Patents by Inventor Kenichi Karino
Kenichi Karino 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).
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Patent number: 10429789Abstract: An image forming apparatus of the present invention is provided with, between a commercial alternating power supply and a pressure roller, a conductive path which is different from a power supply path from the commercial alternating power supply to a heater, and with a capacitive element on the conductive path.Type: GrantFiled: April 19, 2018Date of Patent: October 1, 2019Assignee: Canon Kabushiki KaishaInventor: Kenichi Karino
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Publication number: 20180307177Abstract: An image forming apparatus of the present invention is provided with, between a commercial alternating power supply and a pressure roller, a conductive path which is different from a power supply path from the commercial alternating power supply to a heater, and with a capacitive element on the conductive path.Type: ApplicationFiled: April 19, 2018Publication date: October 25, 2018Inventor: Kenichi Karino
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Patent number: 9710205Abstract: This invention provides an image forming apparatus which communicates with a plurality of cartridges without increasing its circuit dimension. To accomplish this, the apparatus includes a control circuit having an output terminal for outputting a clock signal and data signal used to generate a transmission signal to the cartridge, and an input terminal for receiving a transmission signal from the cartridge. The apparatus includes N connectors each having the first electrode which is connected to the first electrode surface of each cartridge, and the second electrode which is connected to the second electrode surface. The apparatus includes a 1-to-N first signal line for connecting the input terminal to the N first electrodes, and a 1-to-N second signal line for connecting the output terminal to the N second electrodes. The apparatus includes N switching units which are interposed between 1-to-N branch points and the second electrodes on the second signal line.Type: GrantFiled: September 29, 2014Date of Patent: July 18, 2017Assignee: Canon Kabushiki KaishaInventors: Kenichi Karino, Yuuji Takayama, Hiroyuki Watanabe
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Patent number: 9088473Abstract: In a data communication system according to one aspect of the present invention, a data carrier driving apparatus, which communicates with a data carrier apparatus using a rectification smoothing circuit for generating a power supply voltage, controls a pulse width of each pulse of a clock signal (pulse voltage) supplied to the data carrier apparatus. The data carrier driving apparatus sets the duration of each pulse of a pulse voltage generated by the data carrier driving apparatus, so as to suppress a decrease in the level of the pulse voltage caused by a charging operation for the rectification smoothing circuit, particularly, such that the duration in which the pulse voltage becomes a high-level voltage is longer than or equal to the duration in which the pulse voltage becomes a low-level voltage during one period.Type: GrantFiled: December 11, 2013Date of Patent: July 21, 2015Assignee: Canon Kabushiki KaishaInventor: Kenichi Karino
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Publication number: 20150015907Abstract: This invention provides an image forming apparatus which communicates with a plurality of cartridges without increasing its circuit dimension. To accomplish this, the apparatus includes a control circuit having an output terminal for outputting a clock signal and data signal used to generate a transmission signal to the cartridge, and an input terminal for receiving a transmission signal from the cartridge. The apparatus includes N connectors each having the first electrode which is connected to the first electrode surface of each cartridge, and the second electrode which is connected to the second electrode surface. The apparatus includes a 1-to-N first signal line for connecting the input terminal to the N first electrodes, and a 1-to-N second signal line for connecting the output terminal to the N second electrodes. The apparatus includes N switching units which are interposed between 1-to-N branch points and the second electrodes on the second signal line.Type: ApplicationFiled: September 29, 2014Publication date: January 15, 2015Inventors: Kenichi Karino, Yuuji Takayama, Hiroyuki Watanabe
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Patent number: 8880911Abstract: The power supply includes an output unit that converts a DC voltage and outputs the DC voltage; a capacitor that stabilizes the DC voltage output from the output unit, the power supply being able to be operated in a power saving mode in which a power consumption is reduced by stopping a whole or part of an operation of a load operated by the DC voltage output from the output unit; a detection unit that detects that a power is cut off; a discharging load that discharges the capacitor; and a control unit that performs control so as to operate the charging load when the detection unit detects that the power is cut off during the operation in the power saving mode.Type: GrantFiled: September 6, 2011Date of Patent: November 4, 2014Assignee: Canon Kabushiki KaishaInventors: Kenichi Karino, Nobuyuki Uchiyama
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Patent number: 8845056Abstract: This invention provides an image forming apparatus which communicates with a plurality of cartridges without increasing its circuit dimension. To accomplish this, the apparatus includes a control circuit having an output terminal for outputting a clock signal and data signal used to generate a transmission signal to the cartridge, and an input terminal for receiving a transmission signal from the cartridge. The apparatus includes N connectors each having the first electrode which is connected to the first electrode surface of each cartridge, and the second electrode which is connected to the second electrode surface. The apparatus includes a 1-to-N first signal line for connecting the input terminal to the N first electrodes, and a 1-to-N second signal line for connecting the output terminal to the N second electrodes. The apparatus includes N switching units which are interposed between 1-to-N branch points and the second electrodes on the second signal line.Type: GrantFiled: June 28, 2012Date of Patent: September 30, 2014Assignee: Canon Kabushiki KaishaInventors: Kenichi Karino, Yuuji Takayama, Hiroyuki Watanabe
