Patents by Inventor Seiji Mishima
Seiji Mishima 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: 9217947Abstract: An exposure unit includes a lens group having a plurality of lenses arrayed in a first direction and an element array which is arranged to face the lens group and includes a plurality of organic EL elements arrayed in parallel with the first direction on a substrate, a drive circuit including a plurality of TFT circuits for controlling luminance per unit time of the organic EL element is arranged on the substrate, and the TFT circuit controls the luminance of the organic EL element based on a signal created by an area gray scale method.Type: GrantFiled: June 23, 2015Date of Patent: December 22, 2015Assignee: Canon Kabushiki KaishaInventors: Tomokazu Morita, Takeyoshi Saiga, Yu Miyajima, Seiji Mishima
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Publication number: 20150293468Abstract: An exposure unit includes a lens group having a plurality of lenses arrayed in a first direction and an element array which is arranged to face the lens group and includes a plurality of organic EL elements arrayed in parallel with the first direction on a substrate, a drive circuit including a plurality of TFT circuits for controlling luminance per unit time of the organic EL element is arranged on the substrate, and the TFT circuit controls the luminance of the organic EL element based on a signal created by an area gray scale method.Type: ApplicationFiled: June 23, 2015Publication date: October 15, 2015Inventors: Tomokazu Morita, Takeyoshi Saiga, Yu Miyajima, Seiji Mishima
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Patent number: 9091954Abstract: An exposure unit includes a lens group having a plurality of lenses arrayed in a first direction and an element array which is arranged to face the lens group and includes a plurality of organic EL elements arrayed in parallel with the first direction on a substrate, a drive circuit including a plurality of TFT circuits for controlling luminance per unit time of the organic EL element is arranged on the substrate, and the TFT circuit controls the luminance of the organic EL element based on a signal created by an area gray scale method.Type: GrantFiled: June 25, 2014Date of Patent: July 28, 2015Assignee: Canon Kabushiki KaishaInventors: Tomokazu Morita, Takeyoshi Saiga, Yu Miyajima, Seiji Mishima
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Publication number: 20150002596Abstract: An exposure unit includes a lens group having a plurality of lenses arrayed in a first direction and an element array which is arranged to face the lens group and includes a plurality of organic EL elements arrayed in parallel with the first direction on a substrate, a drive circuit including a plurality of TFT circuits for controlling luminance per unit time of the organic EL element is arranged on the substrate, and the TFT circuit controls the luminance of the organic EL element based on a signal created by an area gray scale method.Type: ApplicationFiled: June 25, 2014Publication date: January 1, 2015Inventors: Tomokazu Morita, Takeyoshi Saiga, Yu Miyajima, Seiji Mishima
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Patent number: 8075944Abstract: In case of forming films in plural positions with an ink jet head having plural nozzles, to provide a method of efficiently correcting an aberration in the liquid droplet applying position resulting for example from a distortion of a substrate, thereby producing an electron source with a high production yield. Positions of device electrodes 2, 3 on the electron source substrate 1 are detected by fetching in advance a surface image of the substrate 1, then a position of an electroconductive film 4 is calculated as a liquid droplet applying position, and an inclination angle ? of the ink jet head 11 is so regulated that a pitch of the nozzles 12 matches a pitch d of the obtained liquid droplet applying positions.Type: GrantFiled: February 16, 2006Date of Patent: December 13, 2011Assignee: Canon Kabushiki KaishaInventor: Seiji Mishima
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Publication number: 20060216409Abstract: In case of forming films in plural positions with an ink jet head having plural nozzles, to provide a method of efficiently correcting an aberration in the liquid droplet applying position resulting for example from a distortion of a substrate, thereby producing an electron source with a high production yield. Positions of device electrodes 2, 3 on the electron source substrate 1 are detected by fetching in advance a surface image of the substrate 1, then a position of an electroconductive film 4 is calculated as a liquid droplet applying position, and an inclination angle ? of the ink jet head 11 is so regulated that a pitch of the nozzles 12 matches a pitch d of the obtained liquid droplet applying positions.Type: ApplicationFiled: February 16, 2006Publication date: September 28, 2006Applicant: CANON KABUSHIKI KAISHAInventor: Seiji Mishima
