Patent ID: 8529033

Claim:
A liquid supply system comprising: a liquid cartridge comprising a liquid chamber configured to store liquid therein; a cartridge mounting portion, wherein the liquid cartridge is configured to be removably mounted to the cartridge mounting portion in a mounting direction; and an urging member positioned in one of the liquid cartridge and the cartridge mounting portion and configured to urge the liquid cartridge in a demounting direction opposite to the mounting direction when the liquid cartridge is positioned in a mounted position in the cartridge mounting portion, wherein the liquid cartridge is configured to supply liquid stored in the liquid chamber to the cartridge mounting portion in the mounted position, wherein the cartridge mounting portion comprises: a bottom plate comprising: a first surface extending from a front end of the first surface to a rear end of the first surface, in a first direction parallel to the demounting direction, wherein the front end of the first surface is positioned more forward than the rear end of the first surface, in the mounting direction, and the first surface is configured to support the liquid cartridge; and a second surface that borders the first surface and extends from the rear end of the first surface in a second direction, wherein an angle formed between the second direction and a downward vertical direction is less than an angle formed between the first direction and the downward vertical direction, and the second surface extends below the first surface.