Liquid ejection head and process for producing the same
AssigneeCanon Kabushiki Kaisha
InventorsMasako Shimomura, Hiromichi Noguchi
Life of this patent
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Abstract
An aspect of the present invention is a process for producing a liquid ejection head including an ejection orifice member provided with ejection orifices for ejecting liquid. The process includes supplying to a surface of a base material for forming the ejection orifice member a mixture of a first composite for imparting a hydrophobic characteristic to the surface and a second composite being able to exhibit a hydrophilic characteristic by being irradiated with light; imparting a hydrophobic characteristic to the entire or a part of the surface by utilizing the first composite; and then irradiating the second composite with light in a partial region of the surface for imparting a hydrophilic characteristic to the region irradiated with the light.
Claims7
A process for producing a liquid ejection head having an ejection orifice member provided with ejection orifices for ejecting liquid, the process comprising:
- supplying to a surface of a base material for forming the ejection orifice member a mixture of a first composite for imparting a hydrophobic characteristic to the surface and a second composite being able to exhibit a hydrophilic characteristic by being irradiated with light;
- imparting a hydrophobic characteristic to the surface by utilizing the first composite;
- and
- irradiating the second composite with light in a region of the surface provided with the hydrophobic characteristic for imparting a hydrophilic characteristic to the region irradiated with the light.
A liquid ejection head comprising:
- an ejection orifice member provided with ejection orifices for ejecting liquid, wherein
- a face in which the ejection orifices of the ejection orifice member are opened includes a portion where Si atoms binding to groups having fluorine atoms form a siloxane bond via an oxygen atom and a portion where Ti atoms binding to hydroxyl groups bind to each other via an oxygen atom.
Dependencies are inferred from the claim text.