Inventor
HORRALL PAUL DOUGLAS
US38 patents
⚠️ This page may combine multiple inventors who share the name “HORRALL PAUL DOUGLAS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LEXMARK INT INC
37 patentsUS7321739B1Jan 22, 2008
Cartridge with a handle for use with an image forming device
LEXMARK INT INC54 citations96
US5758233AMay 26, 1998
Toner cartridge with locating on photoconductor shaft
LEXMARK INT INC71 citations96
US5802432ASep 1, 1998
Toner cartridge with housing and pin construction
LEXMARK INT INC65 citations95
US6253046B1Jun 26, 2001
Multi-functional fuser backup roll release mechanism
LEXMARK INT INC74 citations94
US5786571AJul 28, 1998
Wrapped temperature sensing assembly
LEXMARK INT INC92 citations93
US6301456B1Oct 9, 2001
Method and apparatus for inserting a cartridge into an image forming apparatus
LEXMARK INT INC35 citations92
US6009291ADec 28, 1999
Control of photosensitive roller movement
LEXMARK INT INC19 citations92
US5768661AJun 16, 1998
Toner cartridge with external planar installation guides
LEXMARK INT INC51 citations91
US6681094B2Jan 20, 2004
Intermediate transfer member belt/roller configuration for single-pass color electrophotographic printer
LEXMARK INT INC30 citations90
US7831168B2Nov 9, 2010
Imaging units and methods of insertion into an image forming device
LEXMARK INT INC31 citations89
US9291992B1Mar 22, 2016
Positional control features for an imaging unit in an electrophotographic image forming device
LEXMARK INT INC11 citations83
US9285758B1Mar 15, 2016
Positional control features between replaceable units of an electrophotographic image forming device
LEXMARK INT INC13 citations83
US6466763B1Oct 15, 2002
Conveyor and waste toner reservoir for an image-forming apparatus
LEXMARK INT INC16 citations83
US6281918B1Aug 28, 2001
Laser printhead mounting apparatus and printhead skew adjustment mechanism for an electrophotographic machine
LEXMARK INT INC16 citations83
US6697589B1Feb 24, 2004
Fuser latch system
LEXMARK INT INC16 citations82
US7675536B2Mar 9, 2010
Architectures for multi-functional image forming devices
LEXMARK INT INC11 citations81
US7594647B2Sep 29, 2009
Pick mechanism with stack height dependent force for use in an image forming device
LEXMARK INT INC8 citations81
US6580888B2Jun 17, 2003
Contact development system reference structure
LEXMARK INT INC12 citations73
US6429891B1Aug 6, 2002
Printhead mounting apparatus providing adjustment to effect printhead skew correction
LEXMARK INT INC13 citations73
US9851654B2Dec 26, 2017
Automated lens cleaning and shutter system for an electrophotographic imaging device
LEXMARK INT INC5 citations72
US9671750B2Jun 6, 2017
Positional control features for an imaging unit in an electrophotographic image forming device
LEXMARK INT INC2 citations72
US7639965B2Dec 29, 2009
Architecture for an image-forming device
LEXMARK INT INC7 citations72
US5794102AAug 11, 1998
Toner cartridge with heat shield shutter
LEXMARK INT INC12 citations72
US5752135AMay 12, 1998
Door operated charge member positioning
LEXMARK INT INC14 citations72
US7043189B2May 9, 2006
Methods and devices for moving waste toner within an image forming device
LEXMARK INT INC7 citations70
US7853178B2Dec 14, 2010
Methods and devices for selectively driving developer members within an image forming device
LEXMARK INT INC2 citations63
US7890018B2Feb 15, 2011
Architecture for an image-forming device
LEXMARK INT INC3 citations61
USD399249SOct 6, 1998
Toner cartridge for laser printer
LEXMARK INT INC4 citations60
US6535236B1Mar 18, 2003
Referencing mechanism for an imaging apparatus
LEXMARK INT INC4 citations59
US9471027B2Oct 18, 2016
Positional control features between replaceable units of an electrophotographic image forming device
LEXMARK INT INC0 citations51
US6262753B1Jul 17, 2001
Electrophotographic imaging apparatus with reduced packaging size
LEXMARK INT INC1 citations51
US7729649B2Jun 1, 2010
Methods and devices for reducing wear on a print cartridge
LEXMARK INT INC1 citations50
US8374535B2Feb 12, 2013
Pivoting end cap for a fuser module of an image forming device
LEXMARK INT INC0 citations42
US9927763B2Mar 27, 2018
Two door interlock mechanism for an imaging device
LEXMARK INT INC0 citations40
US7693445B2Apr 6, 2010
Cleaner units and methods for removing waste toner within an image forming device
LEXMARK INT INC0 citations40
US7986911B2Jul 26, 2011
Architecture for a media feeding option for an image forming device
LEXMARK INT INC0 citations34
US7734226B2Jun 8, 2010
Lift mechanism for one or more developer members in an image forming device
LEXMARK INT INC0 citations32