Inventor
YANAGAWA NOBUYUKI
JP65 patents
⚠️ This page may combine multiple inventors who share the name “YANAGAWA NOBUYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
49 patentsUS6402317B2Jun 11, 2002
Ink-jet recording of images with improved clarity of images
RICOH KK136 citations99
US6674982B2Jan 6, 2004
Image forming apparatus including components mounted and/or dismounted in selected order
RICOH KK81 citations98
US6439713B1Aug 27, 2002
Powder composition and process of forming liquid ink image using same
RICOH KK97 citations98
US6623816B1Sep 23, 2003
Recording method and apparatus with an intermediate transfer medium based on transfer-type recording mechanism
RICOH KK43 citations96
US6257716B1Jul 10, 2001
Ink-jet recording of images with improved clarity of images
RICOH KK79 citations96
US6215974B1Apr 10, 2001
Image forming apparatus with a toner mounter having a vibration apparatus
RICOH KK69 citations96
US6157797ADec 5, 2000
Image forming apparatus with integrated rotatable image carrier and writing device and method of assembling the same
RICOH KK54 citations96
US7082274B2Jul 25, 2006
Image forming apparatus with components removable in preselected direction and order
RICOH KK20 citations93
US6832061B2Dec 14, 2004
Image forming apparatus with selectively lockable intermediate members for supporting developing and forming devices of same
RICOH KK29 citations93
US6396528B1May 28, 2002
Image forming system, intermediate transfer medium and method with temporary attachment features
RICOH KK51 citations93
US6332066B1Dec 18, 2001
Multicolor image forming method and apparatus using an intermediate transfer belt and apparatus having plural developing units for the same
RICOH KK27 citations93
US4406535ASep 27, 1983
Development apparatus
RICOH KK40 citations93
US4403851ASep 13, 1983
Electrostatic copying machine comprising improved arrangement of operating units
RICOH KK35 citations93
US4364656ADec 21, 1982
Electrophotographic copying machine
RICOH KK34 citations93
US4204668AMay 27, 1980
Paper feeding apparatus
RICOH KK46 citations93
US7070269B2Jul 4, 2006
Recording method and apparatus with an intermediate transfer medium based on transfer-type recording mechanism
RICOH KK35 citations92
US6837578B2Jan 4, 2005
Recording method and apparatus with an intermediate transfer medium based on transfer-type recording mechanism
RICOH KK26 citations92
US6292641B1Sep 18, 2001
Image forming apparatus selectively operating one of a plurality of developing units and a method for controlling a switching operation for the developing units
RICOH KK46 citations92
US6222566B1Apr 24, 2001
Image formation apparatus and method thereof
RICOH KK38 citations92
US4615607AOct 7, 1986
Dual-color copier
RICOH KK27 citations92
US4359670ANov 16, 1982
Lamp intensity control apparatus comprising preset means
RICOH KK50 citations92
US4161644AJul 17, 1979
Electrophotographic apparatus comprising improved thermal fixing means
RICOH KK33 citations92
US6256461B1Jul 3, 2001
Image forming apparatus with an intermediate transfer body including reference markers for controlling the same
RICOH KK46 citations91
US4451139AMay 29, 1984
Cleaning apparatus for photoconductive element
RICOH KK37 citations91
US4402103ASep 6, 1983
Cleaning unit for copying machine
RICOH KK28 citations89
US6920291B2Jul 19, 2005
Belt apparatus used in image formation, and an image formation apparatus
RICOH KK12 citations84
US6842598B2Jan 11, 2005
Image forming apparatus having a plurality of developing means around an image carrier
RICOH KK12 citations84
US6263178B1Jul 17, 2001
Method of applying a bias voltage for image development and method of switching the bias voltage in an image forming apparatus
RICOH KK19 citations84
US4449810AMay 22, 1984
Electrophotographic copying machine with means for mixing and removing toner and an integral exposure plate
RICOH KK22 citations82
US4372547AFeb 8, 1983
Sheet feed apparatus
RICOH KK21 citations82
US4183652AJan 15, 1980
Photoconductor sheet clamp apparatus
RICOH KK21 citations82
US4155545AMay 22, 1979
Sheet feed apparatus for electrostatic copying machine or the like
RICOH KK21 citations82
US4074217AFeb 14, 1978
Cleaning unit for an optical system in a copying machine
RICOH KK24 citations82
US6919911B2Jul 19, 2005
Image forming apparatus
RICOH KK10 citations74
US6891554B2May 10, 2005
Method and device for writing control and image forming device
RICOH KK8 citations74
US6839531B2Jan 4, 2005
Belt apparatus used in image formation, and an image formation apparatus
RICOH KK10 citations74
US4487501ADec 11, 1984
Process of exposing photosensitive member
RICOH KK7 citations74
US4474453AOct 2, 1984
Electrostatic copying apparatus
RICOH KK18 citations74
US4365888ADec 28, 1982
Electrostatic copying apparatus
RICOH KK19 citations74
US4261560AApr 14, 1981
Sheet separation apparatus
RICOH KK10 citations74
US4180721ADec 25, 1979
Method of controlling fixing temperature of powder image in electrophotographic copying machine
RICOH KK16 citations74
US4178093ADec 11, 1979
Optomechanical scanning apparatus for copying machine
RICOH KK10 citations74
US4171899AOct 23, 1979
Transfer apparatus
RICOH KK15 citations74
US6718151B2Apr 6, 2004
Image formation apparatus and method of alternating developing units
RICOH KK8 citations73
US4348106ASep 7, 1982
Guide apparatus for movable contact glass in electrophotographic copying machines
RICOH KK9 citations73
US4190349AFeb 26, 1980
Slider reciprocating driving apparatus for use with electrophotographic copying machine
RICOH KK7 citations73
US4128334ADec 5, 1978
Anchorage for a moving body
RICOH KK10 citations73
US4378416AMar 29, 1983
Photosensitive member for use in electrophotographic copying process
RICOH KK7 citations71
US4921236AMay 1, 1990
Recycling automatic document feeder
RICOH KK20 citations70
YANAGAWA NOBUYUKI
1 patentShowing the top 50 of 65 patents by PatentIndex Score.