Patent ID: 7530661

Claim:
A substrate for a fluid ejection device, the substrate comprising: a first side; a second side opposite the first side; and a fluidic channel communicating with the first side and the second side, wherein a first portion of the fluidic channel extends from the first side toward the second side, a second portion of the fluidic channel extends from the second side toward the first side, and a third portion of the fluidic channel extends from an interface between the first portion and the second portion of the fluidic channel toward the second side, wherein, in a first direction, a dimension of the first portion of the fluidic channel at the first side is greater than a dimension of the second portion of the fluidic channel at the second side, and, in a second direction substantially perpendicular to the first direction, a dimension of the second portion of the fluidic channel at the second side is greater than a dimension of the first portion of the fluidic channel at the first side.