Patents by Inventor Masahiro Yuki
Masahiro Yuki 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: 7438959Abstract: The present invention aims to solve a blocking problem of an intermediate transfer recording medium and to provide an intermediate transfer recording medium having excellent separability. The intermediate transfer recording medium comprises: a sheet substrate provided with a resin layer; and a transparent sheet provided with a receptive layer. The transparent sheet provided with the receptive layer has been put on top of the sheet substrate provided with the resin layer so that the resin layer faces the transparent sheet on its side remote from the receptive layer. The resin layer is separable from the transparent sheet to transfer the transparent sheet provided with the receptive layer onto an object. The resin layer has a single layer structure or a multilayer structure of two or more layers.Type: GrantFiled: October 4, 2002Date of Patent: October 21, 2008Assignee: Dai Nippon Printing Co., Ltd.Inventors: Shinji Kometani, Masayasu Yamazaki, Masahiro Yuki
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Publication number: 20080170864Abstract: The disclosed device and method include varying phases of two data signals at a first predetermined frequency, performing multi-level phase modulation of a light based on the two data signals whose phases are varied at the first predetermined frequency, extracting a component having the first predetermined frequency from an optical signal subjected to the phase modulation, and controlling the phases of the two data signals based on the component extracted from the optical signal.Type: ApplicationFiled: January 14, 2008Publication date: July 17, 2008Applicant: FUJITSU LIMITEDInventors: Masato NISHIHARA, Tomoo Takahara, Yuichi Akiyama, Masahiro Yuki
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Publication number: 20080069982Abstract: Disclosed is a thermal transfer sheet that can meet demands for increased printing speed in thermal transfer, higher density of thermally transferred images, and higher quality. The thermal transfer sheet comprises a substrate and an adhesive layer and a dye layer provided in that order on one side of the substrate, wherein the adhesive layer comprises a polyvinylpyrrolidone resin and a composition for suppressing hygroscopic properties of the polyvinylpyrrolidone resin.Type: ApplicationFiled: January 20, 2005Publication date: March 20, 2008Applicant: Dai Nippon Printing Co., Ltd.Inventors: Tsuaki Odaka, Munenori Ieshige, Mitsuru Maeda, Kenichi Hirota, Masahiro Yuki
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Publication number: 20070264028Abstract: In an optical transmitter of the invention, continuous light from a light source is a (CS)RZ-D(Q)PSK modulated by two optical modulators connected in series, and a part of the optical signal output from a post-stage optical modulator is branched by an output monitor section, and the power of a preset frequency component, excluding a frequency component corresponding to a baud rate, included in an electrical spectrum acquired by photoelectrically converting the branched beams is measured. The relative phase of drive signals applied to the optical modulators is then feed-back controlled so that the power becomes a minimum. As a result, a delay shift due to a temperature change or the like between drive signals applied to respective optical modulators, can be reliably compensated.Type: ApplicationFiled: November 15, 2006Publication date: November 15, 2007Inventors: Masahiro Yuki, Kentaro Nakamura, Hiroki Ooi, Masato Nishihara
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Publication number: 20070248361Abstract: A polarization scrambler has a polarization state rotating unit rotating the polarization state of a signal light, and a rotation speed controlling unit controlling the rotation speed of the polarization state in the polarization state rotating unit on the basis of the speed and scheme of modulation of the signal light, and the value of polarization mode dispersion of a transmission path on which the signal light is to be transmitted. Degradation of the transmission quality due to PMD is more mitigated than the known techniques.Type: ApplicationFiled: September 8, 2006Publication date: October 25, 2007Applicant: Fujitsu LimitedInventors: Kentaro Nakamura, Masahiro Yuki, Takeshi Hoshida, George Ishikawa
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Publication number: 20070196599Abstract: A thermal transfer sheet that can meet demands for increased printing speed in thermal transfer, increased density of thermally transferred images, and higher quality and, at the same time, particularly can suppress fusing to image receiving sheets and abnormal transfer. The thermal transfer sheet includes a base material, a heat resistant slip layer provided on one side of the base material, and an adhesive layer and a dye layer provided in that order on the other side of the base material, wherein the adhesive layer includes a specific polyvinylpyrrolidone resin.Type: ApplicationFiled: December 27, 2004Publication date: August 23, 2007Applicant: Dai Nippon Printing Co., Ltd.Inventors: Tsuaki Odaka, Munenori Ieshige, Mitsuru Maeda, Masahiro Yuki
