Patents by Inventor Aya Tamura
Aya Tamura 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: 8942581Abstract: An image forming apparatus is configured to perform a collecting operation for moving the attached matter held on a holding roller onto the photosensitive drum and collecting the attached matter by a collecting unit. A bias control unit for controlling a bias applied to the holding roller is configured to: during an image forming operation, apply a first bias for moving the matter onto the holding roller; and during the collecting operation, apply a second bias for moving the attached matter onto the photosensitive drum. A speed control unit is configured to: control the holding roller to rotate at a first rotating speed during the image forming operation; and in a progress of the collecting operation, control the holding roller to rotate at a second rotating speed for a first period after the bias control unit applies the second bias to the holding roller.Type: GrantFiled: September 20, 2012Date of Patent: January 27, 2015Assignee: Brother Kogyo Kabushiki KaishaInventor: Aya Tamura
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Patent number: 8867964Abstract: A first rotary body is configured to rotate by a drive force input from an external source and has a first outer peripheral surface. A second rotary body has a second outer peripheral surface and is configured to rotate by following a rotation of the first rotary body through a friction generated between the first outer peripheral surface and the second outer peripheral surface. A first gear is configured to rotate together with the first rotary body. A second gear is configured to rotate together with the second rotary body and is directory engaged with the first gear. The first gear has a first pitch circle and the second gear has a second pitch circle. A radius of the first pitch circle is smaller than a radius of the first rotary body, and a radius of the second pitch circle is larger than a radius of the second rotary body.Type: GrantFiled: September 24, 2012Date of Patent: October 21, 2014Assignee: Brother Kogyo Kabushiki KaishaInventors: Junichi Hashimoto, Koji Abe, Masatoshi Shiraki, Yasushi Okabe, Aya Tamura
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Publication number: 20130108289Abstract: An image forming apparatus is configured to perform a collecting operation for moving the attached matter held on a holding roller onto the photosensitive drum and collecting the attached matter by a collecting unit. A bias control unit for controlling a bias applied to the holding roller is configured to: during an image forming operation, apply a first bias for moving the matter onto the holding roller; and during the collecting operation, apply a second bias for moving the attached matter onto the photosensitive drum. A speed control unit is configured to: control the holding roller to rotate at a first rotating speed during the image forming operation; and in a progress of the collecting operation, control the holding roller to rotate at a second rotating speed for a first period after the bias control unit applies the second bias to the holding roller.Type: ApplicationFiled: September 20, 2012Publication date: May 2, 2013Inventor: Aya Tamura
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Publication number: 20130084103Abstract: A first rotary body is configured to rotate by a drive force input from an external source and has a first outer peripheral surface. A second rotary body is configured to rotate by following a rotation of the first rotary body through the friction generated between the first outer peripheral surface and the second outer peripheral surface. A first gear is configured to rotate together with the first rotary body. A second gear is configured to rotate together with the second rotary body and is directory engaged with the first gear. The first gear had a first pitch circle and the second gear has a second pitch circle. A radius of the first pitch circle is smaller than the radius of the first rotary body, and a radius of the second pitch circle is larger than the radius of the second rotary body.Type: ApplicationFiled: September 24, 2012Publication date: April 4, 2013Inventors: Junichi HASHIMOTO, Koji ABE, Masatoshi SHIRAKI, Yasushi OKABE, Aya TAMURA
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Patent number: 8165501Abstract: There is provided an image forming apparatus including a main body, a drawer, an image forming unit, a belt unit and a cleaning unit. The drawer is movably supported to the main body and configured to be pulled out from an interior of the main body. The image forming unit is supported on the drawer and has photosensitive drums arrayed in line in a direction for forming an image on a recording medium. The belt unit is disposed in opposition to each of the photosensitive drums and extends in the direction. The cleaning unit is fixed to the drawer and is disposed at a side the same as the image forming unit with respect to the belt unit, such that the cleaning unit is pulled out integrally with the image forming unit from the main body.Type: GrantFiled: January 13, 2010Date of Patent: April 24, 2012Assignee: Brother Kogyo Kabushiki KaishaInventors: Aya Tamura, Shougo Sato, Susumu Sakuma
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Patent number: 8000629Abstract: An image forming device includes a process cartridge, a wall section, and a flow restrictor. The process cartridge includes a photosensitive drum, a charger, and a frame. The charger is disposed spaced away from the photosensitive drum for charging the photosensitive drum. The frame is formed with a first opening at a position opposite to the photosensitive drum with respect to the charger. The frame is also formed with a first vent hole for ventilation of a space defined by the frame. The first vent hole is positioned upstream of the first opening and downstream of the image transfer position of the photosensitive drum in the rotational direction of the photosensitive drum. The wall section is positioned in direct confrontation with the first opening. The flow restrictor restricts air flow and is provided between the frame and the wall section.Type: GrantFiled: October 21, 2009Date of Patent: August 16, 2011Assignee: Brother Kogyo Kabushiki KaishaInventor: Aya Tamura
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Publication number: 20100178078Abstract: There is provided an image forming apparatus including a main body, a drawer, an image forming unit, a belt unit and a cleaning unit. The drawer is movably supported to the main body and configured to be pulled out from an interior of the main body. The image forming unit is supported on the drawer and has a plurality of photosensitive drums arrayed in line in a first direction for forming an image on a recording medium. The belt unit disposed in opposition to each of the plurality of photosensitive drums and extends in the first direction. The cleaning unit is fixed to the drawer and is disposed at a side the same as the image forming unit with respect to the belt unit, whereby the cleaning unit is pulled out integrally with the image forming unit from the main body.Type: ApplicationFiled: January 13, 2010Publication date: July 15, 2010Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Aya Tamura, Shougo Sato, Susumu Sakuma
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Publication number: 20100129111Abstract: An image forming device includes a process cartridge, a wall section, and a flow restrictor. The process cartridge includes a photosensitive drum, a charger, and a frame. The charger is disposed spaced away from the photosensitive drum for charging the photosensitive drum. The frame is formed with a first opening at a position opposite to the photosensitive drum with respect to the charger. The frame is also formed with a first vent hole for ventilation of a space defined by the frame. The first vent hole is positioned upstream of the first opening and downstream of the image transfer position of the photosensitive drum in the rotational direction of the photosensitive drum. The wall section is positioned in direct confrontation with the first opening. The flow restrictor restricts air flow and is provided between the frame and the wall section.Type: ApplicationFiled: October 21, 2009Publication date: May 27, 2010Applicant: Brother Kogyo Kabushiki KaishaInventor: Aya Tamura