Thermal ink jet printer having printhead transducers with multilevelinterconnections
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United States of America Patent
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Dec 12, 1989
Grant Date -
N/A
app pub date -
Nov 25, 1988
filing date -
Nov 25, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A thermal ink jet printer utilizes a printhead whose electrical connections to the heating elements used to expel the ink droplets has been modified to reduce the effects of parasitic resistance of the common return when a number of resistors are simultaneously addressed. The common return, formed in the same substrate level as the resistor elements, has been modified by forming and interconnecting a second common return. The resistor is connected to an input source by a low resistance connection which is formed to cross-over, or under, the second common.
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