Liquid ejection device and short-circuit detection method
AssigneeFUJIFILM Corporation
InventorTadashi Kyoso
Life of this patent
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Abstract
A liquid ejection device includes a head driving unit that generates a first driving voltage and a second driving voltage in which whether or not there is ejection of liquid from a first ejection element in a case where the first driving voltage alone is applied to the first ejection element that is a detection target of a short circuit between ejection elements is different from whether or not there is ejection of liquid from the first ejection element in a case where the first driving voltage and the second driving voltage are applied to the first ejection element, supplies the first driving voltage to the first ejection element, and supplies the second driving voltage to the second ejection element suspected of a short circuit with the first ejection element.
Claims11
A liquid ejection device, comprising:
- a liquid ejection head including a plurality of ejection elements;
- a driving voltage generation unit that generates a first driving voltage that is used at the time of detection of a short circuit of the plurality of ejection elements and a second driving voltage that is used at the time of detection of a short circuit of the plurality of ejection elements;
- and
- a driving voltage supply unit that supplies the first driving voltage to the first ejection element that is a detection target of a short circuit between ejection elements, and supplies the second driving voltage to the second ejection element that is suspected of the short circuit with the first ejection element,
- wherein the driving voltage generation unit generates the first driving voltage and the second driving voltage in which whether or not there is ejection of liquid from the first ejection element in a case where the first driving voltage alone is applied to the first ejection element is different from whether or not there is ejection of liquid from the first ejection element in a case where the first driving voltage and the second driving voltage are applied to the first ejection element.
A short-circuit detection method of detecting a short circuit between ejection elements in a liquid ejection head including a plurality of ejection elements, the method comprising:
- a driving voltage generation step of generating a first driving voltage that is used at the time of detection of a short circuit of the plurality of ejection elements and a second driving voltage that is used at the time of detection of a short circuit of the plurality of ejection elements;
- a driving voltage supply step of supplying the first driving voltage to the first ejection element that is a detection target of a short circuit between ejection elements, and supplies the second driving voltage to the second ejection element that is suspected of the short circuit with the first ejection element;
- and
- a detection step of detecting whether or not there is a short circuit between the first ejection element and the second ejection element on the basis of whether or not there is ejection of the first ejection element,
- wherein the driving voltage generation step includes generating the first driving voltage and the second driving voltage in which whether or not there is ejection of liquid from the first ejection element in a case where the first driving voltage alone is applied to the first ejection element is different from whether or not there is ejection of liquid from the first ejection element in a case where the first driving voltage and the second driving voltage are applied to the first ejection element.
Dependencies are inferred from the claim text.