Liquid discharge head
AssigneeCanon Kabushiki Kaisha
InventorKeiichiro Tsukuda
Life of this patent
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Abstract
A liquid discharge head includes a liquid discharge substrate containing an energy generating element and a liquid discharge port, a flow path member of a resinous material fixed to the liquid discharge substrate and having at least a liquid supply path, a sealing material of a resinous material, a concave part, and a support substrate, wherein a distance L1 from a lateral face of the concave part of the flow path member to an end of the support substrate, a distance L2 from the lateral face of the concave part to a lateral face of the liquid discharge substrate, a linear expansion coefficient E1 of the flow path member and a linear expansion coefficient E2 of the sealing material satisfy a relation: L1×E1>L2×E2.
Claims9
A liquid discharge head comprising:
- a liquid discharge substrate including an energy generating element for generating liquid-discharging energy and a liquid discharge port;
- a flow path member of a resinous material fixed to the liquid discharge substrate and having at least a liquid supply path for supplying the liquid discharge substrate with a liquid;
- a sealing material of a resinous material for sealing a periphery of the liquid discharge substrate;
- a concave part formed on the flow path member for accommodating the liquid discharge substrate;
- and
- a support substrate which is adhered and fixed to a bottom face of the concave part, which supports and is adhered to a surface of the liquid discharge substrate at a side opposite to the liquid discharge port and which is prepared with a material having a Young's modulus higher than that of at least the liquid discharge substrate and having a linear expansion coefficient lower than that of the flow path member,
- wherein a distance L1 from a lateral face of the concave part of the flow path member to an end of the support substrate, a distance L2 from the lateral face of the concave part to a lateral face of the liquid discharge substrate, a linear expansion coefficient E1 of the flow path member and a linear expansion coefficient E2 of the sealing material satisfy a relation:
- L1×E1>L2×E2.
Dependencies are inferred from the claim text.