Patents by Inventor Yasunori Miyauchi
Yasunori Miyauchi 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: 8231123Abstract: An arrangement is provided such that a pad pressing means for pressing a separation pad against a pick roller is formed in a reverse U-shape, and a pressing spring for pressing the pad pressing means to press the separation pad against the pick roller is provided on a central portion of the pad pressing means. The pad pressing means is structured so as to have a rotating fulcrum to be rotatable back and forth with respect to a rotating direction of the pick roller about a connecting portion of the pad pressing means for connection to the pressing spring. To ensure that a large load will not be applied to the entire pad pressing means when thick paper or the like is fed, a rotating arm may be provided so that the entire pressing means including the pad pressing means is rotatable about a predetermined position set at the rotating fulcrum which is the connecting portion for connection to the pressing spring.Type: GrantFiled: August 31, 2005Date of Patent: July 31, 2012Assignee: PFU LimitedInventors: Yoshiki Tsuchiyama, Satoshi Ishida, Yasunori Miyauchi, Shuuichi Morikawa
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Patent number: 7327499Abstract: An image reading apparatus includes a lens unit (4) which has a low-resolution lens (1), a high-resolution lens (2), and a first driving unit (3) for driving them, and a second driving unit (5) for driving the lens unit (4). At a first resolution, the low-resolution lens (1) is placed on the optical axis at a first location and the high-resolution lens (2) is placed off the optical axis. At a second resolution higher than the first resolution, the low-resolution lens (1) is placed off the optical axis and the high-resolution lens (2) is placed on the optical axis at a second location. At a third resolution higher than the second resolution, the low-resolution lens (1) is placed off the optical axis and the high-resolution lens (2) is placed on the optical axis at a third location.Type: GrantFiled: October 10, 2002Date of Patent: February 5, 2008Assignee: PFU LimitedInventors: Masashi Matsumoto, Minoru Masuda, Yasunori Miyauchi
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Publication number: 20070114712Abstract: An arrangement is provided such that a pad pressing means for pressing a separation pad against a pick roller is formed in a reverse U-shape, and a pressing spring for pressing the pad pressing means to press the separation pad against the pick roller is provided on a central portion of the pad pressing means. The pad pressing means is structured so as to have a rotating fulcrum to be rotatable back and forth with respect to a rotating direction of the pick roller about a connecting portion of the pad pressing means for connection to the pressing spring. To ensure that a large load will not be applied to the entire pad pressing means when thick paper or the like is fed, a rotating arm may be provided so that the entire pressing means including the pad pressing means is rotatable about a predetermined position set at the rotating fulcrum which is the connecting portion for connection to the pressing spring.Type: ApplicationFiled: August 31, 2005Publication date: May 24, 2007Inventors: Yoshiki Tsuchiyama, Satoshi Ishida, Yasunori Miyauchi, Shuuichi Morikawa
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Patent number: 6924946Abstract: The present invention is directed to a lens diaphragm device that can avoid a degradation of an image due to both diffraction of a light beam and flares. The diaphragm device includes two diaphragm vanes (2 and 4) that respectively have notches (28 and 36) opposed to each other in a single plane perpendicular to an optical axis (O), and two of the vanes are moved close to and apart from each other in the single plane so as to vary an aperture of the lens diaphragm. The lens diaphragm device also includes two optical filters (6 and 8) used to reduce a quantity of a beam of light passing through the diaphragm, and an aperture of the diaphragm defined by edges of the optical filters and the notches of the vanes is shaped to be asymmetrical about straight line which crosses the optical axis and is perpendicular to directions of the motion of the vanes.Type: GrantFiled: May 22, 2003Date of Patent: August 2, 2005Assignee: Tamron Co., Ltd.Inventors: Yuko Watanabe, Michio Inoue, Yasunori Miyauchi
