Inventor · disambiguated record
Kazuyuki Sugihara
Also filed as: SUGIHARA KAZUYUKI
35 granted patents·2 pending applications·1,537 citations·filing 1989–2008
98Inventor score
Top patents by PatentIndex Score
37 records- 0198US6336020B1Image forming apparatus having an improved developer-supplying mechanism and method thereofRICOH KK·Filed 2000·Granted Jan 1, 2002·86 cites·7 claims
- 0297US7212773B2Image forming apparatusRICOH KK·Filed 2004·Granted May 1, 2007·107 cites·22 claims
- 0397US6104900AImage forming apparatus having an improved developer-supplying mechanism and method thereofRICOH KK·Filed 1998·Granted Aug 15, 2000·97 cites·21 claims
- 0497US5765059ADeveloping device for image forming apparatus and toner container thereforRICOH KK·Filed 1995·Granted Jun 9, 1998·78 cites·6 claims
- 0596US7272342B2Image forming apparatus having a detachable cartridge including a photoconductive drum with axis shaft having a minimal rotational eccentricity, and a method of assembling the image forming apparatusRICOH KK·Filed 2006·Granted Sep 18, 2007·26 cites·14 claims
- 0696US5758235AToner container for a rotary developing deviceRICOH KK·Filed 1997·Granted May 26, 1998·63 cites·3 claims
- 0795US5991569APC drum integrated revolving type developing unit with pull-out supporterRICOH KK·Filed 1998·Granted Nov 23, 1999·67 cites·31 claims
- 0894US6122469AImage forming apparatus including a preventing mechanism for preventing a developing unit from rotatingRICOH KK·Filed 1998·Granted Sep 19, 2000·72 cites·16 claims
- 0994US6070037AImage forming apparatus having improved developer limiting memberRICOH KK·Filed 1999·Granted May 30, 2000·71 cites·10 claims
- 1094US5768664AToner container for a rotary developing deviceRICOH KK·Filed 1997·Granted Jun 16, 1998·54 cites·15 claims
- 1194US5384628ADeveloping device for image forming equipmentRICOH KK·Filed 1993·Granted Jan 24, 1995·67 cites·33 claims
- 1293US6072967APC drum integrated revolving type developing unit with pull-out supporterRICOH KK·Filed 1999·Granted Jun 6, 2000·51 cites·8 claims
- 1392US6226481B1Image forming apparatus with control over developing unit during an idle running of an intermediate image transfer bodyRICOH KK·Filed 1999·Granted May 1, 2001·57 cites·7 claims
- 1492US5671470AColor image forming device which changes developing bias when switching between developer unitsRICOH KK·Filed 1995·Granted Sep 23, 1997·53 cites·11 claims
- 1591US5826146AColor image forming device which changes developing bias when switching between developer unitsRICOH KK·Filed 1997·Granted Oct 20, 1998·49 cites·30 claims
- 1691US4975748AMethod of removing a film from an image carrierRICOH KK·Filed 1989·Granted Dec 4, 1990·40 cites·13 claims
- 1790US7043182B2Developer regulating member, developing device, electrophotographic image forming process cartridge, and image forming apparatus including the developer regulating memberRICOH KK·Filed 2003·Granted May 9, 2006·35 cites·33 claims
- 1888US5787328ARotary developing device for an image forming apparatusRICOH KK·Filed 1997·Granted Jul 28, 1998·33 cites·2 claims
- 1988US5552877AImage forming apparatus with controlled drive for accurately positioning developing sections of a rotary developing deviceRICOH KK·Filed 1995·Granted Sep 3, 1996·45 cites·9 claims
- 2086US6925277B2Developing device using a developer carrier formed with grooves and image forming apparatus including the sameRICOH KK·Filed 2003·Granted Aug 2, 2005·26 cites·65 claims
- 2186US6615014B2Method and apparatus for image forming capable of performing an effective mixing of development agentRICOH KK·Filed 2001·Granted Sep 2, 2003·26 cites·15 claims
- 2286US5646721AImage forming apparatus for supplying power to members of a rotary developing deviceRICOH KK·Filed 1995·Granted Jul 8, 1997·34 cites·1 claims
- 2385US5003354AMethod of removing a film from an image carrier of an image forming apparatusRICOH KK·Filed 1989·Granted Mar 26, 1991·30 cites·17 claims
- 2484US5612769ASubmodular unit for use in a modular rotary developing apparatusRICOH KK·Filed 1994·Granted Mar 18, 1997·25 cites·12 claims
- 2583US5940664AAgitation and charging device for an image forming apparatusRICOH KK·Filed 1997·Granted Aug 17, 1999·24 cites·1 claims
- 2683US5617198AImage forming apparatus having rotary developing deviceRICOH KK·Filed 1995·Granted Apr 1, 1997·34 cites·15 claims
- 2782US5768662AToner supply cartridge for rotary developing deviceRICOH KK·Filed 1994·Granted Jun 16, 1998·23 cites·26 claims
- 2882US5761576AImage forming apparatus for supplying power to members of a rotary developing deviceRICOH KK·Filed 1996·Granted Jun 2, 1998·26 cites·21 claims
- 2980US5850586ARotary developing device for an image forming apparatusRICOH KK·Filed 1997·Granted Dec 15, 1998·21 cites·6 claims
- 3079US5657115ARotary developing device for an image forming apparatusRICOH KK·Filed 1995·Granted Aug 12, 1997·29 cites·12 claims
- 3178US5956549ARotary developing device for an image forming apparatusRICOH KK·Filed 1997·Granted Sep 21, 1999·19 cites·4 claims
- 3278US5105226ADeveloper carrier of a developing device for an image forming apparatusRICOH KK·Filed 1990·Granted Apr 14, 1992·23 cites·14 claims
- 3376US6763214B2Developing device and method for performing effective charging and mixing of developer and image forming apparatus using the developing deviceRICOH KK·Filed 2002·Granted Jul 13, 2004·15 cites·20 claims
- 3459US6751433B2Developing device and image forming apparatus using the sameRICOH KK·Filed 2002·Granted Jun 15, 2004·7 cites·5 claims
- 3559US5296178AMethod of making a mold by spraying metal using a particulate mold release agentCHUGOKU KAKO CO LTD·Filed 1992·Granted Mar 22, 1994·24 cites·3 claims
- 3641US2010284170A1Light diffuser plate and process for production of light diffuser plateAWAJI TOSHIO·Filed 2008·Application pending·0 cites
- 3738US2005031374A1Image forming apparatus having a detachable cartridge including a photoconductive drum with axis shaft having a minimal rotational eccentricity, and a method of assembling the image forming apparatusFiled 2004·Application pending·0 cites
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