based on the information related to the whiteness.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: February 14, 2017
    Assignee: Konica Minolta, Inc.
    Inventors: Shinji Ogawa, Yu Mukobayashi, Yasuyuki Inada, Masato Kimura, Yuusuke Mandai
  • Patent number: 9547249
    Abstract: An image forming apparatus includes an image forming station, an intermediate transfer body, a transfer device, a transfer pressure applicator, and a controller. The image forming station forms a toner image. The toner image formed by the image forming station is transferred onto the intermediate transfer body. The transfer device transfers the toner image from the intermediate transfer body onto a recording medium. The transfer pressure applicator applies a secondary transfer pressure to the recording medium upon transfer of the toner image and to apply a lower secondary transfer pressure upon transfer of a toner image including a special color toner than that upon transfer of a toner image without the special color toner. The controller is operatively connected to the transfer pressure applicator to control the transfer pressure applicator.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: January 17, 2017
    Assignee: Ricoh Company, Ltd.
    Inventor: Naoto Kochi
  • Patent number: 9509876
    Abstract: A control method for a printing apparatus including a reading unit configured to read an image to generate image data includes printing, via a printing unit, an adjustment image, which is used to adjust a printing position, in such a way that the adjustment image is in contact with an end of a sheet, detecting the end of the sheet based on adjustment image data generated by the reading unit reading the adjustment image printed on the sheet by the printing unit, obtaining an amount of shift in the printing position based on the detected end of the sheet and the adjustment image data, and controlling, based on the obtained amount of shift in the printing position, the printing unit to print an image on the sheet.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: November 29, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shou Kikuchi
  • Patent number: 9507369
    Abstract: In an embodiment, a method includes monitoring a temperature of a semiconductor chip and adjusting a supply voltage to the semiconductor chip based on the monitored temperature. The temperature may be monitored by a temperature sensor located on-chip or off-chip. Adjusting the supply voltage includes increasing the supply voltage as a function of the monitored temperature decreasing. The increase to the supply voltage occurs only if the monitored temperature is below a threshold temperature. The supply voltage adjustment is determined by a linear relationship having a negative slope with temperature.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: November 29, 2016
    Assignee: Cavium, Inc.
    Inventors: David A. Carlson, Manan Salvi, Curtis Miller
  • Patent number: 9482997
    Abstract: An image forming apparatus includes: a recording material accommodating portion configured to accommodate a recording material; an image forming portion configured to form a toner image on the recording material fed from the recording material accommodating portion; a fixing portion configured to heat-fix the toner image formed on the recording material by the image forming portion; a storing portion configured to store information corresponding to the type of the recording material accommodated in the recording material accommodating portion; a detecting portion configured to detect that an operator exists in a predetermined zone in a neighborhood of the image forming apparatus; and an executing portion configured to execute a start-up process of the fixing portion, when the detecting portion detects the existence of the operator before the image forming apparatus receives an image formation instruction, over a time depending on the information stored in the storing portion.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: November 1, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daigo Matsuura
  • Patent number: 9473657
    Abstract: Provided is an image forming apparatus capable of preventing a printed matter from being inadvertently taken away by other users. The image forming apparatus mainly includes a first determination part, a second determination part, and a job control part. The first determination part determines whether there exists a second printing job to be executed subsequent to the first printing job. The second determination part determines whether the time measured by the timer part has passed a predetermined period if it is determined that there exists the second printing job. The job control part performs interval control for causing the printing part to execute the second printing job after the predetermined period has passed if it is determined that the predetermined period has not yet passed.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: October 18, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hiromi Sakata
  • Patent number: 9448513
    Abstract: An image forming apparatus includes: a recording material accommodating portion configured to accommodate a recording material; an image forming portion configured to form a toner image on the recording material fed from the recording material accommodating portion; a fixing portion configured to heat-fix the toner image formed on the recording material by the image forming portion; a storing portion configured to store information corresponding to the type of the recording material accommodated in the recording material accommodating portion; a detecting portion configured to detect that an operator exists in a predetermined zone in a neighborhood of the image forming apparatus; and an executing portion configured to execute a start-up process of the fixing portion, when the detecting portion detects the existence of the operator before the image forming apparatus receives an image formation instruction, over a time depending on the information stored in the storing portion.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: September 20, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daigo Matsuura
  • Patent number: 9429881
    Abstract: An image forming apparatus includes an image carrier; an intermediate transfer body; a second-transfer member; a support mechanism that supports the second-transfer member in a second-transfer region; a surface-positioning member that is disposed upstream of the second-transfer member in a transport direction; a determination device that determines whether or not a recording medium is a thin medium; and a controller that, in a case where it is determined that the recording medium is a thin medium, controls the support mechanism so as to move the second-transfer member more upstream in the transport direction than in other cases and controls the position of the surface-positioning member so as to move the second-transfer member in a direction such that an angle between the intermediate transfer body and the second-transfer member on the upstream side becomes larger than in other cases.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: August 30, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Tomoaki Yoshioka
  • Patent number: 9423740
    Abstract: An image forming apparatus includes (i) a feeding portion; (ii) an image forming portion; and (iii) a fixing portion. 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: Grant
    Filed: July 23, 2013
    Date of Patent: August 23, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masahiro Nawa