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Publication number: 20040165286Abstract: An image reading apparatus includes a lens unit (4) which has a low-resolution lens (1), a high-resolution lens (2), and a first driving unit (3) for driving them, and a second driving unit (5) for driving the lens unit (4). At a first resolution, the low-resolution lens (1) is placed on the optical axis at a first location and the high-resolution lens (2) is placed off the optical axis. At a second resolution higher than the first resolution, the low-resolution lens (1) is placed off the optical axis and the high-resolution lens (2) is placed on the optical axis at a second location. At a third resolution higher than the second resolution, the low-resolution lens (1) is placed off the optical axis and the high-resolution lens (2) is placed on the optical axis at a third location.Type: ApplicationFiled: December 23, 2003Publication date: August 26, 2004Inventors: Masashi Matsumoto, Minoru Masuda, Yasunori Miyauchi
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Publication number: 20030223128Abstract: The present invention is directed to a lens diaphragm device that can avoid a degradation of an image due to both diffraction of a light beam and flares. The diaphragm device includes two diaphragm vanes (2 and 4) that respectively have notches (28 and 36) opposed to each other in a single plane perpendicular to an optical axis (O), and two of the vanes are moved close to and apart from each other in the single plane so as to vary an aperture of the lens diaphragm. The lens diaphragm device also includes two optical filters (6 and 8) used to reduce a quantity of a beam of light passing through the diaphragm, and an aperture of the diaphragm defined by edges of the optical filters and the notches of the vanes is shaped to be asymmetrical about straight line which crosses the optical axis and is perpendicular to directions of the motion of the vanes.Type: ApplicationFiled: May 22, 2003Publication date: December 4, 2003Inventors: Yuko Watanabe, Michio Inoue, Yasunori Miyauchi
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Patent number: 6628431Abstract: An image reader is composed of a read unit 2 provided with a contact member 21 which abuts an original bed 11 of a flat bed unit 1; and a pressing element 30 for causing the read unit 2 and the original bed 11 to press against each other. Also, the image reader is composed of an apparatus body 50 including a read unit 102 and an original bed 51; and an original cover 42 including a light source 43 and a diffusion plate 45 and attached to the apparatus body 50 in such a manner as to be freely opened and closed. The distance between a translucent original 41 placed on the original bed 51 and the light source 43 is variable according to the thickness of the translucent original 41.Type: GrantFiled: March 10, 1999Date of Patent: September 30, 2003Assignee: PFU LimitedInventors: Minoru Masuda, Masashi Matsumoto, Tomohiro Sunasaki, Yasunori Miyauchi
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Patent number: 6424433Abstract: An original reader such as an image scanner for inputting image information, provided with a optical source for illuminating an original, a lens unit (8) capable of optically changing resolution, and a solid-state image sensor substrate placed on an image forming plane (10) of the lens, wherein the lens unit (8) includes a plurality of lenses that can deal with a plurality of different resolution and one lens corresponding to a specified resolution is selectively moved into a light path. The lens unit and the solid-state image sensor substrate are independently movable in the direction of optical axis for focusing.Type: GrantFiled: February 19, 1999Date of Patent: July 23, 2002Assignee: PFU LimitedInventors: Yasunori Miyauchi, Minoru Masuda
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Patent number: 5628575Abstract: An automatic paper feeder of a document input device includes a pick roller 20, separator pads 68 that come into contact with the pick roller 20, a first pair of pick springs 58, and a second pick spring 60. The first pick springs 58 are disposed on the upstream side of the second pick spring 60 in the direction of conveying the paper. The first pick springs 58 are disposed on the regions on both outer sides of the width of the separator pads 68 in the axial direction of the roller, and the second pick spring 60 is disposed at a central position in the width of the separator pad 68. The first and second pick springs 58 and 60 are integrally formed as a spring unit using a single metal plate, and a force of contact of the first pick springs 58 upon the pick roller 20 on the upstream side is smaller than a force of contact of the second pick spring 60 upon the pick roller 20 on the downstream side. The separator pad 68 is formed by branching a web 70 of a rubber sheet into fork-like pad units.Type: GrantFiled: April 15, 1996Date of Patent: May 13, 1997Assignees: Fujitsu Ltd., PFU Ltd.Inventors: Shuichi Morikawa, Masahiko Futatsuka, Satoshi Ishida, Yasunori Miyauchi, Minoru Masuda
