Patents by Inventor Keiko Fujita
Keiko Fujita 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: 20240094674Abstract: A duct unit that is coupled to a fan, the duct unit includes a first duct portion including a first joint portion, a second duct portion including a second joint portion that faces the first joint portion, and a seal member having elasticity. the first duct portion and the second duct portion are configured to form an airflow path by being joined to each other. The first joint portion includes a first surface and a projection portion projecting from the first surface. The projection portion includes a second surface in contact with the second joint portion of the second duct portion. The seal member is arranged between the first surface of the first joint portion and the second joint portion so as to come into contact with the first surface of the first joint portion and the second joint portion.Type: ApplicationFiled: September 8, 2023Publication date: March 21, 2024Inventor: KEIKO FUJITA
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Patent number: 11877101Abstract: An image display apparatus according to an embodiment of the present technology includes a light source section, a first sensor, a second sensor, and a light source control section. The light source section is capable of emitting emitted light. The first sensor is capable of detecting a state of the emitted light. The second sensor is capable of detecting a temperature of the light source section. The light source control section is capable of controlling the light source section according to a first detection result of detection performed by the first sensor, and a second detection result of detection performed by the second sensor.Type: GrantFiled: October 17, 2018Date of Patent: January 16, 2024Assignee: SONY CORPORATIONInventor: Keiko Fujita
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Publication number: 20230315010Abstract: An image forming apparatus includes an image forming unit, a fan, a duct including an air intake port, an air discharge port, and a body portion having a tubular shape and forming an air passage through which air taken in through the air intake port is flown to the air discharge port, the body portion including a holed wall portion to which a plurality of through holes are formed, the plurality of through holes being passed through between an inner surface, forming the air passage, of the holed wall portion and an outer surface, that is on an opposite side from the inner surface, of the holed wall portion, and a noise absorbing member attached to the outer surface of the holed wall portion so as to cover the plurality of through holes, the noise absorbing member having a noise absorbing property.Type: ApplicationFiled: March 17, 2023Publication date: October 5, 2023Inventors: HIROSHI NOJIMA, KEIKO FUJITA
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Publication number: 20230251602Abstract: An image forming apparatus includes a photosensitive member, a transfer unit having a transfer belt, a primary transfer roller, a secondary transfer inner roller below the primary transfer roller in a vertical direction, and a stretching roller, a secondary transfer outer roller, a support unit, and an air duct provided in the transfer unit. The secondary transfer outer roller faces the secondary transfer inner roller via the transfer belt and forms a nip portion for secondarily transferring a toner image on the transfer belt to a sheet. The air duct is located downstream of the nip portion in a sheet conveyance direction and below a portion of the transfer belt stretched between the secondary transfer inner roller and the stretching roller in the vertical direction. The air duct includes an air intake port and moves with the transfer unit with movement of the transfer unit from the support unit.Type: ApplicationFiled: January 31, 2023Publication date: August 10, 2023Inventors: KEIKO FUJITA, KENTARO YAMANA, SHIGEO DOI, YUYA YOKOBORI, HIROSHI NOJIMA
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Patent number: 11720058Abstract: An image forming apparatus includes a first housing inside an image forming unit, a second housing that includes a fixing unit, a conveyance belt provided in the first housing to convey a sheet, first and second intake fans, and first and second duct units. The first intake fan takes in air to suction the sheet to an outer peripheral surface of the conveyance belt. The first duct unit provided in the first housing forms an air path for exhausting air from the first intake fan. The second intake fan provided in the second housing takes in air near the fixing unit. The second duct unit provided in the second housing passes air flowing in from the first duct unit and the air taken in by the second intake fan. The second duct unit includes an exhaust port for exhausting air outside and a filter through which the exhausted air passes.Type: GrantFiled: December 7, 2021Date of Patent: August 8, 2023Assignee: Canon Kabushiki KaishaInventors: Hiroshi Nojima, Keiko Fujita
