Inventor · disambiguated record
Yasuhisa Ehara
Also filed as: EHARA YASUHISA
33 granted patents·3 pending applications·299 citations·filing 2002–2019
97Inventor score
Top patents by PatentIndex Score
36 records- 0197US7587157B2Image forming apparatus capable of correcting a rotation speed of an image carrierRICOH KK·Filed 2007·Granted Sep 8, 2009·30 cites·10 claims
- 0296US8010026B2Image forming system and method of detecting color misregistrationRICOH CO LTD·Filed 2007·Granted Aug 30, 2011·27 cites·16 claims
- 0395US7693468B2Image forming apparatus capable of effectively forming a quality color imageRICOH KK·Filed 2007·Granted Apr 6, 2010·22 cites·12 claims
- 0495US7653332B2Image forming apparatus having enhanced controlling method for reducing deviation of superimposed imagesRICOH KK·Filed 2007·Granted Jan 26, 2010·23 cites·16 claims
- 0595US7630657B2Method, apparatus, and program for image forming capable of effectively adjusting positional deviationRICOH KK·Filed 2007·Granted Dec 8, 2009·23 cites·20 claims
- 0694US7373097B2Printer engine and color image forming device using this printer engine for preventing deviation of transfer positions and overlap deviationRICOH KK·Filed 2005·Granted May 13, 2008·19 cites·18 claims
- 0793US7885587B2Image forming apparatus with color shift correction suppressing periodic fluctuations of a surface moving speed of a latent image supportRICOH CO LTD·Filed 2009·Granted Feb 8, 2011·15 cites·14 claims
- 0892US7532842B2Color printing apparatus capable of color registration difference correctionRICOH KK·Filed 2006·Granted May 12, 2009·14 cites·20 claims
- 0991US7729024B2Color drift error correcting method and image forming apparatusRICOH KK·Filed 2006·Granted Jun 1, 2010·16 cites·13 claims
- 1089US8346111B2Image forming deviceRICOH CO LTD·Filed 2010·Granted Jan 1, 2013·6 cites·7 claims
- 1187US7697867B2Image forming apparatus with fluctuation-pattern detection and fine-tuning-pattern correctionRICOH KK·Filed 2007·Granted Apr 13, 2010·11 cites·20 claims
- 1285US7937007B2Image forming apparatus and image forming method of effectively detecting a speed deviation pattern of the image forming apparatusRICOH CO LTD·Filed 2007·Granted May 3, 2011·7 cites·7 claims
- 1383US7603061B2Image forming apparatusRICOH KK·Filed 2007·Granted Oct 13, 2009·10 cites·20 claims
- 1480US8447212B2Image forming apparatusFUNAMOTO NORIAKI·Filed 2010·Granted May 21, 2013·3 cites·19 claims
- 1580US7778575B2Imaging apparatus adjusting a rotational stop phase based on a calculated rotational phaseRICOH KK·Filed 2007·Granted Aug 17, 2010·6 cites·13 claims
- 1679US8254813B2Multicolor imaging systemFUNAMOTO NORIAKI·Filed 2010·Granted Aug 28, 2012·3 cites·8 claims
- 1778US8340552B2Image forming apparatusMAEHATA YASUHIRO·Filed 2010·Granted Dec 25, 2012·3 cites·14 claims
- 1878US6889022B2Rotationally phase-matched driving device and image forming apparatus including the sameRICOH KK·Filed 2002·Granted May 3, 2005·19 cites·26 claims
- 1975US7366431B2Developing device, process cartridge and image forming apparatusRICOH KK·Filed 2005·Granted Apr 29, 2008·4 cites·18 claims
- 2074US7606505B2Image forming method and apparatus capable of effectively performing charging operationRICOH KK·Filed 2005·Granted Oct 20, 2009·4 cites·20 claims
- 2170US7013102B2Image forming apparatus and method for preventing local damage of gears and controlling deviation of position of color imagesRICOH KK·Filed 2003·Granted Mar 14, 2006·11 cites·11 claims
- 2270US6898400B2Drive apparatus for a rotary member, an image forming apparatus, and a method of assembly for a drive apparatusRICOH KK·Filed 2003·Granted May 24, 2005·11 cites·16 claims
- 2368US8295736B2Image forming apparatusFUNAMOTO NORIAKI·Filed 2009·Granted Oct 23, 2012·3 cites·8 claims
- 2462US8064801B2Drive transmission device, and image forming apparatus and process cartridge using sameSUGIYAMA KEISUKE·Filed 2008·Granted Nov 22, 2011·2 cites·6 claims
- 2558US9772809B2Printed matter delivery system, image forming apparatus, and printed matter delivery apparatusBANNAI KAZUNORI·Filed 2016·Granted Sep 26, 2017·1 cites·12 claims
- 2656US8948679B2Sheet conveyance device and image forming apparatus including sameMURAKAMI HIROAKI·Filed 2010·Granted Feb 3, 2015·1 cites·19 claims
- 2756US8010019B2Image forming apparatusRICOH CO LTD·Filed 2008·Granted Aug 30, 2011·1 cites·11 claims
- 2854US8331822B2Image forming apparatus and image forming method of effectively detecting a speed deviation pattern of the image forming apparatusKOBAYASHI KAZUHIKO·Filed 2011·Granted Dec 11, 2012·0 cites·10 claims
- 2951US7162185B2Transmission for image formation apparatus, method of manufacturing the transmission, and image formation apparatusRICOH KK·Filed 2003·Granted Jan 9, 2007·4 cites·35 claims
- 3049US11378905B2Color registration by varying rotational speed of photosensitive drumHEWLETT PACKARD DEVELOPMENT CO·Filed 2019·Granted Jul 5, 2022·0 cites·20 claims
- 3145US9121477B2Driving device and image forming apparatus including the driving deviceMAEHATA YASUHIRO·Filed 2013·Granted Sep 1, 2015·0 cites·14 claims
- 3241US2008131168A1Image forming apparatusRICOH KK·Filed 2007·Application pending·0 cites
- 3336US8095028B2Image forming apparatus and image forming methodEHARA YASUHISA·Filed 2009·Granted Jan 10, 2012·0 cites·7 claims
- 3436US7991326B2Image forming apparatus having enhanced controlling method for reducing deviation of superimposed imagesRICOH CO LTD·Filed 2006·Granted Aug 2, 2011·0 cites·15 claims
- 3535US2010226676A1Image forming apparatusRICOH KK·Filed 2010·Application pending·0 cites
- 3632US2007122172A1Image forming method and image forming apparatus using the sameEBARA JOH·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →