Inventor
UTAKA SHIGENOBU
JP8 patents
Patents
8 patentsUS5467176ANov 14, 1995
Image forming method and apparatus with magnetic brush
FUJITSU LTD7 citations73
US6091925AJul 18, 2000
Fixing unit with undirectional clutch mechanism and image forming apparatus with sealing member and agitating mechanism
FUJITSU LTD10 citations72
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
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
US5845184ADec 1, 1998
Developing unit having improved toner density control
FUJITSU LTD0 citations40