Inventor
MCALPINE ROBERT WATSON
US38 patents
⚠️ This page may combine multiple inventors who share the name “MCALPINE ROBERT WATSON”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LEXMARK INT INC
34 patentsUS9519243B2Dec 13, 2016
Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing
LEXMARK INT INC20 citations92
US9389582B2Jul 12, 2016
Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing
LEXMARK INT INC22 citations92
US9360797B1Jun 7, 2016
Toner cartridge having a movable projection for providing installation feedback to an image forming device
LEXMARK INT INC23 citations92
US6771922B2Aug 3, 2004
Toner cartridge
LEXMARK INT INC37 citations90
USD854078SJul 16, 2019
Toner cartridge
LEXMARK INT INC8 citations84
US9983506B2May 29, 2018
Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing
LEXMARK INT INC6 citations84
US9841722B2Dec 12, 2017
Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing
LEXMARK INT INC5 citations84
US9915894B2Mar 13, 2018
Electrophotographic image forming device having a toner cartridge that includes a movable projection for providing installation feedback
LEXMARK INT INC3 citations83
US10488811B2Nov 26, 2019
Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing
LEXMARK INT INC1 citations73
US10303111B2May 28, 2019
Image forming device having a replaceable unit that includes magnets of varying angular offset for toner level sensing
LEXMARK INT INC1 citations73
US9335656B2May 10, 2016
Toner level sensing using rotatable magnets having varying angular offset
LEXMARK INT INC6 citations73
US10884357B2Jan 5, 2021
Toner cartridge having a movable projection for providing installation feedback to an image forming device
LEXMARK INT INC1 citations72
US10656559B2May 19, 2020
Toner cartridge having a movable projection for providing installation feedback to an image forming device
LEXMARK INT INC1 citations72
USD841730SFeb 26, 2019
Toner cartridge
LEXMARK INT INC2 citations72
US10197944B2Feb 5, 2019
Toner cartridge having a movable projection for providing installation feedback to an image forming device
LEXMARK INT INC1 citations72
US9709925B2Jul 18, 2017
Toner cartridge having a movable projection for providing installation feedback to an image forming device
LEXMARK INT INC2 citations72
US9709928B2Jul 18, 2017
Drive mechanism for an intermediate transfer member module of an electrophotographic imaging device
LEXMARK INT INC2 citations72
US9477178B1Oct 25, 2016
System for determining the open or closed state of a toner cartridge shutter
LEXMARK INT INC3 citations72
US6931224B2Aug 16, 2005
Toner cartridge hopper with labyrinth channels for releasing air while trapping toner in cartridge
LEXMARK INT INC7 citations71
US11156941B2Oct 26, 2021
Toner cartridge having a movable projection for providing installation feedback to an image forming device
LEXMARK INT INC0 citations62
US10921730B2Feb 16, 2021
Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing
LEXMARK INT INC0 citations62
US10921746B2Feb 16, 2021
Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing
LEXMARK INT INC0 citations62
US10036981B2Jul 31, 2018
Toner cartridge having a movable projection for providing installation feedback to an image forming device
LEXMARK INT INC1 citations62
US9488935B1Nov 8, 2016
Drive mechanism for an intermediate transfer member module of an electrophotographic imaging device
LEXMARK INT INC2 citations61
US6990308B1Jan 24, 2006
Image forming device, print cartridge and doctor blade assembly that reduce vibrations at doctoring media nip
LEXMARK INT INC3 citations61
US7167672B2Jan 23, 2007
Method and device for conveying waste toner in an image forming device
LEXMARK INT INC4 citations60
US7231163B2Jun 12, 2007
Apparatus and method of reducing charge roller contamination
LEXMARK INT INC5 citations58
US10719050B2Jul 21, 2020
Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing
LEXMARK INT INC0 citations52
US10591846B2Mar 17, 2020
Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing
LEXMARK INT INC0 citations52
US9477176B1Oct 25, 2016
Toner cartridge having a movable projection for providing installation feedback to an image forming device
LEXMARK INT INC0 citations51
US7310494B2Dec 18, 2007
Developing agent transport and storage
LEXMARK INT INC0 citations49
US10579003B1Mar 3, 2020
Compensation for deficient charge roll in an imaging device
LEXMARK INT INC0 citations47
US9612545B2Apr 4, 2017
Chemically prepared core shell toner formulation including a styrene acrylate polyester copolymer used for the shell
LEXMARK INT INC1 citations47
US10488780B1Nov 26, 2019
Compensation for deficient charge roll in an imaging device
LEXMARK INT INC0 citations36