Patents by Inventor Yasunaga Yamaguchi
Yasunaga Yamaguchi 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: 9420138Abstract: A printer includes a main apparatus, a device including a drive unit operable by electric power from the main apparatus; and a connection member. The main apparatus includes a first power source and a first output port. The device includes: a first input port from which the electric power from the first power source is inputted; a protector with a first end connected to the first input port; a second output port connected to a second end of the protector and to output electric power from the protector to the outside thereof; and a second input port connected to the drive unit. The connection member includes a first connecting path to connect the first output and input ports and a second connecting path to connect the second output port to the second input port to supply the output from the second output port to the second input port.Type: GrantFiled: April 23, 2015Date of Patent: August 16, 2016Assignee: Oki Data CorporationInventor: Yasunaga Yamaguchi
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Patent number: 9207621Abstract: A method of controlling a data processing apparatus including: a drive system device; a data processing device configured to perform data processing; and a power supply circuit configured to generate a drive system voltage to be supplied to the drive system device and a data processing system voltage to be supplied to the data processing device, from an input voltage from an external power supply. The method comprises: when an interruption of the input voltage is detected, switching an operation mode to a power saving mode in which the drive system device is stopped or restrained from driving, and then executing a protective operation for the data processing device.Type: GrantFiled: October 31, 2014Date of Patent: December 8, 2015Assignee: Oki Data CorporationInventor: Yasunaga Yamaguchi
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Publication number: 20150310320Abstract: A printer includes a main apparatus, a device including a drive unit operable by electric power from the main apparatus; and a connection member. The main apparatus includes a first power source and a first output port. The device includes: a first input port from which the electric power from the first power source is inputted; a protector with a first end connected to the first input port; a second output port connected to a second end of the protector and to output electric power from the protector to the outside thereof; and a second input port connected to the drive unit. The connection member includes a first connecting path to connect the first output and input ports and a second connecting path to connect the second output port to the second input port to supply the output from the second output port to the second input port.Type: ApplicationFiled: April 23, 2015Publication date: October 29, 2015Inventor: Yasunaga YAMAGUCHI
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Publication number: 20150125174Abstract: A method of controlling a data processing apparatus including: a drive system device; a data processing device configured to perform data processing; and a power supply circuit configured to generate a drive system voltage to be supplied to the drive system device and a data processing system voltage to be supplied to the data processing device, from an input voltage from an external power supply. The method comprises: when an interruption of the input voltage is detected, switching an operation mode to a power saving mode in which the drive system device is stopped or restrained from driving, and then executing a protective operation for the data processing device.Type: ApplicationFiled: October 31, 2014Publication date: May 7, 2015Inventor: Yasunaga YAMAGUCHI
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Patent number: 8982368Abstract: An image forming apparatus includes a plurality of operation modes. An image reading section reads image information from an original document. An image recording section records the image information on a recording medium. An electric power supply supplies electric power to the image reading section and the image recording section. A controller controls the electric power supply. When the image forming apparatus is operating in a first operation mode where the image recording section is involved, if the controller receives a new operation command that involves the image recording section, the controller drives the image recording section to operate in a second operation mode where the image forming apparatus operates at a lower speed than in the first operation mode.Type: GrantFiled: January 25, 2012Date of Patent: March 17, 2015Assignee: Oki Data CorporationInventor: Yasunaga Yamaguchi
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Publication number: 20120194840Abstract: An image forming apparatus includes a plurality of operation modes. An image reading section reads image information from an original document. An image recording section records the image information on a recording medium. An electric power supply supplies electric power to the image reading section and the image recording section. A controller controls the electric power supply. When the image forming apparatus is operating in a first operation mode where the image recording section is involved, if the controller receives anew operation command that involves the image recording section, the controller drives the image recording section to operate in a second operation mode where the image forming apparatus operates at a lower speed than in the first operation mode.Type: ApplicationFiled: January 25, 2012Publication date: August 2, 2012Applicant: OKI DATA CORPORATIONInventor: Yasunaga YAMAGUCHI
