Inventor · disambiguated record
Tomohiro Nakajima
Also filed as: NAKAJIMA TOMOHIRO
95 granted patents·8 pending applications·2,357 citations·filing 1986–2020
99Inventor score
Top patents by PatentIndex Score
103 records- 0198US6400917B2Image forming apparatus for reducing banding caused by vibration of stacked image forming cartridgesRICOH KK·Filed 2001·Granted Jun 4, 2002·82 cites·18 claims
- 0298US6236820B1Image forming apparatus for reducing banding caused by vibration of stacked image forming cartridgesRICOH KK·Filed 1999·Granted May 22, 2001·75 cites·15 claims
- 0397US6657765B2Optical deflecting unit, optical scanning unit, image forming apparatus, and method of producing optical unitRICOH KK·Filed 2002·Granted Dec 2, 2003·113 cites·24 claims
- 0496US6697588B2Image forming apparatusRICOH KK·Filed 2003·Granted Feb 24, 2004·35 cites·27 claims
- 0596US6621512B2Multi-beam light source device and multi-beam scanning apparatus using the sameRICOH KK·Filed 2001·Granted Sep 16, 2003·110 cites·44 claims
- 0696US6466754B2Image forming apparatus for reducing banding caused by vibration of stacked image forming cartridgesRICOH KK·Filed 2001·Granted Oct 15, 2002·40 cites·4 claims
- 0795US7697180B2Light deflector, optical scanner, and image forming apparatusRICOH KK·Filed 2006·Granted Apr 13, 2010·29 cites·8 claims
- 0895US6580887B2Image forming apparatus including structural members between consecutive optical writing devicesRICOH KK·Filed 2002·Granted Jun 17, 2003·32 cites·37 claims
- 0994US7511868B2Multi-beam luminous source apparatus, an optical scanning apparatus, and an image formation apparatusRICOH KK·Filed 2006·Granted Mar 31, 2009·22 cites·22 claims
- 1094US7286786B2Image forming method and apparatus including dismountable cartridgesRICOH KK·Filed 2005·Granted Oct 23, 2007·10 cites·55 claims
- 1194US7068296B2Optical scanning device for reducing a dot position displacement at a joint of scanning linesRICOH KK·Filed 2002·Granted Jun 27, 2006·80 cites·12 claims
- 1294US6768886B2Image forming apparatusRICOH KK·Filed 2003·Granted Jul 27, 2004·28 cites·14 claims
- 1394US5999345AMulti-beam light source unitRICOH KK·Filed 1998·Granted Dec 7, 1999·131 cites·40 claims
- 1494US5936756ACompact scanning optical systemRICOH KK·Filed 1997·Granted Aug 10, 1999·124 cites·15 claims
- 1593US7710445B2Light source unit, optical scan apparatus, and image formation apparatusRICOH KK·Filed 2008·Granted May 4, 2010·14 cites·19 claims
- 1693US7495813B2Optical scanning device and image forming apparatusRICOH KK·Filed 2006·Granted Feb 24, 2009·14 cites·22 claims
- 1793US6839157B2Method and apparatus for multi-beam optical scanning capable of effectively adjusting a scanning line pitchRICOH KK·Filed 2002·Granted Jan 4, 2005·54 cites·7 claims
- 1892US7561318B2Optical scanning apparatus and image forming apparatusRICOH KK·Filed 2006·Granted Jul 14, 2009·14 cites·10 claims
- 1992US7333254B2Optical scanning apparatus, illuminant apparatus and image forming apparatusRICOH KK·Filed 2003·Granted Feb 19, 2008·39 cites·3 claims
- 2092US7139509B2Image forming apparatus including image transfer belt conveying a recording medium upwardRICOH KK·Filed 2005·Granted Nov 21, 2006·7 cites·28 claims
- 2192US6760557B2Image forming apparatusRICOH KK·Filed 2003·Granted Jul 6, 2004·19 cites·96 claims
- 2291US7800641B2Light source unit, optical scan apparatus, and image formation apparatusRICOH KK·Filed 2008·Granted Sep 21, 2010·12 cites·7 claims
- 2391US6995885B2Vibrating mirror, optical scanner using vibrating mirror, and image reproducing and forming apparatusRICOH KK·Filed 2004·Granted Feb 7, 2006·45 cites·14 claims
- 2491US5786594AMulti-beam pitch adjustment system and methodRICOH KK·Filed 1997·Granted Jul 28, 1998·136 cites·74 claims
- 2590US7729031B2Light-source device, optical scanning device, and image forming apparatusRICOH KK·Filed 2007·Granted Jun 1, 2010·13 cites·19 claims
