Patents by Inventor Yasuhiko Otawa
Yasuhiko Otawa 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: 20220411213Abstract: An example paper feed device includes a tray to feed printing paper, a magnetic force generation element to generate a magnetic flux, a 3D magnetic sensor to detect changes in the a density of the magnetic flux generated by the magnetic force generation element in each of three axes, and a controller. The tray has a movable element that is movable in relation to the printing paper. Either the magnetic force generation element or the 3D magnetic sensor is attached to the movable element. The controller determines the position of the movable element based on a detection signal received from the 3D magnetic sensor.Type: ApplicationFiled: October 16, 2020Publication date: December 29, 2022Inventor: Yasuhiko OTAWA
-
Publication number: 20210339970Abstract: A sheet feeding device includes a tray to store a stack of sheets, and a sheet elevation mechanism provided at the bottom of the tray to lift the stack of sheets until a top sheet of the stack of sheets reaches a predetermined height position. A paper feed roller is disposed above the tray to come in contact with the top sheet having reached the predetermined height position and rotated by a motor to deliver the top sheet from the tray. Additionally, the sheet feed device includes a controller to control the sheet elevation mechanism based on a drive torque of the motor to adjust the height position of the stack of sheets, after delivery of the first sheet from the tray by the paper feed roller and upon delivery of a second sheet by the paper feed roller. The frictional force to be produced between the second sheet and the paper feed roller is substantially equal to the frictional force produced between the first sheet and the paper feed roller during delivery of the first sheet.Type: ApplicationFiled: August 26, 2019Publication date: November 4, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventor: Yasuhiko OTAWA
-
Patent number: 8073346Abstract: According to an aspect of the invention, an image forming apparatus includes an image forming unit, a first detecting unit, a second detecting unit, a control unit. The image forming unit forms an image on a recording medium by using coloring materials of a plurality of colors based on image information. The first detecting unit detects whether or not the first given number of the first housing units are installed to the apparatus. The second detecting unit detects whether or not the second given number of the second housing unit and the third given number of the first housing unit are installed to the apparatus.Type: GrantFiled: February 22, 2010Date of Patent: December 6, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Hiroyuki Sakai, Shinji Yoshida, Yasuhiko Otawa, Miho Sasaki
-
Patent number: 7885553Abstract: An image forming apparatus that includes: an image forming apparatus main body; a replaceable unit which is attached to the image forming apparatus main body in a detachable manner; a storage unit provided in the replaceable unit, the storage unit storing information with respect to the replaceable unit; a first detecting unit that detects a first-stage operation for replacing the replaceable unit and other operation at a first stage of replacing the replaceable unit; a second detecting unit that detects a second-stage operation for replacing the replaceable unit at a second stage of replacing the replaceable unit; and a control unit that controls access to the storage unit in accordance with whether the second detecting unit detects the second-stage operation, when the first detecting unit detects the first-stage operation.Type: GrantFiled: July 26, 2006Date of Patent: February 8, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Yasuhiko Otawa, Miho Sasaki
-
Publication number: 20100329700Abstract: According to an aspect of the invention, an image forming apparatus includes an image forming unit, a first detecting unit, a second detecting unit, a control unit. The image forming unit forms an image on a recording medium by using coloring materials of a plurality of colors based on image information. The first detecting unit detects whether or not the first given number of the first housing units are installed to the apparatus. The second detecting unit detects whether or not the second given number of the second housing unit and the third given number of the first housing unit are installed to the apparatus.Type: ApplicationFiled: February 22, 2010Publication date: December 30, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Hiroyuki SAKAI, Shinji YOSHIDA, Yasuhiko OTAWA, Miho SASAKI
-
Publication number: 20070086793Abstract: An image forming apparatus that includes: an image forming apparatus main body; a replaceable unit which is attached to the image forming apparatus main body in a detachable manner; a storage unit provided in the replaceable unit, the storage unit storing information with respect to the replaceable unit; a first detecting unit that detects a first-stage operation for replacing the replaceable unit and other operation at a first stage of replacing the replaceable unit; a second detecting unit that detects a second-stage operation for replacing the replaceable unit at a second stage of replacing the replaceable unit; and a control unit that controls access to the storage unit in accordance with whether the second detecting unit detects the second-stage operation, when the first detecting unit detects the first-stage operation.Type: ApplicationFiled: July 26, 2006Publication date: April 19, 2007Applicant: FUJI XEROX CO., LTD.Inventors: Yasuhiko Otawa, Miho Sasaki
