Patents by Inventor Katsuyuki Watanabe

Katsuyuki Watanabe 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).

  • Publication number: 20040033454
    Abstract: The present invention provides a photothermographic material, comprising a photosensitive silver halide, a non-photosensitive organic solvent salt, a reducing agent for a silver ion, and a binder on one face of a support, for being applied by using an organic solvent, the photothermographic material further comprising at least one compound selected from the group of compounds consisting of: a compound represented by the following general formula (1), a compound having a &bgr;-lactam ring, a compound having a group that is adsorptive to a silver halide and a group that reduces a silver halide and a precursor thereof: 1
    Type: Application
    Filed: August 4, 2003
    Publication date: February 19, 2004
    Inventors: Tomoyuki Ohzeki, Hiroyuki Mifune, Tadashi Inaba, Kohzaburoh Yamada, Katsuyuki Watanabe
  • Publication number: 20030235792
    Abstract: Disclosed are a silver halide photographic light-sensitive material comprising silver halide containing a metal complex having a cyanide ligand in a silver halide emulsion layer and comprising a hydrazine compound having an onium group in the molecule, and a method of developing the silver halide photographic light-sensitive material with a developer having a pH of 9.0-11.0. The silver halide photographic light-sensitive material of the present invention can provide high sensitivity, high processing stability and high contrast images.
    Type: Application
    Filed: March 21, 2003
    Publication date: December 25, 2003
    Inventors: Tokuju Oikawa, Tadashi Ito, Katsuyuki Watanabe, Mitsunori Hirano, Yasutomo Kawanishi
  • Publication number: 20030232288
    Abstract: Disclosed are photothermographic materials having, on a support, a layer that contains at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, in which the mean silver iodide content of the photosensitive silver halide falls between 5 and 100 mol %, preferably between 40 and 100 mol %.
    Type: Application
    Filed: November 1, 2002
    Publication date: December 18, 2003
    Inventors: Yutaka Oka, Tomoyuki Ohzeki, Katsutoshi Yamane, Seiichi Yamamoto, Sumito Yamada, Hiroyuki Mifune, Tadashi Inaba, Kohzaburoh Yamada, Katsuyuki Watanabe
  • Patent number: 6587638
    Abstract: A recording/reproducing apparatus is provided for effecting digital processing to convert an analog video signal into a digital signal without losing character data superimposed over a vertical blanking period of the analog video signal. The recording/reproducing apparatus for converting the analog video signal into the digital signal and recording/reproducing the converted digital signal has a detector which detects character data, which is superimposed over the vertical blanking period of the received analog video signal, at the recording time. A superimposer which encodes the detected character data and superimposes the encoded character data over a digital signal from which the character data was removed, whereby the digital signal with the superimposed character data is recorded on the recording media.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: July 1, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Katsuyuki Watanabe, Hideo Nishijima, Hiroo Okamoto, Motoyoshi Sasaki
  • Patent number: 6566042
    Abstract: A method for producing an image comprising a step for heat-developing after light exposure a photothermographic material containing elsewhere on a support a non-photosensitive organic acid silver salt, a photosensitive silver halide, a nucleation aid, a binder and at least one compound expressed by the formula (A) below, at a line speed of 140 cm/min or faster: [where R1, R2, R3, X1 and X2 independently represent a hydrogen atom, halogen atom or the like; at least either one of X1 and X2 is a group expressed as —NR4R5, where R4 and R5 independently represents a hydrogen atom, alkyl group or the like] is provided. The method for producing an image of the present invention is successful in raising Dmax (maximum density), suppressing increase in fog during a long-term storage, and suppressing dimensional instability of line width affected by the energy of exposure.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: May 20, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takahiro Goto, Minoru Sakai, Katsuyuki Watanabe
  • Patent number: 6482582
    Abstract: Disclosed in an image recording material comprising, on a support, a photosensitive silver halide, a reducing agent, a binder and a compound represented by the following Formula (1): wherein, in Formula (1), R1 and R2 each independently represent a substituent, R1 and R2 may be bonded to each other to form a ring, X represents a halogen atom, L represents a methylene group, m represents an integer of 0-7, Y represents a divalent bridging group, n represents 0 or 1 and Z represents a residue derived from a photographically useful compound. This image recording material exhibits high sensitivity, low fog and good storage stability, and is stable against fluctuation of development conditions.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: November 19, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuyuki Watanabe, Masaru Takasaki
  • Publication number: 20020164552
    Abstract: Disclosed is a thermally processed image recording material containing, on one side of a support having an image-forming layer, a silver salt of an organic acid, a reducing agent and at least one kind of a compound represented by the following formula (1): 1
    Type: Application
    Filed: February 22, 2002
    Publication date: November 7, 2002
    Inventors: Katsuyuki Watanabe, Masaru Takasaki, Toshihide Ezoe, Kohzaburoh Yamada, Yasuhiro Kawanishi, Masahiko Taniguchi
  • Patent number: 6424787
    Abstract: A magnetic recording/reproducing apparatus equipped with an image sensor, has a camera portion having an A/D converter for converting a signal from an image sensor into a digital signal and a first digital processor for receiving an output of the A/D converter and for digitally processing thereof. A VTR portion of a helical scan type mounts at least two or more of magnetic heads for recording/reproducing a FM modulated luminance signal and a low band converted chrominance signal. A second digital processor processes a video signal of the VTR. A switching circuit is provided in a preceding stage of the A/D converter. The image sensor signal, an external video signal and a reproduced signal from the magnetic heads are exchanged. The output of the A/D converter is inputed to the second digital processor, and a sampling clock of the A/D converter is exchanged to the most appropriate clock for the respective image sensor signal, the external video signal and the reproduced signal from the magnetic heads.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: July 23, 2002
    Assignees: Hitachi, Ltd., Hitachi Video and Information System, Inc.
