Patents Assigned to Tomoegawa Paper Co.
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Patent number: 6839475Abstract: The present invention provides an optical interconnection apparatus free from attaching, fixing or adhering when come into contact with each other or with another material, and easy to handle. The optical interconnection apparatus according to the invention comprises a substrate (1), a protective resin layer (2) composed of a silicone based rubber-like or gel-like material on one side or both sides of said substrate, and plural optical fibers (4) which are routed two-dimensionally routed on the substrate and provided at ends thereof with end portions (5) adapted to permit optical interconnections, and said optical fibers being held in place by said protective resin layer, wherein a non-tacky surface layer (8) is provided on the surface of said protective resin layer. The non-tacky surface layer is preferred to be composed of a silicone-based material and having a kinetic friction coefficient of 3.0 or less.Type: GrantFiled: April 26, 2001Date of Patent: January 4, 2005Assignees: Tomoegawa Paper Co., Ltd., Nippon Telegraph and Telephone CorporationInventors: Ritsu Kawase, Ken Sukegawa, Tatsushi Kobayashi, Koichi Arishima, Mamoru Hirayama
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Publication number: 20040223224Abstract: A light diffusing layer has a resin matrix and spherical fillers having different refractive index from the resin matrix, and a thickness of the light diffusing layer T (&mgr;m), a difference of refractive index &Dgr;n between the resin matrix and the spherical fillers, and a volume content Cv (%) of the spherical fillers to the light diffusing layer satisfy the formula 20≦T×&Dgr;n×Cv≦75. Furthermore, an adhesive can be contained in the resin matrix.Type: ApplicationFiled: May 3, 2004Publication date: November 11, 2004Applicant: TOMOEGAWA PAPER CO., LTD.Inventors: Makoto Murata, Kensaku Higashi
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Patent number: 6815021Abstract: The present invention provides a recording medium for ink jet printers in which superior image recording quality and color stability are exhibited. In a recording medium for ink jet printers in which an ink receiving layer contained at least pigment and binder resin is provided on a supporting material, partially saponified PVA having a degree of saponification of 85.0 to 73.0 mol % and a degree of polymerization of 300 to 1500, is contained in the ink receiving layer as a color stability improving component.Type: GrantFiled: March 30, 2000Date of Patent: November 9, 2004Assignees: Seiko Epson Corporation, Tomoegawa Paper Co., Ltd.Inventors: Takayuki Ishikawa, Nobuhiro Kubota, Minoru Tsuchida, Shigeki Asai, Takeshi Yoshimoto, Kiyoshi Iwamoto, Jun Sugiyama, Hiroyuki Onishi, Yukari Ishikawa
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Publication number: 20040197538Abstract: A paper string reticulated structure includes a paper string made from a base paper containing soft wood kraft pulp as a main raw material. A vegetation net, an agricultural net, a construction net, and an article container such as a shopping bag, cloth basket, and vegetable basket can be made from the paper string reticulated structure.Type: ApplicationFiled: September 25, 2003Publication date: October 7, 2004Applicant: TOMOEGAWA PAPER CO., LTD.Inventors: Motoshi Okugawa, Toshiaki Yano
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Patent number: 6777040Abstract: A recording sheet for an ink jet printer can improve both recording properties such as vividness of images, printing density, etc., and shelf life such as light resistance of images, ozone resistance, etc. The recording sheet for an ink jet printer comprises a base material and an ink receiving layer provided on at least one surface of the base material, in which the recording sheet contains oligosaccharide and divalent metallic salt.Type: GrantFiled: August 29, 2002Date of Patent: August 17, 2004Assignee: Tomoegawa Paper Co., LTDInventors: Fumikazu Tatsuhashi, Nobuhiro Kubota, Shigeki Asai, Senichi Yoshizawa, Kazushige Katagiri, Minoru Tsuchida
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Patent number: 6777070Abstract: An anti-reflection material and a polarization film which exhibit superior anti-reflection properties by preventing external light such as sunlight, fluorescent light, etc., from being reflected on a display, which yield a clear image without sparkling and reduces image contrast, and which exhibit superior wear resistance, chemical resistance, and contamination resistance, as well as exhibit optical stability. A hard coat layer is provided on one surface or two surfaces of a transparent substrate directly or via another layer, and an anti-reflection film having a lower refraction index than the hard coat layer is further provide on the hard coat layer.Type: GrantFiled: June 21, 2000Date of Patent: August 17, 2004Assignee: Tomoegawa Paper Co., Ltd.Inventors: Chikara Murata, Kazuya Ohishi, Yasuhiro Matsunaga, Tomohisa Yamamoto
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Patent number: 6770370Abstract: An adhesive composition for semiconductor device, comprising 10 to 30% by weight of a reactive elastomer (A), 40 to 65% by weight of an epoxy resin (B) having two or more glycidyl ether groups, a phenol resin (C) and a curing accelerator (D), wherein a ratio of the epoxy resin (B) to the phenol resin (C) is within a range from 1:0.6 to 1:1 in terms of a functional group equivalent ratio, and an adhesive sheet for a semiconductor device using the same are provided. The composition and the sheet are superior in reflow resistance and short-time and low-temperature bonding without lowering characteristics such as heat resistance, low hygroscopicity, high adhesion and electrical insulating properties of an epoxy resin cured article.Type: GrantFiled: August 5, 2002Date of Patent: August 3, 2004Assignee: Tomoegawa Paper Co., Ltd.Inventors: Naoji Suzuki, Osamu Oka, Jun Tochihira, Akihiro Maeda
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Patent number: 6764797Abstract: A toner for MICR comprises at least a binder resin, magnetite particles comprising a mixture of granular magnetite and acicular magnetite, and a wax, wherein a ratio by weight of said acicular magnetite in said magnetite particles is 0.1-0.5 to the granular magnetite of 1.0, said magnetite particles are contained in an amount of 15-50% by weight in the toner, said granular magnetite has residual magnetization of 5-15 emu/g and saturation magnetization of 70-95 emu/g, and said acicular magnetite has residual magnetization of 20-50 emu/g and saturation magnetization of 70-95 emu/g.Type: GrantFiled: March 8, 2002Date of Patent: July 20, 2004Assignee: Tomoegawa Paper Co., Ltd.Inventors: Takayuki Sano, Tatsuru Matsumoto
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Patent number: 6760086Abstract: An attachment film for an electronic display, which film is used for adjusting the optical transmissivity in a variety of electronic displays and adjusting color shades. It permits the simple and easy adjustment of the reflection of a fluorescent lamp and sunlight in and from the screen thereof and can prevent the formation of air bubbles in an adhesive layer thereof. The attachment film includes a transparent substrate and an adhesive layer which contains carbon black dispersed therein and formed on one surface of a transparent substrate.Type: GrantFiled: March 22, 1999Date of Patent: July 6, 2004Assignee: Tomoegawa Paper Co., Ltd.Inventors: Takuma Hattori, Masami Yanagisawa, Keiichiro Haji
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Patent number: 6747719Abstract: The invention relates to a reflecting plate for a reflection type liquid crystal display device capable of reproducing paper whiteness, a production process thereof, and a reflection type liquid crystal display device making use of the reflecting plate. The light reflecting plate comprises a substrate, a single-layer powder coating provided on the substrate by laying powder particles in a state of a monoparticle layer on the substrate to fix them, and a thin metal film laminated directly or via a primer coating on the individual particles of the single-layer powder coating. It is produced by successively performing the steps of providing a binder layer having tackiness on a substrate, laying powder particles in a state of a monoparticle layer on the binder layer having tackiness to fix them, and laminating a thin metal film on the single-layer powder coating formed in the late step.Type: GrantFiled: December 17, 2001Date of Patent: June 8, 2004Assignee: Tomoegawa Paper Co., Ltd.Inventor: Kensaku Higashi
