Ink-jet printhead, printing apparatus having said printhead, and method of driving said printhead
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 21, 2003
Grant Date -
Dec 6, 2001
app pub date -
Mar 28, 2001
filing date -
Mar 28, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
When driving an ink-jet printhead equipped with a matrix-type circuit having a substrate, a plurality of scanning signal lines and a plurality of information signal lines on the substrate and heating elements provided on the substrate at points of intersection between the scanning and information signal lines, scanning signals (V.sub.y1 to V.sub.y3) having a first potential (1/2.multidot.V.sub.0) are supplied sequentially to the scanning signal lines by a first driving circuit, select signals (V.sub.x1 to V.sub.x4) having a second potential (-1/2.multidot.V.sub.0) are supplied to the information signal lines by a second driving circuit in accordance with print data, and each of the scanning and select signals is provided with a first interval (t1) having first and second potentials and with a second interval (t2) over which the potential difference is zero, whereby accumulation of heat at unselected points is prevented to suppress crosstalk.
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