Inventor
HUBBLE III FRED F
US52 patents
Patents
50 patentsUS6384918B1May 7, 2002
Spectrophotometer for color printer color control with displacement insensitive optics
XEROX CORP352 citations99
US5526190AJun 11, 1996
Optical element and device for providing uniform irradiance of a surface
XEROX CORP217 citations99
US6639669B2Oct 28, 2003
Diagnostics for color printer on-line spectrophotometer control system
XEROX CORP293 citations98
US6633382B2Oct 14, 2003
Angular, azimuthal and displacement insensitive spectrophotometer for color printer color control systems
XEROX CORP274 citations98
US5997121ADec 7, 1999
Sensing system for detecting presence of an ink container and level of ink therein
XEROX CORP215 citations98
US5627571AMay 6, 1997
Drop sensing and recovery system for an ink jet printer
XEROX CORP117 citations97
US6556932B1Apr 29, 2003
System and method for reconstruction of spectral curves using measurements from a color sensor and a spectral measurement system model
XEROX CORP69 citations96
US6462821B1Oct 8, 2002
Developability sensor with diffuse and specular optics array
XEROX CORP67 citations96
US6409302B2Jun 25, 2002
Sensing system for detecting presence of an ink container and level of ink therein
XEROX CORP61 citations96
US6234603B1May 22, 2001
Sensing system for detecting presence of an ink container and level of ink therein
XEROX CORP55 citations96
US4767172AAug 30, 1988
Collector for an LED array
XEROX CORP324 citations96
US4553033ANov 12, 1985
Infrared reflectance densitometer
XEROX CORP123 citations96
US6603551B2Aug 5, 2003
Color measurement of angularly color variant textiles
XEROX CORP56 citations95
US6115184ASep 5, 2000
Light collector for an LED array
XEROX CORP52 citations95
US5139339AAug 18, 1992
Media discriminating and media presence sensor
XEROX CORP157 citations95
US4989985AFeb 5, 1991
Densitometer for measuring specular reflectivity
XEROX CORP76 citations94
US6650416B2Nov 18, 2003
Color image bar based spectrophotometer photodetector optical orientation
XEROX CORP19 citations93
US6556300B2Apr 29, 2003
Color imager bar based spectrophotometer photodetector optical orientation
XEROX CORP36 citations93
US5394223AFeb 28, 1995
Apparatus for image registration
XEROX CORP47 citations93
US5339150AAug 16, 1994
Mark detection circuit for an electrographic printing machine
XEROX CORP46 citations93
US7259853B2Aug 21, 2007
Systems and methods for augmenting spectral range of an LED spectrophotometer
XEROX CORP29 citations92
US6809855B2Oct 26, 2004
Angular, azimuthal and displacement insensitive spectrophotometer for color printer color control systems
XEROX CORP32 citations92
US6757076B1Jun 29, 2004
Systems and methods for device independent color control to achieve accurate color proofing and reproduction
XEROX CORP29 citations92
US6668155B1Dec 23, 2003
Lead edge paper curl sensor
XEROX CORP46 citations92
US6320182B1Nov 20, 2001
Light collector for an LED array
XEROX CORP59 citations92
US5751443AMay 12, 1998
Adaptive sensor and interface
XEROX CORP34 citations92
US5519497AMay 21, 1996
Control develop mass in a color system
XEROX CORP30 citations92
US5083161AJan 21, 1992
Densitometer for measuring developability
XEROX CORP30 citations92
US5078497AJan 7, 1992
Densitometer for a liquid developer material
XEROX CORP45 citations92
US5337122AAug 9, 1994
Method and apparatus for MICR printing quality control
XEROX CORP32 citations91
US5278587AJan 11, 1994
Method and apparatus for image registration
XEROX CORP22 citations91
US6806717B2Oct 19, 2004
Spacing compensating electrostatic voltmeter
XEROX CORP19 citations84
US5835975ANov 10, 1998
Paper property sensing system
XEROX CORP18 citations84
US6355926B1Mar 12, 2002
Raster output scanner beam steering
XEROX CORP19 citations81
US4670647AJun 2, 1987
Dirt insensitive optical paper path sensor
XEROX CORP21 citations79
US6608643B2Aug 19, 2003
Systems and method for measuring or reducing spacing errors in multiple beam ROS systems
XEROX CORP8 citations74
US5721434AFeb 24, 1998
Digital diagnostic system for optical paper path sensors
XEROX CORP8 citations74
US5272493ADec 21, 1993
Method and apparatus for registration of sequential images in a single pass, multi-LED printbar printer
XEROX CORP14 citations74
US5386123AJan 31, 1995
Beam steering sensor for a raster scanner using a lateral effect detecting device
XEROX CORP5 citations73
US5319537AJun 7, 1994
Raser output scanner color printer with improved start of scan detection and process registration
XEROX CORP18 citations73
US5519230AMay 21, 1996
Belt edge steering sensor
XEROX CORP11 citations72
US5341193AAug 23, 1994
Method and apparatus for sensing magnetic signal strength of xerographically developed toner images for closed loop control of magnetic printing
XEROX CORP14 citations72
US5321434AJun 14, 1994
Digital color printer with improved lateral registration
XEROX CORP13 citations72
US4831410AMay 16, 1989
Automatic exposure control system for flash exposure photocopiers
XEROX CORP8 citations71
US7471385B2Dec 30, 2008
Systems and methods for selecting a reference database for determining a spectrum of an object based on fluorescence of the object
XEROX CORP7 citations70
US4258258AMar 24, 1981
Corona wire mounting device
XEROX CORP16 citations70
US4118751AOct 3, 1978
Coronode connection arrangement
XEROX CORP6 citations70
US4110811AAug 29, 1978
Support structure for a corona generating device
XEROX CORP18 citations70
US5184011AFeb 2, 1993
Linear encoder for digital printing applications
XEROX CORP15 citations69
US5744732AApr 28, 1998
Sheet materials transport system
XEROX CORP5 citations62
Showing the top 50 of 52 patents by PatentIndex Score.