Patents by Inventor Hiroshi Takabayashi
Hiroshi Takabayashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 7914106Abstract: A temperature detection circuit acquires first temperature data detected by a temperature sensor corresponding to a heater of a recording head in a state in which no electric current is flowed into the heater, and second temperature data for the heater in a state in which an electric current is flowed into the heater. Correction data for correcting the temperature data detected by the temperature sensor is obtained based on the first and second temperature data. The temperature data detected by the temperature sensor is corrected based on the correction data.Type: GrantFiled: February 17, 2010Date of Patent: March 29, 2011Assignee: Canon Kabushiki KaishaInventors: Hiroshi Takabayashi, Takatsuna Aoki
-
Publication number: 20100321441Abstract: A printing apparatus and ink discharge failure detection method capable of precisely detecting temperature information corresponding to each nozzle are provided. Temperatures of respective electrothermal transducers (heaters) are measured on the basis of outputs from a plurality of sensors corresponding to the respective heaters. The temperatures of the heaters at a predetermined timing during a printing operation are predicted on the basis of the temperature change profiles of the respective heaters that are generated by energizing the heaters. A plurality of thresholds corresponding to nozzle states are generated on the basis of the predicted temperatures and the driving conditions of an inkjet printhead, and it is controlled to execute temperature measurement at the predetermined timing. A temperature measured under the control is compared with the respective generated thresholds, and the nozzle state is identified on the basis of the comparison results.Type: ApplicationFiled: August 27, 2010Publication date: December 23, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Takatsuna Aoki, Hiroshi Takabayashi, Seiichiro Karita, Isao Hayashi
-
Publication number: 20100321439Abstract: The present invention provides a recording head that has a driving circuit performing driving by dividing a plurality of heaters into a plurality of blocks and supplying electric current on a block-by-block basis based on recording data; a constant current source applying a common bias current to each temperature sensor group obtained by dividing temperature sensors disposed in correspondence to each heater of a plurality of heaters into blocks; a voltage output circuit having a switching element that turns electric current supply to the temperature sensors of the selected temperature sensor group ON and OFF, and obtaining a voltage generated at both terminals of the selected temperature sensor by supplying an electric current to the temperature sensor; and an amplifier circuit amplifying the detection voltages.Type: ApplicationFiled: September 1, 2010Publication date: December 23, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Hideo Kanno, Isao Hayashi, Seiichiro Karita, Hiroshi Takabayashi, Takatsuna Aoki
-
Patent number: 7806503Abstract: A printing apparatus and ink discharge failure detection method capable of precisely detecting temperature information corresponding to each nozzle are provided. Temperatures of respective electrothermal transducers (heaters) are measured on the basis of outputs from a plurality of sensors corresponding to the respective heaters. The temperatures of the heaters at a predetermined timing during a printing operation are predicted on the basis of the temperature change profiles of the respective heaters that are generated by energizing the heaters. A plurality of thresholds corresponding to nozzle states are generated on the basis of the predicted temperatures and the driving conditions of an inkjet printhead, and it is controlled to execute temperature measurement at the predetermined timing. A temperature measured under the control is compared with the respective generated thresholds, and the nozzle state is identified on the basis of the comparison results.Type: GrantFiled: June 15, 2007Date of Patent: October 5, 2010Assignee: Canon Kabushiki KaishaInventors: Takatsuna Aoki, Hiroshi Takabayashi, Seiichiro Karita, Isao Hayashi
-
Patent number: 7802866Abstract: A recording head is provided that detects temperature information corresponding to a plurality of electro-thermal transducers. The recording head includes a driving circuit that performs driving by dividing a plurality of heaters into a plurality of blocks and supplies electric current on a block-by-block basis based on recording data. A constant current source applies a common bias current to each temperature sensor group obtained by dividing temperature sensors disposed in correspondence to each heater of a plurality of heaters into blocks. A voltage output circuit is further included having a switching element turns an electric current supply to the temperature sensors of the selected temperature sensor group ON and OFF, and of which obtains a voltage generated at both terminals of the selected temperature sensor by supplying an electric current to the temperature sensor; and an amplifier circuit amplifying the detection voltages.Type: GrantFiled: June 13, 2007Date of Patent: September 28, 2010Assignee: Canon Kabushiki KaishaInventors: Hideo Kanno, Isao Hayashi, Seiichiro Karita, Hiroshi Takabayashi, Takatsuna Aoki
-
Publication number: 20100194810Abstract: In order to provide a compact and highly reliable recording head enabling precise detection of temperature information on each nozzle and rapid as well as highly accurate detection on nozzles with a discharge defect, a liquid discharge head including a liquid discharge head with a plurality of electrothermal transducing members provided on a substrate to generate heat energy for discharging liquid from a discharge port includes a temperature detecting element formed immediately under each of the plurality of electrothermal transducing members to sandwich insulating film and a temperature detecting circuit for detecting temperature information from each of the temperature detecting elements.Type: ApplicationFiled: April 9, 2010Publication date: August 5, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Hiroshi Takabayashi, Hideo Kanno, Takatsuna Aoki, Seiichiro Karita
-
Publication number: 20100149237Abstract: A temperature detection circuit acquires first temperature data detected by a temperature sensor corresponding to a heater of a recording head in a state in which no electric current is flowed into the heater, and second temperature data for the heater in a state in which an electric current is flowed into the heater. Correction data for correcting the temperature data detected by the temperature sensor is obtained based on the first and second temperature data. The temperature data detected by the temperature sensor is corrected based on the correction data.Type: ApplicationFiled: February 17, 2010Publication date: June 17, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Hiroshi Takabayashi, Takatsuna Aoki
-
Patent number: 7722148Abstract: A compact and highly reliable recording head enabling precise detection of temperature information for each nozzle and rapid as well as highly accurate detection of nozzles with a discharge defect can be achieved. A plurality of electrothermal transducing members is provided on a substrate to generate heat energy for discharging liquid from discharge ports. A temperature detecting element formed immediately under each electrothermal transducing member to sandwich an insulating film and a temperature detecting circuit for detecting temperature information from each temperature detecting element are also provided.Type: GrantFiled: March 22, 2007Date of Patent: May 25, 2010Assignee: Canon Kabushiki KaishaInventors: Hiroshi Takabayashi, Hideo Kanno, Takatsuna Aoki, Seiichiro Karita
-
Patent number: 7690751Abstract: A temperature detection circuit acquires first temperature data detected by a temperature sensor corresponding to a heater of a recording head in a state in which no electric current is flowed into the heater, and second temperature data for the heater in a state in which an electric current is flowed into the heater. Correction data for correcting the temperature data detected by the temperature sensor is obtained based on the first and second temperature data. The temperature data detected by the temperature sensor is corrected based on the correction data.Type: GrantFiled: May 15, 2007Date of Patent: April 6, 2010Assignee: Canon Kabushiki KaishaInventors: Hiroshi Takabayashi, Takatsuna Aoki
-
Publication number: 20080266362Abstract: A recording head includes electrothermal transducers associated with temperature sensing elements. A method for driving the recording head includes supplying driving energy to the electrothermal transducer, and evaluating a temperature change in a temperature fall interval, occurring after supplying of driving energy to the electrothermal transducer, based on temperature information acquired from the temperature sensing element. The method further includes changing a setting value of the driving energy supplied to the electrothermal transducer, determining an energy value for driving the electrothermal transducer based on the evaluated temperature change and an energy value supplied to the electrothermal conversion element, and recording data on a recording medium by driving the electrothermal transducer according to the determined energy value.Type: ApplicationFiled: April 11, 2008Publication date: October 30, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Takatsuna Aoki, Hiroshi Takabayashi, Seiichiro Karita
-
Publication number: 20070291066Abstract: A temperature detection circuit acquires first temperature data detected by a temperature sensor corresponding to a heater of a recording head in a state in which no electric current is flowed into the heater, and second temperature data for the heater in a state in which an electric current is flowed into the heater. Correaction data for correcting the temperature data detected by the temperature sensor is obtained based on the first and second temperature data. The temperature data detected by the temperature sensor is corrected based on the correaction data.Type: ApplicationFiled: May 15, 2007Publication date: December 20, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Hiroshi Takabayashi, Takatsuna Aoki
-
Publication number: 20070291068Abstract: A printing apparatus and ink discharge failure detection method capable of precisely detecting temperature information corresponding to each nozzle are provided. Temperatures of respective electrothermal transducers (heaters) are measured on the basis of outputs from a plurality of sensors corresponding to the respective heaters. The temperatures of the heaters at a predetermined timing during a printing operation are predicted on the basis of the temperature change profiles of the respective heaters that are generated by energizing the heaters. A plurality of thresholds corresponding to nozzle states are generated on the basis of the predicted temperatures and the driving conditions of an inkjet printhead, and it is controlled to execute temperature measurement at the predetermined timing. A temperature measured under the control is compared with the respective generated thresholds, and the nozzle state is identified on the basis of the comparison results.Type: ApplicationFiled: June 15, 2007Publication date: December 20, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Takatsuna Aoki, Hiroshi Takabayashi, Seiichiro Karita, Isao Hayashi
-
Publication number: 20070291081Abstract: The present invention provides a recording head that has a driving circuit performing driving by dividing a plurality of heaters into a plurality of blocks and supplying electric current on a block-by-block basis based on recording data; a constant current source applying a common bias current to each temperature sensor group obtained by dividing temperature sensors disposed in correspondence to each heater of a plurality of heaters into blocks; a voltage output circuit having a switching element that turns electric current supply to the temperature sensors of the selected temperature sensor group ON and OFF, and obtaining a voltage generated at both terminals of the selected temperature sensor by supplying an electric current to the temperature sensor; and an amplifier circuit amplifying the detection voltages.Type: ApplicationFiled: June 13, 2007Publication date: December 20, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Hideo Kanno, Isao Hayashi, Seiichiro Karita, Hiroshi Takabayashi, Takatsuna Aoki
-
