Ink jet print head and ink jet printing apparatus
AssigneeCanon Kabushiki Kaisha
InventorYasuyuki Tamura
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Abstract
The ink jet print head according to this invention comprises: a plurality of nozzles; a plurality of electrothermal transducers provided one for each of the plurality of nozzles, the electrothermal transducers being adapted to eject ink supplied into the nozzles when energized; an energization start means to start energizing the electrothermal transducers; a voltage detection means to detect a voltage applied to the electrothermal transducers after starting the energization; and an energization stop means to stop the energization of the electrothermal transducers according to the voltage detected by the voltage detection means.
Claims13
An ink jet print head comprising:
- a plurality of nozzles each having an electrothermal transducer to eject ink supplied into the nozzles when energized;
- energization start means for start energizing said electrothermal transducers;
- voltage detection means for detecting a voltage applied after starting the energization to said electrothermal transducers;
- and
- energization stop means for stopping said energization of said electrothermal transducers according to said voltage detected by said voltage detection means.
An ink jet printing apparatus having an ink jet print head, said ink jet print head being adapted to print on a predetermined print medium by ejecting ink from a plurality of nozzles, said ink jet print head comprising:
- a plurality of nozzles each having an electrothermal transducer to eject ink supplied into said nozzles when energized;
- energization start means for starting energizing said electrothermal transducers;
- voltage detection means for detecting a voltage applied after starting said energization to said electrothermal transducers;
- and
- energization stopping means for stopping said energization of said electrothermal transducers according to said voltage detected by said voltage detection means.
An ink jet printing method for performing printing by ejecting ink, comprising said steps of:
- starting energizing electrothermal transducers which generate thermal energy for ejecting ink;
- detecting a voltage applied after said start of the energization to said electrothermal transducers;
- and
- stopping said energization of said electrothermal transducers according to said voltage detected.
Dependencies are inferred from the claim text.