Patents by Inventor Masatsune Kobayashi
Masatsune Kobayashi 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: 4632703Abstract: A recording liquid comprises a recording agent, water and a water-soluble organic solvent as essential components, wherein said recording agent comprises at least one of the dyes represented by the formula (A) shown below: ##STR1## (wherein [Ph] represents a phthalocyanine skeleton at the center of which a metal atom may be coordinated, X represents an alkali metal or NH.sub.4, a and b each independently represent an integer of 1 to 3 satisfying the relation of 2.ltoreq.a+b.ltoreq.4, Q represents a group --SO.sub.2 OR.sub.1 or a group --SO.sub.2 NR.sub.2 R.sub.3, where R.sub.1 represents an alkyl or an alicyclic group having not more than 15 carbon atoms which may be branched or an aralkyl group having not more than 15 carbon atoms, R.sub.2 and R.sub.3 each independently represent a group --CH.sub.2 CH.sub.2 O).sub.n R.sub.4, a group --CH.sub.2 CHOH).sub.n R.sub.Type: GrantFiled: March 23, 1984Date of Patent: December 30, 1986Assignee: Canon Kabushiki KaishaInventors: Shoji Koike, Tsuyoshi Eida, Masatsune Kobayashi, Yasumasa Yokoyama, Tomoko Komori
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Patent number: 4627875Abstract: A recording liquid comprises C.I.Acid Red 8 as a recording agent for forming an image and a liquid medium comprising at least(a) a member selected from the group consisting of polyethylene glycol, polyethylene glycol mono methylether and a mixture thereof,(b) a member selected from the group consisting of diethylene glycol, sulfolane and a mixture thereof,(c) a member selected from the group consisting of N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone and a mixture thereof, and(d) water.Type: GrantFiled: February 10, 1986Date of Patent: December 9, 1986Assignee: Canon Kabushiki KaishaInventors: Masatsune Kobayashi, Tsuyoshi Eida, Shoji Koike, Keiko Nakousai
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Patent number: 4626284Abstract: The recording liquid containing at least one of the naphthelenediazoic dyes shown by general formula (I) or (II): ##STR1## as defined in the claim, and a liquid medium for dissolving or dispersing the dye.The recording liquid of this invention has the viscosity and surface tension in the proper ranges, does not cause clogging discharging orifices of an ink-jet recorder and shows good storage stability. Furthermore, the recording liquid gives recorded images excellent in fixing speed, light resistance, water resistance, abrasion resistance and resolution.Type: GrantFiled: October 1, 1984Date of Patent: December 2, 1986Assignees: Mitsubishi Chemical Industries Ltd., Canon Inc.Inventors: Tokuya Ohta, Masatsune Kobayashi, Konoe Miura, Hiroshi Takimoto
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Patent number: 4599112Abstract: A recording liquid containing as a coloring component a copper phthalocyanine dye having at least one alkali metal sulfonate substituent is provided. The recording liquid is characterized in that the ratio of the integrated peak areas (A/B) in a liquid chromatogram of said dye is at least 1/6, wherein, provided that the retention time of the main peak is taken as 1.00, A and B represent the integrated peak area of the relative retention time of from 0 to 0.80 and that of from 0.85 to 4.00, respectively.Type: GrantFiled: October 31, 1984Date of Patent: July 8, 1986Assignee: Canon Kabushiki KaishaInventors: Yasumasa Yokoyama, Tomoko Komori, Tsuyoshi Eida, Shoji Koike, Masatsune Kobayashi
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Patent number: 4557761Abstract: A recording liquid comprising coloring matter, which is an image-forming component, and a liquid medium for dissolving or dispersing the coloring matter, the recording liquid being characterized by containing at least one of the dyes represented by the following general formula (A), as an image-forming component,Q.sup.1 -N=N--Q.sup.2 --N=N--Q.sup.3 (A)wherein Q.sup.1 and Q.sup.3 each represent a substituted phenyl or naphthyl group having at least one SO.sub.3 M substituent and Q.sup.2 represents a substituted naphthyl group having at least one SO.sub.3 M substituent, M being a base selected from Na, K, Li, NH.sub.4, and amine salt cations.Type: GrantFiled: November 17, 1983Date of Patent: December 10, 1985Assignee: Canon Kabushiki KaishaInventors: Masatsune Kobayashi, Tsuyoshi Eida, Shoji Koike, Yasumasa Yokoyama, Tomoko Komori
