Patent ID: 7165829

Claim:
A liquid container detachably mountable to a container holder, said liquid container comprising: a container body for containing liquid and including a front side engaging portion and a rear side engaging portion for engagement with the container holder, said front side engaging portion and said rear side engaging portion being disposed at a leading side and a trailing side, respectively, with respect to an insertion direction of said container into the container holder, wherein said leading side and said trailing side are connected by a pair of lateral sides which extend in parallel with the insertion direction; and a projection, provided on only one lateral side of said pair of lateral sides of said container body, for being guided, when said container is mounted to the container holder, along an upper end of a guide wall provided in the container holder while the other lateral side is limited by an inner surface of the container holder, and said container is rotated substantially about said front side engaging portion, wherein a bottom surface of said container is provided with a liquid supply outlet for supplying the liquid from said container to an outside thereof; and wherein said liquid supply outlet is disposed at a position downstream in the insertion direction of a middle point of said container, the position being offset toward said one of the lateral sides having said projection.