Patents by Inventor Katsuhiko Okitsu
Katsuhiko Okitsu 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: 8931777Abstract: A multi-feed detection apparatus may include an ultrasonic transmission unit, arranged on one side of a conveyance path configured to convey a sheet-like member, for transmitting an ultrasonic wave toward the conveyance path, an ultrasonic reception unit, arranged on the other side of the conveyance path, for receiving the ultrasonic wave from the ultrasonic transmission unit, and a multi-feed determination unit for determining, based on the reception result of the ultrasonic wave received by the ultrasonic reception unit, whether multi-feed of sheet-like members has occurred. The ultrasonic transmission surface of the ultrasonic transmission unit is inclined with respect to the conveyance path, and the ultrasonic reception surface of the ultrasonic reception unit is arranged to be almost parallel to the conveyance path.Type: GrantFiled: December 4, 2013Date of Patent: January 13, 2015Assignee: Canon Denshi Kabushiki KaishaInventor: Katsuhiko Okitsu
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Publication number: 20140091516Abstract: A multi-feed detection apparatus may include an ultrasonic transmission unit, arranged on one side of a conveyance path configured to convey a sheet-like member, for transmitting an ultrasonic wave toward the conveyance path, an ultrasonic reception unit, arranged on the other side of the conveyance path, for receiving the ultrasonic wave from the ultrasonic transmission unit, and a multi-feed determination unit for determining, based on the reception result of the ultrasonic wave received by the ultrasonic reception unit, whether multi-feed of sheet-like members has occurred. The ultrasonic transmission surface of the ultrasonic transmission unit is inclined with respect to the conveyance path, and the ultrasonic reception surface of the ultrasonic reception unit is arranged to be almost parallel to the conveyance path.Type: ApplicationFiled: December 4, 2013Publication date: April 3, 2014Applicant: CANON DENSHI KABUSHIKI KAISHAInventor: Katsuhiko OKITSU
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Patent number: 8582320Abstract: There is provided a self-excited switching power supply circuit. A cycle control capacitor is charged with a flyback voltage generated in a feedback winding of a transformer during OFF operation period in which an exciting current does not flow in a primary winding of the transformer. An OFF control capacitor the charging speed of which changes ON operation period is charged with the charging voltage of the cycle control capacitor during the ON operation period in which an exciting current flows in the primary winding. The charging voltage of the cycle control capacitor is changed with a periodic cycle Tc sufficiently longer than an oscillation cycle To to make the oscillation cycle To of continuous oscillating operation variable based on the periodic cycle Tc. As a result, the frequency of a harmonic is distributed.Type: GrantFiled: March 7, 2012Date of Patent: November 12, 2013Assignee: SMK CorporationInventors: Katsuhiko Okitsu, Toshihiro Amei, Kenji Hatano, Yoshitaka Kimura
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Patent number: 8437151Abstract: There is provided a self-excited switching power supply circuit which shifts to continuous oscillating operation immediately after the self-excited switching power supply circuit is connected to an AC power supply and started and which does not cause start-up failure while using a start-up resistor of a high resistance value to maintain standby power consumption at a low level. A bypass charging circuit connected in series to a start-up resistor is connected between a high-voltage side terminal of a DC input power supply and the gate of an oscillation field effect transistor. A charging current flowing in the start-up resistor, and additionally, a charging current to charge a start-up capacitor through the bypass charging circuit flow in a transitional period during which the voltage of the DC input power supply increases.Type: GrantFiled: March 7, 2012Date of Patent: May 7, 2013Assignee: SMK CorporationInventors: Katsuhiko Okitsu, Toshihiro Amei, Kenji Hatano
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Publication number: 20120230061Abstract: There is provided a self-excited switching power supply circuit which shifts to continuous oscillating operation immediately after the self-excited switching power supply circuit is connected to an AC power supply and started and which does not cause start-up failure while using a start-up resistor of a high resistance value to maintain standby power consumption at a low level. A bypass charging circuit connected in series to a start-up resistor is connected between a high-voltage side terminal of a DC input power supply and the gate of an oscillation field effect transistor. A charging current flowing in the start-up resistor, and additionally, a charging current to charge a start-up capacitor through the bypass charging circuit flow in a transitional period during which the voltage of the DC input power supply increases.Type: ApplicationFiled: March 7, 2012Publication date: September 13, 2012Applicants: SMK CORPORATION, CANON DENSHI KABUSHIKI KAISHAInventors: Katsuhiko OKITSU, Toshihiro AMEI, Kenji HATANO
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Publication number: 20120230063Abstract: There is provided a self-excited switching power supply circuit. A cycle control capacitor is charged with a flyback voltage generated in a feedback winding of a transformer during OFF operation period in which an exciting current does not flow in a primary winding of the transformer. An OFF control capacitor the charging speed of which changes ON operation period is charged with the charging voltage of the cycle control capacitor during the ON operation period in which an exciting current flows in the primary winding. The charging voltage of the cycle control capacitor is changed with a periodic cycle Tc sufficiently longer than an oscillation cycle To to make the oscillation cycle To of continuous oscillating operation variable based on the periodic cycle Tc. As a result, the frequency of a harmonic is distributed.Type: ApplicationFiled: March 7, 2012Publication date: September 13, 2012Applicants: SMK CORPORATION, CANON DENSHI KABUSHIKI KAISHAInventors: Katsuhiko OKITSU, Toshihiro AMEI, Kenji HATANO, Yoshitaka KIMURA
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Patent number: 8085448Abstract: An image reading apparatus capable of continually conveying a plurality of originals in a stable manner while cleaning a contact glass of an image sensor and reducing streaks occurring in read images. An image sensor reads an original image via a contact member which the conveyed original may contact. A cleaning member, being provided on a turning member which is able to rotate or swing and disposed at a position opposing the image sensor, cleans the contact member's surface which the original may contact. The turning member is turned by a driving unit. A controlling unit controls the driving unit to turn the turning member so that cleaning of the contact member is performed by the cleaning member after the original has passed an image reading position of the image sensor and before a subsequent original reaches the image reading position.Type: GrantFiled: March 27, 2008Date of Patent: December 27, 2011Assignee: Canon Denshi Kabushiki KaishaInventors: Shinobu Kato, Katsuhiko Okitsu, Hirokazu Higuchi
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Patent number: 7796310Abstract: An image reading apparatus capable of increasing the detection accuracy of the size of an original and eliminating the need for an image sensor dedicated to detection of the size of an original. A first reading unit has a first light source disposed on one side of a conveyance path of an original for emitting light to one surface of the original. A second reading unit has a second light source disposed on the other side of the conveyance path for emitting light to be received by the first reading unit, an optical opening for causing the light emitted from the second light source and subsequently received by the first reading unit to pass therethrough toward the first reading unit. The original is detected on the basis of the resultant output of the first reading unit upon receipt of the light emitted from the second light source.Type: GrantFiled: October 28, 2008Date of Patent: September 14, 2010Assignee: Canon Denshi Kabushiki KaishaInventors: Yoji Hasegawa, Minoru Sashida, Katsuhiko Okitsu
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Publication number: 20090109500Abstract: An image reading apparatus capable of increasing the detection accuracy of the size of an original and eliminating the need for an image sensor dedicated to detection of the size of an original. A first reading unit has a first light source disposed on one side of a conveyance path of an original for emitting light to one surface of the original. A second reading unit has a second light source disposed on the other side of the conveyance path for emitting light to be received by the first reading unit, an optical opening for causing the light emitted from the second light source and subsequently received by the first reading unit to pass therethrough toward the first reading unit. The original is detected on the basis of the resultant output of the first reading unit upon receipt of the light emitted from the second light source.Type: ApplicationFiled: October 28, 2008Publication date: April 30, 2009Applicant: CANON DENSHI KABUSHIKI KAISHAInventors: Yoji Hasegawa, Minoru Sashida, Katsuhiko Okitsu
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Publication number: 20080239416Abstract: An image reading apparatus capable of continually conveying a plurality of originals in a stable manner while cleaning a contact glass of an image sensor and reducing streaks occurring in read images. An image sensor reads an original image via a contact member which the conveyed original may contact. A cleaning member, being provided on a turning member which is able to rotate or swing and disposed at a position opposing the image sensor, cleans the contact member's surface which the original may contact. The turning member is turned by a driving unit. A controlling unit controls the driving unit to turn the turning member so that cleaning of the contact member is performed by the cleaning member after the original has passed an image reading position of the image sensor and before a subsequent original reaches the image reading position.Type: ApplicationFiled: March 27, 2008Publication date: October 2, 2008Applicant: CANON DENSHI KABUSHIKI KAISHAInventors: Shinobu Kato, Katsuhiko Okitsu, Hirokazu Higuchi
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Patent number: 7130245Abstract: A double feed detecting apparatus provided with an ultrasonic transmitter installed on one side of a transport path for a sheet material for transmitting an ultrasonic toward the sheet material, an ultrasonic receiver installed on the other side of the transport path for the sheet material for receiving the ultrasonic transmitted by the ultrasonic transmitter and outputting a received ultrasonic signal, a first determining device for determining whether double feed or not in accordance with the amplitude of the received ultrasonic signal output by the ultrasonic receiver, and a second determining device for detecting a phase change in the received ultrasonic signal, and determining whether double feed or not on the basis of the detected phase change.Type: GrantFiled: January 23, 2004Date of Patent: October 31, 2006Assignee: Canon Denshi Kabushiki KaishaInventors: Katsuhiko Okitsu, Tomoya Shimazaki
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Publication number: 20040150155Abstract: A double feed detecting apparatus provided with an ultrasonic transmitter installed on one side of a transport path for a sheet material for transmitting an ultrasonic toward the sheet material, an ultrasonic receiver installed on the other side of the transport path for the sheet material for receiving the ultrasonic transmitted by the ultrasonic transmitter and outputting a received ultrasonic signal, a first determining device for determining whether double feed or not in accordance with the amplitude of the received ultrasonic signal output by the ultrasonic receiver, and a second determining device for detecting a phase change in the received ultrasonic signal, and determining whether double feed or not on the basis of the detected phase change.Type: ApplicationFiled: January 23, 2004Publication date: August 5, 2004Applicant: CANON DENSHI KABUSHIKI KAISHAInventors: Katsuhiko Okitsu, Tomoya Shimazaki
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Patent number: 6636713Abstract: This invention has as its object to provide a highly reliable image reading apparatus in which both an image reading unit and photographing unit can obtain optimal images. To achieve this object, the apparatus has a light-emitting element array which illuminates a document to be read by a read sensor, and an illumination lamp which illuminates the document to be recorded by the photographing unit.Type: GrantFiled: October 4, 2001Date of Patent: October 21, 2003Assignee: Canon Denshi Kabushiki KaishaInventors: Katsuhiko Okitsu, Hiroshi Komuro
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Patent number: 6587658Abstract: This invention has as its object to provide a highly reliable image reading apparatus in which both an image reading unit and photographing unit can obtain optimal images. To achieve this object, the apparatus has a light-emitting element array which illuminates a document to be read by a read sensor, and an illumination lamp which illuminates the document to be recorded by the photographing unit.Type: GrantFiled: August 14, 2002Date of Patent: July 1, 2003Assignee: Canon Denshi Kabushiki KaishaInventors: Katsuhiko Okitsu, Hiroshi Komuro
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Publication number: 20020191984Abstract: This invention has as its object to provide a highly reliable image reading apparatus in which both an image reading unit and photographing unit can obtain optimal images. To achieve this object, the apparatus has a light-emitting element array which illuminates a document to be read by a read sensor, and an illumination lamp which illuminates the document to be recorded by the photographing unit.Type: ApplicationFiled: August 14, 2002Publication date: December 19, 2002Inventors: Katsuhiko Okitsu, Hiroshi Komuro
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Publication number: 20020044793Abstract: This invention has as its object to provide a highly reliable image reading apparatus in which both an image reading unit and photographing unit can obtain optimal images. To achieve this object, the apparatus has a light-emitting element array which illuminates a document to be read by a read sensor, and an illumination lamp which illuminates the document to be recorded by the photographing unit.Type: ApplicationFiled: October 4, 2001Publication date: April 18, 2002Inventors: Katsuhiko Okitsu, Hiroshi Komuro
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Patent number: 6315284Abstract: A sheet feeding apparatus has a pair of feeding roller and separating roller an inter-shaft distance changing mechanism for the pair of rollers, and sheet detecting means, and a sheet fed is rammed against the surface on which the feeding roller and the separating roller overlap each other to thereby correct skew feeding, and the feeding roller and the separating roller are moved away from each other to thereby feed the sheet. When the passage of the fed sheet between the feeding roller and the separating roller is detected the feeding roller and the separating roller assume a state in which sheet feeding is impossible. By the above-described operation being performed for each sheet, the correction of skew feeding and the separation of a sheet are effected by the feeding roller and the separating roller.Type: GrantFiled: October 16, 2000Date of Patent: November 13, 2001Assignee: Canon Denshi Kabushiki KaishaInventors: Hiroshi Komuro, Kazuhide Sugiyama, Minoru Sashida, Katsuhiko Okitsu
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Patent number: 6234470Abstract: A feeding rotatable member, a conveying rotatable member and a separating rotatable member are driven by a sheet feeding motor, a feeding motor and a separating motor, respectively, which are independent driving means to thereby feed an original. The separation and conveyance of the original are effected while the opening amount between the conveying rotatable member and the separating rotatable member is changed by a sheet thickness adjusting motor.Type: GrantFiled: March 11, 1999Date of Patent: May 22, 2001Assignee: Canon Denshi Kabushiki KaishaInventors: Katsuhiko Okitsu, Masashi Shimamura
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Patent number: 6168146Abstract: A sheet feeding apparatus has a pair of feeding roller and separating roller an inter-shaft distance changing mechanism for the pair of rollers, and sheet detecting means, and a sheet fed is rammed against the surface on which the feeding roller and the separating roller overlap each other to thereby correct skew feeding, and the feeding roller and the separating roller are moved away from each other to thereby feed the sheet. When the passage of the fed sheet between the feeding roller and the separating roller is detected the feeding roller and the separating roller assume a state in which sheet feeding is impossible. By the above-described operation being performed for each sheet, the correction of skew feeding and the separation of a sheet are effected by the feeding roller and the separating roller.Type: GrantFiled: March 15, 1999Date of Patent: January 2, 2001Assignee: Canon Denshi Kabushiki KaishaInventors: Hiroshi Komuro, Kazuhide Sugiyama, Minoru Sashida, Katsuhiko Okitsu
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Patent number: 5642181Abstract: An image exposure apparatus switchable between a reader state for projecting an image on a screen for observation and a scan state for scanning exposure of the image, which includes plural scanning mirrors which integrally move on a same line to effect the image scanning. The mutual distance of the plural scanning mirrors is varied at the switching between the reader state and the scan state.Type: GrantFiled: February 14, 1995Date of Patent: June 24, 1997Assignee: Canon Kabushiki KaishaInventors: Toshiya Matsumoto, Yukuo Yamaguchi, Katsuhiko Okitsu, Taketo Ochiai