Inventor · disambiguated record
Yasunori Chigono
Also filed as: CHIGONO YASUNORI
47 granted patents·4 pending applications·738 citations·filing 1994–2017
98Inventor score
Top patents by PatentIndex Score
51 records- 0197US7783242B2Image forming apparatusCANON KK·Filed 2007·Granted Aug 24, 2010·34 cites·5 claims
- 0296US10151990B2TonerCANON KK·Filed 2017·Granted Dec 11, 2018·16 cites·4 claims
- 0395US6128456AImage forming apparatus having a charging member applying an electric charge through electrically conductive or electroconductive particles to the surface of a photosensitive or image bearing memberCANON KK·Filed 1998·Granted Oct 3, 2000·76 cites·33 claims
- 0494US5570451AImage forming apparatus including plural image forming means and plural recording medium transport passagesCANON KK·Filed 1994·Granted Oct 29, 1996·59 cites·63 claims
- 0590US9442418B2Developing device, process cartridge and image forming apparatusCANON KK·Filed 2015·Granted Sep 13, 2016·4 cites·57 claims
- 0684US6134407ACharging apparatus for charging a moving member to be charged including an elastic rotatable member carrying electroconductive particles on the surface thereofCANON KK·Filed 1998·Granted Oct 17, 2000·29 cites·13 claims
- 0781US7031629B2Image forming apparatus which recovers toner by developing deviceCANON KK·Filed 2003·Granted Apr 18, 2006·20 cites·40 claims
- 0881US6442362B2Image forming apparatus for making recovery and restoration of toners by electrical conductive memberCANON KK·Filed 2000·Granted Aug 27, 2002·19 cites·21 claims
- 0980US5729785AImage forming apparatus with ink jet and electrophotographic image forming meansCANON KK·Filed 1995·Granted Mar 17, 1998·42 cites·37 claims
- 1078US7239831B2Image forming apparatus when a maximum developing bias voltage |V| max and surface potential Vd of a charged image bearing member satisfy: |V| max≦|Vd|CANON KK·Filed 2004·Granted Jul 3, 2007·16 cites·11 claims
- 1178US6549742B1Charging apparatus employing charging particles, and image forming apparatus employing such a charging apparatusCANON KK·Filed 2001·Granted Apr 15, 2003·16 cites·24 claims
- 1278US6301459B1Charging apparatus with first and second charging membersCANON KK·Filed 2000·Granted Oct 9, 2001·13 cites·34 claims
- 1375US6226480B1Image forming apparatus supplying charging accelerating particles to image bearing body in non-image formingCANON KK·Filed 1999·Granted May 1, 2001·23 cites·13 claims
- 1474US8835089B2Toner and method for producing the same, and two-component type developerCANON KK·Filed 2012·Granted Sep 16, 2014·2 cites·8 claims
- 1572US6847796B2Charging member and image forming apparatus provided with the sameCANON KK·Filed 2003·Granted Jan 25, 2005·12 cites·23 claims
- 1671US6212346B1Charging member for holding electrically conductive particles in cellsCANON KK·Filed 1999·Granted Apr 3, 2001·20 cites·8 claims
- 1770US6904253B2Charging member having an elastic foam member including cell portions whose gap ratio is 5% to 50%, charging apparatus, process cartridge, and image forming apparatus having such charging memberCANON KK·Filed 2002·Granted Jun 7, 2005·11 cites·29 claims
- 1870US6081681ACharging device, charging method, process cartridge and image forming apparatusCANON KK·Filed 1998·Granted Jun 27, 2000·38 cites·51 claims
- 1970US6038420ACharging device, charging method and image forming apparatusCANON KK·Filed 1998·Granted Mar 14, 2000·19 cites·9 claims
- 2068US6301455B1Charging member, charging device and image forming apparatus wherein deposition of magnetic particles to a member to be charged is effectively preventedCANON KK·Filed 2000·Granted Oct 9, 2001·8 cites·11 claims
- 2167US5734390AImage forming apparatusCANON KK·Filed 1995·Granted Mar 31, 1998·36 cites·26 claims
- 2266US7233758B2Developing apparatus featuring a developer carrying member with an elastic surface layerCANON KK·Filed 2004·Granted Jun 19, 2007·9 cites·19 claims
- 2366US6615010B2Electrifier for charging developer carrying member using charge particles, including charge rotary member and nip forming member having bias polarity the same as developer polarityCANON KK·Filed 2001·Granted Sep 2, 2003·9 cites·30 claims
- 2466US6553199B2Charging device, process cartridge and image forming apparatusCANON KK·Filed 2001·Granted Apr 22, 2003·9 cites·37 claims