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Patent number: 7037158Abstract: A plurality of kinds of ink jet devices are used for different regions, respectively. For element electrode pairs arranged in the vicinity of the fixed position of a spacer for example, there is used an ink jet device having an excellent performance in drop placement accuracy, drop volume accuracy or the like. For the remaining element electrode pairs, there are used ink jet devices having an inferior performance. As a result, an electron source substrate of a high quality can be manufactured at a low cost and with a high throughput.Type: GrantFiled: September 22, 2003Date of Patent: May 2, 2006Assignee: Canon Kabushiki KaishaInventor: Seiji Mishima
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Publication number: 20050128267Abstract: An electronic device manufacturing apparatus includes a gas removal means for removing a gas dissolved in a liquid containing the formation material of a member constituting an electronic device, a droplet discharge means for discharging droplets of the liquid, and a means for controlling the relative positions of the droplet discharge means and a substrate on which the electronic device is formed. The droplets are applied to a predetermined position on the substrate. The gas removal means includes a closed vessel filled with a membrane formed from a semi-transmitting film capable of transmitting a gas, and a vacuum unit for evacuating the closed vessel.Type: ApplicationFiled: January 21, 2005Publication date: June 16, 2005Applicant: CANON KABUSHIKI KAISHAInventor: Seiji Mishima
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Patent number: 6901659Abstract: An electron-emitting device manufacturing method comprising a gas removal step of removing a gas dissolved in a liquid containing a formation material of an electroconductive film in which an electron emitting area is to be formed, a temperature adjusting step of adjusting a temperature of the liquid from which the gas is removed, and a droplet discharge step of discharging droplets of which the temperature is adjusted by droplet discharge means in an ink jet manner, while controlling relative positions of the droplet discharge means and a substrate on which the electroconductive film in which the electron-emitting area is to be formed is formed. The droplets are thereby applied to a predetermined position on the substrate.Type: GrantFiled: October 24, 2000Date of Patent: June 7, 2005Assignee: Canon Kabushiki KaishaInventor: Seiji Mishima
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Patent number: 6815001Abstract: A method of manufacturing an electronic device including a step of giving a droplet 12 of a liquid containing a formation material of a member that constitutes the electronic device to a plurality of portions on a substrate 1 while said substrate 1 and a droplet ejecting portion 7 are moved relatively in an in-surface direction of said substrate 1, wherein the droplet 12 is given while a position on a droplet given surface to which the droplet is given is corrected in accordance with the distribution of distances between the ejecting portion 7 and the droplet 12 given surface on the substrate which occurs when the substrate 1 and the ejecting portion 7 are relatively moved. Thereby forming the member constituting the electronic device accurately at the plural portion on the substrate 1, and thus forming plural electronic device of same charactoristics.Type: GrantFiled: December 11, 2000Date of Patent: November 9, 2004Assignee: Canon Kabushiki KaishaInventors: Seiji Mishima, Toshifumi Yoshioka, Mitsutoshi Hasegawa, Kazuhiro Sando, Kazuya Shigeoka
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Publication number: 20040058462Abstract: A plurality of kinds of ink jet devices (109 and 110) are properly used for regions. For element electrode pairs (2 and 3) arranged in the vicinity of the fixed position of a spacer (91), for example, there is used an ink jet device (109) having an excellent performance such as a drop placement accuracy or a drop volume accuracy. For the remaining element electrode pairs (2 and 3), there are used ink jet devices (110) having an inferior performance. As a result, an electron source substrate of a high quality can be manufactured at a low cost and in a high throughput.Type: ApplicationFiled: September 22, 2003Publication date: March 25, 2004Applicant: CANON KABUSHIKI KAISHAInventor: Seiji Mishima
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Patent number: 6579139Abstract: Disclosed is a method, for forming a film locally on a substrate, which comprises the steps of detecting the state of the substrate employing the obtained result to calculate positional information concerning a plurality of locations at which the material for the film is to be provided to form the film, and providing the material for the film at the plurality of locations based on the positional information that is obtained for the plurality of locations.Type: GrantFiled: February 11, 1999Date of Patent: June 17, 2003Assignee: Canon Kabushiki KaishaInventors: Seiji Mishima, Mitsutoshi Hasegawa, Kazuhiro Sando, Kazuya Shigeoka
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Patent number: 6220912Abstract: In order to suppress variation in delivery amounts in dispensing a material for forming electron emitting portions, a substantially homogeneous material is dispensed from a plurality of output portions to each of plural objective portions. This averages amounts of the material dispensed to the respective objective portions even if there is variation in delivery amounts of material from the respective output portions.Type: GrantFiled: May 8, 1998Date of Patent: April 24, 2001Assignee: Canon Kabushiki KaishaInventors: Kazuya Shigeoka, Mitsutoshi Hasegawa, Seiji Mishima, Kazuhiro Sando
