Function liquid filling apparatus, liquid droplet ejection apparatus equipped with the same, method of manufacturing electro-optical device, electro-optical device, and electronic equipment
AssigneeSeiko Epson Corporation
InventorYutaka Takano
Life of this patent
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Abstract
A function liquid filling device includes: a feed unit for feeding a function liquid in a function liquid tank toward head caps coupled to function liquid droplet ejection heads through the function liquid droplet ejection heads; a detection unit for detecting that the fed function liquid reaches the head caps; and a control unit for stopping the drive of the feed unit based on a result of detection by the detection unit. The detection unit includes: a crystal oscillator disposed in the head cap and/or a waste liquid passage; and a detector for detecting the presence or absence of the function liquid based on a change in a resonance frequency of the crystal oscillator.
Claims20
A function liquid filling apparatus which fills a passage inside a function liquid droplet ejection head connected to a function liquid tank with a function liquid in said function liquid tank by coupling a head cap connected to a waste liquid passage to said function liquid droplet ejection head, thereby feeding the function liquid toward said head cap through said function liquid droplet ejection head, said apparatus comprising:
- feed means for feeding the function liquid in the function liquid tank toward said head cap through said function liquid droplet ejection head;
- detection means for detecting a state in that the fed function liquid reaches said head cap;
- and
- control means for stopping drive of said feed means based on a result of detection by said detection means,
- wherein said detection means comprises a crystal oscillator disposed in at least one of inside said head cap and inside said waste liquid passage, and a detector for detecting presence or absence of the function liquid based on a change in a resonance frequency of said crystal oscillator.
A function liquid filling apparatus which fills a plurality of passages inside a plurality of function liquid droplet ejection heads each being respectively connected to a function liquid tank through a plurality of supply passages, with a function liquid in said function liquid tank by coupling a plurality of head caps each being respectively connected to a plurality of waste liquid passages to said function liquid droplet ejection heads, thereby feeding the function liquid toward said plurality of head caps through said plurality of function liquid droplet ejection heads, said apparatus comprising:
- pressurization feed means which is connected to said function liquid tank and which feeds under pressure the function liquid in said function liquid tank;
- a plurality of passage blocking means each being respectively interposed in said plurality of supply passages;
- a plurality of detection means for respectively detecting a state in that the fed function liquid reaches said plurality of head caps;
- and
- control means for causing said passage blocking means corresponding to the head caps to which the function liquid has reached, to perform blocking operation in an order of reaching of the function liquid, based on a result of detection by said plurality of detection means,
- wherein each of said detection means comprises a crystal oscillator disposed in at least one of inside said head cap and inside said waste liquid passage, and a detector for detecting presence or absence of the function liquid based on a change in a resonance frequency of said crystal oscillator.
A function liquid filling apparatus which fills passages in a plurality of function liquid droplet ejection heads connected to a function liquid tank through a plurality of supply passages, with a function liquid in said function liquid tank by coupling a plurality of head caps each being respectively connected to a plurality of waste liquid passages to said function liquid droplet ejection heads and by sucking the function liquid toward said plurality of head caps through said plurality of function liquid droplet ejection heads, said apparatus comprising:
- suction means for sucking the function liquid in said function liquid tank through said waste liquid passages;
- a plurality of passage blocking means each being respectively interposed in said plurality of waste liquid passages;
- a plurality of detection means for detecting a state in that the fed function liquid reaches said plurality of head caps;
- and
- control means for causing said passage blocking means corresponding to the head caps to which the function liquid has reached, to perform blocking operation in an order of reaching of the function liquid, based on a result of detection by said plurality of detection means,
- wherein each of said detection means comprises a crystal oscillator disposed in at least one of inside said head cap and inside said waste liquid passage, and a detector for detecting presence or absence of the function liquid based on a change in a resonance frequency of said crystal oscillator.
Dependencies are inferred from the claim text.