Liquid ejection head and liquid ejection apparatus
AssigneeCanon Kabushiki Kaisha
InventorTakuma Kodoi
Life of this patent
Estimating the term…
Abstract
A liquid ejection head includes a print element substrate having an ejection surface on which a plurality of ejection ports corresponding to print elements for ejecting liquid are formed and a plurality of ejection port arrays formed of a plurality of the ejection ports are formed and a protective member having a plurality of openings and placed on the print element substrate so that the plurality of openings and the plurality of ejection port arrays are aligned so as to correspond to each other, and one or more print element number identifiers for identifying one or more print element numbers assigned to the print elements are at one or more locations above the ejection port arrays and near at least one of the plurality of openings on the protective member.
Claims15
A liquid ejection head comprising:
- a print element substrate having an ejection surface on which a plurality of ejection ports corresponding to print elements for ejecting liquid are formed and a plurality of ejection port arrays each formed of a portion of the plurality of the ejection ports are formed;
- and
- a protective member having a plurality of openings and placed on the print element substrate so that the plurality of openings and the plurality of ejection port arrays are aligned so as to correspond to each other,
- wherein one or more print element number identifiers for identifying one or more print element numbers assigned to the print elements are at one or more locations above the ejection port arrays and near at least one of the plurality of openings on the protective member, and
- the one or more print element number identifiers on the protective member are located at the one or more locations between the ejection port arrays or between a transverse end of the protective member and one of ejection port arrays.
A liquid ejection head, comprising:
- a print element substrate having an ejection surface on which a plurality of ejection ports corresponding to print elements for ejecting liquid are formed and a plurality of ejection port arrays each formed of a portion of the plurality of the ejection ports are formed;
- and
- a protective member having a plurality of openings and placed on the print element substrate so that the plurality of openings and the plurality of ejection port arrays are aligned so as to correspond to each other,
- wherein one or more print element number identifiers for identifying one or more print element numbers assigned to the print elements are at one or more locations above the ejection port arrays and near at least one of the plurality of openings on the protective member, and
- the one or more print element number identifiers are through-holes penetrating a lower layer surface from an upper layer surface of the protective member.
A liquid ejection apparatus comprising:
- a print element substrate having an ejection surface on which a plurality of ejection port arrays for ejecting liquid are formed;
- and
- a protective member having a plurality of openings and placed on the print element substrate so that the plurality of openings and the plurality of ejection port arrays are aligned so as to correspond to each other,
- wherein one or more print element number identifiers for identifying one or more print element numbers are at one or more locations above the ejection port arrays and near at least one of the plurality of openings on the protective member, and
- the one or more print element number identifiers on the protective member are located at the one or more locations between the ejection port arrays or between a transverse end of the protective member and one of ejection port arrays.
Dependencies are inferred from the claim text.