Inventor · disambiguated record
Hitoshi Ishibashi
Also filed as: ISHIBASHI HITOSHI
60 granted patents·984 citations·filing 1994–2014
99Inventor score
Top patents by PatentIndex Score
60 records- 0198US7251420B2Method and apparatus for image forming capable of effectively detecting toner densityRICOH KK·Filed 2005·Granted Jul 31, 2007·42 cites·30 claims
- 0298US6505022B2Image forming apparatus having protective layer on the surface of image bearing member to avoid adhesion of film of additives to image bearing memberRICOH KK·Filed 2001·Granted Jan 7, 2003·110 cites·40 claims
- 0397US7228081B2Method and apparatus for image forming capable of controlling image-forming process conditionsRICOH KK·Filed 2005·Granted Jun 5, 2007·37 cites·81 claims
- 0496US7260335B2Image-information detecting device and image forming apparatusRICOH KK·Filed 2005·Granted Aug 21, 2007·24 cites·19 claims
- 0595US7305195B2Image forming apparatus, method of calculating amount of toner transfer, methods of converting regular reflection output and diffuse reflection output, method of converting amount of toner transfer, apparatus for detecting amount of toner transfer, gradation pattern, and methods of controlling toner density and image densityRICOH KK·Filed 2006·Granted Dec 4, 2007·13 cites·9 claims
- 0695US6546219B2Method and apparatus for performing a charging process on an image carrying deviceRICOH KK·Filed 2001·Granted Apr 8, 2003·70 cites·22 claims
- 0794US7616909B2Image forming apparatus and image forming methodRICOH KK·Filed 2007·Granted Nov 10, 2009·21 cites·18 claims
- 0893US6823149B2Image forming apparatus with variable speed transferring and fixing devicesRICOH KK·Filed 2003·Granted Nov 23, 2004·43 cites·5 claims
- 0993US6470161B2Apparatus for minimizing toner contamination on an image formation memberRICOH KK·Filed 2001·Granted Oct 22, 2002·65 cites·26 claims
- 1092US7139511B2Image forming apparatus, method of calculating amount of toner transfer, methods of converting regular reflection output and diffuse reflection output, method of converting amount of toner transfer, apparatus for detecting amount of toner transfer, gradation pattern, and methods of controlling toner density and image densityRICOH KK·Filed 2004·Granted Nov 21, 2006·25 cites·25 claims
- 1192US6519428B1Image forming apparatus having mixed toner consumption modeRICOH KK·Filed 2000·Granted Feb 11, 2003·44 cites·24 claims
- 1291US7773899B2Image forming apparatus and method of calculating an amount of toner transfer by converting diffuse reflection output into a conversion valueRICOH KK·Filed 2009·Granted Aug 10, 2010·7 cites·9 claims
- 1391US7493058B2Image forming apparatus and toner concentration controlling methodRICOH KK·Filed 2006·Granted Feb 17, 2009·13 cites·12 claims
- 1491US6360065B1Method and apparatus for image forming capable of effectively generating a consistent charge potentialRICOH KK·Filed 2000·Granted Mar 19, 2002·60 cites·88 claims
- 1590US7881629B2Image forming apparatus and image density control methodRICOH CO LTD·Filed 2007·Granted Feb 1, 2011·11 cites·12 claims
- 1690US7796902B2Image forming condition adjustment control for image forming apparatusRICOH KK·Filed 2009·Granted Sep 14, 2010·11 cites·13 claims
- 1790US7778560B2Image forming apparatus and method of adjusting charge biasRICOH KK·Filed 2007·Granted Aug 17, 2010·10 cites·11 claims
- 1890US7398026B2Method and apparatus for controlling an image densityRICOH KK·Filed 2006·Granted Jul 8, 2008·7 cites·6 claims
- 1990US5659843AImage transferring device for image forming equipmentRICOH KK·Filed 1995·Granted Aug 19, 1997·61 cites·17 claims
- 2090US5438401AMulticolor image forming method and apparatus thereforRICOH KK·Filed 1994·Granted Aug 1, 1995·41 cites·21 claims
- 2187US8045874B2Image forming apparatus and image density control methodRICOH CO LTD·Filed 2009·Granted Oct 25, 2011·9 cites·19 claims
- 2286US8155543B2Image forming apparatus capable of reducing a lengthy duration of an adjustment controlISHIBASHI HITOSHI·Filed 2006·Granted Apr 10, 2012·10 cites·18 claims
- 2386US7546046B2Method and apparatus for controlling an image densityRICOH KK·Filed 2008·Granted Jun 9, 2009·5 cites·4 claims
- 2486US7526219B2Image forming apparatus and method of calculating an amount of toner transfer by converting regular reflection output into a normalized valueRICOH KK·Filed 2007·Granted Apr 28, 2009·5 cites·9 claims
- 2586US7174124B2Tandem color image forming apparatus with an image transfer belt and backup rollerRICOH KK·Filed 2003·Granted Feb 6, 2007·25 cites·36 claims
- 2686US6778797B2Charging roller having elastic memberRICOH KK·Filed 2001·Granted Aug 17, 2004·26 cites·52 claims
- 2785US8279491B2Color image formation apparatus for forming a reference pattern with a plurality of lines having a black color as reference color and for correcting misalignment with respect to the reference patternISHIBASHI HITOSHI·Filed 2008·Granted Oct 2, 2012·8 cites·14 claims
- 2885US7962071B2Developing device and image forming apparatus using sameRICOH CO LTD·Filed 2008·Granted Jun 14, 2011·8 cites·19 claims
- 2985US7551866B2Image forming method and apparatus with improved conversion capability of amount of toner adhesionRICOH KK·Filed 2006·Granted Jun 23, 2009·8 cites·9 claims
- 3085US7548704B2Image forming apparatus effectively conducting a process controlRICOH KK·Filed 2007·Granted Jun 16, 2009·8 cites·12 claims
- 3183US8095025B2Image forming apparatus capable of efficient toner concentration controlISHIBASHI HITOSHI·Filed 2007·Granted Jan 10, 2012·7 cites·20 claims
- 3283US7821677B2Method and apparatus for image forming capable of accurately detecting displacement of transfer images and image densityRICOH KK·Filed 2006·Granted Oct 26, 2010·7 cites·15 claims
- 3383US7672602B2Developing unit and image forming apparatus which forces consumption of tonerRICOH KK·Filed 2006·Granted Mar 2, 2010·7 cites·10 claims
- 3482US5623330AImage forming apparatusRICOH KK·Filed 1996·Granted Apr 22, 1997·45 cites·20 claims
- 3581US7477856B2Method and apparatus for image forming capable of effectively preventing resonance of frequenciesRICOH KK·Filed 2005·Granted Jan 13, 2009·6 cites·17 claims
- 3681US7438379B2Alignment pattern detecting sensor, method of determining acceptance width of the alignment pattern detecting sensor, method of forming alignment pattern, and image forming apparatusRICOH KK·Filed 2006·Granted Oct 21, 2008·5 cites·8 claims
- 3781US7344615B2Method and apparatus for performing a charging process on an image carrying deviceRICOH KK·Filed 2005·Granted Mar 18, 2008·5 cites·6 claims
- 3878US7055928B2Alignment pattern detecting sensor, method of determining acceptance width of the alignment pattern detecting sensor, method of forming alignment pattern, and image forming apparatusRICOH KK·Filed 2003·Granted Jun 6, 2006·13 cites·36 claims
- 3976US7929873B2Image forming apparatus and image density control methodRICOH CO LTD·Filed 2008·Granted Apr 19, 2011·5 cites·15 claims
- 4076US7443535B2Misalignment correction pattern formation method and misalignment correction methodRICOH KK·Filed 2003·Granted Oct 28, 2008·14 cites·11 claims
- 4172US8879963B2Toner supplying device and image forming apparatus using sameHIRAYAMA YUSHI·Filed 2010·Granted Nov 4, 2014·2 cites·16 claims
- 4271US6977022B2Method and apparatus for performing a charging process on an image carrying deviceRICOH KK·Filed 2002·Granted Dec 20, 2005·11 cites·1 claims
- 4371US6782227B2Transfer device for setting a suitable recording medium adsorbing bias, and an image-forming apparatus including the transfer deviceRICOH KK·Filed 2002·Granted Aug 24, 2004·12 cites·24 claims
- 4469US9188924B2Image forming apparatus and image forming methodKANEKO SATOSHI·Filed 2013·Granted Nov 17, 2015·1 cites·15 claims
- 4569US8977148B2Image forming apparatus and image forming methodKANEKO SATOSHI·Filed 2013·Granted Mar 10, 2015·1 cites·13 claims
- 4668US8145100B2Process cartridge including developing unit and incorporated in image forming apparatusHIRAYAMA YUSHI·Filed 2009·Granted Mar 27, 2012·3 cites·13 claims
- 4767US8099006B2Image forming apparatus and image quality correction method used thereinFUJIMORI KOHTA·Filed 2009·Granted Jan 17, 2012·3 cites·19 claims
- 4864US8027605B2Image forming apparatus and image density control methodRICOH CO LTD·Filed 2008·Granted Sep 27, 2011·2 cites·8 claims
- 4962US9152896B2Image forming apparatus and image forming methodKANEKO SATOSHI·Filed 2014·Granted Oct 6, 2015·1 cites·11 claims
- 5062US8009997B2Toner replenishment determination device of an image forming apparatusRICOH CO LTD·Filed 2006·Granted Aug 30, 2011·2 cites·7 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →