Inventor
CHANG JUNHUA
JP20 patents
⚠️ This page may combine multiple inventors who share the name “CHANG JUNHUA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
18 patentsUS6371587B1Apr 16, 2002
Ink jet recording apparatus
SEIKO EPSON CORP53 citations96
US5541628AJul 30, 1996
Ink-jet type recording device
SEIKO EPSON CORP70 citations95
US7140554B2Nov 28, 2006
Liquid ejection head
SEIKO EPSON CORP20 citations92
US6824238B2Nov 30, 2004
Liquid jetting apparatus and method of driving the same
SEIKO EPSON CORP40 citations92
US6494556B1Dec 17, 2002
Liquid jetting apparatus, method of driving the same, and computer-readable record medium storing the method
SEIKO EPSON CORP34 citations92
US6450603B1Sep 17, 2002
Driver for ink jet recording head
SEIKO EPSON CORP47 citations92
US6431675B1Aug 13, 2002
Method of driving an ink jet printhead
SEIKO EPSON CORP25 citations92
US6328398B1Dec 11, 2001
Ink-jet recording head driving method and ink-jet recording device
SEIKO EPSON CORP25 citations92
US6099111AAug 8, 2000
Ink jet recording head
SEIKO EPSON CORP20 citations92
US5453767ASep 26, 1995
Method for forming ink droplets in ink-jet type printer and ink-jet type recording device
SEIKO EPSON CORP26 citations92
US6802589B2Oct 12, 2004
Liquid-jetting apparatus and method of driving the same
SEIKO EPSON CORP17 citations84
US6619777B2Sep 16, 2003
Liquid jet apparatus and method for driving the same
SEIKO EPSON CORP19 citations84
US7073878B2Jul 11, 2006
Liquid ejecting apparatus and controlling unit of liquid ejecting apparatus
SEIKO EPSON CORP14 citations82
US7708388B2May 4, 2010
Liquid ejection head
SEIKO EPSON CORP5 citations73
US6471317B2Oct 29, 2002
Liquid jetting apparatus
SEIKO EPSON CORP9 citations73
US7265481B2Sep 4, 2007
Piezoelectric actuator and fluid ejection head having the same
SEIKO EPSON CORP6 citations63
US8840228B2Sep 23, 2014
Liquid ejection head
SEIKO EPSON CORP0 citations52
US7997693B2Aug 16, 2011
Liquid ejection head
SEIKO EPSON CORP0 citations52