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Patent number: 4517244Abstract: A recording material comprises a base material containing a highly water-absorptive resin and being in the form of a film.Type: GrantFiled: July 29, 1982Date of Patent: May 14, 1985Assignee: Canon Kabushiki KaishaInventors: Masatsune Kobayashi, Masahiro Haruta, Tsuyoshi Eida, Tokuya Ohta
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Patent number: 4505749Abstract: In a process for forming color images using more than one kind of color ink including black ink, the dyes in the color ink used have similar chromatographic characteristics. Preferably any difference of the Rf value of paper chromatography between any of the two dyes is not more than 0.30.Type: GrantFiled: June 24, 1983Date of Patent: March 19, 1985Assignee: Canon Kabushiki KaishaInventors: Kazue Kanekiyo, Masatsune Kobayashi, Yasumasa Yokoyama, Tsuyoshi Eida, Tomoko Komori, Shoji Koike
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Patent number: 4435717Abstract: A liquid jet recording process comprising exerting thermal energy to a recording liquid to form liquid droplets and performing recording with these liquid droplets, is characterized in that said recording liquid comprises at least a dye having in the molecule 1 to 5 members selected from the group consisting of sulfo group and carboxyl group, 1 to 4 azo groups, 1 to 6 hydroxyl groups, 0 to 2 imino groups, and no amino group and a thermal decomposition point of 250.degree. C. or more, and a liquid medium therefor. A recording liquid comprises at least a dye, as a recording agent, having in the molecule 1 to 5 members selected from the group consisting of sulfo group and carboxyl group, 1 to 4 azo groups, 1 to 6 hydroxyl groups, 0 to 2 imino groups, and no amino group and a thermal decomposition point of 250.degree. C. or more, and a liquid medium therefor.Type: GrantFiled: March 22, 1982Date of Patent: March 6, 1984Assignee: Canon Kabushiki KaishaInventors: Tsuyoshi Eida, Masatsune Kobayashi
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Patent number: 4395287Abstract: A liquid recording material comprises a recording agent for forming a recording image and a liquid vehicle for dissolving or dispersing said recording agent therein and is characterized in that a polyalkylene glycol having an average molecular weight of 150 to 350 (A component) and a polyalkylene glycol having an average molecular weight of 400 to 750 (B component) are incorporated in combination in said material.Type: GrantFiled: November 23, 1981Date of Patent: July 26, 1983Assignee: Canon Kabushiki KaishaInventors: Masatsune Kobayashi, Seiko Matsumoto, Masahiro Haruta, Tokuya Ohta
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Patent number: 4391639Abstract: A recording liquid is characterized by containing as a dye a compound represented by the formula ##STR1## wherein R.sub.1 represents hydrogen or C.sub.1 -C.sub.2 alkyl, R.sub.2 and R.sub.3 each represent hydrogen, C.sub.1 -C.sub.2 alkyl, or C.sub.1 -C.sub.2 alkoxy, R.sub.4 and R.sub.5 represent hydrogen or sulfo in salt form with base, and Q.sub.1 represents naphthyl substituted by hydroxyl and by sulfo in salt form with base.Type: GrantFiled: September 2, 1982Date of Patent: July 5, 1983Assignee: Canon Kabushiki KaishaInventor: Masatsune Kobayashi
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Patent number: 4306245Abstract: A liquid jet recording device is provided with a cleaning protective means for cleaning and protecting the orifice. This means is provided at a reset position lying at one end of the scanning shaft of the device.Type: GrantFiled: September 17, 1979Date of Patent: December 15, 1981Assignee: Canon Kabushiki KaishaInventors: Yukio Kasugayama, Masatsune Kobayashi, Shigeyuki Matsumoto, Yoshihumi Hattori
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Patent number: 4285575Abstract: An image display device comprises a cell container, at least a pair of electrodes, an electrically responsive electrochromic medium accommodated in said cell container, said electrochromic medium comprising a complexon, Fe.sup.2+ ion and at least one metal ion other than Fe.sup.2+ ion.Type: GrantFiled: February 9, 1979Date of Patent: August 25, 1981Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Imataki, Michiko Takahashi, Masatsune Kobayashi, Tokuya Ohta
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Patent number: 4212518Abstract: An image display device comprises in combination:a cell container,at least a pair of electrodes,an electrically responsive electrochromic medium accommodated in said cell container, said electrochromic medium comprising a complexion.Type: GrantFiled: March 28, 1978Date of Patent: July 15, 1980Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Imataki, Masatsune Kobayashi, Tokuya Ohta