Publication number: 20070229566Abstract: In order to provide a compact and highly reliable recording head enabling precise detection of temperature information on each nozzle and rapid as well as highly accurate detection on nozzles with a discharge defect, a liquid discharge head including a liquid discharge head with a plurality of electrothermal transducing members provided on a substrate to generate heat energy for discharging liquid from a discharge port includes a temperature detecting element formed immediately under each of the plurality of electrothermal transducing members to sandwich insulating film and a temperature detecting circuit for detecting temperature information from each of the temperature detecting elements.Type: ApplicationFiled: March 22, 2007Publication date: October 4, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Hiroshi Takabayashi, Hideo Kanno, Takatsuna Aoki, Seiichiro Karita
-
Patent number: 6702413Abstract: A liquid discharge head which comprises an element substrate having on one surface thereof energy generating element for generating energy to be utilized for discharging liquid from a liquid discharge port, and a liquid supply port communicated with the liquid discharge port, a printed substrate provided with an external fetch electrode, and an IC component for control use for the energy generating element having provided therefor an output side electrode connected with the energy generating element and an input side electrode connected with the external fetch electrode. For this liquid discharge head, at least the aforesaid output side electrode of the IC component for control use is provided for the one surface of the element substrate.Type: GrantFiled: November 15, 2001Date of Patent: March 9, 2004Assignee: Canon Kabushiki KaishaInventors: Hiroshi Takabayashi, Tadayoshi Muta, Toru Yamane
-
Patent number: 6573882Abstract: A liquid crystal device is sequentially illuminated with three primary color lights in three primary color illumination steps including an off period (1) before, (2) before and after and (3) after the primary color light period, respectively. As a result, each primary color light illumination step includes a black picture display period corresponding to the off period, whereby motion picture blurring and color splitting can be suppressed without requiring a complicated circuit for generating new data for the black picture display.Type: GrantFiled: May 19, 2000Date of Patent: June 3, 2003Assignee: Canon Kabushiki KaishaInventor: Hiroshi Takabayashi
-
Publication number: 20020149636Abstract: A liquid discharge head which comprises an element substrate having on one surface thereof energy generating element for generating energy to be utilized for discharging liquid from a liquid discharge port, and a liquid supply port communicated with the liquid discharge port, a printed substrate provided with an external fetch electrode, and an IC component for control use for the energy generating element having provided therefor an output side electrode connected with the energy generating element and an input side electrode connected with the external fetch electrode. For this liquid discharge head, at least the aforesaid output side electrode of the IC component for control use is provided for the one surface of the element substrate.Type: ApplicationFiled: November 15, 2001Publication date: October 17, 2002Inventors: Hiroshi Takabayashi, Tadayoshi Muta, Toru Yamane
-
Patent number: 6266119Abstract: A liquid crystal apparatus is constituted by a liquid crystal device including a pair of substrates at least one of which is provided with first electrodes, and a liquid crystal disposed between the substrates; a plurality of driver devices disposed on said at least one substrate at a periphery thereof and electrically connected to the first electrodes; a driver board for supplying signals to the driver devices, disposed in parallel with the driver devices; second electrodes disposed on said at least one substrate and electrically connected to the driver devices; and a plurality of connection sheets disposed between the driver board and said at least one substrate and each electrically connecting each of the driver devices to the driver board via the second electrodes.Type: GrantFiled: January 12, 1999Date of Patent: July 24, 2001Assignee: Canon Kabushiki KaishaInventors: Masanori Takahashi, Hiroshi Takabayashi, Hideo Mori, Toshimichi Ouchi
-
Patent number: 6216989Abstract: A support structure for a body to be supported, such as a display unit, includes a support base, a stand support held upright by the support base, and an attachment member for attaching a body to be supported thereto laterally held by the stand support. The stand support and the attachment member may be coupled to each other in an electrically insulated state. The body to be supported may be mounted on the attachment member via a tilting mechanism for holding the support body at an arbitrarily vertically tilted angle from a home position.Type: GrantFiled: March 22, 1996Date of Patent: April 17, 2001Assignee: Canon Kabushiki KaishaInventors: Yasushi Shioya, Osamu Hoshino, Takao Miyamoto, Akio Yoshida, Hiroshi Takabayashi, Toyohide Miyazaki, Toshiaki Itazawa, Takashi Yamamoto
-
Patent number: 6172878Abstract: A multi-element module is constituted by a substrate having thereon a plurality of first electrodes, a plurality of electrical elements each having at least one second electrode and disposed so that its second electrode is aligned with a first electrode in an opposed relationship, and an adhesive member disposed between the substrate and the plurality of electrical elements to ensure electrical connection between the first electrodes and the second electrodes. The adhesive member comprises an adhesive layer contacting and bonding the electrical elements to the substrate, and an anisotropic conductive layer comprising a resin and electroconductive particles dispersed in the resin. The anisotropic conductive film is disposed between the adhesive layer and the substrate so as to insulate adjacent electrodes from each other while electrically connects the first and second electrodes, even when the electrical elements having second electrodes different in thickness.Type: GrantFiled: December 28, 1998Date of Patent: January 9, 2001Assignee: Canon Kabushiki KaishaInventors: Hiroshi Takabayashi, Masanori Takahashi, Yasushi Shioya, Kenji Niibori