Printhead, head cartridge having the printhead, printing apparatus using the printhead, and printhead element substrate
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United States of America Patent
Stats
-
Jan 22, 2008
Grant Date -
Mar 28, 2002
app pub date -
Jul 12, 2001
filing date -
Jul 13, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a printhead in which a plurality of printing elements arranged in a predetermined direction and a driving circuit for driving the printing elements are formed on a single substrate, the printing elements are classified into a plurality of groups. A selection circuit for selecting a printing element to be driven in each group, and data supply circuits for supplying driving data to the driving circuit for driving each printing element through any of a plurality of paths are arranged on the substrate. This realizes high-speed operation while suppressing increases in wiring length and substrate area even upon an increase in the number of printing elements and reducing the cost and generation of malfunctions.
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