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Patent number: 6733940Abstract: The present invention provides a toner for MICR suitable for use in a printer for a non-magnetic monocomponent developing system, which does not produce scratches on a developing sleeve when used in the printer for the non-magnetic monocomponent developing system and has a resistance against sliding friction with a magnetic head, and also causes no reading errors because of a proper signal strength and imparts satisfactory image characteristics (for example, with respect to image density and fogging). The toner comprises a binder resin, a magnetic material and a wax, and has a BET specific surface area within a range from 0.70 to 1.00 m2/g.Type: GrantFiled: April 2, 2002Date of Patent: May 11, 2004Assignee: Tomoegawa Paper Co., Ltd.Inventors: Masamoto Terao, Akira Fujiwara
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Publication number: 20040079282Abstract: An adhesive layer is provided on a base material in the shape of an elongated film, powder particles are adhered thereon, and then other powder particles and media vibrated in a container are contacted with this adhesive layer. Next, the powder particles are embedded on the surface of the adhesive layer as a monolayer in which part of the powder particle protrudes, so as to form a laminate, and excess powder particles adhered to the laminate are removed. Therefore, a monolayer powder film, consisting of many powder particles embedded as a monolayer so that part thereof protrudes, is produced.Type: ApplicationFiled: October 22, 2003Publication date: April 29, 2004Applicant: Tomoegawa Paper Co., Ltd.Inventors: Akihiro Sano, Kensaku Higashi
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Publication number: 20040071883Abstract: A method and apparatus for coating a thin film which comprises supplying an organic solvent-based coating solution onto the surface of a transferring member from which the coating solution is then allowed to come in contact with a film base so that it is applied thereto while the coating solution which has been supplied onto the transferring member is being partially recovered for reuse.Type: ApplicationFiled: May 29, 2003Publication date: April 15, 2004Applicants: FUJI PHOTO FILM CO., LTD., TOMOEGAWA PAPER CO., LTD.Inventors: Tomonari Ogawa, Kazuhiko Nojo, Tsutomu Kurokoshi
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Patent number: 6712525Abstract: An optical inter-connection apparatus according to this invention has plural optical fibers 4, which are routed in a two-dimensional plane and are provided at opposite ends thereof with end portions 5 adapted to permit optical interconnections thereto, and at least one protective resin layer 2 by which the optical fibers are held in place. The protective resin layer 2 is formed from a silicone-base material curable through a condensation reaction with liberation of an oxime or liberation of an alcohol or from a silicone-base material, which is curable by crosslinking through a hydrosilation reaction, and an adhesion promoter, and is joined with a base 1 or another protective resin layer via an adhesive layer 3. The adhesive layer comprises an acrylic pressure-sensitive adhesive. As an alternative, the adhesive layer may comprise a silicone-base pressure-sensitive adhesive which is curable by crosslinking through a hydrosilation reaction.Type: GrantFiled: May 9, 2001Date of Patent: March 30, 2004Assignee: Tomoegawa Paper Co., Ltd.Inventors: Ritsu Kawase, Kyoichi Sasaki, Ken Sukegawa, Tatsushi Kobayashi
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Publication number: 20040053122Abstract: A separator for a lithium ion secondary battery, comprising a porous base material containing polyolefin, and a porous layer containing a vinylidene fluoride resin as a main component provided on at least one surface of the porous base material is excellent in electrolytic solution retention properties, adhesion and bondability to electrodes, and dimensional stability, and also has high and uniform ionic conductivity, reduced interfacial resistance to electrodes, and shutdown properties. A lithium ion secondary battery having excellent capacity characteristics, charge and discharge characteristics, cycle characteristics, safety and reliability can be provided by using the separator.Type: ApplicationFiled: September 11, 2003Publication date: March 18, 2004Applicant: Tomoegawa Paper Co., Ltd.Inventors: Masahide Sugiyama, Hiroki Totsuka, Shuuji Mitani, Masanori Takahata
