Patent ID: 9682566
Date: 2017-06-20
CPC Classifications: B41J

Claim:
1. A liquid supply unit mountable to and demountable from an attachment structure, the attachment structure including a bottom wall, an end wall arranged to intersect with the bottom wall, a side wall arranged to intersect with the bottom wall and the end wall, the side wall having a groove indented opposite to an upward Z-direction perpendicular to the bottom wall, the groove including a wider top, a narrower bottom, and an inclined wall surface, and the side wall having an inclined surface including a gradually decreasing height from the bottom wall on a side of the end wall, and an electrode assembly provided at a position opposed to the end wall, the liquid supply unit comprising: a first surface member facing the bottom wall, when in an attachment state in which the liquid supply unit is attached to the attachment structure; a second surface member facing the side wall, in the attachment state; a third surface member facing the end wall, in the attachment state; a fourth surface member intersecting the first surface member and the second surface member, and opposed to the third surface member; and inclined surface member extending outward and upward on from the fourth surface; and a contact portion electrically connectable with the electrode assembly, the contact portion provided on the inclined surface member, wherein the second surface member has a first projection, the first projection is configured to be received into the groove in the attachment state, and the second surface member has a second projection located closer to the third surface member than the first projection.