Patent ID: 6976752

Claim:
A printhead for an ink jet printer responsive to control and data signals, comprising: a plurality of ink ejectors for ejecting ink when actuated; a power circuit for selectively applying power to ink ejectors to actuate the ink ejectors and eject the ink; a control circuit responsive to the data signals for producing control signals for controlling the operation of the power circuit to actuate the selected ejectors based on the data signals; the power circuit having a total resistance and including a compensation circuit having a sub-total resistance included in the total resistance and being controlled by the control circuit for reducing the total resistance of the power circuit in response to the control signals, the compensation circuit having first and second parallel resistance paths and being responsive to the control signals to connect either the first resistance path or both the first and second resistance path to carry power in the power circuit, whereby the sub-total resistance of the compensation circuit is reduced when both the first and second resistance paths are connected to carry power.