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).

  • Patent number: 4770973
    Abstract: 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: Grant
    Filed: November 7, 1986
    Date of Patent: September 13, 1988
    Assignee: Kanzaki Paper Manufacturing Limited
    Inventors: Nobuo Kanda, Katsuhiko Ishida, Tosaku Okamoto, Mitsuru Kondo
  • Patent number: 4761396
    Abstract: 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: Grant
    Filed: February 5, 1987
    Date of Patent: August 2, 1988
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Nobuo Kanda, Kazuko Hirahara, Mitsuru Kondo
  • Patent number: 4748148
    Abstract: 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: Grant
    Filed: November 13, 1986
    Date of Patent: May 31, 1988
    Inventors: Mitsuru Kondo, Tomoyuki Okimoto, Nobuo Kanda
  • Patent number: 4746645
    Abstract: 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: Grant
    Filed: December 16, 1986
    Date of Patent: May 24, 1988
    Assignees: Kanzaki Paper Manufacturing Company, Limited, Sugai Chemical Industry Co., Ltd.
    Inventors: Teijiro Kitao, Mitsuru Kondo, Toshitake Suzuki, Masayuki Omatsu, Hironori Fujii, Kenji Minami
  • Patent number: 4731353
    Abstract: 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: Grant
    Filed: February 12, 1987
    Date of Patent: March 15, 1988
    Assignee: Kanzaki Paper Manufacturing Company, Limited
    Inventors: Fumio Hama, Nobuo Kanda, Mitsuru Kondo
  • Patent number: 4729984
    Abstract: 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: Grant
    Filed: August 4, 1986
    Date of Patent: March 8, 1988
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Fumio Hama, Masayuki Omatsu, Mitsuru Kondo
  • Patent number: 4730057
    Abstract: 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: Grant
    Filed: January 10, 1986
    Date of Patent: March 8, 1988
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Nobuo Kanda, Naoki Yonese, Mitsuru Kondo
  • Patent number: 4713488
    Abstract: 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: Grant
    Filed: October 11, 1985
    Date of Patent: December 15, 1987
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Masayuki Omatsu, Naoki Yonese, Mitsuru Kondo
  • Patent number: 4706126
    Abstract: 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: Grant
    Filed: October 22, 1985
    Date of Patent: November 10, 1987
    Assignee: Ricoh Company. Ltd.
    Inventor: Mitsuru Kondo
  • Patent number: 4704379
    Abstract: 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: Grant
    Filed: March 3, 1986
    Date of Patent: November 3, 1987
    Assignee: Kanzaki Paper Manufacturing Co. Ltd.
    Inventors: Shunsuke Shioi, Kazuyuki Shinmitsu, Nobuo Kanda, Mitsuru Kondo, Makoto Miyake
  • Patent number: 4661857
    Abstract: 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: Grant
    Filed: August 10, 1983
    Date of Patent: April 28, 1987
    Assignee: Ricoh Company, Ltd.
    Inventor: Mitsuru Kondo
  • Patent number: 4658276
    Abstract: 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: Grant
    Filed: June 11, 1986
    Date of Patent: April 14, 1987
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Nobuo Kanda, Tetsuro Horiike, Mitsuru Kondo
  • Patent number: 4641160
    Abstract: 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: Grant
    Filed: November 2, 1984
    Date of Patent: February 3, 1987
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Mitsuru Kondo, Tomoyuki Okimoto, Nobuo Kanda
  • Patent number: 4633277
    Abstract: 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: Grant
    Filed: June 24, 1985
    Date of Patent: December 30, 1986
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Toshitake Suzuki, Fumio Hama, Mitsuru Kondo
  • Patent number: 4629800
    Abstract: 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: Grant
    Filed: March 1, 1985
    Date of Patent: December 16, 1986
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Naoki Yonese, Masayuki Omatsu, Mitsuru Kondo
  • Patent number: 4620233
    Abstract: 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: Grant
    Filed: December 29, 1982
    Date of Patent: October 28, 1986
    Assignee: Ricoh Company, Ltd.
    Inventors: Mutsuo Ogawa, Takemi Hashimoto, Kazuyuki Hara, Mitsuru Kondo
  • Patent number: 4612557
    Abstract: 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: Grant
    Filed: November 22, 1985
    Date of Patent: September 16, 1986
    Assignee: Kanzaki Paper Manufacturing Co. Ltd.
    Inventors: Fumio Hama, Toshitake Suzuki, Mitsuru Kondo
  • Patent number: 4586088
    Abstract: A transmission control system for a facsimile transceiver allows two facsimile transceivers having different buffer memory sizes and decoding rates different from encoding rates to intercommunicate within a short period of time. Start and stop of encoding and insertion of fill bits are controlled on the basis of an amount of data stored in a buffer memory of a transmitting transceiver, which temporarily stores encoded data, and various conditions associated with a receiving transceiver, so that the number of bits encoded data per line is averaged over a plurality of lines. This decreases the transmission time and, thereby, increases the transmission rate without resorting to an increase in the processing rate of a reader or that of a recorder or an increase in modem rate.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: April 29, 1986
    Assignee: Ricoh Company, Ltd.
    Inventor: Mitsuru Kondo
  • Patent number: 4580153
    Abstract: A record material utilizing the color forming reaction between a substantially colorless chromogenic material and an electron accepting reactant material is disclosed. The colorless chromogenic material used comprises a mixture of the first component consisting of at least one specified phthalide compound having two vinyl linkages and the second component of another kind of chromogenic material which is different from said first component. The first component of the chromogenic material is used in an amount of 5 to 80%, preferably 7 to 50%, by weight with respect to the amount of the second component and in such an amount that the reflectance at any wavelength within the range of 580 nm to 880 nm, preferably within the range of 500 to 880 nm of color images developed by said color forming reaction is less by at least 55% than that of said record material before color developing.
    Type: Grant
    Filed: July 24, 1984
    Date of Patent: April 1, 1986
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Mitsuru Kondo, Nobuo Kanda, Akio Noguchi, Yukio Takayama
  • Patent number: 4571633
    Abstract: A facsimile communication machine capable of transmitting and receiving coded picture data is provided. The machine comprises a system control unit including a pair of CPUs, one of which is capable of controlling the reading operation while the machine is in transmission mode and the recording operation while the machine is in receiving mode and the other of which is capable of controlling the coding operation while the machine is in transmission mode and the decoding operation while the machine is in receiving mode. With the use of such a pair of CPUs, parallel processing of reading and coding operations and of decoding and recording operations can be carried out, thereby allowing to significantly increase operational speed.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: February 18, 1986
    Assignee: Ricoh Company, Ltd.
    Inventor: Mitsuru Kondo