Having Power Supply Patents (Class 399/88)
  • Patent number: 10915051
    Abstract: The image forming apparatus is characterized in that information about an input voltage detected on the primary side of a transformer is transmitted from a primary-side switching control unit to a secondary-side controller for controlling a heating device, and the controller controls the temperature of a heater of the heating device based on the transmitted information.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: February 9, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takao Izaki, Yasuhiro Shimura
  • Patent number: 10908542
    Abstract: During a period of a low power state, an image forming apparatus causes a system controller to stop an operation of a second power source and cut off voltage supply from a first power source to each of a power relay, an AC voltage detector, a fixing controller, and a printer controller. At a time of return from the low power state, the system controller starts the power supply from the first power source to each of the power relay, the AC voltage detector, the fixing controller, and the printer controller, and then activates the second power source.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: February 2, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Funaba
  • Patent number: 10782627
    Abstract: An imaging device includes a photoconductive drum charged by a charge roll and opposed by developer roll. The developer roll adds toner to the drum to develop a latent image on the drum for transfer to media. One or more high voltage power supplies communicate with a controller to set voltages on the rolls. The controller determines whether imaging of the media is to occur at a time when the drum is rotating. If not, a laser beam discharges the drum and the voltage on the charge roll is decreased to reduce the charge on the drum, but the controller maintains the voltage differential between the drum and the developer roll.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: September 22, 2020
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Andrew Pryse Dale, Matthew David Heid, Christopher David Strack
  • Patent number: 10747163
    Abstract: The present invention provides a printing apparatus including a standby state and a power saving state in which power consumption is lower than in the standby state, the printing apparatus comprising: a control unit that integrally controls the apparatus; a plurality of engines for providing functions of the apparatus; and a power source control unit that controls power supply to the control unit and the plurality of engines in accordance with the standby state and the power saving state, wherein, when the apparatus is caused to transition to the standby state from the power saving state, the power source control unit controls power in the standby state after it is confirmed that the plurality of engines can return to the standby state.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: August 18, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kensuke Kawajiri
  • Patent number: 10719330
    Abstract: A communication device includes: a communication unit which receives control data; and a main control unit which controls an operation of the communication device, based on the control data received by the communication unit. The communication device operates in a first standby state where the main control unit stops at least a part of operations and where the communication unit detects only an access to a specific port that designates the communication device as a destination, and in a second standby state where the main control unit can execute the operations and controls the operation of the communication device, based on the control data. The communication unit wakes up the main control unit if an access to the specific port is detected in the first standby state.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: July 21, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Kenichiro Tomita
  • Patent number: 10698357
    Abstract: An image forming apparatus arranged to form an image on a recording material, the image forming apparatus includes a first and second object. A first urging member is provided between the electrically conductive wire, and arranged to urge towards the first object and to electrically couple the electrically conductive wire and the first object to each other. A second urging member is provided between the second object and the electrically conductive wire, and arranged to urge towards the second object and to electrically couple the electrically conductive wire and the second object to each other. The electrically conductive wire is formed of a material having an elastic coefficient that is lower than that of the first urging member and that of the second urging member.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: June 30, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chikara Imaizumi, Kazuhiko Shinoda
  • Patent number: 10691057
    Abstract: A controller controls a secondary transfer power source such that a current having a first value flows in a secondary transfer portion in a case where a transfer material with an image formed on a first surface thereof has been conveyed for less than a predetermined amount of time in a second conveyance path. Moreover, the controller controls the secondary transfer power source such that a current having a second value larger in absolute value than the first value flows in the secondary transfer portion in a case where the transfer material with an image formed on the first surface thereof is conveyed to the secondary transfer portion after waiting for the predetermined amount of time or more in the second conveyance path.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: June 23, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Taisuke Minagawa, Ken Yokoyama, Yasuharu Hirado
  • Patent number: 10674767
    Abstract: There is provided method of controlling an electrically operated aerosol-generating system, including: receiving an input being a first request to adjust a first parameter of the system; comparing the input to a first range of allowable values for the first parameter; providing an authorizing signal indicating that the input is within the range of allowable values for the first parameter; determining an adjustment to a second range of allowable values for a second parameter, which is dependent on the first parameter, and in dependence on the input; and adjusting the first parameter and the second range of allowable values for the second parameter, in dependence on the authorizing signal. There is also provided an electrically operated aerosol-generating device and an electrically operated aerosol-generating system.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: June 9, 2020
    Assignee: Philip Morris Products S.A.
