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US 8,615,881 B2Granted
Oleophobic ink jet orifice plate
AssigneeXerox Corporation
InventorDavid L. Knierim
Life of this patent
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Abstract
A method for forming a print head having a plurality of reentrant structures to reduce wetting of the print head surface by the ink during use, and a resulting structure. The method can include the use of a single photosensitive layer to form plurality of reentrant structures, each having a pillar and a cap which overhangs the pillar. A plurality of print head nozzles can also be formed during the formation of the reentrant structures. Embodiments can include the formation of pillars, caps, and nozzles using three different masks, two different masks, or a single mask.
Claims17
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.
1 more element
Dependencies are inferred from the claim text.