Patents by Inventor Akihiro Noguchi
Akihiro Noguchi 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: 8874009Abstract: A developing device includes a developer carrying member for carrying developer containing a non-magnetic toner and a magnetic carrier to a position where the developer carrying member is opposed to an image bearing member, and a developing container including a first chamber for accommodating the developer to be supplied to the developer carrying member, a second chamber provided below the first chamber, and an opening for circulating the developer between the first chamber and the second chamber. In addition, a first feeding member and a second feeding member are rotatably provided in the first chamber and the second chamber, respectively, for stirring and feeding the developer.Type: GrantFiled: October 19, 2011Date of Patent: October 28, 2014Assignee: Canon Kabushiki KaishaInventors: Akihiro Noguchi, Katsuya Nose, Asuna Fukamachi
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Publication number: 20140255047Abstract: A controller which controls a replenishing operation of the first replenishing device based on the first sensor, and controls a replenishing operation of the second replenishing device based on the second sensor; wherein the controller prohibits the replenishing operation of the first replenishing device when the developer concentration in the first replenishing device reaches a first upper limit set to the first developing device; wherein the controller prohibits the replenishing operation of the second replenishing device when the developer concentration in the second replenishing device reaches a second upper limit set to the second developing device; and wherein the controller corrects the second upper limit based on the developer concentration in the second developing device when the developer concentration in the first developing device reaches the first upper limit.Type: ApplicationFiled: February 18, 2014Publication date: September 11, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Fumitake Hirobe, Shigeru Tanaka, Akihiro Noguchi
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Patent number: 8744294Abstract: A representative configuration of an image forming apparatus has a plurality of developing devices, each of which develops an electrostatic latent image formed on a photosensitive drum into a toner image using developer of plural colors. The image forming apparatus includes a density sensor which detects the amount of toner of the toner image for each color. In a case where it is determined that the amount of toner of any color departs from a predetermined range based on the detection result of the density sensor, development conditions of the rest of the developing devices, other than the developing device departing from the predetermined range, are changed such that the image densities developed by the respective developing devices are equal to each other.Type: GrantFiled: January 20, 2012Date of Patent: June 3, 2014Assignee: Canon Kabushiki KaishaInventors: Akihiro Noguchi, Fumitake Hirobe, Shigeru Tanaka
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Patent number: 8744303Abstract: A magnetic flux density formed on a sleeve surface by a magnetic seal member on a downstream side in a conveyance direction of a developer agitation and conveyance member is greater than a magnetic flux density formed on the sleeve surface by a magnetic seal member on an upstream side in the developer conveyance direction.Type: GrantFiled: November 1, 2012Date of Patent: June 3, 2014Assignee: Canon Kabushiki KaishaInventor: Akihiro Noguchi
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Patent number: 8725044Abstract: A developing device includes a developing container unit configured to contain and circulate a developer, and a plurality of developer carrying members each for carrying on its surface the developer for developing an electrostatic latent image on an image bearing member. The developer carrying member providing a largest difference in driving torque measured before and after being coated with a toner on its surface thereof is provided with a plurality of circumferentially spaced grooves, and the remaining developer carrying member has a blast-treated surface.Type: GrantFiled: January 12, 2012Date of Patent: May 13, 2014Assignee: Canon Kabushiki KaishaInventors: Katsuya Nose, Akihiro Noguchi, Asuna Fukamachi
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Patent number: 8564488Abstract: To receiving satellite broadcasting waves, it is provided an antenna comprising: a first element connected to a first feed point of a hot side; a ground element connected to a second feed point of a ground side; a second element; and a third element. The second element is arranged substantially in parallel with the first element so as to be coupled to the first element. The third element is arranged to define a predetermined angle with the first element, with a vertex of the predetermined angle set to a vicinity of the first feed point and the second feed point. The first element has a linear shape so as to have an inductive property at a resonance frequency. The third element has a linear shape so as to have a capacitive property at the resonance frequency. The third element is connected to a ground-side end portion of the second element.Type: GrantFiled: December 31, 2009Date of Patent: October 22, 2013Assignee: Central Glass Company, LimitedInventors: Takao Okui, Akihiro Noguchi
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Patent number: 8548361Abstract: A developing device includes a developer carrying member for carrying a developer; a first feeding portion for supplying the developer to the developer carrying member while feeding the developer along the developer carrying member; a second feeding portion, communicating with the first feeding portion at end portions thereof, for feeding the developer in a direction opposite to a developer feeding direction of the first feeding portion while collecting the developer from the developer carrying member; and a partition wall portion for partitioning the first and second feeding portions. The partition wall portion includes an opposing portion opposing the developer carrying member with a spacing. A surface roughness of at least the opposing portion is larger than that of the developer carrying member.Type: GrantFiled: October 17, 2011Date of Patent: October 1, 2013Assignee: Canon Kabushiki KaishaInventors: Akihiro Noguchi, Katsuya Nose, Kyosuke Takahashi
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Patent number: 8543041Abstract: The specification discloses a developing device comprises a first developer bearing member configured to bear a developer including a toner and a carrier, and to convey the developer to a first developing region facing an image bearing member, so as to develop an electrostatic latent image formed onto the image bearing member and a second developer bearing member configured to bear a developer transferred from the first developer bearing member, and to develop an electrostatic latent image formed on the image bearing member, by conveying a developer to a second developing region facing the image bearing member and a cover unit configured to shield a route toward the image bearing member from a mutual gap position between the first developer bearing member and the second developer bearing member.Type: GrantFiled: October 13, 2011Date of Patent: September 24, 2013Assignee: Canon Kabushiki KaishaInventors: Katsuya Nose, Akihiro Noguchi, Kyosuke Takahashi
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Patent number: 8421691Abstract: A vehicular glass antenna is provided. The antenna includes an AM broadcast wave receiving antenna having a plurality of horizontal strips and at least two vertical strips with an AM feed point between the vertical strips on the uppermost horizontal strip or through a line extending from the uppermost horizontal strip, and two FM broadcast wave receiving antennas extending from two FM feed points provided above uppermost horizontal strip of the AM antenna along a part of an outermost portion of the AM broadcast wave receiving antenna. The FM antennas extend in opposite clockwise and counterclockwise directions. The FM antennas have a substantially U-shape surrounding the ends of the AM antenna horizontal strips on their respective sides, and include a second horizontal strip adjacent to the horizontal strips of the AM antenna to achieve capacitive coupling.Type: GrantFiled: January 26, 2009Date of Patent: April 16, 2013Assignee: Central Glass Company, LimitedInventors: Akihiro Noguchi, Yasuo Takaki, Yuji Katada
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Publication number: 20130016998Abstract: A developing device includes a developer carrying member for carrying a developer; a first feeding portion for supplying the developer to the developer carrying member while feeding the developer along the developer carrying member; a second feeding portion, communicating with the first feeding portion at end portions thereof, for feeding the developer in a direction opposite to a developer feeding direction of the first feeding portion while collecting the developer from the developer carrying member; and a partition wall portion for partitioning the first and second feeding portions. The partition wall portion includes an opposing portion opposing the developer carrying member with a spacing. A surface roughness of at least the opposing portion is larger than that of the developer carrying member.Type: ApplicationFiled: October 17, 2011Publication date: January 17, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Akihiro Noguchi, Katsuya Nose, Kyosuke Takahashi
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Patent number: 8330663Abstract: There is provided an antenna for a vehicle which is formed on a space above defogging heater strips of a rear window glass of the vehicle.Type: GrantFiled: September 16, 2008Date of Patent: December 11, 2012Assignee: Central Glass Company, LimitedInventors: Akihiro Noguchi, Yasuo Takaki, Yuji Katada
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Publication number: 20120207496Abstract: A representative configuration of an image forming apparatus according to the invention is provided. The image forming apparatus has a plurality of developing devices which develops an electrostatic latent image formed on a photosensitive drum into a toner image using developer of plural colors. The image forming apparatus includes a density sensor which detects the amount of toner of the toner image for each color. In a case where it is determined that the amount of toner of any color departs from a predetermined range based on the detection result of the density sensor, a development condition of the rest developing devices other than the developing device departing from the predetermined range is changed such that the image densities developed by the respective developing devices are equal to each other.Type: ApplicationFiled: January 20, 2012Publication date: August 16, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Akihiro Noguchi, Fumitake Hirobe, Shigeru Tanaka
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Publication number: 20120195647Abstract: A developing device includes a plurality of developer carrying members each for carrying at its surface a developer for developing an electrostatic latent image on an image bearing member. Of the plurality of developer carrying members, the developer carrying member requiring a largest driving torque resulting from the developer has a surface which has a plurality of grooves extending in parallel in a direction having a component of an axial direction of the developer carrying member at a predetermined interval, and wherein another developer carrying member has a blasted surface.Type: ApplicationFiled: January 12, 2012Publication date: August 2, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Katsuya Nose, Akihiro Noguchi, Asuna Fukamachi
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Publication number: 20120163878Abstract: A developing device includes a developing sleeve for carrying a developer containing a magnetic carrier and a non magnetic toner; a magnet, provided in the sleeve and including a plurality of magnetic poles disposed along a circumferential direction of the sleeve, for carrying the developer on the sleeve; and a regulating member, provided opposed to the sleeve with a predetermined spacing in a region in which the magnetic poles different in polarity are adjacent to each other, for regulating an amount of the developer carried on the sleeve. The magnetic poles are disposed so that a circumferential direction component of a magnetic force acting on the magnetic carrier contacting at least a part of an upstream regulating surface of the regulating member with respect to the circumferential direction of rotation of the sleeve is opposite from the circumferential direction of the rotation.Type: ApplicationFiled: December 15, 2011Publication date: June 28, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Akihiro Noguchi, Satoru Stephen Yamauchi