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Patent number: 8126380Abstract: An image forming apparatus includes a plurality of image forming units forming a visible image by attaching charged developer to an electrostatic latent image, a transfer belt member being transferred the visible image formed by each of the plurality of image forming units, a plurality of tension members tightly stretching the transfer belt member, a primary transfer member transferring the visible image formed by the plurality of image forming units to the transfer belt unit, a secondary transfer member transferring the visible image transferred to the transfer belt member on a recording medium, and a fixing unit fixing the visible image transferred to the recording medium. The plurality of image forming units are disposed in at least two transfer regions formed by segmenting the transfer belt member by the plurality of the tension members.Type: GrantFiled: September 24, 2008Date of Patent: February 28, 2012Assignee: Oki Data CorporationInventors: Masahiro Kawano, Tatsuya Murakami, Yasunaga Yamaguchi
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Patent number: 7787237Abstract: A display panel structure includes a circuit board, and a display unit substrate connected to the circuit board and having a display unit. The display panel structure further includes a supporting member comprised of a first supporting section that is fitted to the circuit board, a second supporting section that is fitted to the display unit substrate, and a spacer section to secure a specified space between the circuit board and the display unit substrate. With the supporting member, the display unit substrate is supported in a state inclined relative to the circuit board.Type: GrantFiled: October 17, 2005Date of Patent: August 31, 2010Assignee: Oki Data CorporationInventor: Yasunaga Yamaguchi
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Publication number: 20090080950Abstract: An image forming apparatus includes a plurality of image forming units forming a visible image by attaching charged developer to an electrostatic latent image, a transfer belt member being transferred the visible image formed by each of the plurality of image forming units, a plurality of tension members tightly stretching the transfer belt member, a primary transfer member transferring the visible image formed by the plurality of image forming units to the transfer belt unit, a secondary transfer member transferring the visible image transferred to the transfer belt member on a recording medium, and a fixing unit fixing the visible image transferred to the recording medium. The plurality of image forming units are disposed in at least two transfer regions formed by segmenting the transfer belt member by the plurality of the tension members.Type: ApplicationFiled: September 24, 2008Publication date: March 26, 2009Applicant: OKI DATA CORPORATIONInventors: Masahiro KAWANO, Tatsuya Murakami, Yasunaga Yamaguchi
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Patent number: 7460799Abstract: A developer accommodating apparatus, a developing apparatus and an image forming apparatus are provided capable of obtaining detection stability of irregular reflection light. The developing apparatus of the present invention comprises an accommodating section to accommodate developer of predetermined quantity, a light emitting section to emit light toward outside; and a light shading section to shade the light emitted from the light emitting section according to the predetermined quantity of the developer in the accommodating section.Type: GrantFiled: September 22, 2006Date of Patent: December 2, 2008Assignee: Oki Data CorporationInventor: Yasunaga Yamaguchi
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Patent number: 7403724Abstract: An image forming apparatus capable of settling such problem as an error between a cumulative developer consumption calculated on the basis of image information inputted into a exposing device and an actual developer consumption, which occurred due to fog.Type: GrantFiled: January 18, 2006Date of Patent: July 22, 2008Assignee: Oki Data CorporationInventor: Yasunaga Yamaguchi
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Publication number: 20070071464Abstract: A developer accommodating apparatus, a developing apparatus and an image forming apparatus are provided capable of obtaining detection stability of irregular reflection light. The developing apparatus 4a of the present invention comprises an accommodating section to accommodate developer of predetermined quantity, a light emitting section to emit light toward outside; and a light shading section to shade the light emitted from the light emitting section according to the predetermined quantity of the developer in the accommodating section.Type: ApplicationFiled: September 22, 2006Publication date: March 29, 2007Applicant: OKI DATA CORPORATIONInventor: Yasunaga Yamaguchi
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Patent number: 7187877Abstract: An image forming apparatus includes an apparatus body (48); image bearing bodies (11) for forming electrostatic latent images; a transfer unit (19) opposed to the image bearing bodies and having transfer sections (15); a voltage supply (13) for generating a transfer voltage; a mounting member (12) for bringing the transfer sections (15) into contact with the image bearing bodies (11) when the transfer unit (19) is installed at an appropriate position within the apparatus body (48) and into non-contact with the image bearing bodies (11) when the transfer unit (19) is installed at an inappropriate position within the apparatus body (48); and detection devices (14) for applying the transfer voltage to the transfer sections (15) to detect whether the transfer unit (19) is in contact with the image bearing bodies (11).Type: GrantFiled: December 23, 2004Date of Patent: March 6, 2007Assignee: Oki Data CorporationInventor: Yasunaga Yamaguchi
