Patents by Inventor Ken Ozaki
Ken Ozaki 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: 11809126Abstract: A charging member includes a conductive base material; an elastic layer that is provided on the conductive base material and has a storage elastic modulus G of 5.0 MPa or less at 100 Hz; and a surface layer that is provided on the elastic layer, in which in a Cole-Cole plot obtained by measuring the charging member in a range of 1 MHz to 0.1 Hz by an alternating current impedance method, a resistance component Ra of a capacitive semicircle including 2.5 kHz is 6.3×104? or less.Type: GrantFiled: January 24, 2022Date of Patent: November 7, 2023Assignee: FUJIFILM Business Innovation Corp.Inventors: Yasuhiko Kinuta, Yuki Tagawa, Ken Ozaki, Noboru Hirakawa
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Patent number: 11644762Abstract: An image forming apparatus includes an electrophotographic photoreceptor having a friction coefficient of a surface of 0.8 or less; a charging device including a charging member that is in contact with and charges the surface of the electrophotographic photoreceptor and includes a conductive base material, an elastic layer provided on the conductive base material and having a storage elastic modulus G of 5.0 MPa or less at 100 Hz, and a surface layer provided on the elastic layer; an electrostatic latent image forming device that forms an electrostatic latent image on the charged surface of the electrophotographic photoreceptor; a developing device that develops the electrostatic latent image formed on the surface of the electrophotographic photoreceptor to form a toner image by a developer containing a toner; and a transfer device that transfers the toner image to a surface of a recording medium.Type: GrantFiled: January 25, 2022Date of Patent: May 9, 2023Assignee: FUJIFILM Business Innovation Corp.Inventors: Yasuhiko Kinuta, Yuki Tagawa, Takuya Yamamoto, Ken Ozaki, Noboru Hirakawa
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Publication number: 20230068161Abstract: A charging member includes a conductive base material; an elastic layer that is provided on the conductive base material and has a storage elastic modulus G of 5.0 MPa or less at 100 Hz; and a surface layer that is provided on the elastic layer, in which in a Cole-Cole plot obtained by measuring the charging member in a range of 1 MHz to 0.1 Hz by an alternating current impedance method, a resistance component Ra of a capacitive semicircle including 2.5 kHz is 6.3×104? or less.Type: ApplicationFiled: January 24, 2022Publication date: March 2, 2023Applicant: FUJIFILM Business Innovation Corp.Inventors: Yasuhiko KINUTA, Yuki TAGAWA, Ken OZAKI, Noboru HIRAKAWA
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Publication number: 20230064838Abstract: An image forming apparatus includes an electrophotographic photoreceptor having a friction coefficient of a surface of 0.8 or less; a charging device including a charging member that is in contact with and charges the surface of the electrophotographic photoreceptor and includes a conductive base material, an elastic layer provided on the conductive base material and having a storage elastic modulus G of 5.0 MPa or less at 100 Hz, and a surface layer provided on the elastic layer; an electrostatic latent image forming device that forms an electrostatic latent image on the charged surface of the electrophotographic photoreceptor; a developing device that develops the electrostatic latent image formed on the surface of the electrophotographic photoreceptor to form a toner image by a developer containing a toner; and a transfer device that transfers the toner image to a surface of a recording medium.Type: ApplicationFiled: January 25, 2022Publication date: March 2, 2023Applicant: FUJIFILM Business Innovation Corp.Inventors: Yasuhiko KINUTA, Yuki TAGAWA, Takuya YAMAMOTO, Ken OZAKI, Noboru HIRAKAWA
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Patent number: 10481517Abstract: A cleaning member includes plural bristles including tips that come into contact with an object to be cleaned having a surface including recesses and projections; and a brush base to which the bristles are attached. The bristles each have a non-circular cross-section including a projecting portion that projects toward an outer periphery, at least the projecting portion having a size such that the projecting portion is capable of entering the recesses in the object to be cleaned.Type: GrantFiled: September 26, 2017Date of Patent: November 19, 2019Assignee: FUJI XEROX CO., LTD.Inventors: Jin Iwasaki, Ken Ozaki
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Patent number: 10423092Abstract: A cleaning member includes a first cleaning part formed of a porous material and a second cleaning part formed of a porous material. The first cleaning part includes first projections each having a size that enables the first projections to pass between projecting portions of an object to be cleaned having surface irregularities and to reach the bottom of recessed portions of the object to be cleaned. The second cleaning part includes second projections larger than the first projections. The cleaning member cleans the object to be cleaned by coming into contact with the object to be cleaned.Type: GrantFiled: March 8, 2018Date of Patent: September 24, 2019Assignee: FUJI XEROX CO., LTD.Inventors: Jin Iwasaki, Ken Ozaki
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Publication number: 20190094742Abstract: A cleaning member includes a first cleaning part formed of a porous material and a second cleaning part formed of a porous material. The first cleaning part includes first projections each having a size that enables the first projections to pass between projecting portions of an object to be cleaned having surface irregularities and to reach the bottom of recessed portions of the object to be cleaned. The second cleaning part includes second projections larger than the first projections. The cleaning member cleans the object to be cleaned by coming into contact with the object to be cleaned.Type: ApplicationFiled: March 8, 2018Publication date: March 28, 2019Applicant: FUJI XEROX CO., LTD.Inventors: Jin IWASAKI, Ken OZAKI
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Patent number: 10175624Abstract: An image forming apparatus includes a rotatable image carrier that carries an image, a charging unit having a rotatable charging member that charges the image carrier, a developing unit that supplies a developer including at least toner to the charged image carrier, and a cleaning unit having a cleaning member that cleans a surface of the image carrier. At least when the image forming apparatus is not performing image formation, the charging member on which the toner from the image carrier is carried is caused to rotate at a peripheral velocity different from a peripheral velocity at which the image carrier rotates.Type: GrantFiled: August 11, 2017Date of Patent: January 8, 2019Assignee: FUJI XEROX CO., LTD.Inventors: Jin Iwasaki, Ken Ozaki
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Publication number: 20180275553Abstract: A cleaning member includes plural bristles including tips that come into contact with an object to be cleaned having a surface including recesses and projections; and a brush base to which the bristles are attached. The bristles each have a non-circular cross-section including a projecting portion that projects toward an outer periphery, at least the projecting portion having a size such that the projecting portion is capable of entering the recesses in the object to be cleaned.Type: ApplicationFiled: September 26, 2017Publication date: September 27, 2018Applicant: FUJI XEROX CO., LTD.Inventors: Jin IWASAKI, Ken OZAKI
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Publication number: 20180095392Abstract: An image forming apparatus includes a rotatable image carrier that carries an image, a charging unit having a rotatable charging member that charges the image carrier, a developing unit that supplies a developer including at least toner to the charged image carrier, and a cleaning unit having a cleaning member that cleans a surface of the image carrier. At least when the image forming apparatus is not performing image formation, the charging member on which the toner is carried is caused to rotate at a peripheral velocity different from a peripheral velocity at which the image carrier rotates.Type: ApplicationFiled: August 11, 2017Publication date: April 5, 2018Applicant: FUJI XEROX CO., LTD.Inventors: Jin IWASAKI, Ken OZAKI
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Patent number: 9823599Abstract: A light guide body that extends in a rod shape and guides light incident from an end surface thereof to emit the light from a circumferential surface thereof, the light guide body having a shape such that according to an angle of a circumferential direction around the light guide body, an amount of emitting light in a direction of the angle is different. Additionally, a static elimination device and an image forming apparatus include the light guide body.Type: GrantFiled: July 15, 2016Date of Patent: November 21, 2017Assignee: FUJI XEROX CO., LTD.Inventors: Hirotaka Tanaka, Tsutomu Sugimoto, Jin Iwasaki, Ken Ozaki
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Publication number: 20170199479Abstract: There is provided a light guide body that extends in a rod shape and guides light incident from an end surface thereof to emit the light from a circumferential surface thereof, the light guide body having a shape such that according to an angle of a circumferential direction around the light guide body, an amount of emitting light in a directoin of the angle is different. There is also provided a static elimination device and an image forming apparatus which include the light guide body.Type: ApplicationFiled: July 15, 2016Publication date: July 13, 2017Applicant: FUJI XEROX CO., LTD.Inventors: Hirotaka TANAKA, Tsutomu SUGIMOTO, Jin IWASAKI, Ken OZAKI
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Patent number: 9025993Abstract: A cleaning brush includes bristles that have ends which come into contact with an object to be cleaned having irregularities on a surface thereof, and a brush base on which the bristles are arranged. The bristles include first bristles and second bristles. The first bristles have a thickness too great to reach bottoms of recessed portions of the irregularities on the surface of the object to be cleaned. The second bristles have a thickness small enough to reach the bottoms of the recessed portions of the irregularities on the surface of the object to be cleaned.Type: GrantFiled: November 7, 2013Date of Patent: May 5, 2015Assignee: Fuji Xerox Co., Ltd.Inventors: Jin Iwasaki, Hirotaka Tanaka, Ken Ozaki
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Publication number: 20140363194Abstract: A cleaning brush includes bristles that have ends which come into contact with an object to be cleaned having irregularities on a surface thereof, and a brush base on which the bristles are arranged. The bristles include first bristles and second bristles. The first bristles have a thickness too great to reach bottoms of recessed portions of the irregularities on the surface of the object to be cleaned. The second bristles have a thickness small enough to reach the bottoms of the recessed portions of the irregularities on the surface of the object to be cleaned.Type: ApplicationFiled: November 7, 2013Publication date: December 11, 2014Applicant: Fuji Xerox Co., Ltd.Inventors: Jin IWASAKI, Hirotaka TANAKA, Ken OZAKI
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Patent number: D530347Type: GrantFiled: February 14, 2005Date of Patent: October 17, 2006Assignee: Intirion CorporationInventors: Ken Ozaki, Philip Emma