Inventor
SAKAI KATSUO
JP37 patents
⚠️ This page may combine multiple inventors who share the name “SAKAI KATSUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
33 patentsUS6597884B2Jul 22, 2003
Image forming apparatus including electrostatic conveyance of charged toner
RICOH KK79 citations97
US6901231B1May 31, 2005
Developing apparatus, developing method, image forming apparatus, image forming method and cartridge thereof
RICOH KK48 citations96
US6708014B2Mar 16, 2004
Electrostatic transportation device, development device and image formation apparatus
RICOH KK66 citations96
US4933727AJun 12, 1990
Color recording apparatus
RICOH KK72 citations96
US5121170AJun 9, 1992
Device for transporting sheet members using an alternating voltage
RICOH KK72 citations95
US5204716AApr 20, 1993
Side-free recording apparatus
RICOH KK39 citations93
US7308222B2Dec 11, 2007
Toner supplying system for an image forming apparatus
RICOH KK29 citations92
US7024142B2Apr 4, 2006
Developing apparatus, developing method, image forming apparatus, image forming method and cartridge thereof
RICOH KK16 citations92
US6947691B2Sep 20, 2005
Electrostatic transportation device, development device and image formation apparatus
RICOH KK24 citations92
US5955228ASep 21, 1999
Method and apparatus for forming a powder image
RICOH KK46 citations92
US4664501AMay 12, 1987
Method of and apparatus for producing duplicates in color
RICOH KK29 citations92
US4655579AApr 7, 1987
Multicolored image forming apparatus
RICOH KK28 citations92
US4615607AOct 7, 1986
Dual-color copier
RICOH KK27 citations92
US4189224AFeb 19, 1980
Two color electrostatic copying machine
RICOH KK36 citations92
US6398345B1Jun 4, 2002
Image forming method and an apparatus for the same, and a cleaning device
RICOH KK40 citations90
US7123864B2Oct 17, 2006
Developing device using electrostatic transport member
RICOH KK19 citations84
US7236720B2Jun 26, 2007
Image forming apparatus and process cartridge
RICOH KK12 citations83
US7187892B2Mar 6, 2007
Toner transport device for image-forming device
RICOH KK13 citations82
US4544935AOct 1, 1985
Recording apparatus
RICOH KK21 citations82
US4335194AJun 15, 1982
Two color electrophotographic process and material
RICOH KK24 citations82
US4690541ASep 1, 1987
Color electrophotographic copying process
RICOH KK21 citations79
US6597887B2Jul 22, 2003
Duplex image transferring device using liquid toner development
RICOH KK12 citations74
US4407917AOct 4, 1983
Information image synthesizing and copying method
RICOH KK12 citations74
US4384033AMay 17, 1983
Process of synthesizing and recording images
RICOH KK11 citations74
US4310610AJan 12, 1982
Two color electrostatographic process
RICOH KK10 citations74
US4281051AJul 28, 1981
Three color electrostatographic process
RICOH KK18 citations74
US4250239AFeb 10, 1981
Color electrostatographic process and material
RICOH KK19 citations74
US4045134AAug 30, 1977
Photosensitive member for use in electrophotographic apparatus and method of manufacturing the same
RICOH KK11 citations74
US7200352B2Apr 3, 2007
Developing apparatus, developing method, image forming apparatus, image forming method and cartridge thereof
RICOH KK8 citations73
US4521502AJun 4, 1985
Color recording method
RICOH KK19 citations73
US4132477AJan 2, 1979
Optical imaging system for electrophotography
RICOH KK12 citations68
US7672604B2Mar 2, 2010
Image forming apparatus and image forming method using electrostatic transport and hopping
RICOH KK3 citations62
US7796294B2Sep 14, 2010
Image forming apparatus capable of a color image, and image forming method for forming a color image
RICOH KK5 citations60