-
Patent number: 5310800Abstract: A partially crosslinked thermoplastic elastomer composition having an excellent heat-bondability is obtained by dynamically heat-treating a peroxide-crosslinking olefin copolymer rubber with an .alpha.,.beta.-unsaturated carboxylic acid or a derivative thereof in the presence of an organic peroxide.Type: GrantFiled: March 26, 1992Date of Patent: May 10, 1994Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Shizuo Shimizu, Akira Uchiyama, Kunihide Hiraoka, Katsuo Okamoto, Yasuhiko Otawa
-
Patent number: 5300581Abstract: A process for producing a thermoplastic elastomer having excellent elasticity even with a small rubber content and being excellent in strength, coatability and thermal adhesion to different materials such as various resins, metals or the like, which comprises melting and kneading a material mixture containing (A) particles of a polymer composed of a crystalline olefin polymer portion and a noncrystalline olefin polymer portion, (B) a graft-modifier and (C) a radical initiator to form a graft-modified and crosslinked thermoplastic elastomer having a cyclohexane-insoluble content of at least 40% by weight; and a thermoplastic elastomer obtained by the above method.Type: GrantFiled: October 18, 1991Date of Patent: April 5, 1994Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Katsuo Okamoto, Mamoru Kioka, Takashi Ueda
-
Patent number: 5270377Abstract: In the case where a polyamide is blended with a specific partially crosslinked graft-modified polyolefin elastomer obtained by dynamically heat-treating a blend of a peroxide-crosslinking olefin copolymer rubber and an olefinic plastic with an unsaturated carboxylic acid or derivative thereof, an unsaturated epoxy monomer or an unsaturated hydroxy monomer in the presence of an organic peroxide, if the graft-modified polyolefin plastomer occupies a major portion, a composition excellent in the oil resistance, the mechanical strength and the resistance against heat aging is obtained and if the polyamide occupies a major portion, a composition excellent in the impact resistance, the rigidity and the tensile strength is obtained.Type: GrantFiled: October 19, 1992Date of Patent: December 14, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Noboru Sakamaki, Tetsuo Tojo, Katsuo Okamoto, Toshiyuki Maeda
-
Patent number: 5247018Abstract: A modified thermoplastic resin or elastomer composition having excellent paint adhesion is obtained by dynamically heat-treating a peroxide-crosslinkable olefin type copolymer and/or an olefin type plastic and a monomer containing at least one amino group and/or an unsaturated carboxylic acid or a derivative thereof in the presence of an organic peroxide. This thermoplastic resin or elastoemr composition is valuable as a material for an interior automotive trim. If a layer of this thermoplastic elastomer composition is laminated with a polyurethane layer, a laminate having excellent tensile strength and heat resistance, which is especially valuable as an interior trim of a vehicle such as an automobile, is obtained.Type: GrantFiled: May 20, 1992Date of Patent: September 21, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Toshikyuki Maeda, Yasuhiko Otawa, Katsuo Okamoto
-
Patent number: 5237003Abstract: In the case where a polyamide is blended with a specific partially crosslinked graft-modified polyolefin elastomer obtained by dynamically heat-treating a blend of a peroxide-crosslinking olefin copolymer rubber and an olefinic plastic with an unsaturated carboxylic acid or derivative thereof, an unsaturated epoxy monomer or an unsaturated hydroxy monomer in the presence of an organic peroxide, if the graft-modified polyolefin plastomer occupies a major portion, a composition excellent in the oil resistance, the mechanical strength and the resistance against heat aging is obtained and if the polyamide occupies a major portion, a composition excellent in the impact resistance, the rigidity and the tensile strength is obtained.Type: GrantFiled: April 23, 1992Date of Patent: August 17, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Noboru Sakamaki, Tetsuo Tojo, Katsuo Okamoto, Toshiyuki Maeda
-
Patent number: 5237010Abstract: Chlorinated ethylene-.alpha.-olefin copolymer rubber of the present invention is characterized in that the content of chlorine bonded to primary carbon atom is 0.6% by weight or more and the content of chlorine bonded to tertiary carbon atom is 1.6% by weight or less. This chlorinated ethylene-.alpha.-olefin copolymer rubber has a high vulcanization speed and excels in heat resistance. Additionally, this thermoplastic elastomer composition consisting of this vulcanizate and crystalline polyolefin resin particularly excels in moldability and processibility.Type: GrantFiled: October 8, 1992Date of Patent: August 17, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Tetsuo Tojo, Keiji Okada, Yoshiharu Kikuchi, Yasuhiko Otawa, Toshiyuki Maeda, Katsuo Okamoto
-
Patent number: 5206305Abstract: Chlorinated ethylene-.alpha.-olefin copolymer rubber of the present invention is characterized in that the content of chlorine bonded to primary carbon atom is 0.6 % by weight or more and the content of chlorine bonded to tertiary carbon atom is 1.6 % by weight or less. This chlorinated ethylene-.alpha.-olefin copolymer rubber has a high vulcanization speed and excels in heat resistance. Additionally, this thermoplastic elastomer composition consisting of this vulcanizate and crystalline polyolefin resin particularly excels in moldability and processibility.Type: GrantFiled: April 17, 1991Date of Patent: April 27, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Tetsuo Tojo, Keiji Okada, Yoshiharu Kikuchi, Yasuhiko Otawa, Toshiyuki Maeda, Katsuo Okamoto
