Patent ID: 9233546
Filing Date: 2016-01-12
CPC Classification: B41J

Claim Text:
1. A liquid supply unit configured to be mounted to a liquid ejection device, the liquid ejection device including a head unit and a carriage unit, the head unit including a liquid introducing part and two first engagement protrusions for positioning the liquid supply unit, the carriage unit including an electrode and two second engagement protrusions for positioning the liquid supply unit, the liquid supply unit configured to be placed between the two first engagement protrusions and between the two second engagement protrusions, the liquid supply unit comprising: a bottom wall located on a bottom when the liquid supply unit is mounted to the liquid ejection device; an upper wall opposed to the bottom wall; a first side wall arranged to intersect with the bottom wall and the upper wall; a second side wall arranged to intersect with the bottom wall and the upper wall and opposed to the first side wall; a first end wall arranged to intersect with the bottom wall, the upper wall, the first side wall and the second side wall; a second end wall arranged to intersect with the bottom wall, the upper wall, the first side wall and the second side wall and opposed to the first end wall; a contact portion provided on the second end wall and configured to be electrically connected with the electrode; and a liquid retaining member placed in a space surrounded by the bottom wall, the upper wall, the first side wall, the second side wall, the first end wall and the second end wall, wherein the first side wall includes a first part and a second part aligned in a first direction from the first end wall toward the second end wall, the first part of the first side wall has an outer surface comprising: the second part of the first side wall is arranged to be inclined with respect to the bottom wall.