Patents by Inventor Isao Nagata
Isao Nagata 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: 7268246Abstract: Organosilicon compounds are described which are prepared from epoxy-functional silanes and monocarboxylic acids. The compounds are useful in coatings, adhesives, and sealants, and the like.Type: GrantFiled: December 15, 2004Date of Patent: September 11, 2007Assignee: E.I. du Pont de Nemours and CompanyInventors: Lech Wilczek, Isao Nagata
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Publication number: 20060128920Abstract: Organosilicon compounds are described which are prepared from epoxy-functional silanes and monocarboxylic acids. The compounds are useful in coatings, adhesives, and sealants, and the like.Type: ApplicationFiled: December 15, 2004Publication date: June 15, 2006Inventors: Lech Wilczek, Isao Nagata
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Patent number: 6998154Abstract: This invention relates to rapid curing coating compositions that are particularly useful for automotive OEM and refinish applications. The coating composition includes a binder component that contains a novel highly branched copolyester polyol, and a crosslinking component that contains conventional crosslinking agents, such as polyisocyanate and melamine. This invention is also directed to a process for producing coatings from the rapid curing coating compositions. These compositions are especially useful in providing for mar resistant and flexible coatings.Type: GrantFiled: February 19, 2003Date of Patent: February 14, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: Robert John Barsotti, Carl Brent Douglas, Laura A. Lewin, Isao Nagata, Lech Wilczek
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Patent number: 6996361Abstract: A full-color electrophotographic apparatus of the present invention is configured such that a toner image is formed on an intermediate transfer member. The intermediate transfer member is heated to a temperature equal to or higher than the softening start temperature of resin contained in a liquid toner and equal to or lower than the withstand temperature of a photoconductor member. A carrier-removing roller to which bias can be applied abuts the intermediate transfer member so as to remove a carrier while packing softened toner by the force of an electric field induced by bias. In a transfer section for transfer to a printing medium, a backup roller presses the printing medium against the intermediate transfer member, and the toner image is transferred from the intermediate transfer member to the printing medium. Before being pressed against the toner image on the intermediate transfer member, the printing medium is heated.Type: GrantFiled: January 28, 2003Date of Patent: February 7, 2006Assignee: PFU LimitedInventors: Motoharu Ichida, Satoshi Moriguchi, Yasuhiko Kishimoto, Masanobu Hongo, Shigeki Uesugi, Yoshiro Kawamoto, Seiichi Takeda, Tadasuke Yoshida, Yoshiaki Fujimoto, Jiyun Du, Hironaga Hongawa, Eri Yamanishi, Tatsuo Nozaki, Shigeharu Okano, Isao Nagata
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Patent number: 6978111Abstract: A cleaning apparatus for a liquid-development electrophotographic apparatus in which, after a toner image formed on a surface of an intermediate transfer member by use of a liquid developer is transferred to a printing medium, the liquid developer remaining on the intermediate transfer is removed and collected. The cleaning apparatus includes a cleaning-liquid application device for applying a cleaning liquid to the intermediate transfer member which has transferred an image to the printing medium; a bias voltage application device for applying a bias voltage opposite in polarity to charged toner particles of the developer to the intermediate transfer member; and a collection device for removing the cleaning liquid which has been applied to and the residual developer which remains on the intermediate transfer member from the intermediate transfer member without transfer of an image to the printing medium, and collecting the removed cleaning liquid and residual developer.Type: GrantFiled: January 28, 2003Date of Patent: December 20, 2005Assignee: PFU LimitedInventors: Isao Nagata, Satoshi Sakai, Hironaga Hongawa, Shigeharu Okano, Eri Yamanishi, Norihiro Yamasaku
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Publication number: 20050238899Abstract: A rapid cure sprayable liquid coating composition containing a highly branched film-forming polyester polyol resin, a polyisocyanate crosslinking agent, and a volatile organic liquid carrier. Low molecular weight film-forming silane compounds are incorporated in the coating for better film properties, such as improved adhesion to commercially available windshield adhesives, and also for reduced spray viscosity, which leads to higher spray solids and lower volatile organic content. The coating composition can be used as a clearcoat over a pigmented basecoat to provide an attractive exterior automotive finish.Type: ApplicationFiled: April 27, 2004Publication date: October 27, 2005Inventors: Isao Nagata, Leatrese Hopkins, Michelle Patterson
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Patent number: 6898404Abstract: A liquid-development electrophotographic apparatus forms on a toner-image-bearing body a plurality of color images developed by a plurality of developing units, one for each color, that use liquid toner. One or more carrier-removing units for removing excessive carrier from a toner layer that forms a toner image are disposed downstream of each developing unit and upstream of the next developing unit disposed upstream of the former developing unit with respect to a process progress direction. Each carrier-removing unit includes two or more conductive collection rollers to which a bias voltage is applied in such a direction as to press toner against the toner-image-bearing body and which is brought into contact with the toner-image-bearing body. The upstream roller is rotated in the same direction as the direction of surface movement of the toner-image-bearing body, whereas the downstream roller is rotated in the opposite direction.Type: GrantFiled: August 5, 2002Date of Patent: May 24, 2005Assignee: PFU LimitedInventors: Satoshi Sakai, Isao Nagata, Hironaga Hongawa, Shigeharu Okano, Eri Yamanishi, Yutaka Nakashima, Akihiko Inamoto, Tadashi Nishikawa, Norihiro Yamasaku
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Patent number: 6855779Abstract: A low VOC clear coat composition which comprises an epoxy compound, a melamine component and an aliphatic polyisocyanate having an average of 2 to 6 isocyanate functionalities, and optionally contains a catalyst (e.g., organotin catalysts, acid catalysts and combinations); a polyhydroxyl functional compound (e.g., polycarbonate polyol); or other additives (e.g., light absorbers and light stabilizers). Also disclosed is an article coated with the clear coat composition, a process of making the composition, and a process of applying the composition to, for example, an automobile body.Type: GrantFiled: March 16, 2000Date of Patent: February 15, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Isao Nagata, Peter William Uhlianuk, Donald A. White
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Publication number: 20040234309Abstract: After passing a position of transfer to a printing medium 10, a portion of an intermediate transfer member 1 on which an image is previously formed reaches the position of a cleaning unit 2. The cleaning unit 2 removes residual toner, whereby the intermediate transfer member 1 prepares for a next cycle of formation of images in the corresponding colors by means of the developing units 4, 5, 6, and 7. The cleaning unit 2 includes an application friction roller 21 and a bias roller 24. The application friction roller 21 has a function to weaken cohesion/firm adhesion of residual toner through application of a cleaning liquid to the intermediate transfer member 1 and a function to exfoliate and disperse the residual toner in the cleaning liquid through imposition of a shear force on the residual toner. The bias roller 24 includes a bias voltage generation mechanism 24a for applying a bias voltage between the bias roller 24 and the intermediate transfer member 1.Type: ApplicationFiled: December 22, 2003Publication date: November 25, 2004Inventors: Isao Nagata, Satoshi Sakai, Hironaga Hongawa, Shigeharu Okano, Eri Yamanishi, Norihiro Yamasaku
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Publication number: 20040175208Abstract: A full-color electrophotographic apparatus of the present invention is configured such that a toner image is formed on an intermediate transfer member. The intermediate transfer member is heated to a temperature equal to or higher than the softening start temperature of resin contained in a liquid toner and equal to or lower than the withstand temperature of a photoconductor member. A carrier-removing roller to which bias can be applied abuts the intermediate transfer member so as to remove a carrier while packing softened toner by the force of an electric field induced by bias. In a transfer section for transfer to a printing medium, a backup roller presses the printing medium against the intermediate transfer member, and the toner image is transferred from the intermediate transfer member to the printing medium. Before being pressed against the toner image on the intermediate transfer member, the printing medium is heated.Type: ApplicationFiled: December 22, 2003Publication date: September 9, 2004Inventors: Motoharu Ichida, Satoshi Moriguchi, Yasuhiko Kishimoto, Masanobu Hongo, Shigeki Uesugi, Yoshiro Kawamoto, Seiichi Takeda, Tadasuke Yoshida, Yoshiaki Fujimoto, Jiyun Du, Hironaga Hongawa, Eri Yamanishi, Tatsuo Nozaki, Shigeharu Okano, Isao Nagata
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Patent number: 6785501Abstract: In the present invention, a toner image produced through a development process of supplying a liquid toner onto an image bearing body bearing an electrostatic latent image is transferred from the image bearing body onto an intermediate transfer body and then transferred from the intermediate transfer body onto a printing medium by use of a backup roller in a transfer-and-fixation zone. The printing medium is preheated to a temperature required for transfer and fixation before the printing medium reaches the transfer-and-fixation zone. No heating means is provided in the transfer-and-fixation zone, and the intermediate transfer body and the backup roller are pressed against each other at a high pressure ranging from 10 kg/cm2 to 60 kg/cm2.Type: GrantFiled: February 19, 2003Date of Patent: August 31, 2004Assignee: PFU LimitedInventors: Hironaga Hongawa, Satoshi Sakai, Eri Yamanishi, Isao Nagata, Shigeharu Okano, Yutaka Nakashima, Tadashi Nishikawa, Akihiko Inamoto, Satoshi Miyamoto
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Publication number: 20040047656Abstract: A liquid-development electrophotographic apparatus forms on a toner-image-bearing body a plurality of color images developed by a plurality of developing units, one for each color, that use liquid toner. One or more carrier-removing units for removing excessive carrier from a toner layer that forms a toner image are disposed downstream of each developing unit and upstream of the next developing unit disposed upstream of the former developing unit with respect to a process progress direction. Each carrier-removing unit includes two or more conductive collection rollers to which a bias voltage is applied in such a direction as to press toner against the toner-image-bearing body and which is brought into contact with the toner-image-bearing body. The upstream roller is rotated in the same direction as the direction of surface movement of the toner-image-bearing body, whereas the downstream roller is rotated in the opposite direction.Type: ApplicationFiled: July 16, 2003Publication date: March 11, 2004Inventors: Satoshi Sakai, Isao Nagata, Hironaga Hongawa, Shigeharu Okano, Eri Yamanishi, Yutaka Nakashima, Akihiko Inamoto, Tadashi Nishikawa, Norihiro Yamasaku
