Liquid ejection head and manufacturing method thereof
AssigneeCanon Kabushiki Kaisha
InventorsSouta Takeuchi, Soichiro Nagamochi, Takuya Hatsui
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Abstract
A liquid ejection head including a substrate, an energy generating element provided on the substrate, a film provided on the substrate and the energy generating element, and a flow path forming member provided on the substrate, forming a flow path of a liquid between the flow path forming member and the substrate, and having an ejection orifice at a position faced with the energy generating element, characterized in that the substrate has a supply path of the liquid communicating with the flow path, the flow path forming member has a structure protruding toward the supply path, and a peripheral shape of a distal end portion of the structure is a curved surface shape.
Claims8
A liquid ejection head comprising:
- a substrate;
- an energy generating element provided on the substrate;
- a film provided on the substrate and the energy generating element;
- and
- a flow path forming member provided on the substrate, forming a flow path of a liquid between the flow path forming member and the substrate and having an ejection orifice at a position faced with the energy generating element,
- wherein:
- the substrate has a supply path for a liquid communicating with the flow path;
- the flow path forming member has a structure protruding toward the supply path;
- a peripheral shape of a distal end portion of the structure is a curved surface shape;
- the distal end portion of the structure has a substantially columnar shape;
- and
- a diameter of a section in a surface substantially in parallel with the substrate of the distal end portion of the structure is 3 μm to 20 μm.
A liquid ejection head comprising:
- a substrate;
- an energy generating element provided on the substrate;
- a film provided on the substrate and the energy generating element;
- and
- a flow path forming member provided on the substrate, forming a flow path of a liquid between the flow path forming member and the substrate and having an ejection orifice at a position faced with the energy generating element,
- wherein:
- the substrate has a supply path for a liquid communicating with the flow path;
- the flow path forming member has a structure protruding toward the supply path;
- a peripheral shape of a distal end portion of the structure is a curved surface shape;
- and
- a radius of curvature (R) of the curved surface shape is 1.5 μm or more.
A liquid ejection head comprising:
- a substrate;
- an energy generating element provided on the substrate;
- a film provided on the substrate and the energy generating element;
- and
- a flow path forming member provided on the substrate, forming a flow path of a liquid between the flow path forming member and the substrate and having an ejection orifice at a position faced with the energy generating element,
- wherein:
- the substrate has a supply path for a liquid communicating with the flow path;
- the flow path forming member has a structure protruding toward the supply path;
- a peripheral shape of a distal end portion of the structure is a curved surface shape;
- the flow path forming member has an ejection orifice array made of a plurality of the ejection orifices;
- and
- at least one said structure is disposed per ejection orifice of the ejection orifice array.
Dependencies are inferred from the claim text.