Patents Assigned to Seiko Precision Inc.
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Patent number: 8882370Abstract: A focal plane shutter includes: a board including an opening; a blade opening or closing the opening; an electromagnet including an iron core and a coil for energizing the iron core; and a drive lever holding an iron piece capable of being adsorbed to the iron core, capable of moving such that iron piece is moved into and away from the iron core, and driving the blade, wherein a plating process is performed on the iron core and the iron piece, a Vickers hardness of a plating of the iron piece is greater than that of a plating of the iron core, and a difference in the Vickers hardness between the plating of the iron piece and the plating of the iron core is 100 HV or more.Type: GrantFiled: February 7, 2014Date of Patent: November 11, 2014Assignee: Seiko Precision Inc.Inventors: Seiichi Oishi, Shoichi Tokura
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Publication number: 20140320737Abstract: A focal plane shutter includes: a board including an opening; a leading shutter and a trailing shutter opening and closing the opening; first and second biasing members respectively biasing the leading shutter and the trailing shutter to move away from the opening; a first actuator causing the leading shutter to move from a position to close the opening to a position to recede from the opening while the leading shutter is assisted by a biasing force of the first biasing member in an exposure operation; and a second actuator causing the trailing shutter to move from a position to recede from the opening to a position to close the opening against a biasing force of the second biasing member in the exposure operation, wherein drive torque of the first actuator is smaller than that of the second actuator.Type: ApplicationFiled: July 8, 2014Publication date: October 30, 2014Applicant: SEIKO PRECISION INC.Inventors: Hiroshi TAKAHASHI, Minori MURATA, Seiichi OISHI, Mitsuru SUZUKI
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Publication number: 20140300943Abstract: An aperture device includes: a board including an opening; a blade opening and closing the opening; and first and second receiving plates sandwiching the blade; wherein the first receiving plate includes a pressing portion partially pressing the blade toward the second plate.Type: ApplicationFiled: June 23, 2014Publication date: October 9, 2014Applicant: SEIKO PRECISION INC.Inventors: Katsuhisa GOKITA, Kazuya SHIODA, Kenichi KUDO
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Publication number: 20140286632Abstract: A focal plane shutter includes: a board including an opening; a blade opening or closing the opening; an electromagnet including an iron core and a coil for energizing the iron core; and a drive lever holding an iron piece capable of being adsorbed to the iron core, capable of moving such that iron piece is moved into and away from the iron core, and driving the blade, wherein a plating process is performed on the iron core and the iron piece, a Vickers hardness of a plating of the iron piece is greater than that of a plating of the iron core, and a difference in the Vickers hardness between the plating of the iron piece and the plating of the iron core is 100 HV or more.Type: ApplicationFiled: February 7, 2014Publication date: September 25, 2014Applicant: SEIKO PRECISION INC.Inventors: Seiichi OISHI, Shoichi TOKURA
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Patent number: 8840324Abstract: A blade drive device includes: a board including an opening; a blade movable between a position receding from the opening and a position covering at least a portion of the opening; a first actuator including a first rotor rotatable about a first axis and a first stator, and being capable of driving the blade; a second actuator including a second rotor rotatable about a second axis and a second stator, and being capable of driving the blade; first and second positioning portions respectively positioning the first and second actuators; and a first biasing member respectively biasing the first and second actuators toward the first and second positioning portions.Type: GrantFiled: September 11, 2013Date of Patent: September 23, 2014Assignee: Seiko Precision Inc.Inventor: Mitsuru Suzuki
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Publication number: 20140267853Abstract: An image pickup device includes: an image pickup element; a control portion sequentially resetting charge stored in the image pickup element for every pixel line in a predetermined direction such that an electronic leading blade moves in a simulated manner; and a focal plane shutter.Type: ApplicationFiled: March 6, 2014Publication date: September 18, 2014Applicant: SEIKO PRECISION INC.Inventor: Yoichi NAKANO
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Patent number: 8837030Abstract: A blade drive device includes: a board including an opening; a first blade movable toward and away from the opening, and including: a first slot; and first and second aperture openings each of which is smaller than the opening; a second blade movable toward and away from the opening and including a second slot; a first drive member including a first drive pin that engages the first slot and that is rotatable about a predetermined position; and a second drive member including a second drive pin that engages the second slot and that is rotatable about a predetermined position.Type: GrantFiled: September 14, 2012Date of Patent: September 16, 2014Assignee: Seiko Precision Inc.Inventor: Motoharu Sakurai
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Publication number: 20140248046Abstract: A focal plane shutter includes a board including an opening; a leading blade and a trailing blade opening and closing the opening; a trailing blade actuator driving the trailing blade; a drive member driving the trailing blade by receiving driving force of the trailing blade actuator; and a buffering member abutting with the drive member in a state where the trailing blade recedes away from the opening, wherein the trailing blade actuator causes the drive member to move away from the buffering member from an abutting state therewith and to abut therewith again in a charging operation, and then starts an exposure operation.Type: ApplicationFiled: May 14, 2014Publication date: September 4, 2014Applicant: SEIKO PRECISION INC.Inventors: Hiroshi TAKAHASHI, Minori MURATA, Seiichi OISHI, Mitsuru SUZUKI, Shoichi TOKURA
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Publication number: 20140247387Abstract: An image pickup device includes: a focal plane shutter including: a board including an opening; a leading shutter and a trailing shutter moving to open and close the opening; a leading-shutter actuator and a trailing-shutter actuator respectively causing the leading shutter and the trailing shutter to move; a leading-shutter sensor detecting that the leading shutter passes through a first position; and a trailing-shutter sensor detecting that the trailing shutter passes through a second position, an image pickup element that light enters through the opening; and a drive control portion.Type: ApplicationFiled: February 26, 2014Publication date: September 4, 2014Applicant: SEIKO PRECISION INC.Inventors: Yoichi NAKANO, Motoharu SAKURAI
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Patent number: 8807853Abstract: A focal plane shutter includes: a board including an opening; a leading blade and a trailing blade opening and closing the opening; first and second drive members respectively driving the leading blade and the trailing blade; first and second actuators respectively driving the first and second drive members; a first biasing member biasing the first drive member to move the leading blade away from the opening; and a second biasing member biasing the second drive member to move the trailing blade away from the opening.Type: GrantFiled: September 11, 2013Date of Patent: August 19, 2014Assignee: Seiko Precision Inc.Inventors: Hiroshi Takahashi, Minori Murata, Chiaki Nemoto, Shoichi Tokura
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Patent number: 8782756Abstract: A time clock 10, capable of outputting a datum to an USB memory 100 connected thereto, includes a controller authenticating whether or not the USB memory 100 is valid an external apparatus as an output destination to which the datum is output, and determining whether or not the datum is output on the basis of the authentication result. Further, the controller 25 authenticates an external apparatus on the basis of an authentication datum stored in the USB memory 100. The controller 25 performs the authentication on the basis of an identification datum of the time clock and an identification datum included in the authentication datum stored in the external apparatus.Type: GrantFiled: February 1, 2011Date of Patent: July 15, 2014Assignee: Seiko Precision Inc.Inventors: Kenji Ozawa, Koji Ehara
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Publication number: 20140063091Abstract: A time recorder includes: a housing that has a platen; a printing unit that prints on an object to be printed, the printing unit being disposed within the housing and on the platen; and printing gap adjusters (50a). The printing gap adjusters (50a) include: rotating guide roller fixing gears (500) that are supported by side block frames (202) of the printing unit; a guide roller R disposed at a position eccentrically apart from a rotation axis of the guide roller fixing gears (500); guide portions (60) that are disposed in the housing and abut against the guide roller R in a first direction parallel with a printing direction.Type: ApplicationFiled: October 1, 2012Publication date: March 6, 2014Applicant: SEIKO Precision Inc.Inventor: Koji Ehara
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Publication number: 20140028134Abstract: An actuator includes: a coil; a permanent magnet rotor secured to and rotatably supported by an output shaft inside the coil; a bobbin made of a non-magnetic material and around which the coil is wound; a first stator inserted into and secured to the bobbin in one direction, and including an inner magnetic pole portion and an outer magnetic pole portion extending inside and outside the coil in an axial direction of the rotor, respectively; and a second stator inserted into and secured to the bobbin in a direction opposite to the one direction, and including an inner magnetic pole portion and an outer magnetic pole portion extending inside and outside the coil in the axial direction of the rotor, respectively.Type: ApplicationFiled: October 2, 2013Publication date: January 30, 2014Applicant: Seiko Precision Inc.Inventors: Masami YAMAMOTO, Kenichi KUDO
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Publication number: 20140010526Abstract: A focal plane shutter includes: a board including an opening; a leading blade and a trailing blade opening and closing the opening; first and second drive members respectively driving the leading blade and the trailing blade; first and second actuators respectively driving the first and second drive members; a first biasing member biasing the first drive member to move the leading blade away from the opening; and a second biasing member biasing the second drive member to move the trailing blade away from the opening.Type: ApplicationFiled: September 11, 2013Publication date: January 9, 2014Applicant: SEIKO PRECISION INC.Inventors: Hiroshi TAKAHASHI, Minori MURATA, Chiaki NEMOTO, Shoichi TOKURA
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Publication number: 20140010527Abstract: A blade drive device includes: a board including an opening; a blade movable between a position receding from the opening and a position covering at least a portion of the opening; a first actuator including a first rotor rotatable about a first axis and a first stator, and being capable of driving the blade; a second actuator including a second rotor rotatable about a second axis and a second stator, and being capable of driving the blade; first and second positioning portions respectively positioning the first and second actuators; and a first biasing member respectively biasing the first and second actuators toward the first and second positioning portions.Type: ApplicationFiled: September 11, 2013Publication date: January 9, 2014Applicant: SEIKO PRECISION INC.Inventor: Mitsuru SUZUKI
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Publication number: 20130322866Abstract: A blade drive device includes: a blade; a board including an opening opened and closed by the blade; an actuator including a rotor; an output member driven by the rotor; a drive member rotatable relative to the board in response to the output member; a driven member driving the blade in response to the drive member; and a holder holding the actuator, wherein the holder includes an escape hole, the drive member includes: a support portion rotatably supported; a first connection portion connected with the output member; and a second connection portion connected with the driven member, and the first connection portion is positioned in the escape hole between the second connection portion and the support portion.Type: ApplicationFiled: August 7, 2013Publication date: December 5, 2013Applicant: SEIKO PRECISION INC.Inventor: Mitsuru SUZUKI
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Patent number: 8573867Abstract: A focal plane shutter includes: a board including an opening; an arm including: a rear end portion rotatably supported by the board; and a front end portion swingable in response to rotation of the rear and portion; blades coupled to the arm for opening and closing the opening; and a sensor arranged at a position opposite to the arm across the opening, and detecting a state of the blades.Type: GrantFiled: May 16, 2012Date of Patent: November 5, 2013Assignee: Seiko Precision Inc.Inventors: Hiroshi Takahashi, Hideki Tanaka
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Patent number: 8550731Abstract: A blade drive device includes: a board including an optical path opening; a blade including a plurality of openings; a first drive source that swings the blade to move toward and away from the optical path opening; and a second drive source that changes a position of a swinging fulcrum of the blade relative to the board. The first drive source includes a first rotor and a first transmitting portion transmitting a rotation of the first rotor to the blade. The second drive source includes a second rotor and a second transmitting portion transmitting a rotation of the second rotor to the blade. The blade includes a cam slot engaging the first transmitting portion and a fitting hole into which the second transmitting portion slidably fits.Type: GrantFiled: March 22, 2011Date of Patent: October 8, 2013Assignee: Seiko Precision Inc.Inventors: Phichet Numnual, Prapas Charoensilputthakun
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Patent number: D710218Type: GrantFiled: September 18, 2013Date of Patent: August 5, 2014Assignee: SEIKO Precision, Inc.Inventors: Hideki Tanaka, Tetsuo Okaya
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Patent number: D710219Type: GrantFiled: September 18, 2013Date of Patent: August 5, 2014Assignee: SEIKO Precision, Inc.Inventor: Hideki Tanaka