Patent ID: 6837573

Claim:
A print cartridge comprising: a cartridge body having a lower portion and a vertical wall; a printhead attached to said lower portion; a contact array disposed on said vertical wall and including a first outboard pair of side by side columnar arrays of contact areas having a first outermost columnar array and a first interior columnar array, a second outboard pair of side by side columnar arrays of contact areas having a second outermost columnar array and a second interior columnar array, and an inboard pair of side by side columnar arrays of contact areas having first and second inboard columnar arrays of contact areas, the columnar arrays of each pair diverging from each other in a direction toward said lower portion; said pairs of columnar arrays being side by side, and each pair spanning at least 70% of a height of a region enclosing an area occupied by said contact array; and wherein the first and second outermost columnar arrays each have fewer contact areas than each one of the first and second interior columnar arrays and the first and second inboard columnar arrays.