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Patent number: 6706457Abstract: A non-magnetic single-component toner comprises: silica A having a specific surface area of 30 to 70 m2/g as determined by a BET method, and having a surface which is at least treated with aminosilane, silica B having a specific surface area of 100 m2/g or more, and having a surface which is treated with silicone oil, silicone oil, and toner particles containing a binder resin and a colorant wherein silica A, silica B, silicon oil are adhered to surfaces of the toner particles, so that the toner that has suitable charging properties and anti-fusing and long life under all environmental atmosphere, and allows the obtaining of stable images having minimal back ground fogging, proper image density, no image density unevenness, and no voids in image (particularly on thick paper), and superior solid black reproducibility.Type: GrantFiled: November 13, 2001Date of Patent: March 16, 2004Assignee: Tomoegawa Paper Co., Ltd.Inventor: Mitsuhito Koumura
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Patent number: 6677094Abstract: By reducing non-transferred toner on a photosensitive member, image density is sufficiently maintained and fogging in the non-imaged portion is prevented. The developing agent for non-magnetic monocomponent development is a toner comprising toner particles and an external additive adhered on the surface of the toner particles, wherein the external additive comprises inorganic fine particles (A), which are surface-treated with aminosilane and dimethylpolysiloxane and have a polarity reverse to that of the toner, and inorganic fine particles (B) having the same polarity as that of the toner.Type: GrantFiled: March 26, 2002Date of Patent: January 13, 2004Assignee: Tomoegawa Paper Co., Ltd.Inventor: Takahiro Mita
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Patent number: 6660326Abstract: An adhesive layer is provided on a base material in the shape of an elongated film, powder particles are adhered thereon, and then other powder particles and media vibrated in a container are contacted with this adhesive layer. Next, the powder particles are embedded on the surface of the adhesive layer as a monolayer in which part of the powder particle protrudes, so as to form a laminate, and excess powder particles adhered to the laminate are removed. Therefore, a monolayer powder film, consisting of many powder particles embedded as a monolayer so that part thereof protrudes, is produced.Type: GrantFiled: July 26, 2001Date of Patent: December 9, 2003Assignee: Tomoegawa Paper Co. Ltd.Inventors: Akihiro Sano, Kensaku Higashi
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Patent number: 6656544Abstract: A recording medium for ink jet printers having superior effects in preventing recorded image deterioration such as lowering of image clarity, decrease in density, change in color tone, etc., under high temperature and high humidity, is provided. An ink receiving layer is formed on a base material by coating acrylic copolymer containing at least (meth)acrylate having a solubility parameter (&dgr;) of 15.0 to 23.0 MPa½ as a copolymerizing component, and thereby a recording medium for ink jet printers is produced.Type: GrantFiled: June 26, 2001Date of Patent: December 2, 2003Assignee: Tomoegawa Paper Co., LTDInventors: Takayuki Ishikawa, Nobuhiro Kubota, Shigeki Asai, Minoru Tsuchida, Kiyoshi Iwamoto, Jun Sugiyama, Hiroyuki Onishi, Yukari Ishikawa
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Patent number: 6652092Abstract: A superior recording sheet for an ink jet printer which sufficiently satisfies various property requirements such as light resistance of images, ozone resistance, etc., is provided. The recording sheet for an ink jet printer comprises at least an ink receiving layer and a glossiness adjusting layer on a base material, the ink receiving layer includes an organic acid metallic salt and a cationic dye fixing agent, and the glossiness adjusting layer comprises a fine particle pigment and binder resin.Type: GrantFiled: June 20, 2002Date of Patent: November 25, 2003Assignees: Seiko Epson Corporation, Tomoegawa Paper Co., LtdInventors: Jun Sugiyama, Fumikazu Tatsuhashi, Nobuhiro Kubota, Minoru Tsuchida