Patents by Inventor Masayoshi Taira
Masayoshi Taira 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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Publication number: 20240150533Abstract: A method for producing a polytetrafluoroethylene particle, which includes subjecting tetrafluoroethylene to suspension polymerization in an aqueous medium to prepare a suspension-polymerized particle of polytetrafluoroethylene, washing and then crushing the suspension-polymerized particle or crushing the suspension-polymerized particle with washing to prepare a crushed particle, dehydrating the crushed particle to prepare a crushed particle having a water content of 40% by mass or less, and subjecting the dehydrated crushed particle to heat treatment to produce a polytetrafluoroethylene particle.Type: ApplicationFiled: December 29, 2023Publication date: May 9, 2024Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takayuki TANAKA, Masayoshi Miyamoto, Tomoki Minamiyama, Takeki Kusunoki, Tokahiro Taira, Takuya Yamabe, Hirotoshi Yoshida, Taketo Kato, Taku Yamanaka, Mitsuo Tsukamoto
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Publication number: 20240150505Abstract: A method for producing a polytetrafluoroethylene powder, which includes subjecting tetrafluoroethylene to suspension polymerization in an aqueous medium to prepare a suspension-polymerized particle of non melt-processible polytetrafluoroethylene, drying the suspension-polymerized particle to prepare a dry particle, subjecting the dry particle to fluorine radical treatment to prepare a fluorine radical-treated particle, and crushing the fluorine radical-treated particle to produce a polytetrafluoroethylene powder. Also disclosed is a polytetrafluoroethylene formed article obtained by forming the polytetrafluoroethylene powder, as well as a polytetrafluoroethylene compression-molded article obtained by compression molding the polytetrafluoroethylene powder.Type: ApplicationFiled: December 27, 2023Publication date: May 9, 2024Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takahiro TAIRA, Kazuhiro Mishima, Takayuki Tanaka, Takeki Kusunoki, Masayoshi Miyamoto, Tomoki Minamiyama, Mitsuo Tsukamoto, Kenji Ichikawa, Takuya Yamabe, Hirotoshi Yoshida, Taketo Kato, Taku Yamanaka
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Publication number: 20240117077Abstract: A composition containing polytetrafluoroethylene and substantially free from a compound represented by Formula (3): (H—(CF2)8—SO3)qM2 wherein M2 is H, a metal atom, NR54 (where R5s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and q is 1 or 2. Also disclosed is a molded boy including the composition.Type: ApplicationFiled: November 7, 2023Publication date: April 11, 2024Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takahiro TAIRA, Kazuhiro MISHIMA, Chiaki OKUI, Tadao HAYASHI, Hirotoshi YOSHIDA, Yuuji TANAKA, Masayoshi MIYAMOTO, Taku YAMANAKA, Taketo KATO
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Patent number: 7890046Abstract: A punching apparatus having a punching member which effects punching on a sheet, and a driving mechanism which moves the punching member in a sheet width direction intersecting with a sheet conveying direction. On the basis of the difference between the position of a current sheet and the position of a next sheet succeeding thereto detected by a detecting sensor which detects the position of each conveyed sheet in the sheet width direction, at a position upstream of the punching member, the punching member is moved by the driving mechanism along the sheet width direction from a punching position for the current sheet to a punching position for the next sheet.Type: GrantFiled: March 21, 2005Date of Patent: February 15, 2011Assignee: Canon Kabushiki KaishaInventors: Takako Hanada, Tsuyoshi Moriyama, Akinobu Nishikata, Masayoshi Taira, Hiroaki Tomiyasu
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Patent number: 7520497Abstract: The invention comprises registration roller pairs which detect a skew amount of a sheet being conveyed; registration roller pairs which perform skew correction of the sheet while the sheet is being conveyed; a punch unit which performs punching of the sheet; a punch-unit driving portion which drives the punch unit; a sheet-edge detecting sensor which performs detection of a sheet edge in a direction intersecting with a sheet conveyance direction; a punch-unit moving device which moves the punch unit in the direction intersecting with the sheet conveyance direction; a sheet detecting sensor which performs detection of a sheet position in the sheet conveyance direction; and a controller portion which performs control such that after skew of the sheet is corrected by the registration roller pairs in accordance with detection results of skew amount sensors, and punching is performed on the sheet by the punch-unit moving device and the punch driving portion in accordance with a detection result of the sheet detectType: GrantFiled: March 18, 2005Date of Patent: April 21, 2009Assignee: Canon Kabushiki KaishaInventors: Tsuyoshi Moriyama, Takako Hanada, Masayoshi Taira, Akinobu Nishikata, Hiroaki Tomiyasu
