Patent ID: 8376536

Claim:
A liquid cartridge urging unit for a mounting portion to which a liquid cartridge is configured to be mounted by being moved in a first direction, comprising: a frame comprising: two side portions extending in the first direction, wherein each of the two side portions comprises a first end in the first direction; a connecting portion connecting the first ends of the two side portions; and at least one guide bar extending from the connecting portion in a second direction opposite to the first direction and positioned between the two side portions, such that the two side portions and the at least one guide bar are arranged in a third direction perpendicular to the first direction and the second direction; two or more sliders, each of which is positioned between one of the two side portions and one of the at least one guide bar which is positioned adjacent to the one of the two side portions or between two of the at least one guide bar positioned adjacent to each other, wherein each of the two or more sliders is configured to contact the liquid container positioned in the mounting portion and configured to be guided by the at least one guide bar, such that each of the two or more sliders moves between a release position and a mount position, wherein the mount position is away from the release position in the first direction; two or more urging members configured to urge the two or more sliders in the second direction, respectively; and at least one stopper disposed at the at least one guide bar and configured to contact the two or more sliders to restrict a movement of the two or more sliders in the second direction, such that the two or more sliders do not move beyond the release position, wherein each of the two or more sliders and the at least one guide bar comprises an engagement portion configured to restrict movements of one of the two or more sliders and a corresponding one of the at least one guide bar separating from each other in the third direction, and wherein the engagement portion of the slider comprises a first lip extending in a fourth direction perpendicular to the first direction, the second direction, and the third direction, and the engagement portion of the guide bar comprises a second lip extending in a fifth direction opposite to the fourth direction, where the first lip and the second lip are overlapped in the third direction.