    Inventor: Stephane Antony Hedarchet
  • Patent number: 10672317
    Abstract: A display device includes: a display panel; a power management circuit configured to: perform a short detection operation with a first short detection condition during a start-up operation; supply first and second power supply voltages in the normal mode; and stop supplying the first and second power supply voltages in the low power mode; and a display driver configured to provide a first image signal in the normal mode and a second image signal for in the low power mode, the display driver comprising a power block configured to supply first and second standby power supply voltages in the low power mode, wherein, in a transition frame between the low power mode and the normal mode, the display driver provides the second image signal for the standby image to the display panel, and the power management circuit performs the short detection operation with a second short detection condition.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: June 2, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yoon Young Lee, Sungchun Park
  • Patent number: 10663896
    Abstract: A fixing device to fix a toner image on a recording paper while transporting the recording paper bearing the toner image through a nip portion includes a first rotator, a second rotator, a heating unit, a temperature measuring element, a control unit, and a voltage applying unit. The second rotator forms the nip portion together with the first rotator. The heating unit heats the first rotator. The temperature measuring element measures temperature of the first rotator or the heating unit. The control unit controls power supplied to the heating unit in accordance with the temperature measured by the temperature measuring element. The voltage applying unit applies voltage to the second rotator. The second rotator includes a conductive layer having an attribute of changing resistance depending on temperature. The fixing device measures temperature of the second rotator by measuring the resistance of the conductive layer of the second rotator.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: May 26, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masatoshi Itoh
  • Patent number: 10564588
    Abstract: A controller, which is a high-voltage power supply apparatus, includes: a secondary transfer high-voltage output device including a first high-voltage generator, which is configured to generate a first voltage having a positive voltage value, and a second high-voltage generator, which is connected in series to the first high-voltage generator, and is configured to generate a second voltage, the secondary transfer high-voltage output device being configured to output an output voltage, which is a sum of the first voltage and the second voltage; and a secondary transfer high-voltage control device, which is configured, in a case where the high-voltage power supply apparatus is switched from a state in which the first high-voltage generator is driven to output a first target voltage as the output voltage, to a state in which a second target voltage is output as the output voltage, to perform feedback control on the second voltage.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: February 18, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yohei Shiraki
  • Patent number: 10509341
    Abstract: A charged positive toner having a positive polarity that attaches to a charge roller is moved from the charge roller to a photosensitive drum, and the positive toner is transferred to an intermediate transfer belt at a primary transfer portion at which a primary-transfer power supply forms an electric potential having a negative polarity. The primary-transfer power supply forms an electric potential having the positive polarity at the primary transfer portion, and the positive toner transferred to the intermediate transfer belt is moved together with the intermediate transfer belt and is collected by the charge roller in contact with a downstream photosensitive drum.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: December 17, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Tanaka, Shinji Katagiri, Tsuguhiro Yoshida, Shuichi Tetsuno, Takahiro Ikeda
  • Patent number: 10496907
    Abstract: An electronic apparatus includes a convertor, and a discharge circuit, and a controller. The convertor controls supply of power to a load according to one of a state of a switch and an operational mode of the electronic apparatus. The discharge circuit discharges a capacitor of a power supply when the convertor stops operating. The controller detects completion of discharge performed with the discharge circuit according to a voltage in the discharge circuit, and restores operation of the convertor in response to a detection of the discharge completion detector indicating the completion of the discharge of the capacitor, when the switch is in the closed state or when the operational mode is switched from the sleep mode to the operating mode.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: December 3, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Tatsuya Ogino
  • Patent number: 10427400
    Abstract: A printhead comprises a printing element, a driving circuit configured to drive the printing element, an analog signal processing circuit configured to process one or more analog signals, a bias circuit configured to supply a bias voltage to the analog signal processing circuit, and a control terminal to which a control signal is inputted. In a state in which the analog signal processing circuit and the bias circuit are receiving a supply of power, it is possible to switch starting and stopping of at least one of the analog signal processing circuit and the bias circuit based on the control signal.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: October 1, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidenori Yamato, Hideo Kanno, Masataka Sakurai, Ryo Kasai, Kengo Umeda
  • Patent number: 10423115
    Abstract: An image forming apparatus including an image carrying member, an intermediate transfer belt having conductivity, a toner image on the image carrying member being primarily transferred to the intermediate transfer belt, a secondary transfer member in contact with an outer peripheral surface of the intermediate transfer belt, the secondary transfer member secondarily transferring the toner image on the intermediate transfer belt to a transfer material, a power supply applying a voltage to the secondary transfer member, the toner image being primarily transferred from the image carrying member to the intermediate transfer belt by having a voltage be applied to the secondary transfer member from the power supply, a contact member in contact with the intermediate transfer belt, and a constant current diode, an anode side thereof being connected to the power supply, and a cathode side thereof being connected to the contact member.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: September 24, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shuichi Tetsuno, Shinji Katagiri, Tsuguhiro Yoshida, Koji An
  • Patent number: 10409213
    Abstract: An image forming apparatus arranged to form an image on a recording material, the image forming apparatus including an object, an electrically conductive member; and an urging member arranged to urge the electrically conductive member towards the object and to electrically couple the electrically conductive member and the object to each other. In the image forming apparatus, the electrically conductive member is formed of a material having a low elastic coefficient that is lower than that of the urging member.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: September 10, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chikara Imaizumi, Kazuhiko Shinoda
  • Patent number: 10394173
    Abstract: The present disclosure provides a high productivity image forming apparatus in which a control unit calculates power to be used in the apparatus in a case where a throughput thereof is increased and compares the power to be used and suppliable power to the apparatus to determine whether the throughput is to be increased or not.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: August 27, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tetsuya Yamamoto
  • Patent number: 10280022
    Abstract: An image reading apparatus includes the following. A conveyor conveys a sheet on which an image is formed by an image forming apparatus. An image reader reads the image formed on the sheet. A storage stores a speed variation profile which shows a speed variation for conveying the sheet with the conveyor when the image is read by the image reader. A controller, based on a speed variation profile stored in the storage, controls the conveyor to cancel a variation in speed shown by the speed variation profile, controls the image reader to read a reference mark formed on a sheet by the image forming apparatus, and obtains a forming position of the reference mark.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: May 7, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventor: Tianzi Xu
  • Patent number: 10277065
    Abstract: A power supply control device includes a moving object detecting unit and a power supply unit. The moving object detecting unit is attached to a processing apparatus body including power supply targets and a controller, and is capable of detecting a moving object moving in the vicinity of the processing apparatus body. The moving object detecting unit has a lower detection range for detecting a part of a moving object that is substantially in contact with the floor, and an upper detection range for detecting a top part of a moving object. The power supply unit is included in the controller and is always supplied with power to monitor approach of a moving object with the moving object detecting unit. The power supply unit supplies, upon the moving object detecting unit detecting a moving object, power to a power supply target that includes a part of the controller.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: April 30, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Susumu Yamashina, Kazuhiko Narushima, Masafumi Ono, Motofumi Baba, Kenta Ogata, Kouichi Azuma, Kenji Kuroishi, Keiko Shiraishi, Hidenori Horie
  • Patent number: 10234814
    Abstract: A power supply apparatus includes: a first primary winding; a first AC voltage outputter connected to one side of the first primary winding so as to output a first AC voltage; a second AC voltage outputter connected to the other side of the first primary winding and capable of outputting a second AC voltage with an inverted phase of the first AC voltage; a first secondary winding that generates a third AC voltage by mutual induction of the first primary winding to which the first AC voltage and the second AC voltage are applied; a second primary winding having one side receiving an input of the second AC voltage and the other side connected to a fixed voltage; and a second secondary winding that generates a fourth AC voltage by mutual induction of the second primary winding to which the second AC voltage is applied.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: March 19, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Makoto Shimazoe, Masayuki Watanabe, Yuhei Tatsumoto, Akihiro Hayashi
  • Patent number: 10194045
    Abstract: Example implementations relate to printer power management. For example, a system for printer power management may include a system power control engine to receive a power usage estimate from each of a plurality of components of a printing device and schedule a deferred service routine to identify a level of real-time performance of the plurality of components. Furthermore, a system for printer power management may include a state machine engine to estimate how close a power supply coupled to the printing device is to an over-power failure (OPF) based on the real-time performance.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: January 29, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Devin Koepl
  • Patent number: 10168655
    Abstract: An image forming apparatus including: an image forming portion; a fixing portion; an electric storage portion configured to supply electric power to a load; a first power supply configured to supply electric power to the load; a second power supply configured to supply electric power to the fixing portion; and a controller configured to supply electric power from the electric storage portion to the load and supply a predetermined maximum allowable power from an AC power supply to the second power supply when an image formation request is input, wherein in a case where a remaining amount of the electric storage portion becomes lower than a predetermined value, the controller reduces electric power supplied from the second power supply to the fixing portion lower than the maximum allowable power, and thereafter switches an electric power supply to the load from the electric storage portion to the first power supply.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: January 1, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Junji Ishikawa
  • Patent number: 10168651
    Abstract: An image forming apparatus: acquires, before start of current supply to electric elements including heater, information indicating rated power of the heater and total consumption power of the electric elements excluding the heater; subtracts the total consumption power from upper power limit of the apparatus, and calculates maximum power not exceeding the rated power and remaining power thus subtracted; obtains duty ratio based on assumption of current supply corresponding to the maximum power according to pulse modulation, and determines whether the duty ratio falls within predetermined range; and controls, when the duty ratio falls within the range, drive circuit to supply alternating current by pulse modulation method, and when the duty ratio falls outside the range, to supply the alternating current by phase control method that temporarily interrupts the supply of the alternating current to the heater in half cycles of the alternating current.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: January 1, 2019
    Assignee: Konica Minolta, Inc.
    Inventors: Shigetaka Kato, Seiichi Kirikubo, Yutaka Yamamoto, Naoto Sugaya, Nobuhiro Matsuo
  • Patent number: 10152010
    Abstract: A signal transmitting apparatus includes a first line that is provided in one of plural layers of a board and transmits a signal by superimposing the signal on an electric power line that supplies electric power; a coupling section in which the electric power line is coupled to the first line and the first line is branched; plural second lines that branch off in the coupling section and are provided in another layer different from the one layer; and a conductive layer that is provided between the one layer and the other layer. The conductive layer has an opening that encompasses the coupling section in plan view, and the coupling section has a coupling line that has a larger width than the first line and plural through-holes that connect the coupling line and the plural second lines through the opening of the conductive layer.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: December 11, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Hirokazu Tsubota, Tsutomu Ishii, Tsutomu Hamada
  • Patent number: 10152109
    Abstract: An information processing apparatus obtains a measurement value D of the distance between the object and information processing apparatus using a human detection sensor, and detects the object as a user (user detection state ST3) by comparing the measurement value D and a predetermined threshold value. The power mode of the information processing apparatus is set to a standby mode if a user has been detected, and is set to a sleep mode if a user has not been detected. If a state in which a user has been detected continues for a predetermined time, the information processing apparatus changes the sensitivity of the human detection sensor by changing the threshold value for the detection state determination such that the object detected by the human detection sensor is no longer detected as a user.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: December 11, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yusuke Horishita
  • Patent number: 10148839
    Abstract: An MFP (an image forming apparatus) includes a main CPU that performs a predetermined process before switching the MFP to a power supply stop state, in response to a turn-off operation on a main power switch of the MFP, and a sub CPU that controls supply of power to individual units of the MFP in response to a command from the main CPU by a power relay and a power control IC. The sub CPU monitors the operating state of the main CPU after the turn-off operation on the main power switch. After the turn-off operation, even if a power supply stop command from the main CPU is not received, if a predetermined condition related to the result of the monitoring of the operating state of the main CPU is satisfied, the sub CPU performs forced turn-off control for forcibly stopping supply of power to the individual units.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: December 4, 2018
    Assignee: Konica Minolta, Inc.
    Inventor: Hiroyasu Ito
  • Patent number: 10139759
    Abstract: An image forming apparatus includes: a fixer that includes a first heater group including first heaters and a second heater group including second heaters; a first power cord that supplies AC power to the first heater group; a second power cord that supplies AC power to the second heater group; first switches that switch a power supply state to the first heaters; second switches that switch a power supply state to the second heaters; and a hardware processor that independently controls the lightings of the first and second heater groups by controlling the first and second switches based on an array pattern for turning on or off the first and second heaters, wherein the array pattern includes an on period and an off period whose lengths are both a half wave cycle of an AC power supply, and is set to satisfy a flicker regulation value.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: November 27, 2018
    Assignee: Konica Minolta, Inc.
    Inventor: Kenji Tamaki
  • Patent number: 10114331
    Abstract: A transfer device includes an image bearer, a rotatable body, a solid lubricant assembly, and a guide. An image bearer bears an image. The rotatable body forms a transfer nip with the image bearer to rotate in contact with a recording medium. An image on the image bearer is transferred onto the recording medium at the transfer nip. The solid lubricant assembly includes a solid lubricant and extends in a longitudinal direction of the rotatable body. The solid lubricant assembly applies a solid lubricant to at least one of the rotatable body and the image bearer. The guide guides the recording medium and positions the solid lubricant assembly.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: October 30, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Junpei Fujita, Katsuhito Haruno, Atsushi Nakamoto, Masakazu Imai, Osamu Ichihashi, Takehide Mizutani, Naoto Kochi
  • Patent number: 10042312
    Abstract: An image forming apparatus arranged to form an image on a recording material, the image forming apparatus including an object, an electrically conductive member; and an urging member arranged to urge the electrically conductive member towards the object and to electrically couple the electrically conductive member and the object to each other. In the image forming apparatus, the electrically conductive member is formed of a material having a low elastic coefficient that is lower than that of the urging member.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: August 7, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chikara Imaizumi, Kazuhiko Shinoda
  • Patent number: 10027823
    Abstract: A guidance apparatus comprises: an operation section configured to receive an operation from a user; a first detection section configured to detect a user in front of the operation section; a confirmation processing section configured to confirm the existence of a user operating the operation section according to the detection result of the first detection section; a determination processing section configured to determine whether or not the operation section receives an operation from the user within a certain period of time after the confirmation processing section confirms the existence of the user; and a guidance information output section configured to output guidance information for guiding the user in operating the operation section if the determination processing section determines that the operation section receives no operation from the user.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: July 17, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Shinji Ono
  • Patent number: 10026027
    Abstract: A printing control apparatus connected to a printing apparatus operated in a standby state and a power saving state includes a reception unit that receives a printing request for causing the printing apparatus to execute printing, a generation unit that generates printing data in accordance with the printing request received by the reception unit, a determination unit that determines whether or not the printing apparatus is in the power saving state, and a transmission unit that transmits return data for returning the printing apparatus from the power saving state to the standby state before the printing data generated by the generation unit is transmitted in a case where the determination unit determines that the printing apparatus is in the power saving state, and does not transmit the return data in a case where the determination unit determines that the printing apparatus is not in the power saving state.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: July 17, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideaki Ooba
  • Patent number: 10020741
    Abstract: A power supply control system delivers regulated power to a load via a delivery cable. The power supply control system includes a power stage operable to deliver power to the load at a first regulated voltage level and a second regulated voltage level. A cable offset voltage unit generates an offset voltage signal representing a drop in voltage across the delivery cable. The offset voltage signal is generated based on a first cable drop compensation value when the power stage is operated to deliver power at the first regulated voltage level and based on a second cable drop compensation value when the power stage is operated to deliver power at the second regulated voltage level. A controller coupled to the power stage and the cable offset voltage unit controls the power stage to deliver the regulated power to the load based at least in part on the offset voltage signal.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: July 10, 2018
    Assignee: Dialog Semiconductor Inc.
    Inventors: Jianming Yao, Hien Huu Bui, David Nguyen
  • Patent number: 9985536
    Abstract: A first switch and a second switch connected in series to both terminals of a DC power source. A signal generation circuit generates a feedback signal based on the DC voltage detected by the voltage detection circuit, and outputs the feedback signal, the feedback signal for turning the first and second switches on and off. A burst oscillation circuit that generates a burst oscillation signal based on a feedback signal and turns the first switch element and the second switch element on and off based on the burst oscillation signal when the standby state is detected. The burst oscillation circuit comprises a capacitor and a rapid charge circuit. When this device returns from standby state to normal state, the rapid charging circuit charges the capacitor after the feedback signal exceeds the cancellation threshold voltage.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: May 29, 2018
    Assignee: SANKEN ELECTRIC CO., LTD.
    Inventors: Takeki Sugahara, Osamu Ohtake
  • Patent number: 9958813
    Abstract: An image forming apparatus includes a transferring belt, photosensitive drums, primary transferring parts, a transfer voltage applying part, a resistance value measuring part, a cleaning device, a pre-brush, a pre-brush current detecting part and a transfer voltage correcting part. The pre-brush applies a cleaning charge voltage to the remained toner at an upstream side from the cleaning device in the rotation direction of the transferring belt. The transfer voltage correcting part, by a subject resistance value of the primary transferring part measured by the resistance value measuring part, corrects a transfer voltage of the primary transferring part. As a measurement condition, if a change quantity of the pre-brush current from the last transfer voltage correction is equal to or more than a predetermined change threshold, the resistance value measuring part executes measurement of the subject resistance value and the transfer voltage correcting part executes correction of the transfer voltage.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: May 1, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Naoki Iwamoto
  • Patent number: 9946215
    Abstract: An image forming apparatus having a power saving mode includes a first power supply configured to operate in the power saving mode, a second power supply configured to operate in a mode other than the power saving mode, a heater configured to generate heat when power is fed from the first power supply or the second power supply, and a control circuit configured to control power feeding from the first power supply to the heater and activation or stopping of the second power supply. The control circuit is configured to control, based on an instruction to shift from the power saving mode to another mode, so that power feeding from the first power supply to the heater is cut off, and the second power supply is activated to start power feeding from the second power supply to the heater.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: April 17, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhisa Koizumi, Teruhiko Suzuki, Eijiro Atarashi, Toshinori Kimura
  • Patent number: 9933737
    Abstract: An image forming apparatus includes a staple unit, a print unit, a power supply, and a control unit. When the time that elapses after completion of a print job equals a standby time, the control unit stops supply of electric power to the staple unit. When it is predicted that the printout of a print job does not require stapling, the control unit sets the standby time to a first time. When it is predicted that stapling is required, the control unit sets the standby time to a second time that is longer than the first time.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: April 3, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Tsubasa Miyamae
  • Patent number: 9915995
    Abstract: An image capturing apparatus comprises: an image capturing unit configured to generate image data; an adding unit configured to add additional information every predetermined amount of pixel data in the image data; a transmission unit configured to transmit image data by the amount of pixel data to which the additional information is added; an image processing unit configured to perform image processing on the image data; and a power control unit configured to control power supply when the transmission unit transmits the pixel data, based on the additional information, wherein the power control unit restricts the power supply to less than a predetermined power amount in a case where the additional information indicates a predetermined state, and performs power supply at the predetermined power amount in a case where the additional information does not indicate the predetermined state.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: March 13, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshiyuki Takada
  • Patent number: 9893544
    Abstract: A power control and delivery system for improving and prolonging the performance of batteries through a total power source comprised of a battery, a power controller and a power buffer.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: February 13, 2018
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Jesse Chan
  • Patent number: 9883077
    Abstract: An electronic apparatus includes a job processor to perform a job of the image forming apparatus, a storage unit to store apparatus use information on a user of the image forming apparatus and job performance of the job processor, a determination unit to determine whether the user is changed or not, and a controller to delete the apparatus use information on a previous user if it is determined that the user is changed.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: January 30, 2018
    Assignee: S-PRINTING SOLUTION CO., LTD.
