Raised fluid pass-through structure in print heads

A method of manufacturing a print head, comprising:

• providing a substrate;
• forming a hole in the substrate, the hole configured to accommodate a fluid path;
• forming a raised structure from a portion of the substrate surrounding the hole, the raised structure forming a portion of a fluid path and having only one interface requiring seal against fluid leakage;
• and
• attaching a flex circuit to the substrate, the flex circuit having a hole to accommodate the raised structure and the raised structure positioned to separate the circuit from the fluid path.

A method of manufacturing a print head, comprising:

• providing a substrate;
• forming a hole in the substrate, the hole configured to accommodate a fluid path;
• forming a raised structure from a portion of the substrate surrounding the hole;
• forming a protruding structure on an intermediate layer;
• aligning and mating the protruding structure on the intermediate layer and the raised structure from a portion of the substrate, to form a raised structure, the raised structure forming a portion of a fluid path;
• and
• attaching a flex circuit to the substrate, the flex circuit having a hole to accommodate the raised structure and the raised structure positioned to separate the circuit from the fluid path.