Patent ID: 8615881

Claim:
A method for forming an ink jet print head, comprising: exposing a photosensitive layer to a first patterned light source to define a plurality of reentrant structure pillars, wherein unexposed portions of the photosensitive layer remain unexposed to the first light source during definition of the plurality of reentrant structure pillars; exposing the photosensitive layer to a second patterned light source to define a plurality of reentrant structure caps for the plurality of reentrant structures, wherein unexposed portions of the photosensitive layer remain unexposed to the second light source during definition of the plurality of reentrant structure caps; and after exposing the photosensitive layer to define the plurality of reentrant structure pillars and the plurality of reentrant structure caps, removing the unexposed portions of the photosensitive layer to form the plurality of reentrant structures.