Patents by Inventor Fumito Nonaka
Fumito Nonaka 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: 20160357142Abstract: A cartridge detachably mountable to a main assembly of an image forming apparatus, includes: a rotatable member; a blade member contacted to the rotatable member; a frame, formed of a resin material, for supporting the blade member; and a seal member provided on the frame to be contacted to a portion of the blade member, opposite from a portion where the blade member is contacted to the rotatable member, in each of one end side and anther end side of the blade member with respect to an axial direction of the rotatable member, wherein the seal member is formed on the frame by injection molding for sealing a gap between the blade member and the frame.Type: ApplicationFiled: August 18, 2016Publication date: December 8, 2016Inventors: Nobuharu Hoshi, Fumito Nonaka
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Patent number: 9377716Abstract: A unit for use with an image forming apparatus includes: a frame; a developer accommodating portion; a sheet member, contact to a rotatable member and provided on the frame along a longitudinal direction of the rotatable member; a first end portion seal member for preventing, at a longitudinal end portion, the developer from leaking out from between the frame and the rotatable member; and a second end portion seal member for preventing the developer from leaking out from among the first end portion seal member, the sheet member and the frame. The second end portion seal member is formed by injecting, on the frame, a resin material having an elastic modulus smaller than an elastic modulus of the frame so as to contact with the first end portion seal member and the sheet member.Type: GrantFiled: August 18, 2015Date of Patent: June 28, 2016Assignee: Canon Kabushiki KaishaInventors: Toshiteru Yamasaki, Kohichi Takahashi, Fumito Nonaka, Yuuki Nakamura, Naoki Hayashi, Toshiki Fujino
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Patent number: 9348264Abstract: A cleaning unit usable with an image forming apparatus includes a cleaning blade, supported by a frame and including a free end contactable to an image bearing drum, for removing a developer from the drum; a first seal provided between the frame and the blade by injection molding into the frame adjacent to a longitudinal end portion of the blade, the first seal being effective to prevent developer leakage; and a second seal provided between the drum and the frame in contact with the free end of the blade adjacent to the longitudinal end portion, wherein the first seal includes a seal portion contacting the blade, and a seat supporting the second seal, the seat being deformable to move the second seal to urge the second seal to the free end of the blade when the drum is mounted to the frame.Type: GrantFiled: July 29, 2015Date of Patent: May 24, 2016Assignee: Canon Kabushiki KaishaInventors: Noritomo Yamaguchi, Yuichi Fukui, Hiroyuki Munetsugu, Toshiki Fujino, Tetsuya Numata, Fumito Nonaka
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Patent number: 9280135Abstract: A process cartridge for an image forming apparatus includes a photosensitive drum; a cleaning member having a blade contacted to end drum; a sheet contacted to end drum; an end seal provided at an end of a frame and contacted to the drum, end blade and end sheet; and a sealing mold, integrally molded at the end portion of end frame by injection molding, end sealing mold including a first seal provided between end cleaning member and end frame and extending in a direction crossing with the longitudinal direction, a second seal provided between the end seal and end frame and continuously molded with end first seal, and a third seal provided between end sheet and end frame and continuously molded with end second seal.Type: GrantFiled: September 30, 2013Date of Patent: March 8, 2016Assignee: Canon Kabushiki KaishaInventor: Fumito Nonaka
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Publication number: 20160062310Abstract: A cartridge includes a cartridge frame member including a developer accommodation portion, an image bearing member rotatably provided to the cartridge frame member, an end sealing provided to the cartridge frame member and abutting on an end of the image bearing member in a longitudinal direction, a cleaning unit for acting on the image bearing member, a sealing portion integrally provided with the cartridge frame member and abut on an end of the cleaning unit in the longitudinal direction, a sheet member provided along the longitudinal direction and abut on the image bearing member at an end of the sheet member in a direction that crosses the longitudinal direction, and a fixing portion for fixing the sheet member and the cartridge frame member. The sealing portion and the fixing portion are integrally formed with the cartridge frame member.Type: ApplicationFiled: August 27, 2015Publication date: March 3, 2016Inventors: Shogo Satomura, Fumito Nonaka