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Patent number: 7171132Abstract: An image-forming apparatus includes an image-forming section, a detection section, and a controller. The image-forming section has an image-bearing body on which an electrostatic latent image is formed and a developing unit that develops the electrostatic latent image. The detection section generates an output indicative of a remaining amount of toner in the developing unit. The controller drives the drive section to cause the image-forming section to move from one position to another, and determines a position of the image-forming section based on the output of the detection section. The detection section is mounted to a toner cartridge within the developing unit. When the image-forming section is moved from one position to another, the detection section receives light reflected by a high-reflectivity area and a low-reflectivity area, thereby detecting the position of the image-forming section.Type: GrantFiled: June 24, 2004Date of Patent: January 30, 2007Assignee: Oki Data CorporationInventors: Makoto Yabuki, Hiroyuki Inoue, Yasunaga Yamaguchi, Kazuaki Arai
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Patent number: 7103293Abstract: A heating section (1) heats a fixing roller (10). A cooling section (2) cools the interior of a unit or apparatus. A temperature detecting section (3) detects the temperature of the fixing roller (10). A control section (4) controls current conduction to the heating section (1) based on the detected temperature. A conduction cutoff section (5) cuts off current conduction to the heating and cooling sections (1, 2) regardless of conduction control by the control section (4) if the detected temperature exceeds a predetermined temperature.Type: GrantFiled: October 28, 2004Date of Patent: September 5, 2006Assignee: Oki Data CorporationInventor: Yasunaga Yamaguchi
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Publication number: 20060158479Abstract: An image forming apparatus capable of settling such problem as an error between a cumulative developer consumption calculated on the basis of image information inputted into a exposing device and an actual developer consumption, which occurred due to fog.Type: ApplicationFiled: January 18, 2006Publication date: July 20, 2006Inventor: Yasunaga Yamaguchi
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Publication number: 20060092036Abstract: A display panel structure includes a circuit board, and a display unit substrate connected to the circuit board and having a display unit. The display panel structure further includes a supporting member comprised of a first supporting section that is fitted to the circuit board, a second supporting section that is fitted to the display unit substrate, and a spacer section to secure a specified space between the circuit board and the display unit substrate. With the supporting member, the display unit substrate is supported in a state inclined relative to the circuit board.Type: ApplicationFiled: October 17, 2005Publication date: May 4, 2006Inventor: Yasunaga Yamaguchi
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Publication number: 20050141908Abstract: An image forming apparatus includes an apparatus body (48); image bearing bodies (11) for forming electrostatic latent images; a transfer unit (19) opposed to the image bearing bodies and having transfer sections (15); a voltage supply (13) for generating a transfer voltage; a mounting member (12) for bringing the transfer sections (15) into contact with the image bearing bodies (11) when the transfer unit (19) is installed at an appropriate position within the apparatus body (48) and into non-contact with the image bearing bodies (11) when the transfer unit (19) is installed at an inappropriate position within the apparatus body (48); and detection devices (14) for applying the transfer voltage to the transfer sections (15) to detect whether the transfer unit (19) is in contact with the image bearing bodies (11).Type: ApplicationFiled: December 23, 2004Publication date: June 30, 2005Inventor: Yasunaga Yamaguchi
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Publication number: 20050111864Abstract: A heating section (1) heats a fixing roller (10). A cooling section (2) cools the interior of a unit or apparatus. A temperature detecting section (3) detects the temperature of the fixing roller (10). A control section (4) controls current conduction to the heating section (1) based on the detected temperature. A conduction cutoff section (5) cuts off current conduction to the heating and cooling sections (1, 2) regardless of conduction control by the control section (4) if the detected temperature exceeds a predetermined temperature.Type: ApplicationFiled: October 28, 2004Publication date: May 26, 2005Inventor: Yasunaga Yamaguchi
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Publication number: 20040264984Abstract: An image-forming apparatus includes an image-forming section, a detection section, and a controller. The image-forming section has an image-bearing body on which an electrostatic latent image is formed and a developing unit that develops the electrostatic latent image. The detection section generates an output indicative of a remaining amount of toner in the developing unit. The controller drives the drive section to cause the image-forming section to move from one position to another, and determines a position of the image-forming section based on the output of the detection section. The detection section is mounted to a toner cartridge within the developing unit. When the image-forming section is moved from one position to another, the detection section receives light reflected by a high-reflectivity area and a low-reflectivity area, thereby detecting the position of the image-forming section.Type: ApplicationFiled: June 24, 2004Publication date: December 30, 2004Applicant: Oki Data CorporationInventors: Makoto Yabuki, Hiroyuki Inoue, Yasunaga Yamaguchi, Kazuaki Arai