Patents by Inventor Hirofumi Iida
Hirofumi Iida 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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METHOD OF REGENERATING ACID GAS ADSORPTION DEVICE AND METHOD OF PRODUCING ACID GAS ADSORPTION DEVICE
Publication number: 20240116028Abstract: A method of regenerating an acid gas adsorption device includes the steps of: causing an acid gas to be adsorbed to an acid gas adsorption material by supplying a gas including the acid gas to an acid gas adsorption device so that the gas is brought into contact with an acid gas adsorption layer; causing the acid gas to be desorbed from the acid gas adsorption material; removing the acid gas adsorption layer of the acid gas adsorption device, which has been subjected to the step of causing the acid gas to be adsorbed and the step of causing the acid gas to be desorbed, from a surface of a base material; and forming an acid gas adsorption layer including a porous carrier and an acid gas adsorption material on the surface of the base material from which the acid gas adsorption layer has been removed.Type: ApplicationFiled: December 20, 2023Publication date: April 11, 2024Applicant: NGK INSULATORS, LTD.Inventors: Yusuke OKUMA, Yukinari SHIBAGAKI, Hirofumi KAN, Kazuki IIDA, Atsushi TORII, Kosuke NAKAGAWA -
Patent number: 11951438Abstract: A liquid fuel synthesis system includes a liquid fuel synthesis portion and a sweep gas supply unit. The liquid fuel synthesis portion is partitioned into a non-permeation side space and a permeation side space by the separation membrane. A temperature of the sweep gas flowing into the permeation side space is higher than at least one of a temperature of the raw material gas flowing into the non-permeation side space and a temperature of a first outflow gas flowing out of the non-permeation side space. A temperature of a second outflow gas flowing out of the permeation side space is higher than at least one of the temperature of the raw material gas flowing into the non-permeation side space and the temperature of the first outflow gas flowing out of the non-permeation side space.Type: GrantFiled: December 27, 2022Date of Patent: April 9, 2024Assignee: NGK INSULATORS, LTD.Inventors: Hirofumi Kan, Atsushi Torii, Kazuki Iida
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Patent number: 11126106Abstract: A charging device includes a first charging unit that charges a target unit, which is to be charged, by coming into contact with the target unit and a second charging unit that charges the target unit by coming into contact with the target unit and in which distribution of a contact region in contact with the target unit is different from distribution of a contact region in the first charging unit.Type: GrantFiled: December 9, 2020Date of Patent: September 21, 2021Assignee: FUJIFILM Business Innovation Corp.Inventors: Satoshi Mizoguchi, Hirofumi Iida
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Patent number: 11092909Abstract: A charging device includes: a first charging unit that contacts a unit to be charged to charge the unit to be charged to a first charging potential; and a second charging unit that contacts the unit to be charged on a side upstream of the first charging unit in a direction of movement of the unit to be charged to charge the unit to be charged to a second charging potential that is lower than the first charging potential.Type: GrantFiled: February 18, 2020Date of Patent: August 17, 2021Assignee: FUJIFILM Business Innovation Corp.Inventor: Hirofumi Iida
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Publication number: 20210080850Abstract: A charging device includes: a first charging unit that contacts a unit to be charged to charge the unit to be charged to a first charging potential; and a second charging unit that contacts the unit to be charged on a side upstream of the first charging unit in a direction of movement of the unit to be charged to charge the unit to be charged to a second charging potential that is lower than the first charging potential.Type: ApplicationFiled: February 18, 2020Publication date: March 18, 2021Inventor: Hirofumi IIDA
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Patent number: 10859939Abstract: An image forming apparatus includes an image carrier that carries an image to be transferred onto a recording medium, a charging member in contact with the image carrier, the charging member that charges the image carrier, an erase unit that erases charge on the image carrier, a current detector that detects a current flowing to the charging member; a forming unit that forms a charged region on a surface of the image carrier, and forms an erased region on the surface of the image carrier using the erase unit, and a state acquisition unit that acquires a deterioration state of the charging member based on (i) a first current flowing in response to applying a voltage from the charging member to the erased region and (ii) a second current flowing in response to applying a voltage from the charging member to the charged region.Type: GrantFiled: December 26, 2019Date of Patent: December 8, 2020Assignee: FUJI XEROX CO., LTD.Inventors: Kanji Shintaku, Hiroki Ando, Hirofumi Iida, Keishi Araki, Satoshi Mizoguchi, Hiroki Oka
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Patent number: 10802413Abstract: A charging device includes: a charging member that is rotatable and has a peripheral surface to be in contact with a charging target and to which a voltage is to be applied for charging the charging target; a removing member that includes a core and a removing material spirally wound one to less than two times around the core and rotates and comes into contact with the charging member to remove an unnecessary material from the peripheral surface of the charging member; and a detecting unit that detects a current flowing between the charging member and the removing member.Type: GrantFiled: September 4, 2019Date of Patent: October 13, 2020Assignee: FUJI XEROX CO., LTD.Inventors: Keishi Araki, Hiroki Ando, Hirofumi Iida, Satoshi Mizoguchi, Hiroki Oka