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Publication number: 20150355576Abstract: A unit for use with an image forming apparatus includes: a frame; a developer accommodating portion; a sheet member, contact to a rotatable member and provided on the frame along a longitudinal direction of the rotatable member; a first end portion seal member for preventing, at a longitudinal end portion, the developer from leaking out from between the frame and the rotatable member; and a second end portion seal member for preventing the developer from leaking out from among the first end portion seal member, the sheet member and the frame. The second end portion seal member is formed by injecting, on the frame, a resin material having an elastic modulus smaller than an elastic modulus of the frame so as to contact with the first end portion seal member and the sheet member.Type: ApplicationFiled: August 18, 2015Publication date: December 10, 2015Inventors: Toshiteru Yamasaki, Kohichi Takahashi, Fumito Nonaka, Yuuki Nakamura, Naoki Hayashi, Toshiki Fujino
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Publication number: 20150331364Abstract: A cleaning unit usable with an image forming apparatus includes a cleaning blade, supported by a frame and including a free end contactable to an image bearing drum, for removing a developer from the drum; a first seal provided between the frame and the blade by injection molding into the frame adjacent to a longitudinal end portion of the blade, the first seal being effective to prevent developer leakage; and a second seal provided between the drum and the frame in contact with the free end of the blade adjacent to the longitudinal end portion, wherein the first seal includes a seal portion contacting the blade, and a seat supporting the second seal, the seat being deformable to move the second seal to urge the second seal to the free end of the blade when the drum is mounted to the frame.Type: ApplicationFiled: July 29, 2015Publication date: November 19, 2015Inventors: Noritomo Yamaguchi, Yuichi Fukui, Hiroyuki Munetsugu, Toshiki Fujino, Tetsuya Numata, Fumito Nonaka
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Patent number: 9188940Abstract: A developing device for use with an image forming apparatus, includes: a developer carrying member for carrying a developer; a developer regulating member for regulating an amount of the developer carried on the developer carrying member; a first frame for supporting the developer regulating member; a fixing member for fixing the developer regulating member to the first frame; a second frame mounted to the first frame; and a molded resin portion formed by injecting a melted resin material into a space defined by the first and second frames. The molded resin portion is engaged with a first limiting portion provided as a part of the fixing member and projected into the space and is engaged with a second limiting portion provided as a part of the second frame to connect the first and second frame.Type: GrantFiled: July 23, 2014Date of Patent: November 17, 2015Assignee: Canon Kabushiki KaishaInventors: Yuichi Fukui, Fumito Nonaka, Tachio Kawai, Shunsuke Uratani
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Patent number: 9146526Abstract: A cleaning unit usable with an image forming apparatus includes a cleaning blade, supported by a frame and including a free end contactable to an image bearing drum, for removing a developer from the drum; a first seal provided between the frame and the blade by injection molding into the frame adjacent to a longitudinal end portion of the blade, the first seal being effective to prevent developer leakage; and a second seal provided between the drum and the frame in contact with the free end of the blade adjacent to the longitudinal end portion, wherein the first seal includes a seal portion contacting the blade, and a seat supporting the second seal, the seat being deformable to move the second seal to urge the second seal to the free end of the blade when the drum is mounted to the frame.Type: GrantFiled: September 6, 2013Date of Patent: September 29, 2015Assignee: Canon Kabushiki KaishaInventors: Noritomo Yamaguchi, Yuichi Fukui, Hiroyuki Munetsugu, Toshiki Fujino, Tetsuya Numata, Fumito Nonaka
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Patent number: 9128417Abstract: A unit for use with an image forming apparatus includes: a frame; a developer accommodating portion; a sheet member, contact to a rotatable member and provided on the frame along a longitudinal direction of the rotatable member; a first end portion seal member for preventing, at a longitudinal end portion, the developer from leaking out from between the frame and the rotatable member; and a second end portion seal member for preventing the developer from leaking out from among the first end portion seal member, the sheet member and the frame. The second end portion seal member is formed by injecting, on the frame, a resin material having an elastic modulus smaller than an elastic modulus of the frame so as to contact with the first end portion seal member and the sheet member.Type: GrantFiled: September 5, 2013Date of Patent: September 8, 2015Assignee: Canon Kabushiki KaishaInventors: Toshiteru Yamasaki, Kohichi Takahashi, Fumito Nonaka, Yuuki Nakamura, Naoki Hayashi, Toshiki Fujino
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Patent number: 9069291Abstract: A cartridge detachably mountable to a main assembly of an image forming apparatus. The cartridge includes a rotatable member. A blade member, including a rubber portion, is contacted to the rotatable member, with a metal plate portion supported to the blade member. A frame, formed of a resin material, supports the blade member. A seal member, extending in a direction crossing an axial direction of the rotatable member so as to contact the rotatable member, is provided on the frame to be contacted to a portion of the rubber portion and the metal plate portion of the blade member. The seal member is formed on the frame by injection molding for sealing a gap between the blade member and the frame.Type: GrantFiled: November 8, 2012Date of Patent: June 30, 2015Assignee: Canon Kabushiki KaishaInventors: Nobuharu Hoshi, Fumito Nonaka
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Patent number: 9002233Abstract: A unit includes an injection path provided on a frame member and through which a molten resin flows when a seal portion is formed through injection molding, an injection port provided at one end side of the injection path in an injection direction in which the molten resin flows through the injection path and through which the molten resin is injected into the frame member, and a discharge port which is provided at another end side of the injection path in the injection direction and through which the molten resin having passed through the injection path is discharged to a seal forming portion.Type: GrantFiled: October 17, 2013Date of Patent: April 7, 2015Assignee: Canon Kabushiki KaishaInventors: Toshiteru Yamasaki, Fumito Nonaka, Akira Suzuki
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Publication number: 20150078779Abstract: A cartridge detachably mountable to a main assembly of an image forming apparatus, includes: a rotatable member; a blade member contacted to the rotatable member; a frame, formed of a resin material, for supporting the blade member; and a seal member provided on the frame to be contacted to a portion of the blade member, opposite from a portion where the blade member is contacted to the rotatable member, in each of one end side and anther end side of the blade member with respect to an axial direction of the rotatable member, wherein the seal member is formed on the frame by injection molding for sealing a gap between the blade member and the frame.Type: ApplicationFiled: November 20, 2014Publication date: March 19, 2015Inventors: Nobuharu Hoshi, Fumito Nonaka
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Patent number: 8909096Abstract: A developing device for use with an image forming apparatus, includes: a developer carrying member for carrying a developer; a developer regulating member for regulating an amount of the developer carried on the developer carrying member; a first frame for supporting the developer regulating member; a fixing member for fixing the developer regulating member to the first frame; a second frame mounted to the first frame; and a molded resin portion formed by injecting a melted resin material into a space defined by the first and second frames. The molded resin portion is engaged with a first limiting portion provided as a part of the fixing member and projected into the space and is engaged with a second limiting portion provided as a part of the second frame to connect the first and second frame.Type: GrantFiled: December 19, 2012Date of Patent: December 9, 2014Assignee: Canon Kabushiki KaishaInventors: Yuichi Fukui, Fumito Nonaka, Tachio Kawai, Shunsuke Uratani
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Publication number: 20140334844Abstract: A developing device for use with an image forming apparatus, includes: a developer carrying member for carrying a developer; a developer regulating member for regulating an amount of the developer carried on the developer carrying member; a first frame for supporting the developer regulating member; a fixing member for fixing the developer regulating member to the first frame; a second frame mounted to the first frame; and a molded resin portion formed by injecting a melted resin material into a space defined by the first and second frames. The molded resin portion is engaged with a first limiting portion provided as a part of the fixing member and projected into the space and is engaged with a second limiting portion provided as a part of the second frame to connect the first and second frame.Type: ApplicationFiled: July 23, 2014Publication date: November 13, 2014Inventors: Yuichi Fukui, Fumito Nonaka, Tachio Kawai, Shunsuke Uratani
