Inventor
HASELBY ROBERT D
US17 patents
Patents
17 patentsUS6241334B1Jun 5, 2001
Automatic print cartridge alignment sensor system
HEWLETT PACKARD CO89 citations99
US5297017AMar 22, 1994
Print cartridge alignment in paper axis
HEWLETT PACKARD CO129 citations97
US5289208AFeb 22, 1994
Automatic print cartridge alignment sensor system
HEWLETT PACKARD CO107 citations97
US5250956AOct 5, 1993
Print cartridge bidirectional alignment in carriage axis
HEWLETT PACKARD CO132 citations97
US6161914ADec 19, 2000
Alignment sensor system for multiple print cartridges
HEWLETT PACKARD CO44 citations96
US5644344AJul 1, 1997
Optical print cartridge alignment system
HEWLETT PACKARD CO44 citations96
US4922270AMay 1, 1990
Inter pen offset determination and compensation in multi-pen thermal ink jet pen printing systems
HEWLETT PACKARD CO60 citations95
US5488397AJan 30, 1996
Wide-swath printer/plotter using multiple printheads
HEWLETT PACKARD CO85 citations94
US6568782B1May 27, 2003
Calibration system to correct printhead misalignments
HEWLETT PACKARD CO24 citations92
US5109239AApr 28, 1992
Inter pen offset determination and compensation in multi-pen ink jet printing systems
HEWLETT PACKARD CO40 citations92
US5861899AJan 19, 1999
Wide-swath printer/plotter using multiple printheads
HEWLETT PACKARD CO24 citations91
US5991055ANov 23, 1999
Underpulsed scanner with variable scan speed, P. W. M. color balance, scan modes and column reversal
HEWLETT PACKARD CO36 citations90
US4916638AApr 10, 1990
Media advance system for swath printers
HEWLETT PACKARD CO47 citations90
US5517217AMay 14, 1996
Apparatus for enhancing ink-flow reliability in a thermal-inkjet pen; method for priming and using such a pen
HEWLETT PACKARD CO12 citations71
US4567565AJan 28, 1986
Apparatus and method for pen-lift system
HEWLETT PACKARD CO18 citations68
US4163928AAug 7, 1979
Open-loop electric drive with corrective controller
HEWLETT PACKARD CO14 citations65
US4844317AJul 4, 1989
Position transducer for use with a printer or plotter
HEWLETT PACKARD CO3 citations62