Liquid supply unit having an inclined structure for mounting an electrical contact

摘要

A cartridge 4 has liquid supply ports 407b, 407c, 407y and 407m formed on a bottom wall 422 of a casing 420 and configured to be in contact with corresponding liquid introducing parts 710b, 710c, 710y and 710m of a carriage 8, and a circuit substrate 410 provided on a second wall surface portion 423b of a first end wall 423 intersecting with the bottom wall 422 and configured to be in electrically contact with an electrode assembly 810 of the carriage 8. In a plan view of the bottom wall 422 of the cartridge 4 in a first direction toward the bottom wall 422, the distance between a second end wall 424 and a first wall surface portion 423a of the first end wall 423 is set to be greater than the distance between the second end wall 424 and the second wall surface portion 423b.

主权项

1. A liquid supply unit configured to supply liquid and mountable to a liquid ejection device that includes a first liquid introducing part, a second liquid introducing part, a third liquid introducing part and a fourth liquid introducing part, the liquid supply unit comprising:
a bottom wall comprising a first liquid supply section configured to be in contact with the first liquid introducing part, a second liquid supply section configured to be in contact with the second liquid introducing part, a third liquid supply section configured to be in contact with the third liquid introducing part and a fourth liquid supply section configured to be in contact with the fourth liquid introducing part; a first end wall arranged to intersect with the bottom wall along a first intersection edge, the first end wall having a first end wall surface portion and a second end wall surface portion; a second end wall arranged to intersect with the bottom wall and to be opposed to the first end wall; a mounting structure having an inclined surface extending upward and outward from the second end wall surface portion, away from the location of the second end wall and upward from the location of the bottom wall; and a contact part located on the inclined surface and located and configured to be in electrical contact with the liquid ejection device when the liquid supply unit is mounted to the liquid ejection device, wherein the distance from the second end wall to the first end wall surface portion is greater than the distance from the second end wall to the second end wall surface portion, whereby the first end wall portion surface is offset outwards, with respect to the second end wall surface portion.