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Patent number: 7242519Abstract: It is an object of the present invention to provide a Raman amplifier capable of easily reducing the wavelength deviation of a Raman gain while suppressing system performance degradation, and an optical transmission system using such a Raman amplifier.Type: GrantFiled: March 30, 2004Date of Patent: July 10, 2007Assignee: Fujitsu LimitedInventors: Kenichi Torii, Takao Naito, Toshiki Tanaka, Masahiro Yuki
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Publication number: 20060263098Abstract: A phase shift unit provides a prescribed phase difference (?/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit. A low-frequency signal f0 is superimposed on one of the optical signals. A signal of which phase is shifted by ?/2 from the low-frequency signal f0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode. 2f0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit is controlled by feedback control so that the 2f0 component becomes the minimum.Type: ApplicationFiled: December 30, 2005Publication date: November 23, 2006Applicant: FUJITSU LIMITEDInventors: Yuichi AKIYAMA, Takeshi Hoshida, Akira Miura, Yutaka Kai, Hiroki Ooi, Jens Rasmussen, Kentaro Nakamura, Naoki Kuwata, Yoshinori Nishizawa, Tomoo Takahara, Masahiro Yuki
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Publication number: 20060229202Abstract: A main object of the present invention is to provide a receptor layer forming resin which makes it possible to obtain a receptor layer for a thermal transfer image receptor sheet having excellent dyeing property. The present invention achieves the above object by providing a receptor layer forming polyurethane resin for a thermal transfer image receptor sheet obtained by copolymerizing: a high molecular weight polyol having a number average molecular weight of 1000 or higher (A) ; an organic isocyanate (B); and according to need, a polyol compound having a number average molecular weight of 500 or lower (C), wherein the receptor layer forming polyurethane resin for a thermal transfer image receptor sheet meets the following requirements (1) to (4): (1) the resin has at least two glass transition temperatures; (2) at least one of the glass transition temperatures is between ?200 to 0° C., and at least one is between 20 to 100° C.Type: ApplicationFiled: March 30, 2006Publication date: October 12, 2006Inventors: Masahiro Yuki, Kazuya Yoshida, Kuniyuki Doi, Hirotoshi Kizumoto
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Publication number: 20060029391Abstract: An optical network system enabling confirmation of connection and tracking of wavelength paths at a high speed and a low cost without introducing any special hardware by having a wavelength path monitoring unit in an NMS give temporary change of optical power through a change generating unit to an optical signal S from an optical transmitting/receiving node, by having a change detecting unit confirm that this change of optical power has propagated through an optical transmission line and appeared at each node on the way, and confirming connections and monitoring the wavelength path while confirming the presence of the change.Type: ApplicationFiled: January 21, 2005Publication date: February 9, 2006Applicant: FUJITSU LIMITEDInventors: Masahiro Yuki, Toru Katagiri, Takao Naito
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Publication number: 20050221983Abstract: A thermal transfer image-receiving sheet which comprises a substrate sheet and a receiving layer comprising a polyester resin provided on at least one surface of the substrate sheet, wherein the receiving layer is a layer formed by applying a coating solution comprising 1 to 3% by weight of a modified silicone oil (I) modified with both groups of an aminoalkyl group and a polyalkylene ether group, and 0.1 to 4.0% by weight of a curing agent based on 100 parts by weight of the polyester resin, and drying the solution, 0.2 to 3% by weight of a polyether-modified silicone oil (II) and/or phenol-modified silicone oil (III) being contained in the coating solution, if desired.Type: ApplicationFiled: March 30, 2005Publication date: October 6, 2005Inventors: Masamitsu Suzuki, Mitsuru Maeda, Masahiro Yuki
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Patent number: 6942907Abstract: The present invention provides a protective layer thermal transfer sheet in which: a protective layer having a thermal transferring property is placed on at least one portion of one of the faces of a substrate sheet and the protective layer is formed by successively laminating at least a peeling layer, a plasticizer resistant layer and a heat adhesive resin layer on the substrate sheet, and in this structure, the heat adhesive resin layer is made from a polyester-urethane resin; and a printed article with the protective layer transferred thereto.Type: GrantFiled: September 16, 2004Date of Patent: September 13, 2005Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kazuhiro Masuda, Masahiro Yuki, Makoto Hashiba, Kazutoshi Awano
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Publication number: 20050064155Abstract: The present invention provides a protective layer thermal transfer sheet in which: a protective layer having a thermal transferring property is placed on at least one portion of one of the faces of a substrate sheet and the protective layer is formed by successively laminating at least a peeling layer, a plasticizer resistant layer and a heat adhesive resin layer on the substrate sheet, and in this structure, the heat adhesive resin layer is made from a polyester-urethane resin; and a printed article with the protective layer transferred thereto.Type: ApplicationFiled: September 16, 2004Publication date: March 24, 2005Inventors: Kazuhiro Masuda, Masahiro Yuki, Makoto Hashiba, Kazutoshi Awano