    Inventors: Chang-min Han, Hyung-ho Lee, Ki-hun Kim, Jin-ah Heo
  • Patent number: 9880519
    Abstract: A transfer apparatus includes a transfer unit, a detector, a supplying unit, and a controller. The transfer unit transfers a toner image onto an object onto which transfer is to be performed. The detector detects humidity. The supplying unit includes a constant voltage supplying unit that supplies a transfer voltage that is a constant voltage to the transfer unit, and a constant current supplying unit that supplies a transfer current that is a constant current to the transfer unit. The controller controls the supplying unit such that the transfer voltage is supplied from the constant voltage supplying unit to the transfer unit when transfer is performed in a case where the detected humidity is not greater than a threshold, and the transfer current is supplied from the constant current supplying unit to the transfer unit when transfer is performed in a case where the detected humidity exceeds the threshold.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: January 30, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Ayaka Miyoshi
  • Patent number: 9836012
    Abstract: An image forming apparatus (1) includes image bearing members (31), transfer members (52), and a power supply section (57). The image bearing members (31) each bear one of toner images in different colors from one another. The transfer members (52) are located opposite to the image bearing members (31). The power supply section (57) charges the transfer members (52). Through the above, the toner images on the respective image bearing members (31) are transferred to a moving transfer target (51). The power supply section (57) includes a power supply device (58 or 58a) connected to at least two of the transfer members (52). The transfer members (52) connected to the power supply device (58 or 58a) are each located at a position shifted upstream or downstream of a corresponding one of the image bearing members (31) in a moving direction (X) of the transfer target (51).
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: December 5, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Teppei Shibuya
  • Patent number: 9838969
    Abstract: A method for setting operation modes of a group of communication devices in a communication network, wherein the group of communication devices comprises a first communication device and at least a second communication device, the method comprises receiving information from at least one device of said group of communication devices, determining an operation mode based on the received information and setting an operation mode on at least one of the other communication devices of the group of communication devices to the determined operation mode, wherein information is communicated between the two devices including state information and/or instructions to set the operation mode of at least one of the other communication device of the group of communication devices to the determined operation mode.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: December 5, 2017
    Assignee: Sony Mobile Communications Inc.
    Inventors: Scott Vance, Patrik Lundell, Par Hakansson
  • Patent number: 9744470
    Abstract: To suppress unintended rapid acceleration of a vehicle and the like while suppressing a wire length of a feeding system in the entire layout in section-divided feed using pulse width modulation. A clock generation unit included in a feeding device generates an internal clock having a phase aligned based on a reset signal supplied from a higher-level device that controls a vehicle speed of the vehicle, the reset signal being commonly supplied to another feeding device. A pulse width modulation unit counts the internal clock, and generates a pulse having a pulse width (duty ratio) according to an instruction of the vehicle speed from the higher-level device based on the count value. A driver supplies a pulsed drive voltage having the duty ratio, to which the pulse width modulation has been applied by the pulse width modulation unit, to a section allocated to the driver.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: August 29, 2017
    Assignee: TOMY TEC CO., LTD.