- 2566US6298205B1Charging apparatus which stores electrically conductive particles in granule formCANON KK·Filed 1999·Granted Oct 2, 2001·16 cites·6 claims
- 2666US6061539ACharging member, charging device and image forming apparatusCANON KK·Filed 1995·Granted May 9, 2000·13 cites·37 claims
- 2766US6038418ACharging method and a charging device for charging a member to be charged by a flexible charging memberCANON KK·Filed 1998·Granted Mar 14, 2000·16 cites·29 claims
- 2865US5659852AImage forming method, image forming apparatus and process cartridgeCANON KK·Filed 1996·Granted Aug 19, 1997·17 cites·223 claims
- 2964US6519433B1Image forming apparatus in which electroconductive particles are supplied to charging means from developing device by way of image bearing memberCANON KK·Filed 2000·Granted Feb 11, 2003·9 cites·10 claims
- 3064US6163671AContact charger having charging performance enhancing particles existing at a contact portion between the contact charger and the member to be chargedCANON KK·Filed 1999·Granted Dec 19, 2000·15 cites·12 claims
- 3163US6580889B1Image forming apparatus having a member to be charged, injection charging means having an elastic member for press-contacting the member to be charged, and electroconductive particles between the elastic member and the member to be chargedCANON KK·Filed 2000·Granted Jun 17, 2003·7 cites·18 claims
- 3262US5729802AContact charger for charging a photosensitive memberCANON KK·Filed 1996·Granted Mar 17, 1998·15 cites·8 claims
- 3361US6173144B1Image forming apparatus which supplies image bearing member with electrically conductive particles during developmentCANON KK·Filed 1999·Granted Jan 9, 2001·14 cites·11 claims
- 3460US6466758B2Developing apparatus having foreign matter accumulating spaceCANON KK·Filed 2001·Granted Oct 15, 2002·7 cites·8 claims
- 3560US6233419B1Charging device and image forming apparatusCANON KK·Filed 1998·Granted May 15, 2001·13 cites·25 claims
- 3659US6118965AImage forming apparatus having a contact-type chargerCANON KK·Filed 1998·Granted Sep 12, 2000·13 cites·33 claims
- 3756US7515861B2Image heating apparatus controlling relative positions of fixing belt and recording materialCANON KK·Filed 2006·Granted Apr 7, 2009·1 cites·4 claims
- 3854US7031641B2Image-forming apparatus having pre-charge exposure device for image carrierCANON KK·Filed 2004·Granted Apr 18, 2006·5 cites·24 claims
- 3951US5774769ACharging apparatus and image forming apparatusCANON KK·Filed 1997·Granted Jun 30, 1998·9 cites·38 claims
- 4049US6389254B2Charging member holding charge accelerating particles in a continuous bubbleCANON KK·Filed 1999·Granted May 14, 2002·8 cites·12 claims
- 4149US6035162ACharging device and image forming apparatusCANON KK·Filed 1998·Granted Mar 7, 2000·8 cites·13 claims
- 4248US5754927AMagnetic charging brush having particular magnetic fieldsCANON KK·Filed 1996·Granted May 19, 1998·8 cites·19 claims
- 4340US2012060707A1Hologram forming apparatus and hologram forming methodCHIGONO YASUNORI·Filed 2011·Application pending·0 cites
- 4438US6473582B2Contact-type charging device having a plurality of projections over the surface of the charging deviceCANON KK·Filed 1998·Granted Oct 29, 2002·4 cites·43 claims
- 4537US2012003346A1Sheet surface treating apparatusCHIGONO YASUNORI·Filed 2011·Application pending·0 cites
- 4636US8718529B2Image forming apparatus providing glossiness treatmentFUKATSU MAKOTO·Filed 2011·Granted May 6, 2014·0 cites·16 claims
- 4735US6832062B2Charging apparatus, process cartridge and image forming apparatus having electroconductive particles charged in a nip between a charging member and a member to be chargedCANON KK·Filed 2003·Granted Dec 14, 2004·0 cites·26 claims
- 4835US6788911B2Charging apparatus, process cartridge and image forming apparatusCANON KK·Filed 2002·Granted Sep 7, 2004·0 cites·16 claims
- 4934US8755729B2Glossiness processing apparatus and image forming apparatusHAGIWARA EMI·Filed 2011·Granted Jun 17, 2014·0 cites·15 claims
- 5034US2002141783A1Image-forming apparatus and image-forming methodCANON KK·Filed 2002·Application pending·0 cites
Showing the top 50 of 51 patent records by PatentIndex Score.
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