Liquid ejection head

Details Liquid ejection head Liquid ejection head

2006-06-01

2010-10-19

Do, An H (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07815292

ABSTRACT:
The liquid ejection head includes: a piezoelectric body which generates pressure for ejecting liquid; a spacer member which forms a space allowing the piezoelectric body to be displaced; and an electrical connection member which connects the piezoelectric body with a substrate having a wire, the electrical connection member being provided inside the space, wherein the following formula is satisfied: σmin×L/δLmin≦E≦σmax×L/δLmax, where a range from σminthrough σmaxrepresents a range of a pressing force when the piezoelectric body and the substrate is connected via the electrical connection member, L represents a thickness of the spacer member, a range from δLminthrough δLmaxrepresents a range of an amount of compressive deformation of the spacer member when the pressing force is applied within the range of the pressing force, and E represents a Young's modulus of the spacer member.

REFERENCES:
patent: 5539982 (1996-07-01), Hosono et al.
patent: 6126273 (2000-10-01), Van Vooren et al.
patent: 2003/0206218 (2003-11-01), Miyata et al.
patent: 2005/0023937 (2005-02-01), Sashida et al.
patent: 6-286126 (1994-10-01), None
patent: 2002-46281 (2002-02-01), None

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