Patents by Inventor Osamu Anan
Osamu Anan 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: 20130064568Abstract: A cartridge detachably mountable to a main assembly of an image forming apparatus having a main assembly electric contact includes: a contact member for receiving pressure by the main assembly electric contact, wherein the contact member has a first surface as a contact portion for receiving the pressure by the main assembly electric contact and has a second surface bent from the first surface toward a side opposite from a side where the main assembly electric contact is provided; a holding member for holding the contact member; a portion to be limited provided at an end of the second surface; and a limiting portion, provided on the holding member, for limiting movement of the portion to be limited.Type: ApplicationFiled: September 7, 2012Publication date: March 14, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Akihiro Fujiwara, Osamu Anan
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Publication number: 20130058675Abstract: A cartridge includes: a rotatable member, including a metal shaft, supported movably in an axial direction of the metal shaft; an electroconductive member, supported movably in the axial direction in contact to an end surface of the metal shaft in one end side of the metal shaft, for constituting an electroconductive path for electrically connecting the metal shaft and a contact member provided in an image forming apparatus main assembly; an urging portion for urging the metal shaft via the electroconductive member in a direction from the one end side to another end side of the metal shaft; and an abutting portion for positioning the rotatable member by being abutted by the metal shaft. The electroconductive member includes a contact portion to the end surface of the metal shaft, at a portion other than a rotation center portion of the metal shaft at the end surface.Type: ApplicationFiled: August 29, 2012Publication date: March 7, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Osamu Anan, Akihiro Fujiwara
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Patent number: 8160477Abstract: A process cartridge and an image forming apparatus in which a charging roller is separated from a photosensitive drum by a predetermined distance and in which the separation between the charging roller and the photosensitive drum is released at the time of use without involving an increase in the burden on the user and erroneous releasing of the separation by user is prevented prior to use. The process cartridge, which is detachably mountable to the apparatus main body having an acting portion, includes a process cartridge frame, a locking portion locked with the frame to separate the charging roller from the photosensitive drum, a separation holding member having an acted portion which penetrates the frame and on which the acting portion can act, and a protruding portion provided on the frame and protruding beyond the acted portion at the position where the separation holding member is locked with the frame.Type: GrantFiled: December 15, 2008Date of Patent: April 17, 2012Assignee: Canon Kabushiki KaishaInventors: Osamu Anan, Yasufumi Yoshino
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Patent number: 8095036Abstract: A member for performing separation holding of a developing roller of a process cartridge is provided at a position opposite from a photosensitive drum with respect to a swing center. A detachably mountable protective cover is mounted to the process cartridge and a projection of the protective cover is inserted between the photosensitive drum and a developing device frame which supports the developing roller. The projection of the protective cover is inserted in a non-contact state with the photosensitive drum and the developing device frame.Type: GrantFiled: May 26, 2009Date of Patent: January 10, 2012Assignee: Canon Kabushiki KaishaInventors: Yasufumi Yoshino, Osamu Anan
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Publication number: 20110229196Abstract: A process cartridge includes a drum; a rotatable roller including a first shaft end portion and a second shaft end portion; a bearing member for rotatably supporting ends of a shaft of the rotatable roller; an urging member for urging the rotatable roller via the bearing member in a drum contact direction; a cartridge frame for rotatably supporting the drum and for movably holding the rotatable roller via the bearing member; a movable guide member movable in an axial direction of the shaft of the rotatable roller and including a first contact portion; and a fixed guide member including a second contact portion. At least one of the first contact portion and the first shaft end portion has an inclined surface inclined with respect to the axial direction of the rotatable roller, and at least one of the second contact portion and the second shaft end portion has an inclined surface inclined with respect to the axial direction of the rotatable roller.Type: ApplicationFiled: March 8, 2011Publication date: September 22, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Tachio Kawai, Osamu Anan, Yasunori Toriyama