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Publication number: 20200301334Abstract: A charging device includes: a charging member that is rotatable and has a peripheral surface to be in contact with a charging target and to which a voltage is to be applied for charging the charging target; a removing member that includes a core and a removing material spirally wound one to less than two times around the core and rotates and comes into contact with the charging member to remove an unnecessary material from the peripheral surface of the charging member; and a detecting unit that detects a current flowing between the charging member and the removing member.Type: ApplicationFiled: September 4, 2019Publication date: September 24, 2020Applicant: FUJI XEROX CO., LTD.Inventors: Keishi ARAKI, Hiroki ANDO, Hirofumi IIDA, Satoshi MIZOGUCHI, Hiroki OKA
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Patent number: 10620554Abstract: A photoconductor unit includes a photoconductor and an electrode. The photoconductor includes a base member that is cylindrical and has a hardness that decreases with increasing distance from a first end toward a second end in an axial direction, and a photosensitive layer formed on an outer peripheral surface of the base member. The electrode is in contact with an inner peripheral surface of an open end portion of the base member at the first end.Type: GrantFiled: July 29, 2019Date of Patent: April 14, 2020Assignee: FUJI XEROX CO., LTD.Inventors: Keishi Araki, Hiroki Ando, Hirofumi Iida
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Publication number: 20190346778Abstract: A photoconductor unit includes a photoconductor and an electrode. The photoconductor includes a base member that is cylindrical and has a hardness that decreases with increasing distance from a first end toward a second end in an axial direction, and a photosensitive layer formed on an outer peripheral surface of the base member. The electrode is in contact with an inner peripheral surface of an open end portion of the base member at the first end.Type: ApplicationFiled: July 29, 2019Publication date: November 14, 2019Applicant: FUJI XEROX CO., LTD.Inventors: Keishi ARAKI, Hiroki ANDO, Hirofumi IIDA
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Patent number: 10386738Abstract: A photoconductor unit includes a photoconductor and an electrode. The photoconductor includes a base member that is cylindrical and has a hardness that decreases with increasing distance from a first end toward a second end in an axial direction, and a photosensitive layer formed on an outer peripheral surface of the base member. The electrode is in contact with an inner peripheral surface of an open end portion of the base member at the first end.Type: GrantFiled: April 19, 2018Date of Patent: August 20, 2019Assignee: FUJI XEROX CO., LTD.Inventors: Keishi Araki, Hiroki Ando, Hirofumi Iida
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Publication number: 20190107789Abstract: A photoconductor unit includes a photoconductor and an electrode. The photoconductor includes a base member that is cylindrical and has a hardness that decreases with increasing distance from a first end toward a second end in an axial direction, and a photosensitive layer formed on an outer peripheral surface of the base member. The electrode is in contact with an inner peripheral surface of an open end portion of the base member at the first end.Type: ApplicationFiled: April 19, 2018Publication date: April 11, 2019Applicant: FUJI XEROX CO.,LTD.Inventors: Keishi ARAKI, Hiroki ANDO, Hirofumi IIDA
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Publication number: 20190056677Abstract: An image forming apparatus includes an image carrier that holds an electrostatic latent image and a toner image while rotating, a charger that charges the image carrier, an exposure unit that radiates light onto the image carrier to form an electrostatic latent image, a developing unit that develops the electrostatic latent image with toner, a transfer unit that transfers a toner image onto a sheet, a fixing unit that fixes the toner image onto the sheet, a charging-bias power supply that applies charging bias to the charger, a transfer-bias power supply that applies reverse transfer bias to the transfer unit, and a controller that causes the charging-bias power supply to apply the charging bias to the charger, the transfer-bias power supply to apply the reverse transfer bias to the transfer unit, and the exposure unit to radiate the light onto a region of the image carrier.Type: ApplicationFiled: April 9, 2018Publication date: February 21, 2019Applicant: FUJI XEROX CO.,LTD.Inventors: Tomoya OKI, Hirofumi IIDA
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Patent number: 9459550Abstract: An applying device includes an applying member and a contact member. The applying member applies voltage to an image bearing member and has an elastic layer and an endless surface layer. The elastic layer is disposed facing the image bearing member, is rotatable about a rotation axis, and is composed of a foam material. The surface layer surrounds an outer periphery of the elastic layer, is supported by the elastic layer in a non-bonded state, and is rotatable together therewith. The contact member comes into contact with the surface layer at an upstream side, in a rotational direction of the applying member, relative to an imaginary line segment connecting a rotation axis of the image bearing member and the rotation axis of the applying member, so as to apply tension to the surface layer at a contact position between the image bearing member and the applying member.Type: GrantFiled: February 4, 2015Date of Patent: October 4, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Ichiro Kawahara, Hiroki Ando, Mikio Yamaguchi, Hirofumi Iida, Keishi Araki