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Patent number: 8879954Abstract: A cartridge detachably mountable to a main assembly of an image forming apparatus includes: a frame; a member-to-be-energized; a fixing member, having electroconductivity, for fixing the member-to-be-energized to the frame, wherein the fixing member is electrically connected with the member-to-be-energized; a recessed portion, provided on the frame, where a part of the fixing member enters; and a molded resin portion formed by injecting a melted electroconductive resin material into the recessed portion, wherein when the cartridge is mounted in the main assembly, the molded resin portion electrically connects the fixing member with an energizing portion provided in the main assembly.Type: GrantFiled: December 6, 2012Date of Patent: November 4, 2014Assignee: Canon Kabushiki KaishaInventors: Fumito Nonaka, Yuichi Fukui, Tachio Kawai, Shunsuke Uratani
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Publication number: 20140119770Abstract: A unit includes an injection path provided on a frame member and through which a molten resin flows when a seal portion is formed through injection molding, an injection port provided at one end side of the injection path in an injection direction in which the molten resin flows through the injection path and through which the molten resin is injected into the frame member, and a discharge port which is provided at another end side of the injection path in the injection direction and through which the molten resin having passed through the injection path is discharged to a seal forming portion.Type: ApplicationFiled: October 17, 2013Publication date: May 1, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Toshiteru Yamasaki, Fumito Nonaka, Akira Suzuki
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Publication number: 20140093270Abstract: A process cartridge for an image forming apparatus includes a photosensitive drum; a cleaning member having a blade contacted to end drum; a sheet contacted to end drum; an end seal provided at an end of a frame and contacted to the drum, end blade and end sheet; and a sealing mold, integrally molded at the end portion of end frame by injection molding, end sealing mold including a first seal provided between end cleaning member and end frame and extending in a direction crossing with the longitudinal direction, a second seal provided between the end seal and end frame and continuously molded with end first seal, and a third seal provided between end sheet and end frame and continuously molded with end second seal.Type: ApplicationFiled: September 30, 2013Publication date: April 3, 2014Applicant: CANON KABUSHIKI KAISHAInventor: Fumito Nonaka
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Publication number: 20140072326Abstract: A cleaning unit usable with an image forming apparatus includes a cleaning blade, supported by a frame and including a free end contactable to an image bearing drum, for removing a developer from the drum; a first seal provided between the frame and the blade by injection molding into the frame adjacent to a longitudinal end portion of the blade, the first seal being effective to prevent developer leakage; and a second seal provided between the drum and the frame in contact with the free end of the blade adjacent to the longitudinal end portion, wherein the first seal includes a seal portion contacting the blade, and a seat supporting the second seal, the seat being deformable to move the second seal to urge the second seal to the free end of the blade when the drum is mounted to the frame.Type: ApplicationFiled: September 6, 2013Publication date: March 13, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Noritomo Yamaguchi, Yuichi Fukui, Hiroyuki Munetsugu, Toshiki Fujino, Tetsuya Numata, Fumito Nonaka
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Publication number: 20140064776Abstract: A unit for use with an image forming apparatus includes: a frame; a developer accommodating portion; a sheet member, contact to a rotatable member and provided on the frame along a longitudinal direction of the rotatable member; a first end portion seal member for preventing, at a longitudinal end portion, the developer from leaking out from between the frame and the rotatable member; and a second end portion seal member for preventing the developer from leaking out from among the first end portion seal member, the sheet member and the frame. The second end portion seal member is formed by injecting, on the frame, a resin material having an elastic modulus smaller than an elastic modulus of the frame so as to contact with the first end portion seal member and the sheet member.Type: ApplicationFiled: September 5, 2013Publication date: March 6, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Toshiteru Yamasaki, Kohichi Takahashi, Fumito Nonaka, Yuuki Nakamura, Naoki Hayashi, Toshiki Fujino