| 摘要 |
Thermal ink jet apparatus includes an ink jet pen with a plurality of ink ejection nozzles. Associated with each nozzle is a first resistor and second resistor. A feed channel introduces a quantum of ink into thermal communication with each first resistor and second resistor. The quantum of ink requires a level of applied thermal energy of Emin to be caused to be ejected from the associated nozzle. An X-Y matrix drive circuit selectively applies a half-select address current to a first resistor and a half-select address current to a second resistor, both resistors located at a common nozzle. Each half-select current is insufficient to cause a resistor to emit Emin thermal energy, but both half-select currents cause the first and second resistors to couple at least Emin of thermal energy to the co-located quantum of ink so as to enable an ejection thereof.
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