Patent ID: 8172381

Claim:
An ink tank with features spaced apart by distances ensuring interface with a printhead and carrier support structure of an inkjet printing system, comprising: a reservoir body with a length, a width and a height and having opposite front and rear walls, right and left walls and a bottom wall connected together at respective right and left front and rear corners, right and left bottom corners, front and rear bottom corners, and a top rim on the walls defining a top opening on said reservoir body; a top cover attached on said reservoir body so as to substantially close said top opening of said reservoir body for containing a supply of ink within at least one interior chamber of said ink tank; a protrusion on said front wall having an upper edge disposed adjacent to said top rim and defining a lip on said protrusion adapted to engage a latch on a printhead, the lip enabling seating of said reservoir body therein; a pair of protuberances on said rear wall laterally spaced apart and disposed adjacent to and above said rear bottom corner and diagonally across said reservoir body from said lip on said protrusion on said front wall, said protuberances adapted to insert into a slot in the printhead, the protuberances for enabling seating and releasable locking of said reservoir body therein; a lower central recessed cavity formed in said reservoir body extending from and open at said rear and bottom walls and located between said protuberances for enabling inserting and seating of said reservoir body in the carrier support structure; and at least one snout on said bottom wall disposed closer to said front wall than to said rear wall and adapted to be in fluid communication with an orifice in a printhead as said reservoir body is pivotally inserted and seated in the carrier support structure; wherein a furthermost point of said each protuberance is displaced from a furthermost point of said lip by a distance of no more than 78.0 mm, as measured along an axis extending substantially parallel to the length of said reservoir body; said each protuberance having a height extending above an outer surface of said bottom wall within a range of from approximately 0.3 mm to 4.6 mm, as measured along an axis extending substantially parallel to the height of said reservoir body; said snout having a central axis displaced from said lip of said protrusion by a distance within a range of from approximately 18.1 mm to 19.1 mm, as measured along an axis extending substantially parallel to the length of said reservoir body; said snout having a height extending below said outer surface of said bottom wall within a range of from approximately 1.2 mm to 3.8 mm, as measured along an axis extending substantially parallel to the height of said reservoir body.