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Patent number: 9436114Abstract: Provided is an image forming apparatus including an image holder that is provided to be rotatable, and a charging member that includes a charging member main body and a cover member, in which an outer circumferential surface of the cover member is disposed to be in contact with the image holder, and that charges the image holder, wherein a circumferential speed of one member of the rotating image holder and the rotating charging member main body is greater than a circumferential speed of the other member, and wherein the cover member moves to follow a movement of the one member at a contact portion where the cover member and the image holder come into contact with each other, and a portion of the cover member that is positioned on an upstream side of the contact portion is drawn toward a downstream side.Type: GrantFiled: January 22, 2015Date of Patent: September 6, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Ichiro Kawahara, Hiroki Ando, Mikio Yamaguchi, Hirofumi Iida, Keishi Araki
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Patent number: 9411254Abstract: A charging device includes a charging member and a cleaning member. The charging member is driven and rotated while in contact with an outer peripheral surface of an image carrier which rotates, and charges the image carrier. The cleaning member is driven and rotated while in contact with an outer peripheral surface of the charging member and cleans the outer peripheral surface of the charging member. In the charging device, a radius of the charging member is less than a radius of the cleaning member.Type: GrantFiled: September 19, 2013Date of Patent: August 9, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Ichiro Kawahara, Mikio Yamaguchi, Hirofumi Iida
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Patent number: 9405210Abstract: Provided is an image forming apparatus including an image holder that is mounted at a predetermined mount position, a charging member that charges the image holder, a cleaning member that cleans the charging member, a holding member that holds the charging member and the cleaning member, includes a mount section on which the cleaning member is mounted, is urged toward the image holder side, and recedes when the image holder is mounted at the predetermined mount position, and a drop-out prevention section that is disposed at a position facing the mount section which is included in the holding member at a receding position and that prevents the cleaning member from dropping out from the mount section.Type: GrantFiled: February 2, 2015Date of Patent: August 2, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Mikio Yamaguchi, Ichiro Kawahara, Hiroki Ando, Keishi Araki, Hirofumi Iida
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Publication number: 20160041489Abstract: Provided is an image forming apparatus including an image holder that is provided to be rotatable, and a charging member that includes a charging member main body and a cover member, in which an outer circumferential surface of the cover member is disposed to be in contact with the image holder, and that charges the image holder, wherein a circumferential speed of one member of the rotating image holder and the rotating charging member main body is greater than a circumferential speed of the other member, and wherein the cover member moves to follow a movement of the one member at a contact portion where the cover member and the image holder come into contact with each other, and a portion of the cover member that is positioned on an upstream side of the contact portion is drawn toward a downstream side.Type: ApplicationFiled: January 22, 2015Publication date: February 11, 2016Inventors: Ichiro KAWAHARA, Hiroki ANDO, Mikio YAMAGUCHI, Hirofumi IIDA, Keishi ARAKI
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Publication number: 20160018752Abstract: Provided is an image forming apparatus including an image holder that is mounted at a predetermined mount position, a charging member that charges the image holder, a cleaning member that cleans the charging member, a holding member that holds the charging member and the cleaning member, includes a mount section on which the cleaning member is mounted, is urged toward the image holder side, and recedes when the image holder is mounted at the predetermined mount position, and a drop-out prevention section that is disposed at a position facing the mount section which is included in the holding member at a receding position and that prevents the cleaning member from dropping out from the mount section.Type: ApplicationFiled: February 2, 2015Publication date: January 21, 2016Inventors: Mikio YAMAGUCHI, Ichiro KAWAHARA, Hiroki ANDO, Keishi ARAKI, Hirofumi IIDA
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Publication number: 20150261114Abstract: An applying device includes an applying member and a contact member. The applying member applies voltage to an image bearing member and has an elastic layer and an endless surface layer. The elastic layer is disposed facing the image bearing member, is rotatable about a rotation axis, and is composed of a foam material. The surface layer surrounds an outer periphery of the elastic layer, is supported by the elastic layer in a non-bonded state, and is rotatable together therewith. The contact member comes into contact with the surface layer at an upstream side, in a rotational direction of the applying member, relative to an imaginary line segment connecting a rotation axis of the image bearing member and the rotation axis of the applying member, so as to apply tension to the surface layer at a contact position between the image bearing member and the applying member.Type: ApplicationFiled: February 4, 2015Publication date: September 17, 2015Inventors: Ichiro KAWAHARA, Hiroki ANDO, Mikio YAMAGUCHI, Hirofumi IIDA, Keishi ARAKI