Patent ID: 9233547
Filing Date: 2016-01-12
CPC Classification: B41J

Claim Text:
1. A liquid supply unit mountable to and demountable from an attachment structure comprising a bottom wall, a side wall arranged to intersect with the bottom wall, an end wall arranged to intersect with the bottom wall and the side wall and an electrode assembly provided at a position opposed to the end wall, the liquid supply unit comprising: a first surface member; a second surface member; a third surface member; and a contact portion, wherein in an attachment state in which the liquid supply unit is attached to the attachment structure, the first surface member faces the bottom wall, the second surface member faces the side wall, the third surface member faces the end wall, and the contact portion is electrically connectable with the electrode assembly, wherein the second surface member has a restriction portion configured to restrict a distance of friction of the contact portion against the electrode assembly in the course of attachment of the liquid supply unit to the attachment state wherein the restriction portion is a first convex protruding outward from the second surface member, and the first convex is arranged to come into contact with a wall surface part of the side wall which is extended in a direction of intersecting with the first surface member and the second surface member in the attachment state and thereby restrict a change in attitude of the liquid supply unit against the attachment structure,