Recording head and recording apparatus using the same

Details Recording head and recording apparatus using the same Recording head and recording apparatus using the same

2007-11-27

2007-11-27

Nguyen, Lam Son (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C347S009000, C347S012000

Reexamination Certificate

active

11146175

ABSTRACT:
A recording head or the like having a voltage generating circuit which does not depend on a voltage fluctuation of a heater driving power source (first power source) is provided. The recording head has: a plurality of heaters connected to a power line VH as a heater driving power source; a power transistor as a switching element for independently driving each heater by supplying a current thereto; and a voltage generating circuit for supplying a voltage for a control signal for controlling the power transistor. The voltage generating circuit has a resistor R1connected to a grounding potential and an n-type MOS transistor T1in which a reference voltage V1which is generated by supplying a constant current from a constant current source I0to the resistor R1is inputted to a gate.

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