Head board, liquid discharge head, and liquid discharge apparatus
AssigneeCanon Kabushiki Kaisha
InventorsSeiko Minami, Nobuyuki Hirayama
Life of this patent
Estimating the term…
Abstract
A head board includes at least one orifice configured to discharge a liquid, a plurality of electrothermal transducers configured to generate heat to discharge the liquid from the orifice, a sensor element configured to detect a state of discharge of the liquid from the orifice, and a delay circuit configured to delay an output timing of a signal. The plurality of electrothermal transducers and the sensor element are driven by a common drive signal, when driving the plurality of electrothermal transducers, the drive signal is input to the plurality of electrothermal transducers via the delay circuit, and when driving the sensor element, the drive signal is input to the sensor element without passing through the delay circuit.
Claims11
A head board comprising:
- at least one orifice configured to discharge a liquid;
- a plurality of electrothermal transducers configured to generate heat to discharge the liquid from the at least one orifice;
- a sensor element configured to detect a state of discharge of the liquid from the at least one orifice;
- and
- a delay circuit configured to delay an output timing of a signal,
- wherein the plurality of electrothermal transducers and the sensor element are driven by a common drive signal,
- when driving the plurality of electrothermal transducers, the drive signal is input to the plurality of electrothermal transducers via the delay circuit, and
- when driving the sensor element, the drive signal is input to the sensor element without passing through the delay circuit.
Dependencies are inferred from the claim text.