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Publication number: 20120148313Abstract: The specification discloses a developing device comprises a first developer bearing member configured to bear a developer including a toner and a carrier, and to convey the developer to a first developing region facing an image bearing member, so as to develop an electrostatic latent image formed onto the image bearing member and a second developer bearing member configured to bear a developer transferred from the first developer bearing member, and to develop an electrostatic latent image formed on the image bearing member, by conveying a developer to a second developing region facing the image bearing member and a cover unit configured to shield a route toward the image bearing member from a mutual gap position between the first developer bearing member and the second developer bearing member.Type: ApplicationFiled: October 13, 2011Publication date: June 14, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Katsuya Nose, Akihiro Noguchi, Kyosuke Takahashi
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Publication number: 20120099900Abstract: A developing device comprising a developer carrying member for carrying the developer containing non-magnetic toner and magnetic carrier to a position where said developer carrying member is opposed to an image bearing member; a developing container including a first chamber for accommodating a developer to be supplied to said developer carrying member, a second chamber provided below said first chamber, and a pair of transferring portions for circulating the developer between said first chamber and said second chamber; a first feeding member and a second feeding member, rotatably provided, in said first chamber and said second chamber, respectively, for stirring and feeding the developer; and a magnetic member provided at least on said first feeding member, wherein said magnetic member is provided in a region opposing at least one of said transferring portions where the developer is scooped from said second chamber into said first chamber.Type: ApplicationFiled: October 19, 2011Publication date: April 26, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Akihiro Noguchi, Katsuya Nose, Asuna Fukamachi
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Patent number: 8092199Abstract: Provided is a scroll compressor that is capable of three-dimensional compression, ensuring a required wrap strength while increasing a shoulder section height of a spiral wrap, and facilitating wrap processing. The scroll compressor includes shoulder sections at an end surface and a bottom surface of spiral wraps of a paired fixed scroll member and revolving scroll member and configured to be capable of three-dimensional compression in a circumferential direction and a height direction of the spiral wraps by setting a spiral wrap height of the spiral wraps further toward the outside of the shoulder sections greater than the spiral wrap height of the inward side, and wherein the shoulder sections provided on the end surface and the bottom surface at the spiral wrap are constructed of a plurality of shoulder sections, and the heights of the shoulder sections are set to heights in which base stresses at the shoulder sections are substantially equal.Type: GrantFiled: September 9, 2008Date of Patent: January 10, 2012Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Hisao Mizuno, Takahide Ito, Akihiro Noguchi, Toshiyuki Shikanai, Takashi Goto, Yuichi Muroi
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Publication number: 20110043419Abstract: There is provided an antenna for a vehicle which is formed on a space above defogging heater strips of a rear window glass of the vehicle.Type: ApplicationFiled: September 16, 2008Publication date: February 24, 2011Applicant: Central Glass Company, LimitedInventors: Akihiro Noguchi, Yasuo Takaki, Yuji Katada
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Publication number: 20110032163Abstract: A vehicular glass antenna which is provided in an upper blank space of defogging heater strips of a rear window glass of the vehicle, the vehicular glass antenna includes: an AM broadcast wave receiving antenna including; a plurality of horizontal strips arranged at intervals, at least two vertical strips which are orthogonal to the horizontal strips, and which are apart from each other, and an AM feed point located between the vertical strips, on uppermost one of the horizontal strips or through an extension line extending from a portion of the uppermost one of the horizontal strips, and two FM broadcast wave receiving antennas extending, respectively, from two FM feed points provided above the uppermost one of the horizontal strips of the AM broadcast wave receiving antenna on left and right sides of the AM feed point, along a part of an outermost portion of the AM broadcast wave receiving antenna, the FM broadcast wave receiving antennas extending, respectively, in opposite directions of a clockwise directType: ApplicationFiled: January 26, 2009Publication date: February 10, 2011Applicant: CENTRAL GLASS COMPANY LIMITEDInventors: Akihiro Noguchi, Yasuo Takaki, Yuji Katada
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Patent number: 7881638Abstract: A developing apparatus includes a developer container for containing a developer; a first screw, provided in a first screw, provided in a first chamber in the developer container, for feeding the developer; a second screw, provided in a second chamber in the developer container, for feeding the developer in a direction opposite from that of the first screw; an opening through which the developer is moved between the first chamber and the second chamber; and a developer carrying member, provided in the first chamber, for carrying the developer to effect development of an electrostatic image. At least one of said first screw and said second screw has a multiple thread screw portion having a number n of threads and a thread pitch P.Type: GrantFiled: March 26, 2007Date of Patent: February 1, 2011Assignee: Canon Kabushiki KaishaInventors: Akihiro Noguchi, Fumitake Hirobe, Tadayoshi Nishihama, Akinori Tanaka