    Inventors: Katsuyuki Watanabe, Hideo Nishijima, Koichi Ono, Akihito Nishizawa, Kazuaki Hori
  • Patent number: 6383731
    Abstract: The object of the present invention is to provides a novel polyhalogenomethylsulfonyl compound which can be used for providing a thermally processed image recording material which has a high sensitivity, gives less fog, and has a good stock stability and a good image storage stability of dark and high temperature or light storage. According to the present invention, there is provided a polyhalogenomethylsulfonyl compound represented by the following formula (1), or salts thereof, or hydrates or solvates thereof: wherein Z1 and Z2 each independently represents a halogen atom; A represents a hydrogen atom or a halogen atom; and R1 represents an alkyl group having from 2 to 12 carbon atoms, which may have one or more substituents, an alkenyl group having from 2 to 12 carbon atoms, which may have one or more substituents, or an alkinyl group having from 2 to 12 carbon atoms, which may have one or more substituents.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: May 7, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masaru Takasaki, Katsuyuki Watanabe, Hisashi Okamura
  • Publication number: 20020048734
    Abstract: The object of the invention is to provide a photothermographic material high in sensitivity and image quality, and excellent in storability in the undeveloped state, which is used for medical images or photomechanical processes.
    Type: Application
    Filed: August 14, 2001
    Publication date: April 25, 2002
    Inventors: Kouta Fukui, Masaru Takasaki, Katsuyuki Watanabe
  • Publication number: 20020048716
    Abstract: Disclosed in an image recording material comprising, on a support, a photosensitive silver halide, a reducing agent, a binder and a compound represented by the following Formula (1): 1
    Type: Application
    Filed: July 24, 2001
    Publication date: April 25, 2002
    Inventors: Katsuyuki Watanabe, Masaru Takasaki
  • Patent number: 6376166
    Abstract: A heat-developable photosensitive material which comprises, on the same side of a support, at least (a) a photosensitive silver halide, (b) a reducible silver salt, (c) a phenol compound represented by the following general formula (1), (d) a binder, and (e) a coupler compound: wherein V1 to V8 each independently represent a hydrogen atom or a functional group; L represents a bridging group consisting of —CH(V9)— or —S—; V9 represents a hydrogen atom or a functional group. The heat-developable photosensitive material causes extremely low fog and is suitable for photomechanical reproduction.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: April 23, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toyohisa Oya, Katsuyuki Watanabe, Masaru Takasaki, Minoru Sakai
  • Patent number: 6368782
    Abstract: A photothermographic material comprising, on one side of a support, at least one kind of photosensitive silver halide, a light insensitive silver salt of an organic acid, a reducing agent for silver ions and a binder, wherein the photosensitive silver halide has a mean grain size of 0.001 &mgr;m to 0.06 &mgr;m and the material comprises at least two kinds of organic polyhalogenated compounds at least one of which is an organic polyhalogenated compound represented by the following formula (1): wherein Z1 and Z2 independently represent a halogen atom, X1 represents a hydrogen atom or an electron withdrawing group, Y1 represents —CO— group or —SO2— group, Q represents an arylene group or a divalent heterocyclic group, L represents a bridging group, W1 and W2 independently represent a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group, and n represents 0 or 1.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: April 9, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kouta Fukui, Masaru Takasaki, Katsuyuki Watanabe
  • Patent number: 6358677
    Abstract: A heat-developable recording material having, at least on one side and the same side of the support, (a) reducible silver salt, (b) a reducing agent other than a compound represented by the general formula (1) below, (c) a binder, and (d) at least one compound represented by the general formula (1) below; content of the compound represented by the general formula (1) being 0.01 to 100 mol % with respect to the reducing agent: [where in the general formula (1), R1, R2, R3, X1 and X2 independently represent a hydrogen atom; halogen atom; or substituent which is bound to the benzene ring via a carbon atom, oxygen atom, nitrogen atom, sulfur atom or phosphorus atom. At least either X1 or X2 represents a group represented as —NR4R5, where R4 and R5 independently represent a group selected from a hydrogen atom, alkyl group and the like.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: March 19, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masahiko Taniguchi, Katsuyuki Watanabe, Shigeo Hirano, Minoru Sakai
  • Patent number: 6350569
    Abstract: A heat-developable photographic material which contains a particular class of polyhalogenated organic compound having a water-soluble group in one or more layers on the side of the image-forming layer. The heat-developable photographic material can be obtained at a low cost and has much reduced fog and excellent storage stability.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: February 26, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuyuki Watanabe, Hiroyuki Suzuki, Masaru Takasaki, Shigeo Hirano
  • Publication number: 20020018955
    Abstract: ? The object of the present invention is to provides a novel polyhalogenomethylsulfonyl compound which can be used for providing a thermally processed image recording material which has a high sensitivity, gives less fog, and has a good stock stability and a good image storage stability of dark and high temperature or light storage.