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Publication number: 20110142487Abstract: A process cartridge detachably mountable to a main assembly of an image forming apparatus includes an image-bearing member on which an electrostatic image is to be formed; a first frame; a bearing member, detachably mountable to the first frame, for rotatably supporting the image-bearing member; a first hole provided in the bearing member; a first wall, provided on the first frame, in which a second hole is provided; a second frame for rotatably supporting a developer carrying member on which a developer for developing the electrostatic image is to be carried; a second wall, provided on the second frame, in which a third hole is provided; and a connecting member including a shaft portion penetrating through the first hole, the second hole and the third hole and tightly engaging in the second hole, and including a flange portion, provided at an end portion of the shaft portion, for preventing the bearing member from being detached from the first frame.Type: ApplicationFiled: November 30, 2010Publication date: June 16, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Osamu Anan, Koji Yamaguchi, Kazuhiko Kanno
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Patent number: 7840155Abstract: A developing device facing an image carrier and including a developer carrier, a developer flying control member, and a development-noise control member. The developing device develops an electrostatic image formed on the image carrier by causing the developer to fly from the developer carrier to the image carrier upon an application of an alternating-current bias to the developer carrier. Noise produced by the development-noise control member vibrated by an oscillating electric field of the alternating-current bias is smaller than a noise produced by the developer flying control member vibrated by the oscillating electric field.Type: GrantFiled: April 14, 2009Date of Patent: November 23, 2010Assignee: Canon Kabushiki KaishaInventors: Shigeo Miyabe, Masaaki Sato, Osamu Anan
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Patent number: 7720412Abstract: A process cartridge in which before use, the separation of a predetermined distance between a charging roller and a photosensitive drum can be maintained, and in use, the separation state of the charging roller can be released without increasing the burden on a user. The process cartridge includes a charging roller separation member moveable between the first position to hold the separation of the charging roller from the photosensitive drum and the second position to abut the charging roller on the photosensitive drum. One of a photosensitive member unit and a developing unit includes a hook portion holding the separation member in the first position, and the other includes a hook portion that releases the separation member from the hook portion to move the separation member to the second position when the developing unit is pivoted.Type: GrantFiled: December 6, 2007Date of Patent: May 18, 2010Assignee: Canon Kabushiki KaishaInventors: Osamu Anan, Akinobu Hirayama
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Publication number: 20090297219Abstract: A member for performing separation holding of a developing roller of a process cartridge is provided at a position opposite from a photosensitive drum with respect to a swing center. A detachably mountable protective cover is mounted to the process cartridge and a projection of the protective cover is inserted between the photosensitive drum and a developing device frame which supports the developing roller. The projection of the protective cover is inserted in a non-contact state with the photosensitive drum and the developing device frame.Type: ApplicationFiled: May 26, 2009Publication date: December 3, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Yasufumi Yoshino, Osamu Anan
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Publication number: 20090297212Abstract: A process cartridge and an image forming apparatus in which a charging roller is separated from a photosensitive drum by a predetermined distance and in which the separation between the charging roller and the photosensitive drum is released at the time of use without involving an increase in the burden on the user and erroneous releasing of the separation by user is prevented prior to use. The process cartridge, which is detachably mountable to the apparatus main body having an acting portion, includes a process cartridge frame, a locking portion locked with the frame to separate the charging roller from the photosensitive drum, a separation holding member having an acted portion which penetrates the frame and on which the acting portion can act, and a protruding portion provided on the frame and protruding beyond the acted portion at the position where the separation holding member is locked with the frame.Type: ApplicationFiled: December 15, 2008Publication date: December 3, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Osamu Anan, Yasufumi Yoshino
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Patent number: 7580659Abstract: A developing device facing an image carrier and including a developer carrier, a developer flying control member, and a development-noise control member. The developing device develops an electrostatic image formed on the image carrier by causing the developer to fly from the developer carrier to the image carrier upon an application of an alternating-current bias to the developer carrier. Noise produced by the development-noise control member vibrated by an oscillating electric field of the alternating-current bias is smaller than a noise produced by the developer flying control member vibrated by the oscillating electric field.Type: GrantFiled: October 27, 2006Date of Patent: August 25, 2009Assignee: Canon Kabushiki KaishaInventors: Shigeo Miyabe, Masaaki Sato, Osamu Anan
