Inventor
FOSTER MARK DUANE
US16 patents
⚠️ This page may combine multiple inventors who share the name “FOSTER MARK DUANE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LEXMARK INT INC
13 patentsUS6678489B1Jan 13, 2004
Two part cartridges with force biasing by printer
LEXMARK INT INC32 citations94
US5926673AJul 20, 1999
Driving mechanism for photosensitive image bearing drum in electrophotographic machines
LEXMARK INT INC102 citations93
US9031451B2May 12, 2015
Toner cartridge having a shutter lock mechanism
LEXMARK INT INC22 citations91
US7305204B2Dec 4, 2007
Two part cartridges with force biasing by printer
LEXMARK INT INC24 citations91
US7139510B2Nov 21, 2006
Two part cartridges with force biasing by printer
LEXMARK INT INC15 citations91
US6771922B2Aug 3, 2004
Toner cartridge
LEXMARK INT INC37 citations90
US6397026B1May 28, 2002
Apparatus and methods for increasing bias force on opposing photosensitive member and developing means
LEXMARK INT INC18 citations78
US6879792B2Apr 12, 2005
Two part cartridges with force biasing by printer
LEXMARK INT INC10 citations72
US6931224B2Aug 16, 2005
Toner cartridge hopper with labyrinth channels for releasing air while trapping toner in cartridge
LEXMARK INT INC7 citations71
US6985683B2Jan 10, 2006
Method of mitigating toner damage in high speed contact developing with end seal
LEXMARK INT INC10 citations70
US6452380B1Sep 17, 2002
Rod and apparatus for calibrating magnetic roll testing apparatus
LEXMARK INT INC3 citations53
US8774684B2Jul 8, 2014
Toner cartridge having a pivoting exit port cover
LEXMARK INT INC0 citations51
US9389576B1Jul 12, 2016
Roll deskewing device for an electrophotographic image forming device
LEXMARK INT INC0 citations41