-
Patent number: 4997707Abstract: In accordance with the present invention, there are provided laminated molded articles excellent in properties such as heat resistance, low-temperature resistance and the like and also excellent in soft touch and hand feel, said laminated molded articles comprising(a) a core layer composed of a synthetic resin,(b) an interlayer (I) composed of a polyolefin foam, polyurethane foam or thermoplastic elastomer foam, formed on said core layer,(c) an interlayer (II) composed of a modified polyolefin elastomer graft modified with at least one graft monomer selected from the group consisting of unsaturated carboxylic acids, derivatives thereof, unsaturated epoxy monomers and unsaturated hydroxy monomers, formed on said interlayer (I), and(d) a surface skin composed of at least one polymer selected from the group consisting of polyamides, polyurethane and polyesters, formed on said interlayer (II), said surface skin being decorated, if necessary, by gigging the surface thereof.Type: GrantFiled: November 28, 1989Date of Patent: March 5, 1991Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Toshiyuki Maeda, Noboru Sakamaki, Tooru Takehara
-
Patent number: 4908412Abstract: A partially crosslinked thermoplastic elastomer composition excellent in the heat bondability is obtained by dynamically heat-treating a blend of a peroxide-crosslinking olefin copolymer and an olefinic plastic with an unsaturated epoxy monomer or an unsaturated hydroxy monomer in the presence of an organic peroxide.Type: GrantFiled: July 12, 1989Date of Patent: March 13, 1990Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Toshiyuki Maeda, Kunihide Hiraoka, Katsuo Okamoto
-
Patent number: 4897298Abstract: A laminate comprising (a) a layer of a partially crosslinked graft-modified polyolefin elastomer formed by dynamically heat-treating a mixture of a peroxide-crosslinking olefin copolymer rubber and an olefinic plastic with an unsaturated carboxylic acid or derivative thereof, an unsaturated epoxy monomer or an unsaturated hydroxy monomer in the presence of an organic peroxide and (b) a layer of a polyamide, polyurethane or polyester is excellent in weatherability, heat resistance and dimension stability, and this laminate is effectively molded into an interior part or sealing material of an automobile, especially a glass run channel. The glass run channel molded from this laminate is excellent in the durability, the tightness of contact with glass at the time of closing and the sliding smoothness at the opening-closing operation.Type: GrantFiled: September 26, 1988Date of Patent: January 30, 1990Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Kunihide Hiraoka, Toshiyuki Maeda, Katsuo Okamoto, Noboru Sakamaki, Shizuo Shimizu
-
Patent number: 4894289Abstract: A laminate comprising (a) a layer of a partially crosslinked graft-modified polyolefin elastomer formed by dynamically heat-treating a mixture of a peroxide-crosslinking olefin copolymer rubber and an olefinic plastic with an unsaturated carboxylic acid or derivative thereof, an unsaturated epoxy monomer or an unsaturated hydroxy monomer in the presence of an organic peroxide and (b) a layer of a polyamide, polyurethane or polyester is excellent in weatherability, heat resistance and dimension stability, and this laminate is effectively molded into an interior part or sealing material of an automobile, especially a glass run channel. The glass run channel molded from this laminate is excellent in the durability, the tightness of contact with glass at the time of closing and the sliding smoothness at the opening-closing operation.Type: GrantFiled: October 30, 1987Date of Patent: January 16, 1990Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Kunihide Hiraoka, Toshiyuki Maeda, Katsuo Okamoto, Noboru Sakamaki, Shizuo Shimizu
-
Patent number: 4877817Abstract: A chlorinated rubber having a chlorine content of 10 to 45% by weight based on the weight of the chlorinated rubber and a Mooney viscosity, ML.sub.1+4 (121.degree. C.), of 10 to 190 is obtained by chlorinating an ethylene/alpha-olefin/non-conjugated diene copolymer rubber containing 5-vinyl-2-norbornene as the non-conjugated diene. The chlorinated rubber has excellent processability in roll milling, extrusion, etc.Type: GrantFiled: December 21, 1988Date of Patent: October 31, 1989Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Tetsuo Tojo, Takashi Nakahara, Yasuhiko Otawa, Katsuo Okamoto
-
Patent number: 4818785Abstract: A fine particulate crosslinked amorphous copolymer comprising an amorphous copolymer having a constituent unit originating at least from ethylene and .alpha.-olefin, and having an average particle diameter of 0.2 to 50 .mu.m and a hot toluene insolubles content of 15% by weight or more.Type: GrantFiled: December 9, 1986Date of Patent: April 4, 1989Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Tetsuo Tojo, Akira Matsuda, Katsuo Okamoto
-
Patent number: 4814390Abstract: A chlorinated rubber having a chlorine content of 10 to 45% by weight based on the weight of the chlorinated rubber and a Mooney Viscosity, ML.sub.1+4 (121.degree. C.), of 10 to 190 is obtained by chlorinating an ethylene/alpha-olefin/non-conjugated diene copolymer rubber containing 5-vinyl-2-norbornene as the non-conjugated diene. The chlorinated rubber has excellent processability in roll milling, extrusion, etc.Type: GrantFiled: December 15, 1987Date of Patent: March 21, 1989Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Tetsuo Tojo, Takashi Nakahara, Yasuhiko Otawa, Katsuo Okamoto