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Publication number: 20090202277Abstract: A developing device facing an image carrier and including a developer carrier, a developer flying control member, and a development-noise control member. The developing device develops an electrostatic image formed on the image carrier by causing the developer to fly from the developer carrier to the image carrier upon an application of an alternating-current bias to the developer carrier. Noise produced by the development-noise control member vibrated by an oscillating electric field of the alternating-current bias is smaller than a noise produced by the developer flying control member vibrated by the oscillating electric field.Type: ApplicationFiled: April 14, 2009Publication date: August 13, 2009Applicant: Canon Kabushiki KaishaInventors: Shigeo Miyabe, Masaaki Sato, Osamu Anan
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Patent number: 7483647Abstract: A cartridge mounted on an electrophotographic image forming apparatus includes a molded resin complex in which a first resin molded product and a second resin molded product are engaged with each other so as to be separable. The first resin molded product is obtained by molding a first resin pervious to laser light, and the second resin molded product is obtained by molding a second resin absorptive to laser light. The first resin molded product and the second resin molded product are engaged with each other so as to be separable, by one or more protrusions of the second resin molded product which is formed by applying laser light from the first resin molded product side while placing the first resin molded product and the second resin molded product either in a close state or in a contact state.Type: GrantFiled: December 22, 2006Date of Patent: January 27, 2009Assignee: Canon Kabushiki KaishaInventors: Akira Suzuki, Osamu Anan, Jun Miyamoto
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Publication number: 20080138109Abstract: A process cartridge in which before use, the separation of a predetermined distance between a charging roller and a photosensitive drum can be maintained, and in use, the separation state of the charging roller can be released without increasing the burden of a user. The process cartridge includes a charging roller separation member moveable between the first position to hold the separation of the charging roller from the photosensitive drum and the second position to abut the charging roller on the photosensitive drum. One of a photosensitive member unit and a developing unit includes a hook portion holding the separation member in the first position, and the other includes a hook portion that releases the separation member from the hook portion to move the separation member to the second position when the developing unit is pivoted.Type: ApplicationFiled: December 6, 2007Publication date: June 12, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Osamu Anan, Akinobu Hirayama
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Patent number: 7366439Abstract: A method of remanufacturing a cartridge detachably mountable in an electrophotographic image-forming apparatus body and composed of styrene-based resin compositions at least in part, characterized by including the steps of: (1) dividing the cartridge into at least two parts; and (2) bonding at least one of the divided parts with another one of the divided parts and/or a component other than the divided parts by use of a terpene solvent.Type: GrantFiled: June 13, 2005Date of Patent: April 29, 2008Assignee: Canon Kabushiki KaishaInventors: Osamu Anan, Akira Suzuki
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Patent number: D631088Type: GrantFiled: November 24, 2008Date of Patent: January 18, 2011Assignee: Canon Kabushiki KaishaInventors: Kazuo Chadani, Tatsuya Suzuki, Yasufumi Yoshino, Masaaki Sato, Hideki Kakuta, Osamu Anan, Tetsuo Furukawa, Hideki Nagae, Hiroyuki Munetsugu
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Patent number: D631089Type: GrantFiled: November 24, 2008Date of Patent: January 18, 2011Assignee: Canon Kabushiki KaishaInventors: Kazuo Chadani, Tatsuya Suzuki, Yasufumi Yoshino, Masaaki Sato, Hideki Kakuta, Osamu Anan, Tetsuo Furukawa, Hideki Nagae, Hiroyuki Munetsugu
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Patent number: D631090Type: GrantFiled: November 24, 2008Date of Patent: January 18, 2011Assignee: Canon Kabushiki KaishaInventors: Kazuo Chadani, Tatsuya Suzuki, Yasufumi Yoshino, Masaaki Sato, Hideki Kakuta, Osamu Anan, Tetsuo Furukawa, Hideki Nagae, Hiroyuki Munetsugu
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Patent number: D631091Type: GrantFiled: November 24, 2008Date of Patent: January 18, 2011Assignee: Canon Kabushiki KaishaInventors: Kazuo Chadani, Tatsuya Suzuki, Yasufumi Yoshino, Masaaki Sato, Hideki Kakuta, Osamu Anan, Tetsuo Furukawa, Hideki Nagae, Hiroyuki Munetsugu
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Patent number: D633137Type: GrantFiled: November 24, 2008Date of Patent: February 22, 2011Assignee: Canon Kabushiki KaishaInventors: Kazuo Chadani, Tatsuya Suzuki, Yasufumi Yoshino, Masaaki Sato, Hideki Kakuta, Osamu Anan, Tetsuo Furukawa, Hideki Nagae, Hiroyuki Munetsugu