Liquid ejecting head and method of manufacturing liquid ejecting head
AssigneeCanon Kabushiki Kaisha
InventorsYusuke Hashimoto, Takanobu Manabe, Kenji Fujii
Life of this patent
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Abstract
A liquid ejecting head having high reliability can be manufactured such that the occurrence of cracks in the print element substrate can be suppressed. The supply port of the print element substrate has an opening, the opening width of which at each end portion in the longitudinal direction is narrower than the opening width at the center portion in the longitudinal direction.
Claims12
A liquid ejecting head comprising;
- a substrate including an ejection port array in which multiple ejection ports, each capable of ejecting liquid, are arrayed, and a supply port which communicates with the ejection ports and opens to a back surface of the substrate opposed to a front surface of the substrate on which the ejection ports are located, wherein
- the supply port is arranged along the ejection port array,
- the opening width, in a width direction intersecting a row direction of the ejection port array, of at least one end portion in the row direction of the supply port is narrower than the opening width in the width direction of a center portion in the row direction of the supply port,
- the substrate is formed by joining a first member in which the ejection ports are formed and a second member in which the supply port is formed, and
- the supply port has different opening shapes on a joint surface of the second member to which the first member is joined and on a surface of the second member opposed to the joint surface.
A method of manufacturing a liquid ejecting head comprising a substrate including an ejection port array in which multiple ejection ports, each capable of ejecting liquid are arrayed, and a supply port which communicates with the ejection ports and opens to a back surface of the substrate opposed to a front surface of the substrate on which the ejection ports are located, comprising:
- forming the supply port, the supply port being arranged along the ejection port array, the opening width, in a width direction intersecting a row direction of the ejection port array, of at least one end portion in the row direction of the supply port being narrower than the opening width in the width direction of a center portion in the row direction of the supply port, wherein
- the substrate is formed by joining a first member in which the ejection ports are formed and a second member in which the supply port is formed, and
- the supply port has different opening shapes on a joint surface of the second member to which the first member is joined and on a surface of the second member opposed to the joint surface.
Dependencies are inferred from the claim text.