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Patent number: 11669045Abstract: An image forming apparatus includes a first duct unit, a first air blowing fan, a second duct unit, a filter, and a second air blowing fan. The first duct unit includes a power source substrate, a first intake portion, and a first exhaust portion. The first air blowing fan forms an airflow from the first intake portion to the first exhaust portion. The second duct unit includes a second intake portion to take air in from inside the image forming apparatus, and includes a second exhaust portion to exhaust the air taken in from the second intake portion to outside of the image forming apparatus. The filter is disposed between the second intake portion and the second exhaust portion in an airflow from the second intake portion to the second exhaust portion. The second air blowing fan forms the airflow from the second intake portion to the second exhaust portion.Type: GrantFiled: December 7, 2021Date of Patent: June 6, 2023Assignee: Canon Kabushiki KaishaInventors: Keiko Fujita, Takuya Matsumura
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Publication number: 20220187763Abstract: An image forming apparatus includes a first housing inside an image forming unit, a second housing that includes a fixing unit, a conveyance belt provided in the first housing to convey a sheet, first and second intake fans, and first and second duct units. The first intake fan takes in air to suction the sheet to an outer peripheral surface of the conveyance belt. The first duct unit provided in the first housing forms an air path for exhausting air from the first intake fan. The second intake fan provided in the second housing takes in air near the fixing unit. The second duct unit provided in the second housing passes air flowing in from the first duct unit and the air taken in by the second intake fan. The second duct unit includes an exhaust port for exhausting air outside and a filter through which the exhausted air passes.Type: ApplicationFiled: December 7, 2021Publication date: June 16, 2022Inventors: Hiroshi Nojima, Keiko Fujita
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Publication number: 20220187762Abstract: An image forming apparatus includes a first duct unit, a first air blowing fan, a second duct unit, a filter, and a second air blowing fan. The first duct unit includes a power source substrate, a first intake portion, and a first exhaust portion. The first air blowing fan forms an airflow from the first intake portion to the first exhaust portion. The second duct unit includes a second intake portion to take air in from inside the image forming apparatus, and includes a second exhaust portion to exhaust the air taken in from the second intake portion to outside of the image forming apparatus. The filter is disposed between the second intake portion and the second exhaust portion in an airflow from the second intake portion to the second exhaust portion. The second air blowing fan forms the airflow from the second intake portion to the second exhaust portion.Type: ApplicationFiled: December 7, 2021Publication date: June 16, 2022Inventors: Keiko Fujita, Takuya Matsumura
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Patent number: 11099471Abstract: An image display apparatus according to an embodiment of the present technology includes a light source section, a first sensor, a second sensor, and a light source control section. The light source section emits emitted light. The first sensor is arranged in a first region and is capable of detecting a state of the emitted light. The second sensor is arranged in a second region and is capable of detecting the state of the emitted light, the second region being less influenced by dust than the first region. The light source control section is capable of controlling the light source section according to a first detection result of detection performed by the first sensor, and a second detection result of detection performed by the second sensor.Type: GrantFiled: September 19, 2018Date of Patent: August 24, 2021Assignee: SONY CORPORATIONInventor: Keiko Fujita
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Publication number: 20200404230Abstract: An image display apparatus according to an embodiment of the present technology includes a light source section, a first sensor, a second sensor, and a light source control section. The light source section is capable of emitting emitted light. The first sensor is capable of detecting a state of the emitted light. The second sensor is capable of detecting a temperature of the light source section. The light source control section is capable of controlling the light source section according to a first detection result of detection performed by the first sensor, and a second detection result of detection performed by the second sensor.Type: ApplicationFiled: October 17, 2018Publication date: December 24, 2020Applicant: SONY CORPORATIONInventor: Keiko FUJITA
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Publication number: 20200371419Abstract: An image display apparatus according to an embodiment of the present technology includes a light source section, a first sensor, a second sensor, and a light source control section. The light source section emits emitted light. The first sensor is arranged in a first region and is capable of detecting a state of the emitted light. The second sensor is arranged in a second region and is capable of detecting the state of the emitted light, the second region being less influenced by dust than the first region. The light source control section is capable of controlling the light source section according to a first detection result of detection performed by the first sensor, and a second detection result of detection performed by the second sensor.Type: ApplicationFiled: September 19, 2018Publication date: November 26, 2020Applicant: SONY CORPORATIONInventor: Keiko FUJITA
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Patent number: 10538401Abstract: A sheet feeding apparatus includes a feed roller configured to feed a sheet in a feeding direction, a drive unit to drive the feed roller, a separation roller driven by the drive unit through a torque limiter in a direction against the feeding direction, and a pair of conveyance rollers. In addition, a control portion executes a first control mode in which a first sheet is conveyed and a second control mode in which a second sheet having a lower basis weight than that of the first sheet is conveyed. The control portion stops the drive unit with the sheet nipped at a separation nip portion and at a conveyance nip portion in each of the first and second control modes, and a timing when the drive unit is stopped by the control portion in the second control mode is earlier than a timing when the drive unit is stopped by the control portion in the first control mode.Type: GrantFiled: August 5, 2016Date of Patent: January 21, 2020Assignee: CANON KABUSHIKI KAISHAInventor: Keiko Fujita
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Patent number: 10040652Abstract: A sheet feeding apparatus includes a supporting portion and a feeding unit. The supporting portion supports a sheet and is capable of being drawn out from and being attached to an apparatus body. The feeding unit is provided in the apparatus body and includes a feeding portion, a conveyance portion, a separation unit, and a guide member. The feeding portion feeds the sheet supported by the supporting portion. The conveyance portion conveys the sheet. The separation unit forms a separation nip with the conveyance portion and is detachable from the feeding unit. The guide member includes a guide surface and a lower surface. The guide surface guides the sheet to the separation nip. The lower surface is provided below the guide surface and includes an exposing portion exposing at least a part of the separation unit.Type: GrantFiled: August 24, 2016Date of Patent: August 7, 2018Assignee: CANON KABUSHIKI KAISHAInventor: Keiko Fujita
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Patent number: 9994405Abstract: A sheet conveying apparatus includes a pair of first conveying rollers, a pair of second conveying rollers provided at a downstream of the pair of first conveying rollers in a conveying direction of a sheet, a loop being formed in the sheet when a head of the sheet conveyed by the pair of first conveying rollers butts against the pair of second conveying rollers, and a controller which executes a first control mode in which the sheet is conveyed by the pair of first conveying rollers and the pair of second conveying rollers without dissolving the loop formed in the sheet, or a second control mode in which the loop formed in the sheet is dissolved, and the sheet nipped by the pair of first conveying rollers and the pair of second conveying rollers is conveyed.Type: GrantFiled: March 2, 2017Date of Patent: June 12, 2018Assignee: Canon Kabushiki KaishaInventors: Toshifumi Itabashi, Keiko Fujita
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Publication number: 20170261905Abstract: A sheet conveying apparatus includes a pair of first conveying rollers, a pair of second conveying rollers provided at a downstream of the pair of first conveying rollers in a conveying direction of a sheet, a loop being formed in the sheet when a head of the sheet conveyed by the pair of first conveying rollers butts against the pair of second conveying rollers, and a controller which executes a first control mode in which the sheet is conveyed by the pair of first conveying rollers and the pair of second conveying rollers without dissolving the loop formed in the sheet, or a second control mode in which the loop formed in the sheet is dissolved, and the sheet nipped by the pair of first conveying rollers and the pair of second conveying rollers is conveyed.Type: ApplicationFiled: March 2, 2017Publication date: September 14, 2017Inventors: Toshifumi Itabashi, Keiko Fujita
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Publication number: 20170068199Abstract: A sheet feeding apparatus includes a feed roller, a separation roller configured to form a separation nip portion with the feed roller, and a drive unit configured to drive the feed roller and the separation roller. A control portion to control the drive unit stops the drive unit with a sheet nipped at both the separation nip portion and a conveyance nip portion provided in a conveyance portion disposed downstream of the separation nip portion. In the case where a second sheet having lower basis weight than that of a first sheet is conveyed, the control portion set a stop timing of the drive unit to a timing later than that in the case where the first sheet is conveyed.Type: ApplicationFiled: August 5, 2016Publication date: March 9, 2017Inventor: Keiko Fujita
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Publication number: 20170060066Abstract: A sheet feeding apparatus includes a supporting portion and a feeding unit. The supporting portion supports a sheet and is capable of being drawn out from and being attached to an apparatus body. The feeding unit is provided in the apparatus body and includes a feeding portion, a conveyance portion, a separation unit, and a guide member. The feeding portion feeds the sheet supported by the supporting portion. The conveyance portion conveys the sheet. The separation unit forms a separation nip with the conveyance portion and is detachable from the feeding unit. The guide member includes a guide surface and a lower surface. The guide surface guides the sheet to the separation nip. The lower surface is provided below the guide surface and includes an exposing portion exposing at least a part of the separation unit.Type: ApplicationFiled: August 24, 2016Publication date: March 2, 2017Inventor: Keiko Fujita
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Patent number: 9372445Abstract: In a constitution provided with no primary-transfer roller, in order to ensure a contact length between each of photosensitive drums and an intermediary transfer belt, the photosensitive drums are disposed with projecting amounts of a plurality of levels with respect to a stretching surface of the intermediary transfer belt, and therefore an apparatus is liable to be increased in a height direction. In order to avoid this, four image bearing members are arranged, along the intermediary transfer belt, with the same projection amount with respect to the stretching surface of the intermediary transfer belt, and a depressing member for depressing a belt surface between two central image bearing members toward an outside is provided.Type: GrantFiled: October 3, 2014Date of Patent: June 21, 2016Assignee: Canon Kabushiki KaishaInventors: Hideki Mori, Keiko Fujita, Hiroshi Saito, Hitoshi Kubota, Tohru Nakaegawa
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Patent number: 9256200Abstract: An image forming apparatus includes a fixing unit heating an image formed on a recording medium and disposed along a conveying path conveying the recording medium. The conveying path includes a first guide plate, discharge guide plate portions and second guide plate portion as conveyance guide plates guiding the recording medium. Partition walls and vertical walls are disposed at positions facing these guide plate portions. The air current guide portion guides air taken in from intake ports through an intake guide portion between the respective guide plate portions and each walls.Type: GrantFiled: May 28, 2014Date of Patent: February 9, 2016Assignee: Canon Kabushiki KaishaInventors: Keiko Fujita, Hideki Mori, Hiroshi Saito, Hitoshi Kubota
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Patent number: RE46875Abstract: A sheet processing apparatus includes an aligning member and a shift conveying unit. The aligning member is movable in a width direction perpendicular to a sheet conveying direction and presses a sheet stack loaded on a sheet processing tray so as to align the sheet stack in the width direction. The unit is provided on the upstream side of the tray and conveys a sheet, shifting the sheet in the width direction. Being shifted by the unit, sheets are loaded at first and second loading positions on the tray. When sheets are loaded at the first loading position, the aligning member is moved to a first standby position corresponding to the first loading position in advance. When sheets are loaded at the second loading position, the aligning member is moved in advance to a second standby position corresponding to the second loading position.Type: GrantFiled: March 16, 2016Date of Patent: May 29, 2018Assignee: Canon Kabushiki KaishaInventors: Keiko Fujita, Daisaku Kamiya, Hideki Kushida, Yasuo Fukatsu, Takako Hanada, Takayuki Fujii, Toshiyuki Miyake, Kenichi Hayashi