Inventor
YOKOYAMA TOMOAKI
JP27 patents
⚠️ This page may combine multiple inventors who share the name “YOKOYAMA TOMOAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MINOLTA CAMERA KK
23 patentsUS5012285AApr 30, 1991
Developing apparatus including a partitioning arrangement for partitioning the toner accommodating tank
MINOLTA CAMERA KK55 citations96
US5036369AJul 30, 1991
Image forming apparatus
MINOLTA CAMERA KK47 citations91
US4745437AMay 17, 1988
Copier machines
MINOLTA CAMERA KK20 citations82
US5063127ANov 5, 1991
Method for forming multi-color images
MINOLTA CAMERA KK11 citations74
US5040023AAug 13, 1991
Method and apparatus for supplying toner to a developing device in an image forming apparatus
MINOLTA CAMERA KK10 citations74
US5006893AApr 9, 1991
Image forming apparatus with improved toner replenishment
MINOLTA CAMERA KK8 citations74
US4912513AMar 27, 1990
Developing apparatus with variable developing bias voltage
MINOLTA CAMERA KK9 citations74
US4794062ADec 27, 1988
Method for the formation of outline images corresponding to the peripheral outlines of document's images
MINOLTA CAMERA KK8 citations74
US4785331ANov 15, 1988
Electrophotographic copying method and apparatus
MINOLTA CAMERA KK13 citations74
US4766458AAug 23, 1988
Developing apparatus for use in image-forming system and developing process employing said developing apparatus
MINOLTA CAMERA KK12 citations74
US5491541AFeb 13, 1996
Developing apparatus having adjacent similar magnetic poles
MINOLTA CAMERA KK9 citations73
US5283615AFeb 1, 1994
Image forming apparatus having a plurality of developing devices
MINOLTA CAMERA KK14 citations73
US5122843AJun 16, 1992
Image forming apparatus having developing devices which use different size toner particles
MINOLTA CAMERA KK15 citations73
US5038176AAug 6, 1991
Image forming apparatus having plural magnetic brush developing devices
MINOLTA CAMERA KK10 citations72
US4917043AApr 17, 1990
Developing device in an image forming apparatus
MINOLTA CAMERA KK6 citations63
US4835566AMay 30, 1989
Electrophotographic copying apparatus
MINOLTA CAMERA KK3 citations63
US4828953AMay 9, 1989
Method for the formation of outline images corresponding to the peripheral outlines of document's images
MINOLTA CAMERA KK5 citations63
US4792775ADec 20, 1988
Method for the formation of outline images corresponding to the peripheral outlines of document's images
MINOLTA CAMERA KK4 citations63
US5442425AAug 15, 1995
Developing apparatus
MINOLTA CAMERA KK6 citations62
US4897331AJan 30, 1990
Reversal image forming method
MINOLTA CAMERA KK4 citations62
US4891287AJan 2, 1990
Image editing method
MINOLTA CAMERA KK4 citations62
US4821071AApr 11, 1989
Electrophotographic copiers
MINOLTA CAMERA KK5 citations62
US4924270AMay 8, 1990
Toner supply device for use in image forming apparatus
MINOLTA CAMERA KK5 citations61