Patents by Inventor Akira Ohira
Akira Ohira 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).
-
Publication number: 20190369527Abstract: Provided is an intermediate transfer belt for use in an electrophotographic image-forming apparatus, the intermediate transfer belt containing a polyamide-imide, a conductive agent, and a dispersant, the dispersant having a block polymer structure.Type: ApplicationFiled: May 3, 2019Publication date: December 5, 2019Inventors: Eiichi YOSHIDA, Shinichi Hamaguchi, Ito Koga, Shiori Tsugawa, Akira Ohira
-
Publication number: 20190161439Abstract: A compound represented by the formula below: wherein R is selected from the group consisting of benzyl, C3-11 alkyl, C3-11 alkenyl, C2-9 branched alkenyl, C3-9 branched alkyl, and —CH2OAc.Type: ApplicationFiled: January 30, 2019Publication date: May 30, 2019Applicant: BASSERU CHEMICAL CO., LTD.Inventors: Kenichi EGUCHI, Akira OHIRA, Yoshikazu KITANO, Kazunari KURAMATA
-
Patent number: 10031454Abstract: A fixing belt according to the present invention has an endless shape and includes a base layer made of a heat-resistant resin; an elastic layer made of an elastic material; and a releasing layer which are stacked on one another in this order in which: the loss tangent tan ? of the elastic material at 20 Hz is 0.1 or smaller; and the fixing belt is mounted in a fixing device in the state where the belt is rotatably supported by two or more rollers including a heating roller, whereby favorable fixation performance and favorable separativeness relative to a recording medium can be achieved even in high speed image formation of an electrophotographic process.Type: GrantFiled: January 29, 2016Date of Patent: July 24, 2018Assignee: KONICA MINOLTA, INC.Inventors: Izumi Mukoyama, Hirofumi Koga, Go Yamaguchi, Asao Matsushima, Akira Ohira
-
Patent number: 10025245Abstract: A resistance heating element contains a heat-resistant resin and conductive stainless steel fiber coated with a film, and satisfies the following expression (1): 1?(r1/r0)?1.03, where r0 represents the initial resistance value of the resistance heating element, and r1 represents the resistance value of the resistance heating element after allowed to stand at 30° C. and a relative humidity of 80% for one week.Type: GrantFiled: January 15, 2015Date of Patent: July 17, 2018Assignee: KONICA MINOLTA, INC.Inventors: Izumi Mukoyama, Eiichi Yoshida, Susumu Sudo, Akira Ohira
-
Publication number: 20180072657Abstract: A compound represented by the formula below: wherein R is selected from the group consisting of benzyl, C3-11 alkyl, C3-11 alkenyl, C2-9 branched alkenyl, C3-9 branched alkyl, and —CH2OAc.Type: ApplicationFiled: June 14, 2016Publication date: March 15, 2018Applicant: BASSERU CHEMICAL CO., LTD.Inventors: Kenichi EGUCHI, Akira OHIRA, Yoshikazu KITANO, Kazunari KURAMATA
-
Publication number: 20160223967Abstract: A fixing belt according to the present invention has an endless shape and includes a base layer made of a heat-resistant resin; an elastic layer made of an elastic material; and a releasing layer which are stacked on one another in this order in which: the loss tangent tan ? of the elastic material at 20 Hz is 0.1 or smaller; and the fixing belt is mounted in a fixing device in the state where the belt is rotatably supported by two or more rollers including a heating roller, whereby favorable fixation performance and favorable separativeness relative to a recording medium can be achieved even in high speed image formation of an electrophotographic process.Type: ApplicationFiled: January 29, 2016Publication date: August 4, 2016Inventors: IZUMI MUKOYAMA, HIROFUMI KOGA, GO YAMAGUCHI, ASAO MATSUSHIMA, AKIRA OHIRA
-
Patent number: 9268272Abstract: An endless heat-generation belt 10 includes a heat-generation layer 11 and a pair of metal electrodes 12 and 12. The heat-generation layer 11 is composed of an electroconductive resin composition and the heat-generation layer 11 can be heated by supplying electricity. The metal electrode 12 is bonded to the heat-generation layer 11 with an electroconductive adhesive 13. The electroconductive adhesive 13 contains an adhesive matrix and an electroconductive filler. The adhesive matrix is a modified silicone resin or an epoxy resin. The heat-generation belt 10 has excellent heat resistance, durability, and resistance stability, and it can be used for a fixing device of an image forming apparatus.Type: GrantFiled: September 11, 2013Date of Patent: February 23, 2016Assignee: KONICA MINOLTA, INC.Inventors: Izumi Mukoyama, Eiichi Yoshida, Susumu Sudo, Akira Ohira
-
