Inventor · disambiguated record
Katsuhiro Sakaizawa
Also filed as: SAKAIZAWA KATSUHIRO
41 granted patents·709 citations·filing 1993–2012
98Inventor score
Top patents by PatentIndex Score
41 records- 0194US5570451AImage forming apparatus including plural image forming means and plural recording medium transport passagesCANON KK·Filed 1994·Granted Oct 29, 1996·59 cites·63 claims
- 0292US5570166ADeveloping apparatus that applies voltage to developer layer thickness regulating memberCANON KK·Filed 1994·Granted Oct 29, 1996·46 cites·18 claims
- 0392US5519472ADeveloping apparatus using elastic bladeCANON KK·Filed 1994·Granted May 21, 1996·46 cites·17 claims
- 0489US7068956B2Image forming apparatus and control method for the image forming apparatusCANON KK·Filed 2005·Granted Jun 27, 2006·9 cites·13 claims
- 0586US7020419B2Image formation apparatus, and control method for image formation apparatusCANON KK·Filed 2005·Granted Mar 28, 2006·7 cites·11 claims
- 0686US6751423B2Developing apparatus and image forming apparatusCANON KK·Filed 2002·Granted Jun 15, 2004·26 cites·36 claims
- 0785US6229980B1Developing apparatus featuring first and second developer chambers and guide member for directing stripped-off developerCANON KK·Filed 1998·Granted May 8, 2001·36 cites·15 claims
- 0884US6915094B2Composition for accessing a memory in image formation apparatus and method for accessing a memory in image formation apparatusCANON KK·Filed 2003·Granted Jul 5, 2005·19 cites·8 claims
- 0983US6714754B2Developing roller for electrophotography, developing apparatus, apparatus unit and image forming apparatusCANON KK·Filed 2002·Granted Mar 30, 2004·20 cites·115 claims
- 1083US6345166B1Developer scraping member and developing apparatusCANON KK·Filed 2000·Granted Feb 5, 2002·23 cites·56 claims
- 1183US5970279AImage forming apparatusCANON KK·Filed 1998·Granted Oct 19, 1999·34 cites·12 claims
- 1282US6438331B2Image forming apparatus with cleaning sequence of contact charging membersCANON KK·Filed 2000·Granted Aug 20, 2002·23 cites·25 claims
- 1381US5809379AElectrophotography having photosensitive member with charge blocking overlayerCANON KK·Filed 1997·Granted Sep 15, 1998·32 cites·17 claims
- 1481US5561500AImage forming apparatus with plural types of image forming devicesCANON KK·Filed 1995·Granted Oct 1, 1996·45 cites·36 claims
- 1580US5729785AImage forming apparatus with ink jet and electrophotographic image forming meansCANON KK·Filed 1995·Granted Mar 17, 1998·42 cites·37 claims
- 1679US6560426B2Image forming apparatusCANON KK·Filed 2001·Granted May 6, 2003·18 cites·19 claims
- 1778US5534982ADeveloping apparatusCANON KK·Filed 1994·Granted Jul 9, 1996·23 cites·9 claims
- 1877US6647229B2Image forming apparatus with flexible charging member for use with spherical tonerCANON KK·Filed 2002·Granted Nov 11, 2003·16 cites·17 claims
- 1977US6397032B1Image forming apparatus including a developer bearing member having multiple layersCANON KK·Filed 2000·Granted May 28, 2002·17 cites·20 claims
- 2075US5311268AFixing device using fuzzy inferenceCANON KK·Filed 1993·Granted May 10, 1994·20 cites·9 claims
- 2174US6484007B1Image forming apparatus featuring a conductive developing roller including a mandrel, an elastic layer, an intermediate layer, and a charge-providing layer formed thereonCANON KK·Filed 2000·Granted Nov 19, 2002·13 cites·45 claims
- 2273US7773923B2Developing apparatus and image forming apparatusCANON KK·Filed 2008·Granted Aug 10, 2010·4 cites·9 claims
- 2370US8019260B2Image forming apparatusCANON KK·Filed 2010·Granted Sep 13, 2011·1 cites·3 claims
- 2470US8019258B2Developing apparatusCANON KK·Filed 2010·Granted Sep 13, 2011·1 cites·7 claims
- 2570US7734205B2Image forming apparatusCANON KK·Filed 2008·Granted Jun 8, 2010·3 cites·9 claims
- 2668US6954595B2Image forming apparatus featuring a developer carrying member with a controlled operation time and related control methodCANON KK·Filed 2003·Granted Oct 11, 2005·9 cites·27 claims
- 2767US5734390AImage forming apparatusCANON KK·Filed 1995·Granted Mar 31, 1998·36 cites·26 claims
- 2866US6611669B2Image forming apparatus with superposed direct current and alternating current charging voltageCANON KK·Filed 2001·Granted Aug 26, 2003·10 cites·20 claims
- 2966US6564027B2Image forming apparatusCANON KK·Filed 2001·Granted May 13, 2003·10 cites·17 claims
- 3066US6389253B1Image forming apparatus featuring a regulating member for regulating a number of layers of a developer carried by a developer carrying memberCANON KK·Filed 2000·Granted May 14, 2002·10 cites·12 claims
- 3166US5436709AFixing device which controls an energizing condition of a heater after fixing operationCANON KK·Filed 1993·Granted Jul 25, 1995·15 cites·13 claims
- 3264US7668490B2Developing apparatus having developer supplying member in spaced apart relationship with developer carrying memberCANON KK·Filed 2006·Granted Feb 23, 2010·2 cites·3 claims
- 3360US6376087B1Developing agent carrier, developing unit, and image forming apparatusCANON KK·Filed 1999·Granted Apr 23, 2002·13 cites·27 claims
- 3460US6185387B1Image forming apparatusCANON KK·Filed 1998·Granted Feb 6, 2001·14 cites·44 claims
- 3558US8489011B2Image forming apparatus and image forming systemCANON KK·Filed 2012·Granted Jul 16, 2013·0 cites·4 claims
- 3658US7962076B2Image forming apparatusCANON KK·Filed 2006·Granted Jun 14, 2011·1 cites·5 claims
- 3758US7840168B2Developing apparatusCANON KK·Filed 2007·Granted Nov 23, 2010·1 cites·14 claims
- 3852US7890032B2Developing apparatus having a scraping memberCANON KK·Filed 2009·Granted Feb 15, 2011·0 cites·13 claims
- 3947US6603935B2Image forming apparatus featuring application of superimposed DC and AC voltages and DC voltageCANON KK·Filed 2002·Granted Aug 5, 2003·3 cites·21 claims
- 4046US8437678B2Image forming apparatus and image forming systemHAGIWARA KAZUNARI·Filed 2009·Granted May 7, 2013·0 cites·19 claims
- 4131US5587773AElectrophotographic apparatus for performing image exposure and development simultaneouslyCANON KK·Filed 1994·Granted Dec 24, 1996·2 cites·4 claims
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