Inventor · disambiguated record
Nobuyuki Yanagawa
Also filed as: MOCHIZUKI MANABU · TABATA YASUHIRO · TAGAWA KAZUAKI · WATANABE TSUTOMU
65 granted patents·1 pending application·1,596 citations·filing 1974–2008
99Inventor score
Top patents by PatentIndex Score
66 records- 0198US6402317B2Ink-jet recording of images with improved clarity of imagesRICOH KK·Filed 2001·Granted Jun 11, 2002·136 cites·17 claims
- 0297US6674982B2Image forming apparatus including components mounted and/or dismounted in selected orderRICOH KK·Filed 2001·Granted Jan 6, 2004·81 cites·196 claims
- 0396US6257716B1Ink-jet recording of images with improved clarity of imagesRICOH KK·Filed 1998·Granted Jul 10, 2001·79 cites·21 claims
- 0496US4204668APaper feeding apparatusRICOH KK·Filed 1978·Granted May 27, 1980·46 cites·31 claims
- 0595US7070269B2Recording method and apparatus with an intermediate transfer medium based on transfer-type recording mechanismRICOH KK·Filed 2004·Granted Jul 4, 2006·35 cites·10 claims
- 0694US6439713B1Powder composition and process of forming liquid ink image using sameRICOH KK·Filed 1999·Granted Aug 27, 2002·97 cites·18 claims
- 0794US6215974B1Image forming apparatus with a toner mounter having a vibration apparatusRICOH KK·Filed 1999·Granted Apr 10, 2001·69 cites·34 claims
- 0894US4364656AElectrophotographic copying machineRICOH KK·Filed 1980·Granted Dec 21, 1982·34 cites·20 claims
- 0993US4406535ADevelopment apparatusRICOH KK·Filed 1981·Granted Sep 27, 1983·40 cites·20 claims
- 1093US4074217ACleaning unit for an optical system in a copying machineRICOH KK·Filed 1976·Granted Feb 14, 1978·24 cites·8 claims
- 1192US6832061B2Image forming apparatus with selectively lockable intermediate members for supporting developing and forming devices of sameRICOH KK·Filed 2002·Granted Dec 14, 2004·29 cites·45 claims
- 1292US6256461B1Image forming apparatus with an intermediate transfer body including reference markers for controlling the sameRICOH KK·Filed 2000·Granted Jul 3, 2001·46 cites·48 claims
- 1391US6157797AImage forming apparatus with integrated rotatable image carrier and writing device and method of assembling the sameRICOH KK·Filed 1998·Granted Dec 5, 2000·54 cites·46 claims
- 1491US4161644AElectrophotographic apparatus comprising improved thermal fixing meansRICOH KK·Filed 1977·Granted Jul 17, 1979·33 cites·7 claims
- 1590US6396528B1Image forming system, intermediate transfer medium and method with temporary attachment featuresRICOH KK·Filed 1998·Granted May 28, 2002·51 cites·30 claims
- 1690US4451139ACleaning apparatus for photoconductive elementRICOH KK·Filed 1982·Granted May 29, 1984·37 cites·7 claims
- 1790US4403851AElectrostatic copying machine comprising improved arrangement of operating unitsRICOH KK·Filed 1981·Granted Sep 13, 1983·35 cites·24 claims
- 1889US6837578B2Recording method and apparatus with an intermediate transfer medium based on transfer-type recording mechanismRICOH KK·Filed 2003·Granted Jan 4, 2005·26 cites·8 claims
- 1988US6292641B1Image forming apparatus selectively operating one of a plurality of developing units and a method for controlling a switching operation for the developing unitsRICOH KK·Filed 1998·Granted Sep 18, 2001·46 cites·18 claims
- 2087US6623816B1Recording method and apparatus with an intermediate transfer medium based on transfer-type recording mechanismRICOH KK·Filed 1999·Granted Sep 23, 2003·43 cites·15 claims
- 2186US6222566B1Image formation apparatus and method thereofRICOH KK·Filed 1999·Granted Apr 24, 2001·38 cites·11 claims
- 2285US4359670ALamp intensity control apparatus comprising preset meansRICOH KK·Filed 1980·Granted Nov 16, 1982·50 cites·7 claims
- 2384US7082274B2Image forming apparatus with components removable in preselected direction and orderRICOH KK·Filed 2003·Granted Jul 25, 2006·20 cites·34 claims
- 2484US4615607ADual-color copierRICOH KK·Filed 1984·Granted Oct 7, 1986·27 cites·8 claims