    Type: Application
    Filed: August 20, 2001
    Publication date: February 14, 2002
    Applicant: Fuji Photo Film Co., Ltd.
    Inventors: Masaru Takasaki, Katsuyuki Watanabe, Hisashi Okamura
  • Patent number: 6329127
    Abstract: An object of the present invention is to provide a heat-developable photosensitive material of less heat development temperature and humidity dependency, which is unlikely to be affected by uneven temperature distribution in heat development apparatuses and humidity condition, and can stably form uniform images, in particular, a heat-developable photosensitive material of improved stability of coating solutions overtime, which can form uniform ultrahigh contrast images without unevenness, which are suitable for mechanical processes, and exhibit suppressed fluctuation of photographic performance depending on the storage condition.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: December 11, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadashi Ito, Katsuyuki Watanabe, Kazunobu Katoh, Minoru Sakai
  • Patent number: 6329134
    Abstract: A heat-developable photosensitive material which comprises, on at least one of the surfaces of a support, (a) a photosensitive silver halide, (b) a reducible silver salt, (c) a reducing agent, (d) an ultrahigh contrast agent, (e) a binder, and (f) at least one compound represented by the following formula (1) on a single surface: wherein, X represents a halogen atom; R1 represents a substituted aryl group or a heterocyclic group; R2 represents a functional group; r is an integer of from 0 to 4; and when r≧2, plural groups represented by R2 may be the same or different and they may bind to each other to form a 5- to 7-membered non-aromatic or aromatic carbon ring.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: December 11, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuyuki Watanabe, Minoru Sakai, Toyohisa Oya
  • Publication number: 20010041043
    Abstract: A helical scanning video tape recorder for recording and reproducing video signals and audio signals to/from a magnetic tape. The video tape recorder includes an analog signal reproducing mode in which an FM luminance signal and a down-converted chrominance signal are reproduced from the magnetic tape by a pair of magnetic heads having a first azimuth angle and an FM audio signal is reproduced from a deep layer of the magnetic tape by a pair of magnetic heads having a second azimuth angle, and a digital signal reproducing mode in which a digital signal is reproduced from the magnetic tape by the pair of magnetic heads having the second azimuth angle. The digital signal is converted into a signal having a frequency in a frequency band higher than a frequency of the FM audio is signal. The video type recorder also includes a recording mode detector and a controller.
    Type: Application
    Filed: June 12, 2001
    Publication date: November 15, 2001
    Inventors: Hiroya Abe, Hideo Nishijima, Hiroyuki Torii, Kouji Kaniwa, Katsuyuki Watanabe, Toshio Nakamoto
  • Patent number: 6316670
    Abstract: The object of the present invention is to provides a novel polyhalogenomethylsulfonyl compound which can be used for providing a thermally processed image recording material which has a high sensitivity, gives less fog, and has a good stock stability and a good image storage stability of dark and high temperature or light storage. According to the present invention, there is provided a polyhalogenomethylsulfonyl compound represented by the following formula (1), or salts thereof, or hydrates or solvates thereof: wherein Z1 and Z2 each independently represents a halogen atom; A represents a hydrogen atom or a halogen atom; and R1 represents an alkyl group having from 2 to 12 carbon atoms, which may have one or more substituents, an alkenyl group having from 2 to 12 carbon atoms, which may have one or more substituents, or an alkinyl group having from 2 to 12 carbon atoms, which may have one or more substituents.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: November 13, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masaru Takasaki, Katsuyuki Watanabe, Hisashi Okamura