Publication number: 20150212467Abstract: A resistance heating element contains a heat-resistant resin and conductive stainless steel fiber coated with a film, and satisfies the following expression (1): 1?(r1/r0)?1.03, where r0 represents the initial resistance value of the resistance heating element, and r1 represents the resistance value of the resistance heating element after allowed to stand at 30° C. and a relative humidity of 80% for one week.Type: ApplicationFiled: January 15, 2015Publication date: July 30, 2015Inventors: Izumi MUKOYAMA, Eiichi Yoshida, Susumu Sudo, Akira Ohira
-
Patent number: 8872072Abstract: A heat-producing element for a fixing device to carry out heat-fixing after a toner image having been formed using a pulverized toner is transferred on an image support, a heat-producing element for a fixing device in which a thin-leaf graphite-pulverized material of a volume specific resistance of 10?6 ?·cm to less than 10?2 ?·cm is incorporated in a heat-resistant resin as a conductive material.Type: GrantFiled: May 23, 2011Date of Patent: October 28, 2014Assignee: Konica Minolta Business Technologies, Inc.Inventors: Eiichi Yoshida, Akira Ohira, Susumu Sudo, Izumi Mukoyama
-
Patent number: 8841368Abstract: A method for manufacturing a nonflammable polyester resin composition comprising: making a polymer mixture containing the following (A) to (E) components in a melted state pass through a space between two parallel faces, with a face-to-face distance x being set to 5 mm or less; (A) a polyester resin of 40 to 80% by weight; (B) a polycarbonate resin of 5 to 40% by weight; (C) a rubbery polymer of 5 to 30% by weight; (D) a polyphenylene sulfide resin and/or a phenol resin of 2 to 20% by weight; and (E) a phosphorus-containing acid ester compound and/or a polyamide resin of 0.1 to 25% by weight.Type: GrantFiled: August 25, 2010Date of Patent: September 23, 2014Assignee: Konica Minolta Business Technologies, Inc.Inventors: Yasuo Kurachi, Akira Ohira
-
Publication number: 20140079454Abstract: An endless heat-generation belt 10 includes a heat-generation layer 11 and a pair of metal electrodes 12 and 12. The heat-generation layer 11 is composed of an electroconductive resin composition and the heat-generation layer 11 can be heated by supplying electricity. The metal electrode 12 is bonded to the heat-generation layer 11 with an electroconductive adhesive 13. The electroconductive adhesive 13 contains an adhesive matrix and an electroconductive filler. The adhesive matrix is a modified silicone resin or an epoxy resin. The heat-generation belt 10 has excellent heat resistance, durability, and resistance stability, and it can be used for a fixing device of an image forming apparatus.Type: ApplicationFiled: September 11, 2013Publication date: March 20, 2014Applicant: Konica Minolta, Inc.Inventors: Izumi MUKOYAMA, Eiichi YOSHIDA, Susumu SUDO, Akira OHIRA
-
Publication number: 20120235327Abstract: Disclosed are a recycled resin manufacturing process and a recycled resin, the process comprising the steps of sorting a molded waste resin product, pulverizing the sorted molded waste resin product into resin flakes, washing the resin flakes, separating the washed resin flakes to remove different kinds of resins, drying the separated resin flakes, classifying the dried resin flakes to remove foreign matter deposited on the flakes, the classifying being carried out employing a classifying apparatus comprising a classifying section and provided therein, a physical field application device having an airflow force field and another physical field other than the airflow force field, and pelletizing the classified resin flakes, wherein the recycled resin has an oligomer content of not more than 1% by mass.Type: ApplicationFiled: March 5, 2012Publication date: September 20, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Yasuo KURACHI, Akira OHIRA, Ryuji KITANI, Yasuharu SAITA, Masashi MAMINO
-
Publication number: 20110318077Abstract: A heat-producing element for fixing a toner image on an image support, in which the heat-producing element comprises a heat-resistant resin and electrically-conductive fiber having a shape stipulated by conditions 1, 2 and 3. 1. Aspect ratio: 0.025?(A/B)?0.25 2. Diameter of electrically-conductive fiber (A): 0.5 ?m?A?3 0 ?m 3. Length of electrically-conductive fiber (B): 5.Type: ApplicationFiled: June 15, 2011Publication date: December 29, 2011Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Izumi MUKOYAMA, Akira OHIRA, Susumu SUDO, Eiichi YOSHIDA
-
Publication number: 20110293342Abstract: A heat-producing element for a fixing device to carry out heat-fixing after a toner image having been formed using a pulverized toner is transferred on an image support, a heat-producing element for a fixing device in which a thin-leaf graphite-pulverized material of a volume specific resistance of 10?6 ?·cm to less than 10?2 ?·cm is incorporated in a heat-resistant resin as a conductive material.Type: ApplicationFiled: May 23, 2011Publication date: December 1, 2011Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Eiichi YOSHIDA, Akira OHIRA, Susumu SUDO, Izumi MUKOYAMA
-
Publication number: 20110230625Abstract: Provide is a flame-retardant polyester resin composition exhibiting excellent flame-retardant performance, specifically flame self-extinction performance and excellent mechanical performance such as elastic modulus, bending strength, and impact strength. Also provided is a flame-retardant polyester resin composition exhibiting excellent flame-retardant performance, specifically flame self-extinction performance and excellent mechanical performance such as elastic modulus, bending strength, and impact strength, even when at least one of a polyester resin and a polycarbonate resin obtained from molded products having become waste materials is recycled. A flame-retardant polyester resin composition comprising: (A) 50-80% by mass of a polyethylene terephthalate (PET), (B) 5-40% by mass of a polycarbonate resin, (C) 5-30% by mass of a polymer of a glass transition temperature Tg of less than 35° C., (D) 0.Type: ApplicationFiled: March 14, 2011Publication date: September 22, 2011Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Yasuo KURACHI, Akira OHIRA, Hiroshi ONO, Kazuyoshi OTA
-
Publication number: 20110229673Abstract: Provide is a flame-retardant polyester resin composition exhibiting excellent flame-retardant performance, specifically flame self-extinction performance and excellent injection moldability and blow moldability by biaxially-stretch blow molding method, by solving problem of poor injection moldability of the conventional polyester. A flame-retardant polyester resin composition comprising: (A) 50-80% by mass of a polyester resin, (B) 10-40% by mass of a polycarbonate resin, (C) 5-30% by mass of a polymer of a glass transition temperature Tg of less than 35° C., and (D) 0.5-5% by mass of a polymer of a carbon residue rate resin of at least 15%.Type: ApplicationFiled: March 14, 2011Publication date: September 22, 2011Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Yasuo KURACHI, Akira OHIRA, Hiroshi ONO, Kazuyoshi OTA
-
Publication number: 20110054092Abstract: A method for manufacturing a nonflammable polyester resin composition comprising: making a polymer mixture containing the following (A) to (E) components in a melted state pass through a space between two parallel faces, with a face-to-face distance x being set to 5 mm or less; (A) a polyester resin of 40 to 80% by weight; (B) a polycarbonate resin of 5 to 40% by weight; (C) a rubbery polymer of 5 to 30% by weight; (D) a polyphenylene sulfide resin and/or a phenol resin of 2 to 20% by weight; and (E) a phosphorus-containing acid ester compound and/or a polyamide resin of 0.1 to 25% by weight.Type: ApplicationFiled: August 25, 2010Publication date: March 3, 2011Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Yasuo KURACHI, Akira OHIRA
-
Patent number: 7676898Abstract: Magnetic recording media are smoothed with a tape. Each magnetic recording medium has a magnetic film and a lubricant film thereon. Next, the smoothed magnetic recording media are taken out from a process case and put in a shipping case. The magnetic recording media are then taken out from the shipping case and tested. Non-defective ones of the magnetic recording media are put in the shipping case.Type: GrantFiled: January 9, 2006Date of Patent: March 16, 2010Assignee: Fujitsu LimitedInventors: Kiyoto Toya, Masami Tagawa, Akira Ohira, Shinya Matsuzawa, Youichi Komamura, Kenji Fukase
-
Publication number: 20090245892Abstract: In the present invention, provided can be a developing roller through which neither fog nor contamination inside the apparatus is generated, and no insufficient image density is produced, even though printing a large number of paper sheets (5000 paper sheets, for example). Also disclosed is a developing roller possessing a conductive shaft and a coating layer provided on an outer circumference of the conductive shaft, wherein the coating layer possesses a resin and a surface roughness particle, and the coating layer surface has a surface roughness Ra of 0.5-2.5 ?m and a Young's modulus Y of 1-200 MPa.Type: ApplicationFiled: March 25, 2009Publication date: October 1, 2009Applicant: Konica Minolta Business Technologies, Inc.Inventors: Shinya OBARA, Akira OHIRA, Takeo OSHIBA
-
Patent number: 7282313Abstract: Disclosed is a production method of an electrophotographic toner, which comprises toner particles comprising a resin and a colorant. The method comprises a step of forming toner particles in an aqueous medium, and processing an aqueous medium containing the toner particles or a component of the toner particles by gas bubbles.Type: GrantFiled: August 23, 2004Date of Patent: October 16, 2007Assignee: Konica Minolta Business Technologies, Inc.Inventors: Akira Ohira, Junji Ujihara, Shoichiro Ishibashi, Kentarou Yamawaki