- 2583US4402103ACleaning unit for copying machineRICOH KK·Filed 1981·Granted Sep 6, 1983·28 cites·18 claims
- 2683US4183652APhotoconductor sheet clamp apparatusRICOH KK·Filed 1978·Granted Jan 15, 1980·21 cites·17 claims
- 2783US4155545ASheet feed apparatus for electrostatic copying machine or the likeRICOH KK·Filed 1977·Granted May 22, 1979·21 cites·10 claims
- 2880US4449810AElectrophotographic copying machine with means for mixing and removing toner and an integral exposure plateRICOH KK·Filed 1982·Granted May 22, 1984·22 cites·10 claims
- 2979US7149446B2Belt apparatus used in image formation, and an image formation apparatusRICOH KK·Filed 2005·Granted Dec 12, 2006·4 cites·29 claims
- 3079US4178093AOptomechanical scanning apparatus for copying machineRICOH KK·Filed 1977·Granted Dec 11, 1979·10 cites·14 claims
- 3178US6920291B2Belt apparatus used in image formation, and an image formation apparatusRICOH KK·Filed 2004·Granted Jul 19, 2005·12 cites·31 claims
- 3278US6332066B1Multicolor image forming method and apparatus using an intermediate transfer belt and apparatus having plural developing units for the sameRICOH KK·Filed 1997·Granted Dec 18, 2001·27 cites·49 claims
- 3377US4180721AMethod of controlling fixing temperature of powder image in electrophotographic copying machineRICOH KK·Filed 1977·Granted Dec 25, 1979·16 cites·6 claims
- 3476US4365888AElectrostatic copying apparatusRICOH KK·Filed 1980·Granted Dec 28, 1982·19 cites·18 claims
- 3575US7539439B2Image carrier toner unit and image forming apparatusRICOH KK·Filed 2006·Granted May 26, 2009·4 cites·19 claims
- 3675US4474453AElectrostatic copying apparatusRICOH KK·Filed 1980·Granted Oct 2, 1984·18 cites·18 claims
- 3775US4372547ASheet feed apparatusRICOH KK·Filed 1981·Granted Feb 8, 1983·21 cites·13 claims
- 3875US4171899ATransfer apparatusRICOH KK·Filed 1977·Granted Oct 23, 1979·15 cites·26 claims
- 3974US6919911B2Image forming apparatusRICOH KK·Filed 2004·Granted Jul 19, 2005·10 cites·10 claims
- 4072US6839531B2Belt apparatus used in image formation, and an image formation apparatusRICOH KK·Filed 2001·Granted Jan 4, 2005·10 cites·63 claims
- 4171US7450138B2Controlling timing for starting image formationRICOH KK·Filed 2006·Granted Nov 11, 2008·4 cites·10 claims
- 4271US6842598B2Image forming apparatus having a plurality of developing means around an image carrierRICOH KK·Filed 2003·Granted Jan 11, 2005·12 cites·66 claims
- 4369US7583919B2Color image forming apparatus capable of effectively matching registration between elementary color imagesRICOH KK·Filed 2006·Granted Sep 1, 2009·3 cites·16 claims
- 4469US6263178B1Method of applying a bias voltage for image development and method of switching the bias voltage in an image forming apparatusRICOH KK·Filed 1999·Granted Jul 17, 2001·19 cites·18 claims
- 4568US4190349ASlider reciprocating driving apparatus for use with electrophotographic copying machineRICOH KK·Filed 1978·Granted Feb 26, 1980·7 cites·9 claims
- 4667US7502041B2Method and apparatus for image forming capable of synthesizing a full color image without causing deviations of color layersRICOH KK·Filed 2005·Granted Mar 10, 2009·2 cites·31 claims
- 4767US4717939ASlit-scanning type image exposing systemYANAGAWA NOBUYUKI·Filed 1985·Granted Jan 5, 1988·12 cites·9 claims
- 4864US7542702B2Image forming apparatus having a simple cassette of image bearing photoconductorsRICOH KK·Filed 2006·Granted Jun 2, 2009·2 cites·7 claims
- 4964US7257350B2Cleaning unit with a light beam path for the passage of a light beamRICOH KK·Filed 2006·Granted Aug 14, 2007·1 cites·21 claims
- 5063US7123858B2Two-station type color image forming apparatus with separately replaceable componentsRICOH KK·Filed 2005·Granted Oct 17, 2006·1 cites·6 claims
Showing the top 50 of 66 patent records by PatentIndex Score.
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