Ink-jet printing method and apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 13, 2005
Grant Date -
Jul 22, 2004
app pub date -
Jan 8, 2004
filing date -
Jun 7, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Printing is performed on a printing medium by using an ink-jet printhead for discharging ink, multilevel printing is performed by multipass printing operation of executing main scanning operation of moving the printhead relative to the printing medium with respect to each print area while changing the number of ink droplets discharged to each pixel, and the number of scans to be performed to discharge ink droplets used to print a pixel with a low gray level value is made larger than the number of scans to be performed to discharge ink droplets used only to print a pixel with a high gray level value, thereby preventing the occurrence of density irregularity and streaks in a low gray level portion and printing a high-quality image.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully