Inventor
SASAKI SACHIO
JP20 patents
⚠️ This page may combine multiple inventors who share the name “SASAKI SACHIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
19 patentsUS6134395AOct 17, 2000
Image forming apparatus capable of preventing adhesion of a developer to an uncharged region of a latent image carrier
FUJITSU LTD21 citations92
US5572299ANov 5, 1996
Developing device using two-component developer
FUJITSU LTD24 citations92
US5587774ADec 24, 1996
Cleanerless electrographic imaging device
FUJITSU LTD28 citations91
US5852757ADec 22, 1998
Electrophotographic image forming apparatus having a device for recovering residual toner
FUJITSU LTD32 citations90
US4804994AFeb 14, 1989
Compact electrophotographic printing apparatus having an improved development means and a method for operating the same
FUJITSU LTD19 citations81
US6341207B1Jan 22, 2002
Cleanerless image forming method and system therefor
FUJITSU LTD9 citations73
US5697013ADec 9, 1997
Image forming apparatus for forming images in accordance with an electrophotographic process
FUJITSU LTD8 citations73
US5467176ANov 14, 1995
Image forming method and apparatus with magnetic brush
FUJITSU LTD7 citations73
US5426496AJun 20, 1995
Printing apparatus
FUJITSU LTD12 citations73
US5424489AJun 13, 1995
Magnetic brush developing apparatus
FUJITSU LTD7 citations73
US5678143AOct 14, 1997
Image forming apparatus for collecting residual toner from a drum using an AC voltage
FUJITSU LTD12 citations72
US5200784AApr 6, 1993
Transferring device controlled for preventing the leading edge of a sheet from being excessively charged
FUJITSU LTD8 citations71
US7149438B2Dec 12, 2006
Consumable-article detecting apparatus, method and program, and image forming apparatus
FUJITSU LTD4 citations62
US5572298ANov 5, 1996
Image forming apparatus having a developing apparatus which includes a partition member for partitioning a developing room and a toner hopper
FUJITSU LTD4 citations62
US5448341ASep 5, 1995
Image forming apparatus
FUJITSU LTD3 citations62
US5778285AJul 7, 1998
Image forming apparatus for collecting residual toner from a drum using an AC voltage
FUJITSU LTD5 citations61
US5396026AMar 7, 1995
Magnetic brush developing apparatus
FUJITSU LTD6 citations61
US6091921AJul 18, 2000
Developing device including developer leveling member
FUJITSU LTD0 citations41
US5845184ADec 1, 1998
Developing unit having improved toner density control
FUJITSU LTD0 citations40