Patents by Inventor Satohisa Tateishi
Satohisa Tateishi 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: 10906760Abstract: A sheet feeding apparatus includes a sheet stacking portion on which a sheet is stacked, and a one-way clutch configured such that (i) in delivering the sheet stacked on the sheet stacking portion toward a separation nip, rotation of a drive shaft in a first rotational direction is transmitted through the one-way clutch, a drive gear and a gear train rotate a pick-up roller without slipping of the one-way clutch, and (ii) after a leading edge of the sheet has reached the separation nip, the pick-up roller is dragged and rotated by the sheet conveyed by a feed roller, rotation of the pick-up roller is transmitted through the gear train to the drive gear, and the drive gear is rotated in the first rotational direction with respect to the drive shaft that is rotated in the first rotational direction while the one-way clutch is slipping.Type: GrantFiled: October 22, 2018Date of Patent: February 2, 2021Assignee: CANON KABUSHIKI KAISHAInventor: Satohisa Tateishi
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Publication number: 20190144219Abstract: A sheet feeding apparatus includes a rotary pick-up member, a rotary feed member and a separation member. A holding member holds the rotary pick-up member rotatably and is configured to swing on a swing axis positioned upstream from a rotation axis of the rotary pick-up member in a sheet feeding direction. A rotary driving member is on the swing axis of the holding member. A drive transmission portion is supported by the holding member and is configured to transmit (i) rotation of the rotary driving member to the rotary pick-up member in delivering the sheet from a sheet stacking portion toward a separation portion and (ii) rotation of the rotary pick-up member rotated by the sheet to the rotary driving member in conveying the sheet by the rotary feed member after a leading edge of the sheet in the sheet feeding direction has reached the separation portion.Type: ApplicationFiled: October 22, 2018Publication date: May 16, 2019Inventor: Satohisa Tateishi
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Patent number: 10160611Abstract: Let a point at which a lock member and a leading end positioning member abut against each other when a roller holding member is located at a feeding retracted position be represented by a contact point. A tangential direction of a surface of the leading end positioning member at the contact point is substantially parallel to a direction in which the roller holding member moves to a feeding position from a feeding retracted position.Type: GrantFiled: June 30, 2016Date of Patent: December 25, 2018Assignee: Canon Kabushiki KaishaInventor: Satohisa Tateishi
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Patent number: 10059540Abstract: A sheet feeding apparatus includes a tray swingably supported by an apparatus body through a link. A link support portion disposed in the apparatus body is engaged with a first end portion of the link. The link support portion includes first and second support parts respectively corresponding to first and second positions of the tray. The link support portion further includes a guide part along which the first end portion of the link moves between the first and second support parts. The guide part has a bent part between the first and second support parts so that a guiding direction in which the first end portion is guided from the first support part toward the bent part differs from a load direction in which the first end portion of the link applies load on the first support part in a case where the tray is positioned at the first position.Type: GrantFiled: August 1, 2016Date of Patent: August 28, 2018Assignee: CANON KABUSHIKI KAISHAInventor: Satohisa Tateishi
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Publication number: 20170050811Abstract: A sheet feeding apparatus includes a tray swingably supported by an apparatus body through a link. A link support portion disposed in the apparatus body is engaged with a first end portion of the link. The link support portion includes first and second support parts respectively corresponding to first and second positions of the tray. The link support portion further includes a guide part along which the first end portion of the link moves between the first and second support parts. The guide part has a bent part between the first and second support parts so that a guiding direction in which the first end portion is guided from the first support part toward the bent part differs from a load direction in which the first end portion of the link applies load on the first support part in a case where the tray is positioned at the first position.Type: ApplicationFiled: August 1, 2016Publication date: February 23, 2017Inventor: Satohisa Tateishi
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Publication number: 20170008712Abstract: Let a point at which a lock member and a leading end positioning member abut against each other when a roller holding member is located at a feeding retracted position be represented by a contact point. A tangential direction of a surface of the leading end positioning member at the contact point is substantially parallel to a direction in which the roller holding member moves to a feeding position from a feeding retracted position.Type: ApplicationFiled: June 30, 2016Publication date: January 12, 2017Inventor: Satohisa Tateishi
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Patent number: 9272861Abstract: A sheet feeding unit includes a supporting member configured to rotatably support a rotary feeding member, a first retaining member configured to push the supporting member upward from the underside to retain the rotary feeding member at a waiting position, and a second retaining member protruding on the underside of the supporting member when the first retaining member retains the supporting member. The retention of the supporting member by the first retaining member is released in association with the mounting of a sheet storage portion in the mounting position, and then the retention of the supporting member by the second retaining member is released.Type: GrantFiled: September 17, 2014Date of Patent: March 1, 2016Assignee: Canon Kabushiki KaishaInventors: Satohisa Tateishi, Kozo Inoue
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Patent number: 9272862Abstract: When a sheet is determined to arrive at a registration roller, a motor is temporarily stopped and then, is rotated so as to return a cam to an initial position. When the motor is rotated, in a case where a relation between a rotation angle ? of the cam at the time of stopping the motor and a rotation angle ? of the cam according to the rotation of the motor in a time required for the motor until acceleration up to constant-speed rotation from a stopped state of the motor and until deceleration from the constant-speed rotation and stop after the deceleration is “?<360??”, the motor is rotated at a first speed by controlling acceleration/deceleration of the motor and, in a case where the relation is “?>360??”, the motor is rotated at a constant second speed lower than the first speed.Type: GrantFiled: February 6, 2015Date of Patent: March 1, 2016Assignee: Canon Kabushiki KaishaInventor: Satohisa Tateishi
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Publication number: 20150251863Abstract: When a sheet is determined to arrive at a registration roller, a motor is temporarily stopped and then, is rotated so as to return a cam to an initial position. When the motor is rotated, in a case where a relation between a rotation angle ? of the cam at the time of stopping the motor and a rotation angle ? of the cam according to the rotation of the motor in a time required for the motor until acceleration up to constant-speed rotation from a stopped state of the motor and until deceleration from the constant-speed rotation and stop after the deceleration is “?<360??”, the motor is rotated at a first speed by controlling acceleration/deceleration of the motor and, in a case where the relation is “?>360??”, the motor is rotated at a constant second speed lower than the first speed.Type: ApplicationFiled: February 6, 2015Publication date: September 10, 2015Inventor: Satohisa Tateishi
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Publication number: 20150084269Abstract: A sheet feeding unit includes a supporting member configured to rotatably support a rotary feeding member, a first retaining member configured to push the supporting member upward from the underside to retain the rotary feeding member at a waiting position, and a second retaining member protruding on the underside of the supporting member when the first retaining member retains the supporting member. The retention of the supporting member by the first retaining member is released in association with the mounting of a sheet storage portion in the mounting position, and then the retention of the supporting member by the second retaining member is released.Type: ApplicationFiled: September 17, 2014Publication date: March 26, 2015Inventors: Satohisa Tateishi, Kozo Inoue
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Patent number: 7798491Abstract: A registration unit includes a skew correction roller pair configured to rotate a sheet conveyed from a conveyance roller pair and to correct skew of the sheet. The registration unit sheet further includes a projectable swinging guide arranged between the conveyance roller pair and the skew correction roller pair to deflect the sheet. The skew correction roller pair corrects the skew of the sheet deflected by the swinging guide.Type: GrantFiled: August 7, 2007Date of Patent: September 21, 2010Assignee: Canon Kabushiki KaishaInventors: Junichi Moteki, Takashi Fujita, Hiroaki Takagishi, Nobuto Kamiyama, Seiichiro Kameda, Youichi Chikugo, Satohisa Tateishi, Kozo Inoue
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Patent number: 7748697Abstract: A sheet feeding apparatus according to an aspect of the invention includes conveying suction belts which have a function of rotating an adsorbed sheet and a function of conveying the sheet; a suction fan 112 which adsorbs the sheet to the belts; CCDs which detect a position and an skew in a direction orthogonal to a sheet conveying direction while the sheet is adsorbed to the belts; and a control device for driving the belts to rotate the sheet according to signals of CCDs in order to correct an attitude of the sheet adsorbed to the belts.Type: GrantFiled: November 7, 2007Date of Patent: July 6, 2010Assignee: Canon Kabushiki KaishaInventors: Takashi Fujita, Hiroaki Takagishi, Nobuto Kamiyama, Kozo Inoue, Seiichiro Kameda, Junichi Moteki, Satohisa Tateishi, Youichi Chikugo
