Liquid ejection head
AssigneeCanon Kabushiki Kaisha
InventorKazuhiro YAMADA
Life of this patent
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Abstract
A liquid ejection head includes a plurality of ejection members, each having an ejection port for ejecting liquid, an energy generating element for generating energy to be utilized to eject liquid from the ejection port, a liquid chamber for storing liquid to be supplied to the ejection port and a heater, and a base substrate bearing the plurality of ejection members arranged thereon and having a common flow channel for supplying liquid to the plurality of liquid chambers. The common flow channel communicates with the liquid chambers by way of respective branch ports and each of the branch ports is provided with a notch portion at the upstream side thereof as viewed in the flow direction of liquid flowing through the common flow channel.
Claims18
A liquid ejection head comprising:
- a plurality of ejection members, each having an ejection port for ejecting liquid, an energy generating element for generating energy to be utilized to eject liquid from the ejection port, a liquid chamber for storing liquid to be supplied to the ejection port and a heater;
- and
- a base substrate bearing the plurality of ejection members arranged thereon and having a common flow channel for supplying liquid to the plurality of liquid chambers, wherein
- the common flow channel communicates with the liquid chambers by way of respective branch ports and each of the branch ports is provided with a first notch portion at an upstream side thereof as viewed in the flow direction of liquid flowing through the common flow channel.
A liquid ejection head comprising:
- a plurality of ejection members, each having an ejection port for ejecting liquid, an energy generating element for generating energy to be utilized to eject liquid from the ejection port, a liquid chamber for storing liquid to be supplied to the ejection port and a heater;
- and
- a support member supporting the plurality of ejection members and having a common flow channel for supplying liquid to the plurality of ejection members, wherein
- the common flow channel communicates with the liquid chambers by way of respective openings,
- each of the openings is provided with a notch portion at an upstream side thereof as viewed in the flow direction of liquid flowing through the common flow channel, and
- the upstream side of each of the openings has a profile asymmetric with regard to a straight line passing through the center of gravity of the opening and extending in the flow direction.
A liquid ejection head comprising:
- a plurality of ejection members, each having an ejection port for ejecting liquid and a liquid chamber for storing liquid to be supplied to the ejection port;
- and
- a support member supporting the plurality of ejection members and having a common flow channel for supplying liquid to the plurality of ejection members, wherein
- the common flow channel communicate with the liquid chambers by way of respective openings, and
- each of the openings has an upstream side as viewed in the flow direction of liquid flowing through the common flow channel, the upstream side having a profile asymmetric with regard to a straight line passing through the center of gravity of the opening and extending in the flow direction.
Dependencies are inferred from the claim text.