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Patent number: 7477861Abstract: A temperature control device includes a first heat source, a second heat source configured to heat a controlled object subjected to temperature control, a first temperature detector configured to detect a temperature of heat from the first heat source, a second temperature detector configured to detect a temperature of the controlled object, a heat transfer member configured to transfer heat produced by the first heat source to the controlled object, a heat-transfer-amount changing unit configured to change the amount of heat transferred to the controlled object by the heat transfer member, and a controller configured to control a transfer state of the heat-transfer-amount changing unit on the basis of an output from the first temperature detector and an output from the second temperature detector.Type: GrantFiled: April 5, 2007Date of Patent: January 13, 2009Assignee: Canon Kabushiki KaishaInventor: Masayoshi Taira
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Patent number: 7376368Abstract: An image forming apparatus has a water content determination apparatus that can precisely determining a water content in a medium regardless of an environment where the image forming apparatus is installed. The water content determination apparatus has a detection device that outputs a first signal while the medium is absent in an electrostatic capacitance region formed in a path where the medium is conveyed and outputs a second signal while the medium is present in the electrostatic capacitance region. The temperature in the image forming apparatus is determined based on the first signal. The water content in the medium is determined based on the second signal and the temperature determined by the temperature determination device.Type: GrantFiled: February 28, 2006Date of Patent: May 20, 2008Assignee: Canon Kabushiki KaishaInventors: Masayoshi Taira, Toshifumi Kakutani, Takashi Sugiura, Shinichi Takata, Yushi Oka, Fumitaka Sobue, Naohisa Nagata
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Publication number: 20070248371Abstract: A temperature control device includes a first heat source, a second heat source configured to heat a controlled object subjected to temperature control, a first temperature detector configured to detect a temperature of heat from the first heat source, a second temperature detector configured to detect a temperature of the controlled object, a heat transfer member configured to transfer heat produced by the first heat source to the controlled object, a heat-transfer-amount changing unit configured to change the amount of heat transferred to the controlled object by the heat transfer member, and a controller configured to control a transfer state of the heat-transfer-amount changing unit on the basis of an output from the first temperature detector and an output from the second temperature detector.Type: ApplicationFiled: April 5, 2007Publication date: October 25, 2007Applicant: CANON KABUSHIKI KAISHAInventor: Masayoshi Taira
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Patent number: 7277113Abstract: An image forming apparatus in which the intensity of a light beam used to form a latent image is switched in response to a change in resolution. A laser emits a light beam for forming a latent image on a photosensitive drum. A polygon mirror scans the emitted light beam. BD sensors detect the scanned beam. A timing controller selects the preferable timing from a storage device table according to the intensity of the light beam or the resolution when controlling the light emission timing of the lasers in response to a detection of timing of the detected light beam.Type: GrantFiled: March 24, 2005Date of Patent: October 2, 2007Assignee: Canon Kabushiki KaishaInventors: Fumitaka Sobue, Masayoshi Taira, Toshifumi Kakutani, Takashi Sugiura, Shinichi Takata, Yushi Oka, Naohisa Nagata
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Publication number: 20060201236Abstract: A water content determination apparatus which are capable of precisely determining water content contained in a medium regardless of an environment where an image forming apparatus is installed. The water content determination apparatus. A signal in accordance with presence or absence of a medium in an electrostatic capacitance region formed on a paper path is outputted where the medium for image forming is conveyed. Temperature in the water content determination apparatus is determined based on an output signal of the detection device in absence of the medium passing in the electrostatic capacitance region. Water content contained in the medium is determined based on the output signal of the detection device in absence of the medium passing in the electrostatic capacitance region, the output signal of the detection device in presence of the medium passing in the electrostatic capacitance region, and the temperature determined by the temperature determination device.Type: ApplicationFiled: February 28, 2006Publication date: September 14, 2006Applicant: Canon Kabushiki KaishaInventors: Masayoshi Taira, Toshifumi Kakutani, Takashi Sugiura, Shinichi Takata, Yushi Oka, Fumitaka Sobue, Naohisa Nagata
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Publication number: 20050271445Abstract: A punching apparatus having a punching member which effects punching on a sheet, and a driving mechanism which moves the punching member in a sheet width direction intersecting with a sheet conveying direction. On the basis of the difference between the position of a current sheet and the position of a next sheet succeeding thereto detected by a detecting sensor which detects the position of each conveyed sheet in the sheet width direction, at a position upstream of the punching member, the punching member is moved by the driving mechanism along the sheet width direction from a punching position for the current sheet to a punching position for the next sheet.Type: ApplicationFiled: March 21, 2005Publication date: December 8, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Takako Hanada, Tsuyoshi Moriyama, Akinobu Nishikata, Masayoshi Taira, Hiroaki Tomiyasu
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Publication number: 20050212901Abstract: An image forming apparatus in which the intensity of a light beam used to form a latent image is switched in response to a change in resolution. A laser emits a light beam for forming a latent image on a photosensitive drum. A polygon mirror scans the emitted light beam. BD sensors detect the scanned beam. A timing controller selects the preferable timing from a storage device table according to the intensity of the light beam or the resolution when controlling the light emission timing of the lasers in response to a detection of timing of the detected light beam.Type: ApplicationFiled: March 24, 2005Publication date: September 29, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Fumitaka Sobue, Masayoshi Taira, Toshifumi Kakutani, Takashi Sugiura, Shinichi Takata, Yushi Oka, Naohisa Nagata
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Publication number: 20050212194Abstract: The invention comprises registration roller pairs which detect a skew amount of a sheet being conveyed; registration roller pairs which perform skew correction of the sheet while the sheet is being conveyed; a punch unit which performs punching of the sheet; a punch-unit driving portion which drives the punch unit; a sheet-edge detecting sensor which performs detection of a sheet edge in a direction intersecting with a sheet conveyance direction; a punch-unit moving device which moves the punch unit in the direction intersecting with the sheet conveyance direction; a sheet detecting sensor which performs detection of a sheet position in the sheet conveyance direction; and a controller portion which performs control such that after skew of the sheet is corrected by the registration roller pairs in accordance with detection results of skew amount sensors, and punching is performed on the sheet by the punch-unit moving device and the punch driving portion in accordance with a detection result of the sheet detectType: ApplicationFiled: March 18, 2005Publication date: September 29, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Tsuyoshi Moriyama, Takako Hanada, Masayoshi Taira, Akinobu Nishikata, Hiroaki Tomiyasu
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Patent number: 6408149Abstract: An image processing apparatus structured by combining an image reading apparatus and an image formation apparatus with each other enables a user to freely combine these apparatuses without considering the sum of power consumption of the image reading apparatus and power consumption of the image formation apparatus. When the sum of power consumption of a reader unit and power consumption of a printer unit exceeds, e.g., 1.5 kW, the reader unit is set to be in a low power consumption mode such that the sum of power consumption becomes equal to or smaller than 1.5 kW. Even when the low power consumption mode of the least power consumption quantity is selected and the sum of power consumption still exceeds 1.5 kW, use of the apparatus is inhibited and the inhibition is displayed.Type: GrantFiled: June 8, 2000Date of Patent: June 18, 2002Assignee: Canon Kabushiki KaishaInventors: Masayoshi Taira, Hiroaki Takeda, Takeharu Uchizono, Hideaki Chishima, Satoru Kanno, Masahiro Kurahashi, Satoru Kijima
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Patent number: 6348982Abstract: An image processing apparatus is provided which comprises an image reading section for reading an original document by causing an image reading head of the image reading section to move relative to an original document; an image recording section for recording an image on a recording medium in accordance with an image signal; a power source for supplying power to the image reading section and the image recording section; and a control device for controlling the speed of movement of the image reading head according to an operating state of the image recording section. The image processing apparatus of the invention overcomes problems associated with the use of prior art image forming apparatus, such as multi-function copying machines, that include an image reading section and an image recording section, and which require the use of large-capacity power sources for supporting the electrical loads of various components that may be operating simultaneously within the individual apparatuses.Type: GrantFiled: April 22, 1999Date of Patent: February 19, 2002Assignee: Canon Kabushiki KaishaInventors: Yukimasa Iseki, Takashi Sugiura, Yasuyuki Aikoh, Tetsuya Morita, Takeharu Uchizono, Hideaki Chishima, Satoru Kanno, Masayoshi Taira, Shunji Yamashida
