Inventor
CHAN C S
US23 patents
⚠️ This page may combine multiple inventors who share the name “CHAN C S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD CO
22 patentsUS5107332AApr 21, 1992
Method and system for providing closed loop color control between a scanned color image and the output of a color printer
HEWLETT PACKARD CO155 citations99
US4831389AMay 16, 1989
Off board ink supply system and process for operating an ink jet printer
HEWLETT PACKARD CO158 citations99
US4999652AMar 12, 1991
Ink supply apparatus for rapidly coupling and decoupling a remote ink source to a disposable ink jet pen
HEWLETT PACKARD CO126 citations98
US4812859AMar 14, 1989
Multi-chamber ink jet recording head for color use
HEWLETT PACKARD CO172 citations98
US5016023AMay 14, 1991
Large expandable array thermal ink jet pen and method of manufacturing same
HEWLETT PACKARD CO304 citations97
US5111302AMay 5, 1992
Method and system for enhancing the quality of both color and black and white images produced by ink jet and electrophotographic printers
HEWLETT PACKARD CO82 citations96
US5031050AJul 9, 1991
Method and system for reproducing monochromatic and color images using ordered dither and error diffusion
HEWLETT PACKARD CO89 citations96
US4930018AMay 29, 1990
Method and system for enhancing the quality of both color and black and white images produced by ink jet printers
HEWLETT PACKARD CO69 citations96
US4791438ADec 13, 1988
Balanced capillary ink jet pen for ink jet printing systems
HEWLETT PACKARD CO103 citations95
US4716423ADec 29, 1987
Barrier layer and orifice plate for thermal ink jet print head assembly and method of manufacture
HEWLETT PACKARD CO70 citations95
US4694308ASep 15, 1987
Barrier layer and orifice plate for thermal ink jet printhead assembly
HEWLETT PACKARD CO65 citations95
US5420675AMay 30, 1995
Liquid toner fusing/transfer system with a film-forming roller that is absorbent of a low volatility liquid toner carrier
HEWLETT PACKARD CO39 citations92
US5140432AAug 18, 1992
Method and system for printing in one or more color planes with improved control of error diffusion
HEWLETT PACKARD CO39 citations92
US5113199AMay 12, 1992
Ink delivery system for ink jet printers
HEWLETT PACKARD CO40 citations92
US4791436ADec 13, 1988
Nozzle plate geometry for ink jet pens and method of manufacture
HEWLETT PACKARD CO29 citations92
US4535343AAug 13, 1985
Thermal ink jet printhead with self-passivating elements
HEWLETT PACKARD CO109 citations92
US5121132AJun 9, 1992
Ink delivery system for printers
HEWLETT PACKARD CO39 citations91
US4829319AMay 9, 1989
Plastic orifice plate for an ink jet printhead and method of manufacture
HEWLETT PACKARD CO38 citations90
US4675083AJun 23, 1987
Compound bore nozzle for ink jet printhead and method of manufacture
HEWLETT PACKARD CO36 citations90
US6057867AMay 2, 2000
Laser printer with piezoelectric apparatus to reduce banding by adjustment of a scanned laser beam
HEWLETT PACKARD CO18 citations84
US6561628B1May 13, 2003
Toner projection system
HEWLETT PACKARD CO9 citations73
US5796422AAug 18, 1998
Direct toner projection printing using an intermediate transfer medium
HEWLETT PACKARD CO11 citations73