Ink-jet printhead board, ink-jet printhead, and ink-jet...

Details Ink-jet printhead board, ink-jet printhead, and ink-jet... Ink-jet printhead board, ink-jet printhead, and ink-jet...

2005-12-06

2005-12-06

Stephens, Juanita D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

06971735

ABSTRACT:
A stable operation is realized without any malfunction of a driver even under a voltage condition that a supplied voltage is 3.3 V or lower. For this purpose, in an ink-jet printhead having an ink orifice for discharging ink, a plurality of heat generation elements for generating heat energy used to discharge ink, and an ink channel which incorporates the heat generation elements and communicates with the ink orifice, a driver for driving the heat generation elements, and a logic circuit for controlling the driver are formed on a single board. The gate oxide film thickness of an enhancement NMOS transistor which forms the driver is larger than that of an enhancement NMOS transistor which forms the logic circuit.

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Device Electronics for Integrated Circuits, 2ndEd., Richard S. Muller, pp. 443-444.

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