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Patent number: 6097904Abstract: In order to separately detect an abnormal temperature rise at a fixing roller of an image forming apparatus and a disconnection of a thermistor that detects the temperature of the fixing roller, the first and the second resistors are selected and connected to a thermistor for predetermined periods of time. When the first resistor is connected to the thermistor, a disconnection of the thermistor is detected based on a detection voltage that corresponds to the voltage division ratio of the reading for the first resistor to the reading for the thermistor. When the second resistor is connected to the thermistor, an abnormal temperature rise of the fixing roller is detected based on a detection voltage that corresponds to the voltage division ratio of the reading for the second resistor to the reading for the thermistor.Type: GrantFiled: February 10, 1998Date of Patent: August 1, 2000Assignee: Canon Kabushiki KaishaInventors: Kunio Tsuruno, Koki Kuroda, Masayoshi Taira
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Patent number: 6014459Abstract: The apparatus reads an original by an image reader, and if it recognizes caption(s) included in the original, stores a page number of the original into a memory, thereafter, performs copying based on the stored page number such that the original page including the caption is transferred onto the front side of a recording sheet.Type: GrantFiled: May 18, 1999Date of Patent: January 11, 2000Assignee: Canon Kabushiki KaishaInventors: Masayoshi Taira, Yoshihiro Hosomi, Hirokazu Takahashi, Yoshio Mizuno, Tokuharu Kaneko, Satoshi Kaneko, Taisei Fukada, Keizo Isemura, Akihiko Satoh, Hirohiko Kishimoto, Masahiro Serizawa, Noriaki Matsui
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Patent number: 5940583Abstract: The apparatus reads an original by an image reader, and if it recognizes caption(s) included in the original, stores a page number of the original into a memory, thereafter, performs copying based on the stored page number such that the original page including the caption is transferred onto the front side of a recording sheet.Type: GrantFiled: November 13, 1995Date of Patent: August 17, 1999Assignee: Canon Kabushiki KaishaInventors: Masayoshi Taira, Yoshihiro Hosomi, Hirokazu Takahashi, Yoshio Mizuno, Tokuharu Kaneko, Satoshi Kaneko, Taisei Fukada, Keizo Isemura, Akihiko Satoh, Hirohiko Kishimoto, Masahiro Serizawa, Noriaki Matsui
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Patent number: 5930001Abstract: An image processor rotates an image in conformity with the orientation of an original, thereby enhancing user convenience. An original conveyed by an automatic conveyance device is read by an image reader and the image is stored in an image memory. A character in the stored image is subsequently recognized by a character recognition unit and the orientation of the character is discriminated. The image is rotated by an image editor in conformity with a stapling position, and the rotated image is recorded by an image recording unit. Sheets of paper on which images are recorded are stapled at the stapling position by a staple provided in a sorter.Type: GrantFiled: October 24, 1995Date of Patent: July 27, 1999Assignee: Canon Kabushiki KaishaInventors: Akihiko Satoh, Yoshihiro Hosomi, Hirokazu Takahashi, Yoshio Mizuno, Tokuharu Kaneko, Satoshi Kaneko, Taisei Fukada, Keizo Isemura, Hirohiko Kishimoto, Masayoshi Taira, Masahiro Serizawa, Noriaki Matsui
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Patent number: 5809183Abstract: A method and apparatus for recognizing character information in an original document with high recognition accuracy regardless of the size of a character to be recognized. An input image is processed by an image processing circuit and stored in an image recording unit. A character region in the recorded image data is detected by a recognition section, and the image corresponding to the detected character region is read with a predetermined magnification. Character recognition is performed on the image of the character region read at the predetermined magnification, in the recognition section. If the recognition accuracy does not satisfy a predetermined criterion, the same image is read again with a modified magnification wherein the magnification is determined on the basis of preset sizes and the size of the character pattern of a character to be recognized.Type: GrantFiled: November 30, 1994Date of Patent: September 15, 1998Assignee: Canon Kabushiki KaishaInventors: Masahiro Serizawa, Yoshihiro Hosomi, Hirokazu Takahashi, Yoshio Mizuno, Tokuharu Kaneko, Satoshi Kaneko, Taisei Fukada, Keizo Isemura, Akihiko Satoh, Hirohiko Kishimoto, Masayoshi Taira, Noriaki Matsui