Inventor · disambiguated record
Kiyoshi Toizumi
Also filed as: TOIZUMI KIYOSHI
32 granted patents·3 pending applications·309 citations·filing 1995–2020
97Inventor score
Top patents by PatentIndex Score
35 records- 0187US6934496B2Developing device conveying toner using a traveling-wave electric field and image forming apparatus using sameSHARP KK·Filed 2002·Granted Aug 23, 2005·31 cites·17 claims
- 0286US6108514ASheet conveying systemSHARP KK·Filed 1999·Granted Aug 22, 2000·39 cites·10 claims
- 0382US6901232B2Developing apparatus and image forming apparatus using progressive wave electric field transportSHARP KK·Filed 2002·Granted May 31, 2005·22 cites·12 claims
- 0482US5956547AImage forming device equipped with fixing deviceSHARP KK·Filed 1998·Granted Sep 21, 1999·32 cites·5 claims
- 0580US5799225AImage forming apparatus having variable transfer and attraction voltageSHARP KK·Filed 1995·Granted Aug 25, 1998·19 cites·9 claims
- 0679US5812923AImage forming apparatus equipped with register rollers for curling transfer paperSHARP KK·Filed 1996·Granted Sep 22, 1998·25 cites·17 claims
- 0776US6858369B1Toner and manufacturing method thereofSHARP KK·Filed 2003·Granted Feb 22, 2005·15 cites·28 claims
- 0875US7524600B2Electrophotographic tonerSHARP KK·Filed 2006·Granted Apr 28, 2009·4 cites·12 claims
- 0970US6697592B2Developing device, and image forming device having the sameSHARP KK·Filed 2002·Granted Feb 24, 2004·12 cites·18 claims
- 1068US6600892B2Developing device, charging method used therefor, and printing apparatus having the developing deviceSHARP KK·Filed 2002·Granted Jul 29, 2003·11 cites·44 claims
- 1167US5623329ATransfer device for an image forming apparatusSHARP KK·Filed 1995·Granted Apr 22, 1997·16 cites·36 claims
- 1264US6596454B2Toner and manufacturing method thereofSHARP KK·Filed 2001·Granted Jul 22, 2003·9 cites·18 claims
- 1361US6233422B1Image forming apparatus having transfer drum with transfer paper charging memberSHARP KK·Filed 1999·Granted May 15, 2001·8 cites·27 claims
- 1458US7761020B2Image forming apparatus utilizing cylindrical toner particlesSHARP KK·Filed 2007·Granted Jul 20, 2010·2 cites·14 claims
- 1558US6438346B2Developing device, printing device, and charging method through contactSHARP KK·Filed 2001·Granted Aug 20, 2002·7 cites·16 claims
- 1656US8372572B2Toner, two-component developer, developing device and image forming apparatusSHARP KK·Filed 2011·Granted Feb 12, 2013·0 cites·7 claims
- 1756US6829446B2Development device, charging method used in the development device and image forming device having the development deviceSHARP KK·Filed 2003·Granted Dec 7, 2004·6 cites·36 claims
- 1856US5697034AImage forming apparatus which stably holds a uniform surface potential of a transfer deviceSHARP KK·Filed 1996·Granted Dec 9, 1997·12 cites·30 claims
- 1955US11044375B2Multifunctional apparatus having external recording medium slotSHARP KK·Filed 2020·Granted Jun 22, 2021·0 cites·4 claims
- 2055US8053155B2Toner, two-component developer, developing device, and image forming apparatusSHARP KK·Filed 2008·Granted Nov 8, 2011·1 cites·5 claims
- 2155US6011938AFixing device in image forming deviceSHARP KK·Filed 1998·Granted Jan 4, 2000·11 cites·6 claims
- 2250US6081685ATransfer apparatus having a transfer drumSHARP KK·Filed 1999·Granted Jun 27, 2000·9 cites·16 claims
- 2350US6026256AImage forming apparatusSHARP KK·Filed 1998·Granted Feb 15, 2000·5 cites·12 claims
- 2446US6259869B1Image forming apparatusSHARP KK·Filed 1998·Granted Jul 10, 2001·4 cites·9 claims
- 2544US7015938B2Charging systemSHARP KK·Filed 2003·Granted Mar 21, 2006·2 cites·13 claims
- 2644US6865350B2Charging method and developing device adopting the sameSHARP KK·Filed 2003·Granted Mar 8, 2005·2 cites·9 claims
- 2743US7283775B2Developing device using specific charging unit for charging toner and image forming device adopting the sameSHARP KK·Filed 2003·Granted Oct 16, 2007·2 cites·9 claims
- 2842US2009042121A1Toner, two-component developer, developing device and image forming apparatusTOIZUMI KIYOSHI·Filed 2008·Application pending·0 cites
- 2938US6081686AImage forming apparatus having transfer drum with specific constructionSHARP KK·Filed 1999·Granted Jun 27, 2000·2 cites·9 claims
- 3037US8590372B2Device and method for measuring toner adhesionTOIZUMI KIYOSHI·Filed 2011·Granted Nov 26, 2013·0 cites·9 claims
- 3137US2006024601A1Electrophotographic tonerSHARP KK·Filed 2005·Application pending·0 cites
- 3236US7071960B2Image forming apparatusSHARP KK·Filed 2004·Granted Jul 4, 2006·0 cites·20 claims
- 3336US2010104323A1Toner, developer, developing device and image forming apparatusTOIZUMI KIYOSHI·Filed 2009·Application pending·0 cites
- 3434US6169862B1Image forming apparatus with nip time changing deviceSHARP KK·Filed 1999·Granted Jan 2, 2001·1 cites·21 claims
- 3530US6118954AImage forming apparatus having transfer roller with charge-removing and cleaning devicesSHARP KK·Filed 1998·Granted Sep 12, 2000·0 cites·44 claims
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