Liquid ejection head and manufacturing method of liquid ejection head
AssigneeCanon Kabushiki Kaisha
InventorsKiyomitsu KUDO, Satoshi Kimura, Tomotsugu Kuroda, Naoko Tsujiuchi
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Abstract
A liquid ejection head with high environmental reliability which suppresses a crack of a Si substrate and peeling-off of an ejection port forming member by relaxing a residual stress in a printing element substrate and a manufacturing method of a liquid ejection head are provided. For that purpose, after the printing element substrate is bonded and fixed to a support member, the support member is screwed and fixed through an elastic member.
Claims20
A liquid ejection head, comprising:
- a printing element unit including
- a printing element substrate having an ejection port forming member configured to form an ejection port capable of ejecting a liquid and a substrate supporting the ejection port forming member, and
- a plate-shaped support member configured to support the printing element substrate and having a supply port capable of supplying the liquid to the printing element substrate;
- and
- a channel unit in which a channel for leading the liquid to the supply port of the support member is formed, wherein
- the support member is formed of a resin and includes a pressing unit configured to press so that a center part on a surface opposite to a surface on which the printing element substrate of the printing element unit is mounted becomes convex.
A manufacturing method of a liquid ejection head for manufacturing a liquid ejection head by using:
- a printing element substrate having an ejection port forming member configured to form an ejection port capable of ejecting a liquid and a substrate supporting the ejection port forming member, and
- a support member configured to support the printing element substrate and having a supply port capable of supplying the liquid to the printing element substrate;
- and
- a channel unit in which a channel for leading the liquid to the supply port of the support member is formed, the method comprising the steps of:
- forming the support member by a resin;
- and
- pressing a surface opposite to a surface on which the printing element substrate of the printing element unit is mounted.
A liquid ejection head, comprising:
- a printing element substrate including an ejection port ejecting a liquid;
- a plate-shaped first support member formed of a resin, configured to support the printing element substrate and including a supply port for supplying the liquid to the printing element substrate;
- and
- a second support member configured to support the first support member and formed with a channel for supplying the liquid to the first support member, wherein
- the first support member and the second support member are joined by a screw, and a thin portion having a thickness smaller than the thickness of the first support member of a portion where the printing element substrate is disposed is provided between a portion where the screw is disposed and the portion where the printing element substrate is disposed in the first support member.
Dependencies are inferred from the claim text.