Patents by Inventor Mitsuru Kondo
Mitsuru Kondo 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: 4828957Abstract: Disclosed is a two-color heat-sensitive recording material which comprises a base sheet and a recording layer of single-layer or multi-layer structure formed on the base sheet, the recording layer comrising:(a) a diazonium salt,(b) a basic leuco dye,(c) a 2-hydroxy-3-naphthoic acid derivative which acts as a coupler compound for causing the diazonium salt to develop color when heated and which also acts as a color developing material for causing the basic leuco dye to develop color when heated, and(d) a basic substance, wherein the diazonium salt and the basic leuco dye each form a color upon application of heat, thereby giving the first image of a mixed color, and, then, after irradiation of an active ray to decompose the diazonium salt, the basic leuco dye alone forms its own color upon application of heat, thereby giving the second image whose color is different from the mixed color of the first image.Type: GrantFiled: May 26, 1987Date of Patent: May 9, 1989Assignee: Kanzaki Paper Manufacturing Company, Ltd.Inventors: Naoki Yonese, Tosaku Okamoto, Mitsuru Kondo
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Patent number: 4803193Abstract: In a heat-sensitive recording material comprising on a substrate a recording layer containing a colorless or pale-colored basic dye and an electron accepting reactant material, the heat-sensitive recording material which is characterized in that the basic dye comprises at least one chromeno compound represented by the formula [I] below ##STR1## wherein G and R.sub.1 .about.R.sub.4 are defined in the specification.Type: GrantFiled: December 23, 1987Date of Patent: February 7, 1989Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Nobuo Kanda, Yukihiro Abe, Mitsuru Kondo
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Patent number: 4794101Abstract: In a heat-sensitive recording material incorporating a colorless or pale-colored basic dye and a color acceptor which is reactive with the dye to form a color when contacted therewith, the recording material characterized in that (a) as the basic dye are used 100 parts by weight of a specific phthalide derivative of the formula [I] and 20 to 100 parts by weight of a specific black color-forming fluoran derivative of the formula [II], (b) as the color acceptor is used a polyvalent metal salt of an aromatic carboxylic acid and (c) a recording sensitizer is further used, and whereby the resulting record images are at least 0.75 in PCS value at 800 nm.Type: GrantFiled: June 8, 1987Date of Patent: December 27, 1988Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Nobuo Kanda, Kimie Tsuboi, Fumio Seyama, Mitsuru Kondo
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Patent number: 4770973Abstract: In a heat-sensitive recording material which comprises a substrate and a heat-sensitive recording layer thereon containing a diazonium salt and coupler compound, the heat-sensitive recording material characterized in that the coupler compound comprises at least one compound represented by the formula [I] below ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are each hydrogen atom, halogen atom, alkyl or alkoxyl; R.sub.9 is hydrogen atom or alkyl; X and Y are each hydrogen atom, --OR.sub.10 or --N(R.sub.11)(R.sub.12), R.sub.10, R.sub.11 and R.sub.12 being each hydrogen atom, alkyl, alicyclic group, aryl or aralkyl, these R.sub.10, R.sub.11 and R.sub.12 may have a substituent selected from among halogen atom, alkyl and alkoxy, R.sub.11 and R.sub.12 may link together to form a heteroring, or, one or both of R.sub.11 and R.sub.12 may form a heteroring together with an adjacent benzene ring; n is 0 or 1.Type: GrantFiled: November 7, 1986Date of Patent: September 13, 1988Assignee: Kanzaki Paper Manufacturing LimitedInventors: Nobuo Kanda, Katsuhiko Ishida, Tosaku Okamoto, Mitsuru Kondo
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Patent number: 4761396Abstract: In a heat-sensitive recording material comprising a colorless or pale-colored basic dye and an electron accepting reactant material which is reactive with the basic dye to form a color when contacted therewith, and comprising at least one of the specific phthalide derivatives as the basic dye, the heat-sensitive recording material characterized in that at least one compound selected from the group consisting of the specific fluorene derivatives and the specific p-phenylenediamine derivatives is further contained in the recording material.Type: GrantFiled: February 5, 1987Date of Patent: August 2, 1988Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Nobuo Kanda, Kazuko Hirahara, Mitsuru Kondo
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Patent number: 4748148Abstract: A new phthalide derivative useful as a colorless chromogenic material has the general formula: ##STR1## wherein R.sub.1 to R.sub.10, X.sub.1, X.sub.2, Y.sub.1, Y.sub.2, Z, a and b have the same meaning as defined hereinbefore.Type: GrantFiled: November 13, 1986Date of Patent: May 31, 1988Inventors: Mitsuru Kondo, Tomoyuki Okimoto, Nobuo Kanda
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Patent number: 4746645Abstract: Disclosed is a heat-sensitive recording material comprising a base sheet and a heat-sensitive record layer formed over the base sheet and comprising a colorless or pale-colored basic dye and a color developing material capable of forming a color when contacted with the dye, the heat-sensitive recording material being characterized in that the heat-sensitive record layer contains as the color developing material at least one multi-valent metal salt of a halophthalic acid derivative represented by the formula ##STR1## wherein R represents a divalent saturated or unsaturated C.sub.2 -C.sub.12 aliphatic hydrocarbon group which may optionally have a hydroxyl, C.sub.1 -C.sub.3 acyloxy or phenyl group as a substituent or a divalent saturated or unsaturated C.sub.4 -C.sub.6 aliphatic hydrocarbon group containing one or two ether bonds, X is a halogen atom and n is an integer of 1-4.Type: GrantFiled: December 16, 1986Date of Patent: May 24, 1988Assignees: Kanzaki Paper Manufacturing Company, Limited, Sugai Chemical Industry Co., Ltd.Inventors: Teijiro Kitao, Mitsuru Kondo, Toshitake Suzuki, Masayuki Omatsu, Hironori Fujii, Kenji Minami
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Patent number: 4731353Abstract: Disclosed is a heat-sensitive recording material comprising a base sheet and a heat-sensitive record layer formed over the base sheet and comprising a colorless or pale-colored basic dye and a color developing material capable of forming a color when contacted with the dye, the heat-sensitive recording material being characterized in that the heat-sensitive record layer contains as the color developing material at least one multi-valent metal salt of an indole-2-carboxylic acid derivative represented by the formula ##STR1## wherein R.sub.1 through R.sub.6 are hydrogen or other substituent. The heat-sensitive recording material is resistant to plasticizer and diazo developer, and also is suitable for high-speed recording.Type: GrantFiled: February 12, 1987Date of Patent: March 15, 1988Assignee: Kanzaki Paper Manufacturing Company, LimitedInventors: Fumio Hama, Nobuo Kanda, Mitsuru Kondo
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Patent number: 4729984Abstract: An improved heat sensitive recording sheet having a wealth of high speed recording characteristics and remarkably improved resistances against plasticizers and against diazo developers which contain at least a 3,4-dihydroxydiphenyl sulfone derivative.Type: GrantFiled: August 4, 1986Date of Patent: March 8, 1988Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Fumio Hama, Masayuki Omatsu, Mitsuru Kondo
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Patent number: 4730057Abstract: A new phthalide derivative useful as a colorless chromogenic material has the following formula: ##STR1## wherein A and n have the same meaning as defined hereinbefore.Type: GrantFiled: January 10, 1986Date of Patent: March 8, 1988Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Nobuo Kanda, Naoki Yonese, Mitsuru Kondo
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Patent number: 4713488Abstract: Cycloalkyl aminophenol derivatives are produced by reacting o-, m- or p-aminophenol with a cycloalkanone having 5 to 12 carbon atoms in the presence of a reducing agent and preferably with the addition of an acid.Type: GrantFiled: October 11, 1985Date of Patent: December 15, 1987Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Masayuki Omatsu, Naoki Yonese, Mitsuru Kondo
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Patent number: 4706126Abstract: A high speed, high performance facsimile apparatus having an image data storing function is disclosed. In the apparatus, coders, decoder and other structural elements are connected to a system bus. Delivery of instructions from a processing unit to the various structural elements in the system, return of responses from the structural elements to the processing unit, and exchange of image data between the structural elements are effected over the system bus, so that a single processing unit executes both the control and the input and output of image data.Type: GrantFiled: October 22, 1985Date of Patent: November 10, 1987Assignee: Ricoh Company. Ltd.Inventor: Mitsuru Kondo
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Patent number: 4704379Abstract: A pressure sensitive manifold sheet characterized in that a chelate record material comprising an iron (III) compound and/or a vanadium compound, and an aromatic compound having at least one of hydroxyl group and mercapto group on the aromatic ring in combination therewith is used further in combination with an infrared absorbing organic compound.Type: GrantFiled: March 3, 1986Date of Patent: November 3, 1987Assignee: Kanzaki Paper Manufacturing Co. Ltd.Inventors: Shunsuke Shioi, Kazuyuki Shinmitsu, Nobuo Kanda, Mitsuru Kondo, Makoto Miyake
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Patent number: 4661857Abstract: A control method for controlling a facsimile communication between a transmitter and a receiver is provided. During protocol procedure, information including decoding speed and capacity of a buffer memory is supplied from the receiver to the transmitter. Then, during data transmission, the transmitter controls the encoding speed to be equal to or smaller than the decoding speed at the receiver by inserting an appropriate number of fillbits, and the encoding operation is interrupted, resumed or a predetermined number of fillbits are inserted depending upon the number of bits stored in the buffer memory of the receiver.Type: GrantFiled: August 10, 1983Date of Patent: April 28, 1987Assignee: Ricoh Company, Ltd.Inventor: Mitsuru Kondo
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Patent number: 4658276Abstract: A new phthalide derivative useful as a colorless chromogenic material has the following formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 have the same meaning as defined hereinbefore.Type: GrantFiled: June 11, 1986Date of Patent: April 14, 1987Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Nobuo Kanda, Tetsuro Horiike, Mitsuru Kondo
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Patent number: 4641160Abstract: A new phthalide derivative useful as a colorless chromogenic material has the general formula: ##STR1## wherein R.sub.1 to R.sub.10, X.sub.1, X.sub.2, Y.sub.1, Y.sub.2, Z, a and b have the same meaning as defined hereinbefore.Type: GrantFiled: November 2, 1984Date of Patent: February 3, 1987Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Mitsuru Kondo, Tomoyuki Okimoto, Nobuo Kanda
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Patent number: 4633277Abstract: This invention provides a heat-sensitive recording material comprising a base sheet and a heat-sensitive record layer formed over the base sheet and comprising a colorless or pale-colored basic dye and a color developing material capable of forming a color when contacted with the dye, the recording material being characterized in that the heat-sensitive record layer comprises as the color developing material at least one compound represented by the formula ##STR1## wherein X is straight- or branched-chain alkylene group having 1 to 4 carbon atoms, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are each hydrogen atom, halogen atom, alkyl group having 1 to 4 carbon atoms, alkoxy group having 1 to 4 carbon atoms, phenyl group or benzyl group, or R.sub.1 and R.sub.2 R.sub.2 and R.sub.3, and R.sub.4 and R.sub.5, when taken together, may form an aromatic ring, and when R.sub.4 and R.sub.5 taken together form an aromatic ring, the hydroxy group on the benzene ring to which R.sub.4 and R.sub.Type: GrantFiled: June 24, 1985Date of Patent: December 30, 1986Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Toshitake Suzuki, Fumio Hama, Mitsuru Kondo
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Patent number: 4629800Abstract: Fluoran compounds of the structural formula: ##STR1## wherein R.sub.1 is propyl or butyl, R.sub.2 is an alkyl of from one to four carbon atoms, R.sub.3 is methyl or ethyl, and R.sub.4 is hydrogen or methyl are particularly suitable for use in providing high quality pressure, heat or electrothermal sensitive recording sheets containing a color former in operative association with an electron-accepting substance.Type: GrantFiled: March 1, 1985Date of Patent: December 16, 1986Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Naoki Yonese, Masayuki Omatsu, Mitsuru Kondo
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Patent number: 4620233Abstract: A scanning array (12) comprising a plurality of photosensor elements (12a) is reciprocated perpendicular to the axis (12b) thereof to scan a rectangular area of an original document (69). After scanning the area, the document (69) is moved parallel to the axis (12b) of the scanning array (12) and the scanning array (12) reciprocated again to scan a next rectangular area. This process is continued until the entire document (69) is scanned. The photosensor elements (12a) produce data signals corresponding to incident light from the document (69) which are fed serially into an orthogonal conversion memory (26) in the column direction. The data signals are read out of the memory (26) in the row direction and run length encoded for transmission. Received data signals are run length decoded and fed into the memory (26) in the row direction and read out of the memory (26) in the column direction.Type: GrantFiled: December 29, 1982Date of Patent: October 28, 1986Assignee: Ricoh Company, Ltd.Inventors: Mutsuo Ogawa, Takemi Hashimoto, Kazuyuki Hara, Mitsuru Kondo
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Patent number: 4612557Abstract: A hydroxydiphenyl sulfone derivative represented by the formula (I) is a novel compound and a heat-sensitive recording material which comprises at least one of the derivatives as a color acceptor not only has an excellent recording sensitivity, resistances to plasticizer and diazo developer but also suits to high-speed recording, has an excellent storage stability of record images and does not decrease in whiteness of the background, ##STR1## wherein R.sup.1 and R.sup.2 are each hydrogen, halogen, lower alkyl, lower alkoxyl or hydroxyl and n is an integer of 3 or 4.Type: GrantFiled: November 22, 1985Date of Patent: September 16, 1986Assignee: Kanzaki Paper Manufacturing Co. Ltd.Inventors: Fumio Hama, Toshitake Suzuki, Mitsuru Kondo