Patent ID: 8292408

Claim:
An inkjet printhead comprising: a substrate having an ink feed slot formed in the substrate and having a first longitudinal edge and a second longitudinal edge opposite to said first longitudinal edge, the first longitudinal edge extending along a first longitudinal axis (X); a first row of vaporization chambers arranged along said first longitudinal edge and a second row of vaporization chambers arranged along the second longitudinal edge, in which each chamber comprises an ink droplet generating portion and a connection portion, said connection portion including at least one duct in fluid connection with said ink feed slot, wherein the connection portions of the chambers of the first row overlap along said first longitudinal axis (X) with the connection portions of the chambers of the second row; wherein each of said ducts has a first end in fluid connection with said ink feed slot and a second end connected with only one of said chambers, and each of said ducts extends between said ink feed slot and said chamber along a substantially rectilinear direction; wherein each of said ducts has a first lateral side extending substantially parallel to said first longitudinal axis (X) and a second lateral side extending substantially parallel to a second longitudinal axis (Y) that extends from the ink droplet generating portion to the connection portion of at least one of said chambers; wherein the second lateral side of each duct defines a length that varies along the first and second rows based on the distance of the respective ink generating portion along the second direction (Y) from the respective first longitudinal edge or second longitudinal edge of the ink feed slot.