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Publication number: 20040043152Abstract: This invention relates to rapid curing coating compositions that are particularly useful for automotive OEM and refinish applications. The coating composition includes a binder component that contains a novel highly branched copolyester polyol, and a crosslinking component that contains conventional crosslinking agents, such as polyisocyanate and melamine. This invention is also directed to a process for producing coatings from the rapid curing coating compositions. These compositions are especially useful in providing for mar resistant and flexible coatings.Type: ApplicationFiled: February 19, 2003Publication date: March 4, 2004Inventors: Robert John Barsotti, Carl Brent Douglas, Laura A. Lewin, Isao Nagata, Lech Wilczek
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Patent number: 6635314Abstract: The present invention provides for a clear coating composition most suitable for use as a top clear coat in multi-layered OEM or refinish automotive coatings. The coating composition includes isocyanate and melamine components. The isocyanate component includes an aliphatic polyisocyanate. The composition may be formulated as a two-pack or one-pack coating composition, wherein the isocyanate functionalities are blocked with a blocker such as a mono-alcohol.Type: GrantFiled: August 13, 2001Date of Patent: October 21, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Uhlianuk Peter William, Isao Nagata, Jun Lin, Donald Albert Pacquet, Jr.
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Publication number: 20030190174Abstract: In the present invention, a toner image produced through a development process of supplying a liquid toner onto an image bearing body bearing an electrostatic latent image is transferred from the image bearing body onto an intermediate transfer body and then transferred from the intermediate transfer body onto a printing medium by use of a backup roller in a transfer-and-fixation zone. The printing medium is preheated to a temperature required for transfer and fixation before the printing medium reaches the transfer-and-fixation zone. No heating means is provided in the transfer-and-fixation zone, and the intermediate transfer body and the backup roller are pressed against each other at a high pressure ranging from 10 kg/cm2 to 60 kg/cm2.Type: ApplicationFiled: February 19, 2003Publication date: October 9, 2003Inventors: Hironaga Hongawa, Satoshi Sakai, Eri Yamanashi, Isao Nagata, Shigeharu Okano, Yutaka Nakashima, Tadashi Nishikawa, Akihiko Inamoto, Satoshi Miyamoto
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Patent number: 6544593Abstract: The present invention provides for an etch and mar resistant low VOC clear coating composition most suitable for use as a top clear coat in multi-layered OEM or refinish automotive coatings. The coating composition includes isocyanate, carbonate and melamine components. The isocyanate component includes an aliphatic polyisocyanate. The composition may be formulated as a two-pack or one-pack coating composition, wherein the isocyanate functionalities are blocked with a blocker such as a mono-alcohol.Type: GrantFiled: November 6, 2001Date of Patent: April 8, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Isao Nagata, Peter William Uhlianuk
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Patent number: 6301204Abstract: A jukebox apparatus including a magazine, a drive unit, a carriage for conveying a disk between the magazine and the drive unit, and a temporary storage unit movable between a transfer position in front of the drive unit and an escape position. The carriage has gripping arms, pinch rollers, and a pushing arm for transferring the disk. A control unit is provided to carry out a retry of transferring the disk by displacing the carriage when the disk is not transferred. The pushing time of the pushing arm can be changed by a retry of pushing the disk by the pushing arm. The temporary storage unit is normally monitored.Type: GrantFiled: September 8, 1995Date of Patent: October 9, 2001Assignee: PFU LimitedInventors: Kazuhiro Yamada, Hiroshi Yamagishi, Kazunori Matsuda, Kouichi Minami, Isao Nagata, Yoshiyasu Tagawa, Kazuaki Umi, Hitoshi Terashima
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Patent number: 5729892Abstract: A first printed board transferred from a prior process on an inlet conveyer is placed on a moving unit at a first switching position. The moving unit moves to a second switching position while mounting the first printed board with electronic components from a component feeding section. During this process, a second printed board stands by at the second switching position via the inlet conveyer, a transit path and an intermediate conveyer. At the second switching position, the second printed board is placed on the moving unit while shunting out the first printed board onto an outlet conveyer for transfer to a subsequent process. The moving unit moves to the first switching position while mounting the second printed board with the electronic components from the component feeding section.Type: GrantFiled: February 28, 1996Date of Patent: March 24, 1998Assignee: Nippondenso Co., Ltd.Inventors: Shiniti Umemura, Isao Nagata, Tomoaki Huzii, Takumi Arai