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Publication number: 20040190120Abstract: It is an object of the present invention to provide a Raman amplifier capable of easily reducing the wavelength deviation of a Raman gain while suppressing system performance degradation, and an optical transmission system using such a Raman amplifier.Type: ApplicationFiled: March 30, 2004Publication date: September 30, 2004Applicant: Fujitsu LimitedInventors: Kenichi Torii, Takao Naito, Toshiki Tanaka, Masahiro Yuki
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Patent number: 6692879Abstract: There is provided a thermal transfer image-receiving sheet which has dyeability high enough to realize high-speed printing and low-energy printing, permits a protective layer to be thermally transferred onto an image formed on the thermal transfer image-receiving sheet, is free from heat fusing to a thermal transfer sheet at the time of image formation on the thermal transfer image-receiving sheet, and has satisfactory separability from the thermal transfer sheet.Type: GrantFiled: October 21, 2002Date of Patent: February 17, 2004Assignee: Dai Nippon Printing Co., Ltd.Inventors: Shino Suzuki, Masahiro Yuki, Takenori Omata, Munenori Ieshige, Hidemasa Kaida
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Publication number: 20030203293Abstract: There is provided a thermal transfer image-receiving sheet which has dyeability high enough to realize high-speed printing and low-energy printing, permits a protective layer to be thermally transferred onto an image formed on the thermal transfer image-receiving sheet, is free from heat fusing to a thermal transfer sheet at the time of image formation on the thermal transfer image-receiving sheet, and has satisfactory separability from the thermal transfer sheet.Type: ApplicationFiled: October 21, 2002Publication date: October 30, 2003Inventors: Shino Suzuki, Masahiro Yuki, Takenori Omata, Munenori Ieshige, Hidemasa Kaida
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Publication number: 20030117481Abstract: The present invention aims to solve a blocking problem of an intermediate transfer recording medium and to provide an intermediate transfer recording medium having excellent separability. The intermediate transfer recording medium comprises: a sheet substrate provided with a resin layer; and a transparent sheet provided with a receptive layer. The transparent sheet provided with the receptive layer has been put on top of the sheet substrate provided with the resin layer so that the resin layer faces the transparent sheet on its side remote from the receptive layer. The resin layer is separable from the transparent sheet to transfer the transparent sheet provided with the receptive layer onto an object. The resin layer has a single layer structure or a multilayer structure of two or more layers.Type: ApplicationFiled: October 4, 2002Publication date: June 26, 2003Applicant: Dai Nippon Printing Co., Ltd.Inventors: Shinji Kometani, Masayasu Yamazaki, Masahiro Yuki
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Patent number: 5631616Abstract: A magnetic field generating device for use in MRI having a pair of pole pieces opposed at a space to each other and generating a magnetic field in the space, wherein the pole piece has a laminate structure in which a soft ferrite and a magnetic material base are disposed from the side of the space, and a layer of small magnetic permeability and high electric resistance is interposed between the soft ferrite and the magnetic material base. The soft ferrite may be lamination of the soft ferrite and silicon steel sheets. High speed image pick-up at high sensitivity and sharpness is enabled by reducing the eddy current and the remanent magnetism generated in the pole piece by the gradient magnetic field coils.Type: GrantFiled: April 5, 1995Date of Patent: May 20, 1997Assignee: TDK CorporationInventors: Kimiharu Ohta, Shigeo Hashimoto, Masahiro Yuki, Hideya Sakurai
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Patent number: 5384538Abstract: An improved magnetic field generating device for use with a medical nuclear magnetic resonance tomographic device (MRI). The device comprises a magnetic circuit formed of a pair of magnetic pole pieces connected by yoke members in opposite relationship with each other leaving a space sufficient to accommodate therebetween an object receiving a medical inspection. According to the present invention, a super-conductive coil is wound around one of the pairs of magnetic pole pieces and the dimensional relationship between the two magnetic pole pieces is varied in a variety of ways to reduce the magnetic field imbalance, with the advantages that the magnetic flux distribution becomes highly uniform throughout the space between the pair of magnetic pole pieces, the patient entering the space has no oppressive sensation and the manufacturing cost can be reduced to a considerable degree.Type: GrantFiled: July 30, 1993Date of Patent: January 24, 1995Assignee: Sumitomo Special Metals Co., Ltd.Inventors: Kimiharu Ohta, Masahiro Yuki