Patents by Inventor Fumiyuki HONDA
Fumiyuki HONDA 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: 11144000Abstract: A paper ejection device includes: an ejection portion that ejects sheets of paper; a housing portion that houses the ejected sheets of paper in a sequentially stacked state; and a guiding portion that guides the sheets of paper, before being ejected, to the ejection portion while curving the sheets of paper. The housing portion is adjustable to plural angles including at least an angle at which the ejected sheets of paper are housed while being curved in a direction opposite to a direction in which the sheets of paper have been curved by the guiding portion.Type: GrantFiled: August 7, 2019Date of Patent: October 12, 2021Assignee: FUJIFILM Business Innovation Corp.Inventors: Fumiyuki Honda, Yukihiro Ichiki, Sota Hara, Kenichi Ishikura, Kazuhiro Tobita, Sho Ogawa
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Publication number: 20200257231Abstract: A paper ejection device includes: an ejection portion that ejects sheets of paper; a housing portion that houses the ejected sheets of paper in a sequentially stacked state; and a guiding portion that guides the sheets of paper, before being ejected, to the ejection portion while curving the sheets of paper. The housing portion is adjustable to plural angles including at least an angle at which the ejected sheets of paper are housed while being curved in a direction opposite to a direction in which the sheets of paper have been curved by the guiding portion.Type: ApplicationFiled: August 7, 2019Publication date: August 13, 2020Applicant: FUJI XEROX CO., LTD.Inventors: Fumiyuki HONDA, Yukihiro Ichiki, Sota Hara, Kenichi Ishikura, Kazuhiro Tobita, Sho Ogawa
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Patent number: 10591843Abstract: An image forming apparatus includes an image carrier that holds an image, a developer carrier that holds a developer to be supplied to the image carrier, a transport member that transports the developer in an axial direction of the developer carrier, and a restraint member that restrains the developer, which has scattered as a result of being transported by the transport member, from moving toward the developer carrier.Type: GrantFiled: March 30, 2018Date of Patent: March 17, 2020Assignee: FUJI XEROX CO., LTD.Inventors: Kenta Urayama, Masanori Kato, Tomoyuki Yoshii, Fumiyuki Honda, Shiho Matsuda, Yoshitaka Nakajima, Junichi Uchiyama, Norihiro Tamazawa, Yoshifumi Ozaki
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Patent number: 10527988Abstract: An image forming apparatus includes a transfer unit that transfers a toner image to a recording medium; a non-white toner image forming unit that forms a non-white toner image on the transfer unit by using non-white toner having a non-white color that differs from white; a white toner image forming unit that forms a white toner image on the transfer unit by using white toner that is white in color after the non-white toner image is formed on the transfer unit; and a control unit that controls an amount of the white toner used by the white toner image forming unit to form the white toner image so that the amount of the white toner is smaller when the non-white toner image is formed under the white toner image than when no toner image is formed under the white toner image.Type: GrantFiled: August 23, 2018Date of Patent: January 7, 2020Assignee: FUJI XEROX CO., LTD.Inventors: Fumiyuki Honda, Miho Ikeda, Daisuke Nakai, Aya Kakishima, Shinji Okuyama, Yoshiki Shimodaira
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Publication number: 20190196376Abstract: An image forming apparatus includes a transfer unit that transfers a toner image to a recording medium; a non-white toner image forming unit that forms a non-white toner image on the transfer unit by using non-white toner having a non-white color that differs from white; a white toner image forming unit that forms a white toner image on the transfer unit by using white toner that is white in color after the non-white toner image is formed on the transfer unit; and a control unit that controls an amount of the white toner used by the white toner image forming unit to form the white toner image so that the amount of the white toner is smaller when the non-white toner image is formed under the white toner image than when no toner image is formed under the white toner image.Type: ApplicationFiled: August 23, 2018Publication date: June 27, 2019Applicant: FUJI XEROX CO.,LTD.Inventors: Fumiyuki HONDA, Miho IKEDA, Daisuke NAKAI, Aya KAKISHIMA, Shinji OKUYAMA, Yoshiki SHIMODAIRA
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Publication number: 20190004465Abstract: An image forming apparatus includes: an image carrier that carries an image; a transport-path forming part that forms a transport path for developer used to develop the image carried by the image carrier; a transport member that transports the developer in the transport path; and a concentration detector that detects toner concentration in the developer in the transport path. The transport path includes a first portion and a second portion. Difference in sectional area between the second portion and the transport member in a direction intersecting a direction in which the developer is transported is smaller than difference in sectional area between the first portion and the transport member. The second portion is located downstream of the first portion in the direction in which the developer is transported. The concentration detector is disposed in the second position of the transport path.Type: ApplicationFiled: March 8, 2018Publication date: January 3, 2019Applicant: FUJI XEROX CO., LTD.Inventors: Yoshitaka NAKAJIMA, Yoshifumi OZAKI, Masanori KATO, Fumiyuki HONDA, Tomoyuki YOSHII, Kenta URAYAMA, Junichi UCHIYAMA, Norihiro TAMAZAWA, Shiho MATSUDA
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Publication number: 20180364615Abstract: An image forming apparatus includes an image carrier that holds an image, a developer carrier that holds a developer to be supplied to the image carrier, a transport member that transports the developer in an axial direction of the developer carrier, and a restraint member that restrains the developer, which has scattered as a result of being transported by the transport member, from moving toward the developer carrier.Type: ApplicationFiled: March 30, 2018Publication date: December 20, 2018Applicant: FUJI XEROX CO., LTD.Inventors: Kenta URAYAMA, Masanori KATO, Tomoyuki YOSHII, Fumiyuki HONDA, Shiho MATSUDA, Yoshitaka NAKAJIMA, Junichi UCHIYAMA, Norihiro TAMAZAWA, Yoshifumi OZAKI
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Publication number: 20160313667Abstract: Provided is a developing device, including a developer holding member that is rotatably disposed with opposing a latent image holding member which holds an electrostatic latent image, holds a developer including a toner and a carrier which include a conductive metallic pigment and are charged as normal polarity set in advance, is imparted with a potential of a same polarity as the normal polarity, and develops the electrostatic latent image with the toner, and an opposing member that is disposed with opposing the developer holding member at a position different from a position of the latent image holding member, and is imparted with a potential having a same polarity as the normal polarity, and has an absolute value greater than an absolute value of the potential of the developer holding member.Type: ApplicationFiled: October 28, 2015Publication date: October 27, 2016Inventors: Tomoyuki YOSHII, Yasuaki WATANABE, Jun ABE, Toshihiro KANEMATSU, Takashi OCHI, Kenta URAYAMA, Shinji OKUYAMA, Fumiyuki HONDA
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Patent number: 9454104Abstract: A developing device includes a developing sleeve and a regulation portion. The developing sleeve includes a magnetism generating portion to which magnetic poles are attached. The developing sleeve holds a developer on an outer circumferential surface. The regulation portion includes a magnetic plate. A first segment connecting a peak position of the magnetic pole disposed at a position facing the magnetic plate and an axial center of the developing sleeve has an angle, with respect to a second segment connecting the magnetic plate and the axial center, equal to or less than 7 degrees on a downstream side in a rotation direction of the developing sleeve and equal to or less than 6 degrees on an upstream side in the rotation direction. An angle of a half value width of the magnetic pole is equal to or greater than 41 degrees to equal to or less than 52 degrees.Type: GrantFiled: January 13, 2016Date of Patent: September 27, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Kenta Urayama, Yasuaki Watanabe, Jun Abe, Tomoyuki Yoshii, Takashi Ochi, Shinji Okuyama, Fumiyuki Honda, Shiho Matsuda
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Publication number: 20160266519Abstract: A developing device includes a container in which developer is contained; and a developer carrier disposed in the container, the developer carrier including a magnet member having magnetic poles, and a rotation member that covers an outer circumference of the magnet member and is rotatably supported, the developer carrier developing a latent image formed on an image carrier into a visible image with the developer held on a surface of the rotation member as an effect of the magnet member. The rotation member has projections and recesses formed in the surface, which satisfy y?1.875×x+11.25, where y is an average depth of the projections and recesses when a lowest position of the recesses is assumed to be 0 and a highest position of the projections is assumed to be 100, and x is a ten-point average roughness of the projections and recesses.Type: ApplicationFiled: September 10, 2015Publication date: September 15, 2016Applicant: FUJI XEROX CO., LTD.Inventors: Shinji OKUYAMA, Yasuaki WATANABE, Jun ABE, Tomoyuki YOSHII, Toshihiro KANEMATSU, Takashi OCHI, Kenta URAYAMA, Fumiyuki HONDA
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Patent number: 9417582Abstract: An image forming apparatus includes an image forming section and a controller. The image forming section transfers a toner image to a transfer target and includes plural developing units. The plural developing units include a first developing unit and at least one second developing unit. The plural developing units each include an image holding body and a developing roller. The image holding body has an outer circumferential surface and is rotated. The controller controls the image forming section so that, when a low-area-coverage portion and a high-area-coverage portion are disposed adjacent to each other and are formed by the first developing unit, a correction toner image is superposed on a boundary portion, where the low-area-coverage portion and the high-area-coverage portion are adjacent to each other, by the at least one second developing unit.Type: GrantFiled: July 31, 2015Date of Patent: August 16, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Kenta Urayama, Yasuaki Watanabe, Jun Abe, Tomoyuki Yoshii, Toshihiro Kanematsu, Takashi Ochi, Shinji Okuyama, Fumiyuki Honda
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Patent number: 9383683Abstract: A transport mechanism includes: a container that stores a specific developer; a transport body that transports the developer in an axial direction of a shaft about which the transport body rotates in the container while stirring the developer; a bearing that supports the transport body such that the transport body is rotatable about the shaft; and a restricting portion that has a substantially annular shape and a maximum magnetic force of about 20 mT or greater and about 50 mT or smaller and restricts the transportation of the developer past the restricting portion by surrounding the shaft, the restricting portion being provided nearer to a side on which the transport body transports the developer than the bearing in the axial direction of the shaft.Type: GrantFiled: January 30, 2015Date of Patent: July 5, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Fumiyuki Honda, Takashi Ochi, Yasuaki Watanabe, Tomoyuki Yoshii, Jun Abe, Toshihiro Kanematsu, Kenta Urayama, Shinji Okuyama
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Publication number: 20160085180Abstract: A transport mechanism includes: a container that stores a specific developer; a transport body that transports the developer in an axial direction of a shaft about which the transport body rotates in the container while stirring the developer; a bearing that supports the transport body such that the transport body is rotatable about the shaft; and a restricting portion that has a substantially annular shape and a maximum magnetic force of about 20 mT or greater and about 50 mT or smaller and restricts the transportation of the developer past the restricting portion by surrounding the shaft, the restricting portion being provided nearer to a side on which the transport body transports the developer than the bearing in the axial direction of the shaft.Type: ApplicationFiled: January 30, 2015Publication date: March 24, 2016Inventors: Fumiyuki HONDA, Takashi OCHI, Yasuaki WATANABE, Tomoyuki YOSHII, Jun ABE, Toshihiro KANEMATSU, Kenta URAYAMA, Shinji OKUYAMA