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Takao Kumasaka
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Hitachi, JP
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last 30 patents
Information
Patent Grant
Image recording device and an image recording system
Patent number
7,003,241
Issue date
Feb 21, 2006
Ricoh Printing Systems, Ltd.
Shinya Kobayashi
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Multi-color image forming apparatus having arrangements for reducin...
Patent number
5,893,664
Issue date
Apr 13, 1999
Hitcahi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing apparatus and picture image forming apparatus
Patent number
5,860,049
Issue date
Jan 12, 1999
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing apparatus and color electrophotographic apparatus using...
Patent number
5,832,350
Issue date
Nov 3, 1998
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image formation method and image formation apparatus
Patent number
5,745,818
Issue date
Apr 28, 1998
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing apparatus for an electrophotographic machine
Patent number
5,574,546
Issue date
Nov 12, 1996
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Magnetic brush with bristle height equal to developing gap
Patent number
5,430,528
Issue date
Jul 4, 1995
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method of multi-color recording using electro-photography process a...
Patent number
5,365,325
Issue date
Nov 15, 1994
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image recording method including determining a gap between a photos...
Patent number
5,315,353
Issue date
May 24, 1994
Hitachi, Ltd.
Yuzuru Simazaki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic recording apparatus having a plurality of devel...
Patent number
5,307,147
Issue date
Apr 26, 1994
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Corona deterioration and moisture compensation for transfer unit in...
Patent number
5,291,253
Issue date
Mar 1, 1994
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Radiant heat fixing apparatus
Patent number
5,081,502
Issue date
Jan 14, 1992
Hitachi, Ltd.
Teruaki Mitsuya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Multi-color electrophotograph apparatus
Patent number
5,008,691
Issue date
Apr 16, 1991
Hitachi, Ltd.
Takao Kumasaka
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Electrophotographic image transfer member, electrophotographic imag...
Patent number
4,998,143
Issue date
Mar 5, 1991
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrical power supply, fusing apparatus and recording apparatus u...
Patent number
4,992,923
Issue date
Feb 12, 1991
Hitachi, Ltd.
Teruaki Mitsuya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Duplex reproducing apparatus with device for cooling and conveying...
Patent number
4,959,693
Issue date
Sep 25, 1990
Hitachi, Ltd.
Teruaki Mitsuya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic recording apparatus
Patent number
4,952,951
Issue date
Aug 28, 1990
Hitachi, Ltd.
Takao Kumasaka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Developing device and multi-color recording apparatus
Patent number
4,947,200
Issue date
Aug 7, 1990
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic recording method and apparatus with non-contact...
Patent number
4,862,828
Issue date
Sep 5, 1989
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Flash fusing apparatus for reducing occurrence of spots on recordin...
Patent number
4,821,052
Issue date
Apr 11, 1989
Hitachi, Ltd.
Teruaki Mitsuya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Recording apparatus having a flash fusing apparatus
Patent number
4,782,362
Issue date
Nov 1, 1988
Hitachi, Ltd.
Teruaki Mitsuya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY