Inventor

APPEL JAMES J

US44 patents

Patents

44 patents

US5313291AMay 17, 1994

Apparatus for wobble correction using an agile beam polygon ROS and all-spherical optics

XEROX CORP36 citations93

US5311536AMay 10, 1994

Vertically stacked, accurately positioned diode lasers

XEROX CORP41 citations93

US5208456AMay 4, 1993

Apparatus and system for spot position control in an optical output device employing a variable wavelength light source

XEROX CORP33 citations93

US5113202AMay 12, 1992

Electronic single pass, two color printing system

XEROX CORP27 citations93

US5659414AAug 19, 1997

Means for controlling the power output of laser diodes in a ROS system

XEROX CORP43 citations92

US5600126AFeb 4, 1997

Method and apparatus for controlling the power output of multiple laser diodes

XEROX CORP24 citations92

US5548357AAug 20, 1996

Keystoning and focus correction for an overhead projector

XEROX CORP37 citations92

US5489936AFeb 6, 1996

Fast scan spot correction in a polygon ROS using PWM

XEROX CORP21 citations92

US5089908AFeb 18, 1992

Plywood suppression in ROS systems

XEROX CORP32 citations92

US4687317AAug 18, 1987

Document scanning system with selective edit mode

XEROX CORP38 citations92

US5550668AAug 27, 1996

Multispot polygon ROS with maximized line separation depth of focus

XEROX CORP26 citations91

US5539441AJul 23, 1996

Jitter reduction in an overfilled raster output polygon scanner system

XEROX CORP25 citations91

US6144478ANov 7, 2000

Flexible arm piezoelectric lens mover

XEROX CORP7 citations74

US6141031AOct 31, 2000

Aerial color registration

XEROX CORP15 citations74

US6055005AApr 25, 2000

Color printer with jitter signature matching

XEROX CORP10 citations74

US6023286AFeb 8, 2000

Moving mirror motion quality compensation

XEROX CORP9 citations74

US5933182AAug 3, 1999

Single pass color printer with facet matching

XEROX CORP8 citations74

US5517230AMay 14, 1996

Control system for a variable-resolution raster output scanner

XEROX CORP18 citations74

US5461412AOct 24, 1995

Method and apparatus for actively correcting curvature in the scan of an optical output device

XEROX CORP16 citations74

US5377036ADec 27, 1994

Suppression of stray light reflections in a raster output scanner (ROS) using an overfilled polygon design

XEROX CORP14 citations74

US5371526ADec 6, 1994

Raster output scanner for a single pass printing system which separates plural laser beams by wavelength and polarization

XEROX CORP18 citations74

US5341158AAug 23, 1994

Raster output scanner for a xerographic printing system having laser diodes arranged in a line parallel to the fast scan direction

XEROX CORP13 citations74

US5287125AFeb 15, 1994

Raster output scanner with process direction spot position control

XEROX CORP16 citations74

US5270849ADec 14, 1993

Prevention of stray light reflections in a raster output scanner (ROS) using an overfilled polygon design

XEROX CORP9 citations74

US5264869ANov 23, 1993

Electro-optical control apparatus and system for spot position control in an optical output device

XEROX CORP15 citations74

US5212381AMay 18, 1993

Method of controlling slow scan direction of spot position in an optical output device employing an electro-optical control apparatus

XEROX CORP12 citations74

US5204523AApr 20, 1993

Method for spot position control in an optical output device employing a variable wavelength light source and an optical beam deflecting element

XEROX CORP12 citations74

US5153768AOct 6, 1992

Multiple wavelength, multiple diode laser ROS

XEROX CORP8 citations74

US4978185ADec 18, 1990

Raster scanning system utilizing overfilled polygon facet design with non-reflective facet edges

XEROX CORP15 citations74

US4359267ANov 16, 1982

Method of assembling a gradient index lens array

XEROX CORP9 citations74

US5689769ANov 18, 1997

Semi-automatic exit window cleaner

XEROX CORP17 citations73

US5638108AJun 10, 1997

Lower resolution led bars used for 600 SPI printing

XEROX CORP7 citations73

US5081497AJan 14, 1992

Document registration utilizing retractable transparent member beneath platen

XEROX CORP8 citations73

US4396834AAug 2, 1983

Dual reflector illumination system

XEROX CORP16 citations73

US5444239AAug 22, 1995

Fiber optic scanning beam detector

XEROX CORP18 citations72

US5969741AOct 19, 1999

Raster scanner with a selectable spot dimension

XEROX CORP6 citations63

US5381259AJan 10, 1995

Raster output scanner (ROS) using an overfilled polygon design with minimized optical path length

XEROX CORP5 citations63

US6429957B1Aug 6, 2002

Double-pass sagittally offset pre-polygon optics for raster output scanners

XEROX CORP2 citations61

US5729278AMar 17, 1998

Sidewinder raster output scanner

XEROX CORP0 citations45

US6011576AJan 4, 2000

Exposure control for a raster output scanner in a multicolor electrophotographic printer

XEROX CORP0 citations42

APPEL JAMES J

Patents

Method for matching color prints to color images on a monitor screen

Multiple threshold encoding of machine readable code

Thermally stabilized diode laser structure

ROS bow compensation

Apparatus for wobble correction using an agile beam polygon ROS and all-spherical optics

Vertically stacked, accurately positioned diode lasers

Apparatus and system for spot position control in an optical output device employing a variable wavelength light source

Electronic single pass, two color printing system

Means for controlling the power output of laser diodes in a ROS system

Method and apparatus for controlling the power output of multiple laser diodes

Keystoning and focus correction for an overhead projector

Fast scan spot correction in a polygon ROS using PWM

Plywood suppression in ROS systems

Document scanning system with selective edit mode

Multispot polygon ROS with maximized line separation depth of focus

Jitter reduction in an overfilled raster output polygon scanner system

Flexible arm piezoelectric lens mover

Aerial color registration

Color printer with jitter signature matching

Moving mirror motion quality compensation

Single pass color printer with facet matching

Control system for a variable-resolution raster output scanner

Method and apparatus for actively correcting curvature in the scan of an optical output device

Suppression of stray light reflections in a raster output scanner (ROS) using an overfilled polygon design

Raster output scanner for a single pass printing system which separates plural laser beams by wavelength and polarization

Raster output scanner for a xerographic printing system having laser diodes arranged in a line parallel to the fast scan direction

Raster output scanner with process direction spot position control

Prevention of stray light reflections in a raster output scanner (ROS) using an overfilled polygon design

Electro-optical control apparatus and system for spot position control in an optical output device

Method of controlling slow scan direction of spot position in an optical output device employing an electro-optical control apparatus

Method for spot position control in an optical output device employing a variable wavelength light source and an optical beam deflecting element

Multiple wavelength, multiple diode laser ROS

Raster scanning system utilizing overfilled polygon facet design with non-reflective facet edges

Method of assembling a gradient index lens array

Semi-automatic exit window cleaner

Lower resolution led bars used for 600 SPI printing

Document registration utilizing retractable transparent member beneath platen

Dual reflector illumination system

Fiber optic scanning beam detector

Raster scanner with a selectable spot dimension

Raster output scanner (ROS) using an overfilled polygon design with minimized optical path length

Double-pass sagittally offset pre-polygon optics for raster output scanners

Sidewinder raster output scanner

Exposure control for a raster output scanner in a multicolor electrophotographic printer