Liquid channel structure and liquid-droplet jetting apparatus
AssigneeBrother Kogyo Kabushiki Kaisha
InventorHiroto Sugahara
Life of this patent
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Abstract
An ink channel in a channel unit includes a pressure chamber and a throttle channel in which ink flows along different planes and a communication hole which communicates the pressure chamber and the throttle channel. A center line of the communication hole deviates from a center line of the pressure chamber in a width direction of the pressure chamber, and also deviates from a center line of the throttle channel in a width direction of the throttle channel. Consequently, a swirling flow is generated in connection portions at which the pressure chamber and the throttle channel are connected to the communication hole, thereby effectively preventing bubbles from staying.
Claims16
A liquid channel structure, comprising:
- a first channel which extends along a first plane and in which liquid flows;
- a second channel which extends along a second plane different from the first plane and in which the liquid flows;
- and
- a communication channel which communicates the first channel at an end portion thereof and the second channel at an end portion thereof;
- wherein a center line of the communication channel deviates from a center line of at least one of the first and second channels in a width direction of one of the first and second channels;
- and
- a channel area of the communication channel is larger than a channel area of the first channel at the end portion thereof and a channel area of the second channel at the end portion thereof.
A liquid-droplet jetting apparatus which jets a liquid droplet of a liquid from a nozzle, comprising:
- a channel unit which has a liquid channel communicating with the nozzle;
- and
- a jetting pressure applying mechanism which applies a jetting pressure to the liquid in the liquid channel,
- wherein the liquid channel includes a first channel which extends along a first plane and in which the liquid flows, a second channel which extends along a second plane different from the first plane and in which the liquid flows, and a communication channel which communicates the first channel at an end portion thereof and the second channel at an end portion thereof;
- a center line of the communication channel deviates from a center line of at least one of the first and second channels in a width direction of one of the first and second channels;
- and
- a channel area of the communication channel is larger than a channel area of the first channel at the end portion thereof and a channel area of the second channel at the end portion thereof.
Dependencies are inferred from the claim text.