Inventor
SUGIHARA KAZUYUKI
JP35 patents
⚠️ This page may combine multiple inventors who share the name “SUGIHARA KAZUYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
34 patentsUS7212773B2May 1, 2007
Image forming apparatus
RICOH KK107 citations98
US6336020B1Jan 1, 2002
Image forming apparatus having an improved developer-supplying mechanism and method thereof
RICOH KK86 citations98
US6104900AAug 15, 2000
Image forming apparatus having an improved developer-supplying mechanism and method thereof
RICOH KK97 citations98
US6226481B1May 1, 2001
Image forming apparatus with control over developing unit during an idle running of an intermediate image transfer body
RICOH KK57 citations96
US6122469ASep 19, 2000
Image forming apparatus including a preventing mechanism for preventing a developing unit from rotating
RICOH KK72 citations96
US6072967AJun 6, 2000
PC drum integrated revolving type developing unit with pull-out supporter
RICOH KK51 citations96
US6070037AMay 30, 2000
Image forming apparatus having improved developer limiting member
RICOH KK71 citations96
US5991569ANov 23, 1999
PC drum integrated revolving type developing unit with pull-out supporter
RICOH KK67 citations96
US5826146AOct 20, 1998
Color image forming device which changes developing bias when switching between developer units
RICOH KK49 citations96
US5768664AJun 16, 1998
Toner container for a rotary developing device
RICOH KK54 citations96
US5765059AJun 9, 1998
Developing device for image forming apparatus and toner container therefor
RICOH KK78 citations96
US5758235AMay 26, 1998
Toner container for a rotary developing device
RICOH KK63 citations96
US5671470ASep 23, 1997
Color image forming device which changes developing bias when switching between developer units
RICOH KK53 citations96
US5384628AJan 24, 1995
Developing device for image forming equipment
RICOH KK67 citations94
US6925277B2Aug 2, 2005
Developing device using a developer carrier formed with grooves and image forming apparatus including the same
RICOH KK26 citations93
US6615014B2Sep 2, 2003
Method and apparatus for image forming capable of performing an effective mixing of development agent
RICOH KK26 citations93
US5956549ASep 21, 1999
Rotary developing device for an image forming apparatus
RICOH KK19 citations93
US5940664AAug 17, 1999
Agitation and charging device for an image forming apparatus
RICOH KK24 citations93
US5850586ADec 15, 1998
Rotary developing device for an image forming apparatus
RICOH KK21 citations93
US5787328AJul 28, 1998
Rotary developing device for an image forming apparatus
RICOH KK33 citations93
US5768662AJun 16, 1998
Toner supply cartridge for rotary developing device
RICOH KK23 citations93
US5761576AJun 2, 1998
Image forming apparatus for supplying power to members of a rotary developing device
RICOH KK26 citations93
US5657115AAug 12, 1997
Rotary developing device for an image forming apparatus
RICOH KK29 citations93
US5646721AJul 8, 1997
Image forming apparatus for supplying power to members of a rotary developing device
RICOH KK34 citations93
US5617198AApr 1, 1997
Image forming apparatus having rotary developing device
RICOH KK34 citations93
US5612769AMar 18, 1997
Submodular unit for use in a modular rotary developing apparatus
RICOH KK25 citations93
US5552877ASep 3, 1996
Image forming apparatus with controlled drive for accurately positioning developing sections of a rotary developing device
RICOH KK45 citations93
US5105226AApr 14, 1992
Developer carrier of a developing device for an image forming apparatus
RICOH KK23 citations93
US7272342B2Sep 18, 2007
Image forming apparatus having a detachable cartridge including a photoconductive drum with axis shaft having a minimal rotational eccentricity, and a method of assembling the image forming apparatus
RICOH KK26 citations92
US7043182B2May 9, 2006
Developer regulating member, developing device, electrophotographic image forming process cartridge, and image forming apparatus including the developer regulating member
RICOH KK35 citations92
US5003354AMar 26, 1991
Method of removing a film from an image carrier of an image forming apparatus
RICOH KK30 citations91
US4975748ADec 4, 1990
Method of removing a film from an image carrier
RICOH KK40 citations91
US6763214B2Jul 13, 2004
Developing device and method for performing effective charging and mixing of developer and image forming apparatus using the developing device
RICOH KK15 citations84
US6751433B2Jun 15, 2004
Developing device and image forming apparatus using the same
RICOH KK7 citations74