Patents by Inventor Kohzoh Arahara
Kohzoh Arahara 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: 5378516Abstract: An optical memory medium comprises a heat-resistant sheet a plastic resin layer having an uneven guide groove on the heat-resistant sheet, and an optical recording layer on the plastic resin layer. A method for preparing an optical memory medium comprises forming an uneven guide groove on a plastic resin existing directly or through another layer on a heat-resistant sheet, and laminating an optical recording layer on the surface of the resin layer having said uneven guide groove.Type: GrantFiled: August 12, 1992Date of Patent: January 3, 1995Assignee: Canon Kabushiki KaishaInventor: Kohzoh Arahara
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Patent number: 5160462Abstract: A method for preparing an optical memory medium having forming an uneven guide groove on a plastic resin existing directly or through another layer on a heat-resistant sheet, and laminating an optical recording layer on the surface of the resin layer having said uneven guide groove.Type: GrantFiled: February 2, 1990Date of Patent: November 3, 1992Assignee: Canon Kabushiki KaishaInventor: Kohzoh Arahara
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Patent number: 5151712Abstract: A method for transferring a viscous substance, including the steps of: providing a viscous substance capable of changing its adhesiveness corresponding to the polarity of a voltage applied thereto; disposing the viscous substance between a first electrode and a second electrode; and applying a voltage to the viscous substance plural times, thereby to reduce the adhesiveness of the viscous substance to the first electrode.Type: GrantFiled: May 23, 1990Date of Patent: September 29, 1992Assignee: Canon Kabushiki KaishaInventors: Kohzoh Arahara, Toshiya Yuasa, Takashi Kai, Noboru Tohyama, Akihiro Mouri, Kenichi Matsumoto
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Patent number: 5143546Abstract: A recording material (ink) showing a selective adhesiveness to one of a pair of electrodes applying a voltage to the recording material, is constituted by dissolving an electrolyte in a solvent. The recording material is provided with an improved stability against environmental changes, particularly against a humidity change, if the solvent is at least partly constituted by a reaction product between a ring-opening product of an alkylene oxide R--O.sub.n and glycerin or phenol, wherein R is an alkylene group and n is an integer.Type: GrantFiled: January 3, 1991Date of Patent: September 1, 1992Assignee: Canon Kabushiki KaishaInventors: Toshiya Yuasa, Kohzoh Arahara, Takashi Kai
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Patent number: 5142306Abstract: An image forming apparatus and method for forming an image includes a recording material which changes its adhesiveness in response to the polarity of the voltage applied thereto. Such a recording material can include negatively or positively changeable or inorganic particles, gas-generating solvents, a substance having a gel or sol state, and a dissociative electrolyte. The recording material is positioned between a pair of electrodes. At least one of the electrodes includes an electroconductive member and a pattern comprising an insulating material disposed on the electroconductive member. A voltage is then applied between the pair of electrodes to attach the recording material to one of the electrodes. Also provided is a pressure applicator for transferring to a transfer-receiving medium the recording material attached to the electrode.Type: GrantFiled: March 27, 1990Date of Patent: August 25, 1992Assignee: Canon Kabushiki KaishaInventors: Kohzoh Arahara, Osamu Hoshino, Noboru Tohyama, Toshiya Yuasa, Norihiko Koizumi, Hiroshi Tanioka
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Patent number: 5100468Abstract: An ink which can cause a change in its adhesiveness by an electrochemical reaction is obtained by impregnating a crosslinked substance such as polyvinyl alcohol with a liquid dispersion medium comprising an organic solvent having a relative dielectric constant of 15 or larger at 25.degree. C. such as ethylene glycol. The ink shows little characteristic change due to drying, etc., and suitably retains its fluidity when left standing in the air for a long period. The ink is supplied with a pattern of energy to be provided with an adhesive pattern, which is then transferred to a recording medium such as plain paper, directly or by the medium of an intermediate transfer medium to form an ink pattern corresponding to the energy pattern applied.Type: GrantFiled: September 7, 1988Date of Patent: March 31, 1992Assignee: Canon Kabushiki KaishaInventors: Toshiya Yuasa, Hiroshi Fukumoto, Kohzoh Arahara, Toshikazu Ohnishi, Fumitaka Kan, deceased
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Patent number: 5041843Abstract: A method for supplying a viscous substance includes the step of providing a viscous substance having an adhesive characteristic which changes in correspondence to a polarity of a voltage applied thereto. The viscous substance has an adhesive characteristic when no voltage is applied thereto and its adhesiveness is reduced when a voltage is applied thereto. The method further includes the step of supplying the viscous substance between a pair of electrodes at least one of which has a pattern comprising an electroconductive portion and an insulating pattern. The method also includes the step of applying a voltage between the first and second electrodes to thereby attach the viscous substance in an amount which corresponds to the ratio of the area of the electroconductive portion to the area of the insulating portion.Type: GrantFiled: September 27, 1989Date of Patent: August 20, 1991Assignee: Canon Kabushiki KaishaInventors: Noboru Tohyama, Kenichi Matsumoto, Kyo Miura, Kohzoh Arahara, Takashi Kai, Toshiya Yuasa
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Patent number: 5032849Abstract: A method for transferring a viscous substance includes the steps of providing a viscous substance having an adhesive characteristic which changes in correpondence to the polarity of a voltage applied thereto. The viscous substance had an adhesive characteristic when no voltage is applied thereto and its adhesiveness is reduced when a voltage is applied thereto. The method further includes the steps of disposing the viscous substance between first and second electrodes and applying a voltage between the first and second electrodes to thereby substantially attach the entirety of the viscous substance to one of the first and second electrodes.Type: GrantFiled: October 3, 1989Date of Patent: July 16, 1991Assignee: Canon Kabushiki KaishaInventors: Kohzoh Arahara, Hiroshi Fukumoto
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Patent number: 5019835Abstract: An image forming apparatus comprises: an electroconductive substrate; an electroconductive member disposed opposite to the electroconductive substrate; a plate-forming unit for forming an insulating pattern on the electroconductive substrate; a supplier for providing a recording material between the electroconductive substrate and the electroconductive member, the recording material being capable of changing its adhesiveness corresponding to the polarity of a voltage applied thereto; and a voltage source for applying a voltage between the electroconductive substrate and the electroconductive member.Type: GrantFiled: October 3, 1989Date of Patent: May 28, 1991Assignee: Canon Kabushiki KaishaInventors: Kohzoh Arahara, Kenichi Matsumoto, Hiroshi Fukumoto, Takashi Kai, Osamu Hoshino, Toshiya Yuasa, Noboru Tohyama, Motokazu Kobayashi
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Patent number: 5017223Abstract: A recording material including at least a liquid dispersion medium and an electrolyte contained therein; the electrolyte providing substantially no halogen ion in the liquid dispersion medium under electrolytic dissociation; the recording material being capable of changing its adhesiveness when imparted with a voltage by means of a pair of electrodes, thereby to selectively adhere to either one of the pair of electrodes.Type: GrantFiled: July 27, 1989Date of Patent: May 21, 1991Assignee: Canon Kabushiki KaishaInventors: Motokazu Kobayashi, Kohzoh Arahara, Toshiya Yuasa, Takashi Kai, Hiroshi Fukumoto
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Patent number: 4972200Abstract: An image forming method and apparatus is disclosed an ink capable of changing its adhesiveness corresponding to the polarity of a voltage applied thereto is provided. The ink is used for image formation by means of an image-forming apparatus with at least a pair of electroconductive members. The residual ink left between the pair of electroconductive members is removed by; and applying a voltage to the residual ink so as to reduce the adhesiveness of the ink disposed on one of the pair of electroconductive members, thereby to remove the ink from the electroconductive member and transfer it to another electroconductive member.Type: GrantFiled: March 20, 1989Date of Patent: November 20, 1990Assignee: Canon Kabushiki KaishaInventors: Kohzoh Arahara, Osamu Hoshino
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Patent number: 4945833Abstract: A printing process using an ink which is substantially non-adhesive but can be imparted with an adhesiveness when subjected to a pH change. In the printing process, the ink is subjected to a pH change to be provided with an adhesiveness to a desired depth, and the resultant adhesive ink is supplied to a printing plate having a pattern of ink receptibility to form thereon an ink pattern corresponding to the ink receptibility pattern. The ink pattern is then transferred to a transfer-receiving medium such as plain paper to form thereon a recorded image. In the above-mentioned printing process, a uniform thin ink layer can be supplied to the printing plate by chemically regulating the amount of the ink to be supplied.Type: GrantFiled: December 21, 1988Date of Patent: August 7, 1990Assignee: Canon Kabushiki KaishaInventors: Kohzoh Arahara, Tetsuro Fukui, Hiroshi Fukumoto, Yoshio Takasu, Tadashi Sato, Fumitaka Kan
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Patent number: 4920361Abstract: An image recording method and an image recording apparatus using an ink which is substantially non-adhesive but can be imparted with an adhesiveness when subjected to a pH change. In the image recording method, the ink is subjected to a pattern of pH change to be provided with an adhesive pattern, which is then transferred to a recording medium, such as plain paper, directly or by the medium of an intermediate transfer medium to form an ink pattern corresponding to the pH change pattern.Type: GrantFiled: June 24, 1988Date of Patent: April 24, 1990Assignee: Canon Kabushiki KaishaInventors: Kohzoh Arahara, Hiroshi Fukumoto, Toshiya Yuasa, Toshikazu Ohnishi, Fumitaka Kan, deceased, Hiroshi Tanioka, Norihiko Koizumi, Noboru Tohyama
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Patent number: 4838940Abstract: An ink which can be imparted with an adhesiveness on application of an electric current is obtained by impregnating a crosslinked substance such as guar gum or polyvinyl alcohol compound with a liquid dispersion medium such as water. The ink is supplied with a pattern of energy to be provided with an adhesive pattern, which is then transferred to a recording medium, such as plain paper, directly or by the medium of an intermediate transfer medium to form an ink pattern corresponding to the energy pattern applied. The ink further comprises a buffer action-imparting substance and is excellent in storage stability and stability of performances during a continuous use.Type: GrantFiled: February 18, 1988Date of Patent: June 13, 1989Assignee: Canon Kabushiki KaishaInventors: Fumitaka Kan, Kohzoh Arahara, Noboru Tohyama, Toshiya Yuasa, Hiroshi Fukumoto
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Patent number: 4702988Abstract: A toner for developing electrostatic latent images is produced by a process comprising the steps of: (a) preliminarily dispersing a monomer composition comprising at least a polymerizable monomer and a colorant in a liquid dispersion medium which is substantially mutually-insoluble with the monomer and contains a fine powdery dispersion stabilizer, thereby to form a liquid dispersion containing the preliminarily dispersed monomer composition; (b) pressurizing the liquid dispersion up to a pressure of 10 kg/cm.sup.2 or above; (c) ejecting the dispersion into a low pressure section to form particles of the monomer composition; and (d) subjecting the particles of the monomer composition to suspension polymerization, thereby to produce toner particles.Type: GrantFiled: February 25, 1987Date of Patent: October 27, 1987Assignee: Canon Kabushiki KaishaInventors: Hiroshi Fukumoto, Toshikazu Ohnishi, Kohzoh Arahara
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Patent number: 4405687Abstract: A polyborosiloxane composition to be used for the formation of an insulating layer on an electric conductor comprises (A) a polyborosiloxane produced by the reaction of boric acid, a boric acid derivative, or a halogenated boron with a silane compound and a silicone oil, (B) a silicone resin or a synthetic resin having a nitrogen-containing heterocyclic ring in the molecule, (C) an inorganic filler, and (D) a common solvent for (A) and (B). An insulated electric wire excellent in thermal resistance is obtained by applying the composition to an electric conductor and baking the applied layer of the composition.Type: GrantFiled: April 9, 1982Date of Patent: September 20, 1983Assignee: Showa Electric Wire & Cable Co., Ltd.Inventors: Minoru Morita, Etsuo Hosokawa, Kohzoh Arahara