Inventor
FUJITA TETSUMARU
JP35 patents
⚠️ This page may combine multiple inventors who share the name “FUJITA TETSUMARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
13 patentsUS7822356B2Oct 26, 2010
Image forming apparatus
RICOH KK2 citations62
US7738803B2Jun 15, 2010
Image forming method and apparatus for effectively charging an image carrier
RICOH KK5 citations62
US7725054B2May 25, 2010
Electrifying apparatus, a processing unit, and an image formation apparatus
RICOH KK3 citations62
US7684732B2Mar 23, 2010
Process unit and image forming apparatus including the same
RICOH KK5 citations62
US7664433B2Feb 16, 2010
Cleaning of a charging member in an image forming apparatus
RICOH KK4 citations62
US7792463B2Sep 7, 2010
Image forming apparatus including a brush member to temporarily capture toner
RICOH KK0 citations51
US7751753B2Jul 6, 2010
Cleanerless image forming apparatus
RICOH KK1 citations51
US7693459B2Apr 6, 2010
Charging device for charging a surface of a latent image bearing member and an image forming apparatus including the charging device
RICOH KK0 citations51
US7539442B2May 26, 2009
Charging unit, process unit including the same, and image forming apparatus including the same
RICOH KK1 citations51
US7796912B2Sep 14, 2010
Image forming method and apparatus which uses alternating voltage to form an electric field for moving toner
RICOH KK0 citations41
US7796935B2Sep 14, 2010
Process cartridge and image forming apparatus including same
RICOH KK0 citations41
US7734223B2Jun 8, 2010
Image forming apparatus and process cartridge employing the same having brush roller charger
RICOH KK0 citations41
US7627270B2Dec 1, 2009
Image forming apparatus that effectively charges a latent image carrier
RICOH KK0 citations41
FUJITA TETSUMARU
6 patentsUS11946860B2Apr 2, 2024
Electronic device
FUJITA TETSUMARU0 citations60
US8452216B2May 28, 2013
Image forming apparatus which mixes new unused toner with used old toner
FUJITA TETSUMARU0 citations50
US12135416B2Nov 5, 2024
Light deflector, distance measuring device, projection device, and mobile object
FUJITA TETSUMARU0 citations49
US9002243B2Apr 7, 2015
Developing device and process unit and image forming apparatus incorporating same
FUJITA TETSUMARU0 citations48
US8688015B2Apr 1, 2014
Development device, processing unit and image forming apparatus
FUJITA TETSUMARU0 citations39
US8406664B2Mar 26, 2013
Image forming apparatus, image forming method, and developing device
FUJITA TETSUMARU0 citations39
MINOLTA CO LTD
5 patentsUS6343201B1Jan 29, 2002
Developing apparatus comprising developing roller that is rotated upward from below in developing area and image forming apparatus using the same
MINOLTA CO LTD36 citations92
US5940661AAug 17, 1999
Image forming apparatus with a charging member which removes smears on an image forming member
MINOLTA CO LTD22 citations92
US5754926AMay 19, 1998
Charging device
MINOLTA CO LTD21 citations92
US6782226B2Aug 24, 2004
Developing device
MINOLTA CO LTD8 citations72
US6134414AOct 17, 2000
Developing apparatus using voltage waveforms with straight line portions
MINOLTA CO LTD3 citations62
RICOH CO LTD
4 patentsUS7907871B2Mar 15, 2011
Image forming apparatus
RICOH CO LTD2 citations62
US7903993B2Mar 8, 2011
Image forming apparatus
RICOH CO LTD2 citations62
US8354164B2Jan 15, 2013
Semiconductive member, and developing roll, charging roll, transfer belt, and image forming apparatus using same
RICOH CO LTD1 citations51
US8036573B2Oct 11, 2011
Process cartridge and image forming apparatus including a toner charge control device with an endless belt
RICOH CO LTD0 citations41