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Patent number: 6210245Abstract: In a method for producing an electron source substrate having a matrix of electron emitting elements formed by dispensing droplets of a solution containing a material for conductive thin film between each pair of element electrodes arranged in a matrix pattern on substrate, by use of an ink jet device, the ink jet device is the one having plural nozzles, delivery amounts of the respective nozzles are detected, the delivery amounts of the respective nozzles are adjusted based on the detection results, and thereafter dispensing of the droplets is carried out, during the dispensing of droplets, the substrate is moved relative to the ink jet device, and the droplets are dispensed from the plural nozzles to areas between each pair of element electrodes in plural rows or columns simultaneously and in parallel. An image forming apparatus is produced by placing at least a face plate equipped with fluorescent substance opposite the electron source substrate produced by the above method.Type: GrantFiled: May 8, 1998Date of Patent: April 3, 2001Assignee: Canon Kabushiki KaishaInventors: Kazuhiro Sando, Mitsutoshi Hasegawa, Seiji Mishima, Kazuya Shigeoka
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Patent number: 5659560Abstract: In a light source apparatus, the polarization mode of oscillation light from a semiconductor laser is switchable between two different polarization modes when a modulation current is injected into a portion of a light waveguide of the semiconductor laser. Light in one polarization mode and light in the other polarization mode are separately obtained from the oscillation light from the semiconductor laser. At least the light in one of the two different polarization modes is converted to an electric signal. Current injected into the semiconductor laser is controlled based on the electric signal such that a modulation state of light from the semiconductor laser is stabilized. The light in the other polarization mode, or light in one polarization mode emitted from the other emission side of the semiconductor laser may be used for optical transmission.Type: GrantFiled: April 28, 1995Date of Patent: August 19, 1997Assignee: Canon Kabushiki KaishaInventors: Toshihiko Ouchi, Masao Majima, Jun Nitta, Seiji Mishima, Ouichi Kubota
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Patent number: 5523844Abstract: An apparatus for detecting a displacement of an object comprises a light source element for emitting a detection light beam, a reflection member for reflecting the detection light beam from the light source element, the detection light beam being irradiated to the object by the reflection by the reflection member, a photo-sensing element for sensing the detection light beam reflected from the object by a photo-sensing plane thereof to detect an incident position of the detection light beam on the photo-sensing plane, displacement information of the object being determined in accordance with the detection by the photo-sensing element, and a substrate having the light source element, the reflection member and the photo-sensing element arranged thereon.Type: GrantFiled: July 13, 1993Date of Patent: June 4, 1996Assignee: Canon Kabushiki KaishaInventors: Masanobu Hasegawa, Minoru Yoshii, Noriaki Ohguri, Masayoshi Sekine, Seiji Mishima
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Patent number: 5369719Abstract: A first light waveguide is formed, and second and third light waveguides are respectively connected to the first light waveguide at first and second positions. A first coupler for effecting tight branching and/or combining is arranged near the first position, and a second coupler for effecting light branching and/or combining is arranged near the second position. An optical amplifier is arranged on the first light waveguide between the first and second positions for compensating for a light loss of a light wave caused by each of the first and second coupler.Type: GrantFiled: June 16, 1992Date of Patent: November 29, 1994Assignee: Canon Kabushiki KaishaInventors: Seiji Mishima, Yuichi Handa
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Patent number: 5246362Abstract: An automatic sub-mold changer for use in an injection molding machine having a pair of molds in which sub-molds are detachably installed in an open state of the molds includes a sub-mold stock device for stocking plural sub-molds therein, the sub-mold stock device being spaced from the pair of molds on the injection molding machine. An arm device having an end portion which carries chucks to which the sub-molds are detachably affixed is movable between a first position juxtaposed to the sub-mold stock device and a second position juxtaposed to the pair of molds on the injection molding machine.Type: GrantFiled: January 14, 1993Date of Patent: September 21, 1993Assignee: Seikosha Co., Ltd.Inventors: Koichi Kobayashi, Seiji Mishima, Kenji Kamio, Etsuhisa Miyata, Katsuhiko Fukuda, Junichi Oi