- 2690US7532227B2Optical scanner and image forming apparatusRICOH KK·Filed 2003·Granted May 12, 2009·37 cites·14 claims
- 2790US6775041B1Multibeam scanning apparatusRICOH KK·Filed 2000·Granted Aug 10, 2004·38 cites·6 claims
- 2889US7468824B2Imaging apparatus including optical scanning device with deflecting mirror module, and method of deflecting with the mirror moduleRICOH KK·Filed 2005·Granted Dec 23, 2008·9 cites·17 claims
- 2989US7457562B2Image forming apparatus with image forming cartridges arranged one above anotherRICOH KK·Filed 2006·Granted Nov 25, 2008·5 cites·27 claims
- 3089US7050739B2Image forming apparatus with horizontal structural membersRICOH KK·Filed 2004·Granted May 23, 2006·15 cites·118 claims
- 3188US7956882B2Multiple-beam scanning device and image forming apparatus having the multiple-beam scanning deviceRICOH CO LTD·Filed 2006·Granted Jun 7, 2011·12 cites·13 claims
- 3288US7801462B2Image forming apparatus having a plurality of photoconductive elements, a plurality of optical writing devices and a stayRICOH KK·Filed 2008·Granted Sep 21, 2010·4 cites·28 claims
- 3387US7453615B2Optical scanning apparatus having support members outside the housing for supporting a housing and reflectors, including a pair of ribs and warp preventing member engage with groove formed by ribs, and an image forming apparatus including the sameRICOH KK·Filed 2006·Granted Nov 18, 2008·15 cites·15 claims
- 3487US7411712B2Optical scanner and image formation apparatusRICOH KK·Filed 2004·Granted Aug 12, 2008·35 cites·24 claims
- 3587US7221493B2Vibration mirror, optical scanning device, and image forming using the same, method for making the same, and method for scanning imageRICOH KK·Filed 2004·Granted May 22, 2007·24 cites·7 claims
- 3687US4953171ASemiconductor laser source unitRICOH KK·Filed 1989·Granted Aug 28, 1990·39 cites·23 claims
- 3786US7525561B2Optical scanner and image forming apparatusRICOH KK·Filed 2006·Granted Apr 28, 2009·8 cites·18 claims
- 3886US6932271B2Optical scan module, optical scanner, optical scan method, image generator and image readerRICOH KK·Filed 2001·Granted Aug 23, 2005·44 cites·77 claims
- 3986US4853710AImaging by laser beam scanningRICOH KK·Filed 1986·Granted Aug 1, 1989·59 cites·13 claims
- 4085US7423787B2Optical scanning module, device, and method, and imaging apparatusRICOH KK·Filed 2002·Granted Sep 9, 2008·26 cites·91 claims
- 4185US7075688B2Multibeam scanning apparatusRICOH KK·Filed 2004·Granted Jul 11, 2006·24 cites·8 claims
- 4285US6972883B2Vibration mirror, optical scanning device, and image forming using the same, method for making the same, and method for scanning imageRICOH KK·Filed 2003·Granted Dec 6, 2005·48 cites·15 claims
- 4384US7471306B2Optical scanning unit and image forming apparatusRICOH KK·Filed 2005·Granted Dec 30, 2008·8 cites·7 claims
- 4484US7170660B2Optical scanner and image forming deviceRICOH KK·Filed 2002·Granted Jan 30, 2007·25 cites·17 claims
- 4584US6980757B2Image forming apparatus with beam slotsRICOH KK·Filed 2003·Granted Dec 27, 2005·10 cites·40 claims
- 4684US6052211ACompact multiple-beam scanning optical systemRICOH KK·Filed 1997·Granted Apr 18, 2000·82 cites·39 claims
- 4783US7417780B2Vibration mirror, optical scanning device, and image forming using the same, method for making the same, and method for scanning imageRICOH KK·Filed 2005·Granted Aug 26, 2008·10 cites·9 claims
- 4883US5793408AOptical scanning apparatus with improved structure for adjusting focus positionRICOH KK·Filed 1995·Granted Aug 11, 1998·47 cites·7 claims
- 4983US5671077AMulti-beam light source device and optical scanning apparatus using the multi-beam source deviceRICOH KK·Filed 1994·Granted Sep 23, 1997·50 cites·21 claims
- 5082US7991321B2Image forming apparatusRICOH CO LTD·Filed 2010·Granted Aug 2, 2011·1 cites·16 claims
Showing the top 50 of 103 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →