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Katsuya Kawagoe
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Kamakura, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Belt device, belt regulator, roller unit, and image forming apparatus
Patent number
11,112,734
Issue date
Sep 7, 2021
Ricoh Company, Ltd.
Naohiro Kumagai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Belt control device and image forming apparatus incorporating same
Patent number
10,955,771
Issue date
Mar 23, 2021
Ricoh Company, Ltd.
Naohiro Kumagai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
To-be-transferred object length measurement device and image formin...
Patent number
8,639,174
Issue date
Jan 28, 2014
Ricoh Company, Ltd.
Masahiro Ashikawa
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Image forming apparatus with transfer nip adjustment function
Patent number
8,548,345
Issue date
Oct 1, 2013
Ricoh Company, Ltd.
Ryuichi Minbe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus with transfer nip adjustment function
Patent number
8,433,221
Issue date
Apr 30, 2013
Ricoh Company, Ltd.
Ryuichi Minbe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning device and image forming apparatus
Patent number
7,764,918
Issue date
Jul 27, 2010
Ricoh Company, Ltd.
Katsuya Kawagoe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Optical encoder, motor driver and image forming apparatus
Patent number
7,532,370
Issue date
May 12, 2009
Ricoh Company, Ltd.
Koichi Kudo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mark detector, drive controller, belt drive unit, and image forming...
Patent number
7,379,683
Issue date
May 27, 2008
Ricoh Company, Ltd.
Takuro Kamiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer device for forming a stable transfer electric field, and a...
Patent number
7,346,287
Issue date
Mar 18, 2008
Ricoh Company, Ltd.
Hiromi Ogiyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Apparatus for suppressing deformations in a belt of an image formin...
Patent number
7,286,779
Issue date
Oct 23, 2007
Ricoh Company, Ltd.
Katsuya Kawagoe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for transferring multiple toner images and ima...
Patent number
7,233,761
Issue date
Jun 19, 2007
Ricoh Company, Ltd.
Katsuya Kawagoe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus including rotary member speed detection mec...
Patent number
6,947,693
Issue date
Sep 20, 2005
Ricoh Company, Ltd.
Takuroh Kamiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus including an intermediate image transfer be...
Patent number
6,901,234
Issue date
May 31, 2005
Ricoh Company, Ltd.
Hiromi Ogiyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer bias applying method for an image forming apparatus and de...
Patent number
6,829,450
Issue date
Dec 7, 2004
Ricoh Company, Ltd.
Takahiro Tamiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus including image transfer body with elastic...
Patent number
6,785,500
Issue date
Aug 31, 2004
Ricoh Company, Ltd.
Mitsuru Takahashi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus, and process cartridge for use in image for...
Patent number
6,741,821
Issue date
May 25, 2004
Ricoh Company, Ltd.
Akihiro Sugino
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for forming an image with no degradation
Patent number
6,697,595
Issue date
Feb 24, 2004
Ricoh Company, Ltd.
Katsuya Kawagoe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer bias applying method for an image forming apparatus and de...
Patent number
6,618,565
Issue date
Sep 9, 2003
Ricoh Company, Ltd.
Takahiro Tamiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image transferring method and image forming apparatus for transferr...
Patent number
6,212,351
Issue date
Apr 3, 2001
Ricoh Company, Ltd.
Katsuya Kawagoe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrostatic image forming apparatus capable of reducing defective...
Patent number
6,163,661
Issue date
Dec 19, 2000
Ricoh Company, Ltd.
Shinichi Namekata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus which removes a surface potential of an int...
Patent number
5,983,060
Issue date
Nov 9, 1999
Ricoh Company, Ltd.
Shin-Ichi Namekata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrostatic image forming apparatus
Patent number
5,890,030
Issue date
Mar 30, 1999
Ricoh Company, Ltd.
Shinichi Namekata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image recording apparatus
Patent number
5,442,428
Issue date
Aug 15, 1995
Ricoh Company, Ltd.
Mitsuru Takahashi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
BELT DEVICE, BELT REGULATOR, ROLLER UNIT, AND IMAGE FORMING APPARATUS
Publication number
20200301322
Publication date
Sep 24, 2020
Ricoh Company, Ltd.
Naohiro KUMAGAI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
BELT CONTROL DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
Publication number
20200301321
Publication date
Sep 24, 2020
Ricoh Company, Ltd.
Naohiro KUMAGAI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS WITH TRANSFER NIP ADJUSTMENT FUNCTION
Publication number
20130223901
Publication date
Aug 29, 2013
Ryuichi MINBE
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
To-be-transferred object length measurement device and image formin...
Publication number
20100239282
Publication date
Sep 23, 2010
Masahiro Ashikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS WITH TRANSFER NIP ADJUSTMENT FUNCTION
Publication number
20100142985
Publication date
Jun 10, 2010
Ryuichi MINBE
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CLEANING DEVICE AND IMAGE FORMING APPARATUS
Publication number
20070286654
Publication date
Dec 13, 2007
Katsuya Kawagoe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Method and apparatus for transferring multiple toner images and ima...
Publication number
20070014595
Publication date
Jan 18, 2007
Katsuya Kawagoe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Transfer device for forming a stable transfer electric field, and a...
Publication number
20060127116
Publication date
Jun 15, 2006
Hiromi Ogiyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Mark detector, drive controller, belt drive unit, and image forming...
Publication number
20060116228
Publication date
Jun 1, 2006
Takuro Kamiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus including rotary member speed detection mec...
Publication number
20040228663
Publication date
Nov 18, 2004
Takuroh Kamiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Optical encoder, motor driver and image forming apparatus
Publication number
20040160646
Publication date
Aug 19, 2004
Koichi Kudo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Image forming apparatus
Publication number
20040114951
Publication date
Jun 17, 2004
Katsuya Kawagoe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Bias applying method for an image forming apparatus and device for...
Publication number
20040105692
Publication date
Jun 3, 2004
Takahiro Tamiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus including an intermediate image transfer belt
Publication number
20030219287
Publication date
Nov 27, 2003
Hiromi Ogiyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Transfer device for forming a stable transfer electric field, and a...
Publication number
20030118359
Publication date
Jun 26, 2003
Hiromi Ogiyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus, and process cartridge for use in image for...
Publication number
20030035660
Publication date
Feb 20, 2003
Akihiro Sugino
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Bias applying method for an image forming apparatus and device for...
Publication number
20030026625
Publication date
Feb 6, 2003
Takahiro Tamiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus
Publication number
20030016968
Publication date
Jan 23, 2003
Mitsuru Takahashi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Method and apparatus for forming an image with no degradation
Publication number
20020034406
Publication date
Mar 21, 2002
Ricoh Company, Ltd.
Katsuya Kawagoe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY