LIQUID EJECTION HEAD

摘要

A liquid ejection head includes a recording element substrate including an electrode at a first side portion; an electrical wiring substrate having a wire line; a connecting portion connecting the electrode and the wire line; and a sealing material provided between the first side portion of the recording element substrate and the electrical wiring substrate. A first line and a second line are out of alignment in a direction along a side of the recording element substrate. The first line orthogonal to the side passes through a center of gravity of the recording element substrate. A second line passes through a center of a part covered with the sealing material and extends parallel to the first line. Of a part of the sealing material, a first area on the first line side has a larger volume than that of a second area opposite to the first line side.

主权项

1. A liquid ejection head comprising:
a recording element substrate including an electrode at a first side portion; an electrical wiring substrate including an electrode terminal and opposed to the first side portion of the recording element substrate; a connecting member connecting the electrode provided at the first side portion of the recording element substrate and the electrode terminal provided at the electrical wiring substrate; and a sealing member provided between the first side portion of the recording element substrate and the electrical wiring substrate so as to cover the connecting member, wherein a perpendicular and a sealing-member center line are out of alignment in a direction along a side of the recording element substrate adjacent to the first side portion, the perpendicular passing through a center of gravity of the recording element substrate and orthogonal to the side, and the sealing-member center line passing through a center of a part on the side covered with the sealing member in the direction along the side and extending parallel to the perpendicular; and of two areas of a part of the sealing member covering the first side portion of the recording element substrate, the two areas being divided by the sealing-member center line, an area through which the perpendicular passes has a larger volume than that of an area through which the perpendicular does not pass.