Patent ID: 7703899

Claim:
An ink-jet head comprising: a flexible tube; a passage component; a tubular joint that protrudes from a surface of the passage component and is fitted into the tube; and a cap that covers a portion of the tube fined with the joint, wherein: a hole is formed on the surface of the passage component; the cap includes a tubular portion that has an inner surface to contact with an outer surface of the portion of the tube fitted with the joint and has such an inside diameter as to allow the tube to pass therethrough, a protrusion that protrudes inward from the inner surface of the tubular portion such that the protrusion engages with a recess on the outer surface of the tube, and an extending portion that extends toward the hole from an end of the tubular portion confronting the surface of the passage component; an end of the protrusion is positioned between an inside diameter position and an outside diameter position of the portion of the tube fitted with the joint; and a hook engageable with a peripheral edge of the hole is formed at the extending portion.