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Patent number: 8774669Abstract: In a switching power source, an OFF-period of switching is set according to a resonance cycle when a transformer is driven.Type: GrantFiled: June 20, 2011Date of Patent: July 8, 2014Assignee: Canon Kabushiki KaishaInventors: Minoru Hayasaki, Kenichi Karino
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Publication number: 20140169443Abstract: In a data communication system according to one aspect of the present invention, a data carrier driving apparatus, which communicates with a data carrier apparatus using a rectification smoothing circuit for generating a power supply voltage, controls a pulse width of each pulse of a clock signal (pulse voltage) supplied to the data carrier apparatus. The data carrier driving apparatus sets the duration of each pulse of a pulse voltage generated by the data carrier driving apparatus, so as to suppress a decrease in the level of the pulse voltage caused by a charging operation for the rectification smoothing circuit, particularly, such that the duration in which the pulse voltage becomes a high-level voltage is longer than or equal to the duration in which the pulse voltage becomes a low-level voltage during one period.Type: ApplicationFiled: December 11, 2013Publication date: June 19, 2014Applicant: CANON KABUSHIKI KAISHAInventor: Kenichi Karino
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Publication number: 20120268787Abstract: This invention provides an image forming apparatus which communicates with a plurality of cartridges without increasing its circuit dimension. To accomplish this, the apparatus includes a control circuit having an output terminal for outputting a clock signal and data signal used to generate a transmission signal to the cartridge, and an input terminal for receiving a transmission signal from the cartridge. The apparatus includes N connectors each having the first electrode which is connected to the first electrode surface of each cartridge, and the second electrode which is connected to the second electrode surface. The apparatus includes a 1-to-N first signal line for connecting the input terminal to the N first electrodes, and a 1-to-N second signal line for connecting the output terminal to the N second electrodes. The apparatus includes N switching units which are interposed between 1-to-N branch points and the second electrodes on the second signal line.Type: ApplicationFiled: June 28, 2012Publication date: October 25, 2012Inventors: Kenichi Karino, Yuuji Takayama, Hiroyuki Watanabe
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Patent number: 8220894Abstract: This invention provides an image forming apparatus which communicates with a plurality of cartridges without increasing its circuit dimension. To accomplish this, the apparatus includes a control circuit having an output terminal for outputting a clock signal and data signal used to generate a transmission signal to the cartridge, and an input terminal for receiving a transmission signal from the cartridge. The apparatus includes N connectors each having the first electrode which is connected to the first electrode surface of each cartridge, and the second electrode which is connected to the second electrode surface. The apparatus includes a 1-to-N first signal line for connecting the input terminal to the N first electrodes, and a 1-to-N second signal line for connecting the output terminal to the N second electrodes. The apparatus includes N switching units which are interposed between 1-to-N branch points and the second electrodes on the second signal line.Type: GrantFiled: November 7, 2007Date of Patent: July 17, 2012Assignee: Canon Kabushiki KaishaInventors: Kenichi Karino, Yuuji Takayama, Hiroyuki Watanabe
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Publication number: 20120080947Abstract: The power supply includes an output unit that converts a DC voltage and outputs the DC voltage; a capacitor that stabilizes the DC voltage output from the output unit, the power supply being able to be operated in a power saving mode in which a power consumption is reduced by stopping a whole or part of an operation of a load operated by the DC voltage output from the output unit; a detection unit that detects that a power is cut off; a discharging load that discharges the capacitor; and a control unit that performs control so as to operate the charging load when the detection unit detects that the power is cut off during the operation in the power saving mode.Type: ApplicationFiled: September 6, 2011Publication date: April 5, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Kenichi Karino, Nobuyuki Uchiyama
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Publication number: 20110311259Abstract: In a switching power source, an OFF-period of switching is set according to a resonance cycle when a transformer is driven.Type: ApplicationFiled: June 20, 2011Publication date: December 22, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Minoru Hayasaki, Kenichi Karino
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Publication number: 20080297820Abstract: This invention provides an image forming apparatus which communicates with a plurality of cartridges without increasing its circuit dimension. To accomplish this, the apparatus includes a control circuit having an output terminal for outputting a clock signal and data signal used to generate a transmission signal to the cartridge, and an input terminal for receiving a transmission signal from the cartridge. The apparatus includes N connectors each having the first electrode which is connected to the first electrode surface of each cartridge, and the second electrode which is connected to the second electrode surface. The apparatus includes a 1-to-N first signal line for connecting the input terminal to the N first electrodes, and a 1-to-N second signal line for connecting the output terminal to the N second electrodes. The apparatus includes N switching units which are interposed between 1-to-N branch points and the second electrodes on the second signal line.Type: ApplicationFiled: November 7, 2007Publication date: December 4, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Kenichi Karino, Yuuji Takayama, Hiroyuki Watanabe