Printhead board, printhead and printing apparatus
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United States of America Patent
Stats
-
Mar 30, 2004
Grant Date -
Dec 19, 2002
app pub date -
Jun 4, 2002
filing date -
Jun 15, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The gate-width ratio between an NMOS transistor (1) and PMOS transistors (2, 3) constructing an initial inverter stage of a voltage converting circuit is set in such a manner that the threshold voltage of the initial inverter becomes a voltage at which an inversion is possible, this voltage being less than one-half the power-supply voltage (VHT) of the voltage converting circuit and, moreover, less than the power-supply voltage (Vdd) of a logic circuit.
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