Liquid discharge head, liquid discharge device, and liquid discharge apparatus
AssigneeRicoh Company, Ltd.
InventorsToshimichi Odaka, Takahiro Yoshida, Takayuki Nakai
Life of this patent
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Abstract
A liquid discharge head includes a nozzle, an individual liquid chamber, and a circulation channel. The nozzle discharges liquid. The individual liquid chamber is communicated with the nozzle. The circulation channel is communicated with the individual liquid chamber. A first direction in which liquid flows in the individual liquid chamber crosses a second direction in which liquid flows in the circulation channel. A liquid-inflow-side opening of the nozzle faces an area in which a flow of liquid changes from the first direction to the second direction.
Claims13
A liquid discharge head comprising:
- a nozzle to discharge liquid in a discharge direction;
- an individual liquid chamber communicated with the nozzle;
- a nozzle passage to connect the individual liquid chamber to a liquid-inflow-side opening of the nozzle;
- a circulation channel communicated with the individual liquid chamber;
- and
- an interfacial boundary portion disposed between, and to connect, the nozzle passage and the circulation channel, the interfacial boundary portion in its entirety facing the liquid-inflow-side opening of the nozzle,
- wherein a first direction in which liquid flows in the individual liquid chamber in parallel to the discharge direction is perpendicular to a second direction in which the circulation channel extends longitudinally and in which liquid flows in the circulation channel, and
- wherein liquid flow changes from the first direction to the second direction in the interfacial boundary portion facing, in a direction parallel to the discharge direction, the liquid-inflow-side opening of the nozzle.
A liquid discharge head comprising:
- a nozzle to discharge liquid in a discharge direction;
- an individual liquid chamber communicated with the nozzle;
- a nozzle passage connecting the individual liquid chamber to a liquid-inflow-side opening of the nozzle;
- a circulation channel communicated with the nozzle passage;
- and
- an interfacial boundary portion disposed between, and to connect, the nozzle passage and the circulation channel, the interfacial boundary portion in its entirety facing the liquid-inflow-side opening of the nozzle,
- wherein a first direction in which liquid flows in parallel to the discharge direction to the nozzle passage is perpendicular to a second direction in which the circulation channel extends longitudinally and in which liquid flows in the circulation channel,
- wherein liquid flow changes from the first direction to the second direction in the interfacial boundary portion facing, in a direction parallel to the discharge direction, the liquid-inflow-side opening of the nozzle, and
- wherein a portion of the liquid-inflow-side opening of the nozzle opposes the nozzle passage.
Dependencies are inferred from the claim text.