Patents by Inventor Tou Matsunaga
Tou Matsunaga 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: 8652019Abstract: A fixing member according to the present invention is such one as is brought into pressure contact with a conveyed sheet to fix an image onto the sheet. The fixing member comprises a cylindrical or annular base material, a rubber layer provided so as to cover an outer surface of the base material and having elasticity, and an outer layer provided so as to cover an outer surface of the rubber layer for aiding release of the sheet. A siloxane content in a central section of the rubber layer is less than twice the siloxane content in an end portion of the rubber layer with respect to a width direction vertical to a circumferential direction on the base material.Type: GrantFiled: February 9, 2011Date of Patent: February 18, 2014Assignee: Konica Minolta Business Technologies, Inc.Inventors: Noboru Oomoto, Shoichi Yoshikawa, Shigeru Tashiro, Atsuhiko Shimoyama, Yoshiyuki Toso, Tou Matsunaga
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Patent number: 8554103Abstract: An image forming apparatus includes a cylindrical or annular fixing member, an outer surface of which is brought into pressure contact with a conveyed sheet to fix an image onto the sheet; and a heating source for heating the fixing member to a specified target temperature. The fixing member includes a cylindrical or annular base material, a rubber layer with elasticity, and an outer layer for aiding release of the sheet. An end portion of the rubber layer and an end portion of the outer layer are each positioned inner than an end portion of the base material with respect to a width direction perpendicular to a circumferential direction on the base material. A filter member capable of trapping ultra fine particles generated from the rubber layer is provided on the base material in a position facing the end portion of the rubber layer along the circumferential direction.Type: GrantFiled: December 10, 2010Date of Patent: October 8, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Noboru Oomoto, Shoichi Yoshikawa, Shigeru Tashiro, Atsuhiko Shimoyama, Yoshiyuki Toso, Tou Matsunaga
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Patent number: 8554104Abstract: An image forming apparatus includes a fixing member for fixing an image onto a sheet in pressure contact with an outer surface thereof; and a heating source for heating the fixing member. A duct is provided in a position facing the fixing member with respect to a width direction perpendicular to a circumferential direction of the fixing member and which has an inlet for taking in fine particles generated from the fixing member. A filter member is provided inside the duct and which can trap the fine particles which flow through the duct. An exhaust fan is provided in the duct upstream or downstream from the filter member for generating an air flow going from the inlet to an outlet of the duct. A control section controls the operation of the exhaust fan according to initial burst conditions under which the fine particles are emitted from the fixing member.Type: GrantFiled: February 25, 2011Date of Patent: October 8, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Atsuhiko Shimoyama, Shoichi Yoshikawa, Shigeru Tashiro, Noboru Oomoto, Yoshiyuki Toso, Tou Matsunaga
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Patent number: 8478156Abstract: An image forming apparatus includes a fixing member having a cylindrical or annular shape for fixing an image onto a sheet which is in pressure contact with an outer surface thereof; and a heating source for heating the fixing member to a fixing temperature. A duct is provided in a position facing the fixing member with respect to a width direction perpendicular to a circumferential direction of the fixing member and which has an inlet for taking in fine particles generated from the fixing member. An exhaust fan is provided inside the duct or in an outlet of the duct for generating an air flow going from the inlet to the outlet of the duct. A first filter member is provided upstream or downstream from the exhaust fan inside the duct and the first filter can trap the fine particles which flow through the duct getting on the air flow.Type: GrantFiled: February 25, 2011Date of Patent: July 2, 2013Assignee: Konica Minolta Business Technologies, IncInventors: Atsuhiko Shimoyama, Tooru Watanabe, Shigeru Tashiro, Noboru Oomoto, Yoshiyuki Toso, Tou Matsunaga
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Publication number: 20110211859Abstract: An image forming apparatus includes a fixing member having a cylindrical or annular shape for fixing an image onto a sheet which is in pressure contact with an outer surface thereof; and a heating source for heating the fixing member to a fixing temperature. A duct is provided in a position facing the fixing member with respect to a width direction perpendicular to a circumferential direction of the fixing member and which has an inlet for taking in fine particles generated from the fixing member. An exhaust fan is provided inside the duct or in an outlet of the duct for generating an air flow going from the inlet to the outlet of the duct. A first filter member is provided upstream or downstream from the exhaust fan inside the duct and the first filter can trap the fine particles which flow through the duct getting on the air flow.Type: ApplicationFiled: February 25, 2011Publication date: September 1, 2011Applicant: Konica Minolta Business Technologies, Inc.Inventors: Atsuhiko SHIMOYAMA, Tooru WATANABE, Shigeru TASHIRO, Noboru OOMOTO, Yoshiyuki TOSO, Tou MATSUNAGA
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Publication number: 20110211860Abstract: An image forming apparatus includes a fixing member having a cylindrical or annular shape for fixing an image onto a sheet which is in pressure contact with an outer surface thereof; and a heating source for heating the fixing member to a fixing temperature. A duct is provided in a position facing the fixing member with respect to a width direction perpendicular to a circumferential direction of the fixing member and which has an inlet for taking in fine particles generated from the fixing member. A filter member is provided inside the duct and which can trap the fine particles which flow through the duct. An exhaust fan is provided in the duct upstream or downstream from the filter member for generating an air flow going from the inlet to an outlet of the duct. A control section controls the operation of the exhaust fan according to initial burst conditions under which the fine particles are emitted from the fixing member.Type: ApplicationFiled: February 25, 2011Publication date: September 1, 2011Applicant: Konica Minolta Business Technologies, Inc.Inventors: Atsuhiko SHIMOYAMA, Shoichi YOSHIKAWA, Shigeru TASHIRO, Noboru OOMOTO, Yoshiyuki TOSO, Tou MATSUNAGA
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Publication number: 20110200371Abstract: A fixing member according to the present invention is such one as is brought into pressure contact with a conveyed sheet to fix an image onto the sheet. The fixing member comprises a cylindrical or annular base material, a rubber layer provided so as to cover an outer surface of the base material and having elasticity, and an outer layer provided so as to cover an outer surface of the rubber layer for aiding release of the sheet. A siloxane content in a central section of the rubber layer is less than twice the siloxane content in an end portion of the rubber layer with respect to a width direction vertical to a circumferential direction on the base material.Type: ApplicationFiled: February 9, 2011Publication date: August 18, 2011Applicant: Konica Minolta Business Technologies, Inc.Inventors: Noboru OOMOTO, Shoichi Yoshikawa, Shigeru Tashiro, Atsuhiko Shimoyama, Yoshiyuki Toso, Tou Matsunaga
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Publication number: 20110142483Abstract: An image forming apparatus includes a cylindrical or annular fixing member, an outer surface of which is brought into pressure contact with a conveyed sheet to fix an image onto the sheet; and a heating source for heating the fixing member to a specified target temperature. The fixing member includes a cylindrical or annular base material, a rubber layer with elasticity, and an outer layer for aiding release of the sheet. An end portion of the rubber layer and an end portion of the outer layer are each positioned inner than an end portion of the base material with respect to a width direction perpendicular to a circumferential direction on the base material. A filter member capable of trapping ultra fine particles generated from the rubber layer is provided on the base material in a position facing the end portion of the rubber layer along the circumferential direction.Type: ApplicationFiled: December 10, 2010Publication date: June 16, 2011Applicant: Konica Minolta Business Technologies, Inc.Inventors: Noboru OOMOTO, Shoichi Yoshikawa, Shigeru Tashiro, Atsuhiko Shimoyama, Yoshiyuki Toso, Tou Matsunaga