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Patent number: 5624197Abstract: An automatic paper feeder of a document input device includes a pick roller 20, separator pads 68 that come into contact with the pick roller 20, a first pair of pick springs 58, and a second pick spring 60. The first pick springs 58 are disposed on the upstream side of the second pick spring 60 in the direction of conveying the paper. The first pick springs 58 are disposed on the regions on both outer sides of the width of the separator pads 68 in the axial direction of the roller, and the second pick spring 60 is disposed at a central position in the width of the separator pad 68. The first and second pick springs 58 and 60 are integrally formed as a spring unit using a single metal plate, and a force of contact of the first pick springs 58 upon the pick roller 20 on the upstream side is smaller than a force of contact of the second pick spring 60 upon the pick roller 20 on the downstream side. The separator pad 68 is formed by branching a web 70 of a rubber sheet into fork-like pad units.Type: GrantFiled: April 15, 1996Date of Patent: April 29, 1997Assignees: PFU Limited, Fujitsu LimitedInventors: Shuichi Morikawa, Masahiko Futatsuka, Satoshi Ishida, Yasunori Miyauchi, Minoru Masuda
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Patent number: 5606430Abstract: An image apparatus is provided with a bottom take-out type automatic paper feeding mechanism. Documents are sequentially taken out from a lowermost document by coaction of a paper feeding roller and a document separation pad which is elastically pressed against the paper feeding roller. A hopper is provided on which the documents are placed by stacking. Projections are provided on a document placement surface of the hopper or a paper feeding passage. The projections prevent the documents from being adhered to the hopper which has been electrostatically charged.Type: GrantFiled: June 5, 1995Date of Patent: February 25, 1997Assignees: Fujitsu Limited, PFU LimitedInventors: Shuichi Morikawa, Masahiko Futatsuka, Satoshi Ishida, Yasunori Miyauchi, Minoru Masuda, Makoto Takagawa
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Patent number: 5573338Abstract: An automatic paper feeder of a document input device includes a pick roller 20, separator pads 68 that come into contact with the pick roller 20, a first pair of pick springs 58, and a second pick spring 60. The first pick springs 58 are disposed on the upstream side of the second pick spring 60 in the direction of conveying the paper. The first pick springs 58 are disposed on the regions on both outer sides of the width of the separator pads 68 in the axial direction of the roller, and the second pick spring 60 is disposed at a central position in the width of the separator pad 68. The first and second pick springs 58 and 60 are integrally formed as a spring unit using a single metal plate, and a force of contact of the first pick springs 58 upon the pick roller 20 on the upstream side is smaller than a force of contact of the second pick spring 60 upon the pick roller 20 on the downstream side. The separator pad 68 is formed by branching a web 70 of a rubber sheet into fork-like pad units.Type: GrantFiled: August 24, 1995Date of Patent: November 12, 1996Assignees: PFU Limited, Fujitsu LimitedInventors: Shuichi Morikawa, Masahiko Futatsuka, Satoshi Ishida, Yasunori Miyauchi, Minoru Masuda
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Patent number: 5537219Abstract: An image reading apparatus is provided with white reference sheets. The image reading image apparatus is movable between a first reading position at which an optical reading unit reads image information on a document supplied by an automatic paper feeding mechanism and a second reading position. The image reading apparatus regulates an absolute white level with respect to a light source.Type: GrantFiled: June 5, 1995Date of Patent: July 16, 1996Assignees: PFU Limited, Fujitsu LimitedInventors: Shuichi Morikawa, Masahiko Futatsuka, Satoshi Ishida, Yasunori Miyauchi, Minoru Masuda, Makoto Takagawa
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Patent number: 5537225Abstract: An image reading apparatus has a reading unit including a light source lamp mounted on a unit frame arranged in a document reading portion. The image reading apparatus comprised as a lamp frame supporting the light source lamp. The lamp frame has a pin. Projections are pivotally arranged on a back side surface of the lamp frame at an interval in a longitudinal direction of the light source lamp. An upper end of the projections has a grip for grasping. One of the projections has an elongated hole for receiving the pin. The pin regulates an pivoting angle of the projection. Slit holes, in which the projections are fitted, are formed in the unit frame.Type: GrantFiled: June 5, 1995Date of Patent: July 16, 1996Assignees: PFU Limited, Fujitsu LimitedInventors: Shuichi Morikawa, Masahiko Futatsuka, Satoshi Ishida, Yasunori Miyauchi, Minoru Masuda, Makoto Takagawa
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Patent number: 5510909Abstract: A paper feed roller (5) is divided into a first roller (5a) and a second roller (5b); a slit (58) through which about 10 to 20 sheets of documents can pass is formed between the first roller and a gate plate (57) opposite to this; and the paper fed out therefrom is fed out to a space between the second roller (5b) and a separation pad (7) in contact with this.Also, there is adopted a construction in which the pressing force of a paper conveyance spring is transformed by a slide cam sliding in a direction parallel to the paper feed roller; and the paper width detection sensor is assembled by a fitting construction.Type: GrantFiled: June 5, 1995Date of Patent: April 23, 1996Assignees: PFU Limited, Fujitsu LimitedInventors: Shuichi Morikawa, Masahiko Futatsuka, Satoshi Ishida, Yasunori Miyauchi, Minori Masuda, Makoto Takagawa
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Patent number: 5504587Abstract: A paper feed roller (5) is divided into a first roller (5a) and a second roller (5b); a slit (58) through which about 10 to 20 sheets of documents can pass is formed between the first roller and a gate plate (57) opposite to this; and the paper fed out therefrom is fed out to a space between the second roller (5b) and a separation pad (7) in contact with this.Also, there is adopted a construction in which the pressing force of a paper conveyance spring is transformed by a slide cam sliding in a direction parallel to the paper feed roller; and the paper width detection sensor is assembled by a fitting construction.Type: GrantFiled: June 5, 1995Date of Patent: April 2, 1996Assignees: PFU Limited, Fujitsu LimitedInventors: Shuichi Morikawa, Masahiko Futatsuka, Satoshi Ishida, Yasunori Miyauchi, Minoru Masuda, Makoto Takagawa
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Patent number: 5493417Abstract: A paper feed roller (5) is divided into a first roller (5a) and a second roller (5b); a slit (58) through which about 10 to 20 sheets of documents can pass is formed between the first roller and a gate plate (57) opposite to this; and the paper fed out therefrom is fed out to a space between the second roller (5b) and a separation pad (7) in contact with this.Also, there is adopted a construction in which the pressing force of a paper conveyance spring is transformed by a slide cam sliding in a direction parallel to the paper feed roller; and the paper width detection sensor is assembled by a fitting construction.Type: GrantFiled: June 5, 1995Date of Patent: February 20, 1996Assignees: PFU Limited, Fujitsu LimitedInventors: Shuichi Morikawa, Masahiko Futatsuka, Satoshi Ishida, Yasunori Miyauchi, Minoru Masuda, Makoto Takagawa
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Patent number: 5493422Abstract: A paper feed roller (5) is divided into a first roller (5a) and a second roller (5b); a slit (58) through which about 10 to 20 sheets of documents can pass is formed between the first roller and a gate plate (57) opposite to this; and the paper fed out therefrom is fed out to a space between the second roller (5b) and a separation pad (7) in contact with this.Also, there is adopted a construction in which the pressing force of a paper conveyance spring is transformed by a slide cam sliding in a direction parallel to the paper feed roller; and the paper width detection sensor is assembled by a fitting construction.Type: GrantFiled: June 5, 1995Date of Patent: February 20, 1996Assignees: PFU Limited, Fujitsu LimitedInventors: Shuichi Morikawa, Masahiko Futatsuka, Satoshi Ishida, Yasunori Miyauchi, Minoru Masuda, Makoto Takagawa
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Patent number: 5491567Abstract: A paper feed roller (5) is divided into a first roller (5a) and a second roller (5b); a slit (58) through which about 10 to 20 sheets of documents can pass is formed between the first roller and a gate plate (57) opposite to this; and the paper fed out therefrom is fed out to a space between the second roller (5b) and a separation pad (7) in contact with this.Also, there is adopted a construction in which the pressing force of a paper conveyance spring is transformed by a slide cam sliding in a direction parallel to the paper feed roller; and the paper width detection sensor is assembled by a fitting construction.Type: GrantFiled: June 5, 1995Date of Patent: February 13, 1996Assignees: PFU Limited, Fujitsu LimitedInventors: Shuichi Morikawa, Masahiko Futatsuka, Satoshi Ishida, Yasunori Miyauchi, Minoru Masuda, Makoto Takagawa
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Patent number: D371120Type: GrantFiled: June 16, 1995Date of Patent: June 25, 1996Assignee: PFU LimitedInventors: Taketo Kono, Kiichi Taniho, Yasunori Miyauchi