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Patent number: 7697884Abstract: The sheet conveying apparatus includes a first curl forming part provided downstream of a fixing part for fixing a toner image to a sheet, for curling the sheet; a second curl forming part provided downstream of the first curl forming part, for curling the sheet in a direction opposite to a direction in which the sheet is curled in the first curl forming part, in which a curling amount of the sheet in the second curl forming part is set to be smaller than that in the first curl forming part, and the curling amount of the sheet in the second curl forming part is variable according to rigidity of the sheet. Thus, a shape of the curled sheet can be reliably reformed with a simple structure.Type: GrantFiled: November 9, 2006Date of Patent: April 13, 2010Assignee: Canon Kabushiki KaishaInventor: Satohisa Tateishi
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Patent number: 7549629Abstract: An air heating mechanism for heating the air which is blown from a loosening/separating nozzle toward the top sheet attracted to an attracting and conveying unit is provided. A control unit controls the air heating mechanism based on moisture content information from a sensor for detecting a moisture content of a sheet supported by the tray.Type: GrantFiled: May 10, 2007Date of Patent: June 23, 2009Assignee: Canon Kabushiki KaishaInventors: Satohisa Tateishi, Junichi Moteki, Youichi Chikugo, Seiichiro Kameda, Kozo Inoue, Takashi Fujita, Hiroaki Takagishi, Nobuto Kamiyama
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Publication number: 20080111297Abstract: A sheet feeding apparatus according to an aspect of the invention includes conveying suction belts which have a function of rotating an adsorbed sheet and a function of conveying the sheet; a suction fan 112 which adsorbs the sheet to the belts; CCDs which detect a position and an skew in a direction orthogonal to a sheet conveying direction while the sheet is adsorbed to the belts; and a control device for driving the belts to rotate the sheet according to signals of CCDs in order to correct an attitude of the sheet adsorbed to the belts.Type: ApplicationFiled: November 7, 2007Publication date: May 15, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Fujita, Hiroaki Takagishi, Nobuto Kamiyama, Kozo Inoue, Seiichiro Kameda, Junichi Moteki, Satohisa Tateishi, Youichi Chikugo
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Publication number: 20080036137Abstract: A registration unit includes a skew correction roller pair configured to rotate a sheet conveyed from a conveyance roller pair and to correct skew of the sheet. The registration unit sheet further includes a projectable swinging guide arranged between the conveyance roller pair and the skew correction roller pair to deflect the sheet. The skew correction roller pair corrects the skew of the sheet deflected by the swinging guide.Type: ApplicationFiled: August 7, 2007Publication date: February 14, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Junichi Moteki, Takashi Fujita, Hiroaki Takagishi, Nobuto Kamiyama, Seiichiro Kameda, Youichi Chikugo, Satohisa Tateishi, Kozo Inoue
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Publication number: 20070267803Abstract: An air heating mechanism for heating the air which is blown from a loosening/separating nozzle toward the top sheet attracted to an attracting and conveying unit is provided. A control unit controls the air heating mechanism based on moisture content information from a sensor for detecting a moisture content of a sheet supported by the tray.Type: ApplicationFiled: May 10, 2007Publication date: November 22, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Satohisa Tateishi, Junichi Moteki, Youichi Chikugo, Seiichiro Kameda, Kozo Inoue, Takashi Fujita, Hiroaki Takagishi, Nobuto Kamiyama
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Publication number: 20070110490Abstract: The sheet conveying apparatus includes a first curl forming part provided downstream of a fixing part for fixing a toner image to a sheet, for curling the sheet; a second curl forming part provided downstream of the first curl forming part, for curling the sheet in a direction opposite to a direction in which the sheet is curled in the first curl forming part, in which a curling amount of the sheet in the second curl forming part is set to be smaller than that in the first curl forming part, and the curling amount of the sheet in the second curl forming part is variable according to rigidity of the sheet. Thus, a shape of the curled sheet can be reliably reformed with a simple structure.Type: ApplicationFiled: November 9, 2006Publication date: May 17, 2007Applicant: CANON KABUSHIKI KAISHAInventor: Satohisa TATEISHI