    Inventor: Morio Sato
  • Patent number: 9703252
    Abstract: A power supply controlling device includes: a direct-current power supply configured to output a direct-current voltage; an alternating-current power supply configured to output one selected from between a superimposed voltage obtained by superimposing an alternating-current voltage onto the direct-current voltage and the direct-current voltage; a bypass capacitor configured to partially store therein an output from the alternating-current power supply and configured to, when the direct-current voltage is output from the direct-current power supply while no electric charge is stored therein, store therein a second direct current being a part of a first direct current output from the direct-current power supply in conjunction with the output of the direct-current voltage; and a power supply controlling unit configured to cause the direct-current power supply to control a level of the direct-current voltage based on a target value for the first direct current and a value indicating the second direct current.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: July 11, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuuto Hakamada, Masahide Nakaya, Jyunya Sakuraba
  • Patent number: 9690229
    Abstract: An image forming apparatus includes a rotator, a driving control portion, and a layer thickness control portion. The rotator conveys toner to contact position to an image carrying member, and supplies toner to the image carrying member at the contact position. The driving control portion controls rotation of the rotator so as to rotate the rotator during a developing period, and stop the rotation of the rotator after a set time has elapsed since an end of the developing period. The layer thickness control portion causes the rotator to carry toner by controlling a potential difference between a potential of the rotator and a predetermined potential so that toner on the rotator at the contact position has a first layer thickness during the developing period and has a second layer thickness while the rotation of the rotator is stopped, the second layer thickness being thicker than the first layer thickness.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: June 27, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Tamotsu Shimizu
  • Patent number: 9632468
    Abstract: An arrangement structure of a main power switch includes an apparatus body, the main power switch, and a movable member. The apparatus body has a dead space on a front side. The main power switch is disposed in the dead space. The movable member is disposed in the apparatus body to cover the main power switch. The movable member is drawable from the apparatus body in a horizontal direction. The movable member includes an opening opposed to the main power switch, to expose the main power switch to outside.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: April 25, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuta Ueda, Yuki Sato, Mami Akiyama, Shiro Akama, Hiroki Ishimitsu, Sakie Higuchi
  • Patent number: 9581950
    Abstract: An image forming apparatus includes a first power supply unit configured to generate first output power, a second power supply unit configured to generate second output power, a switching unit disposed on the primary side of the second power supply unit, a monitoring unit configured to monitor the second output power generated by the second power supply unit, a power source control unit supplied with the first output power, and configured to turn the switching unit ON or OFF, and a control unit supplied with the first output power, and configured to control operations of the power source control unit. When the second output power is lower than a threshold value, the power source control unit turns the switching unit OFF and then back to ON in a state where the first output power generated by the first power supply unit is supplied to the control unit.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: February 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kiyokazu Umimura
  • Patent number: 9568873
    Abstract: An image forming apparatus that shifts between a first power state and a second power state where power consumption is less than in the first power state. The image forming apparatus includes a detecting unit that includes a plurality of elements arranged on a line or in a grid to detect heat emitted from an object and a determination unit that determines whether to shift the image forming apparatus from the second power state to the first power state based on a detection result of the detecting unit and that controls the shift.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: February 14, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yusuke Horishita, Yuichi Hagiwara
  • Patent number: 9485820
    Abstract: A lighting device includes a power conversion unit, an impedance adjustment unit, a first control unit, and a second control unit. The power conversion unit is configured to convert input power to direct-current power used for a light source. The impedance adjustment unit is formed of a series circuit of a resistor element and a switch element and is coupled to the light source in parallel, relative to the power conversion unit. The second control unit is configured to cause the power conversion unit to operate, for each burst cycle, for an operation period which is not longer than the burst cycle, and increase and reduce the ratio of the operation period to the burst cycle. The first control unit is configured to make the switch element conductive for a predetermined adjustment period which is not longer than the operation period, during the operation period.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: November 1, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shigeru Ido, Hiroshi Kido, Akinori Hiramatu, Junichi Hasegawa, Daisuke Ueda
  • Patent number: 9454121
    Abstract: In an image forming apparatus to which a finisher is connected, a power source control unit shifts the image forming apparatus to a power saving state. The image forming apparatus is inhibited from being shifted to the power saving state when it is detected that a sheet for which a binding process is to be performed is set in the finisher. The image forming apparatus may be permitted to be shifted to the power saving state when it is not detected that the sheet is set in the finisher.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: September 27, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Atsushi Hikichi