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US 8,262,204 B2Granted
Print head die slot ribs
AssigneeHewlett-Packard Development Company, L.P.
InventorsDavid M. Braun, Siddhartha Bhowmik, Swaroop K. Kommera, Richard J. Oram, Phillip G. Rourke, Joshua W. Smith, Christopher C. Aschoff
Life of this patent
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Abstract
Methods and an apparatus are disclosed, wherein a print head die includes a slot and ribs across the slot. The ribs are recessed from one or both sides of the die.
Claims22
An apparatus comprising:
- a print head die having a first side configured to face a fluid reservoir and a second opposite side opposite the first side, the die comprising:
- a fluid feed slot through the die;
- and
- ribs extending across the slot, wherein the ribs are recessed from the first side and the second side of the die, wherein the slot is between and bordered by two opposing side surfaces, wherein each of the ribs has a top surface and a bottom surface, the top surface being spaced below a top of the two opposing side surfaces and the bottom surface being spaced above a bottom of the two opposing side surfaces.
1 more element
A method comprising:
- forming a slot in a die, wherein forming the slot comprises etching through the die to form the slot;
- forming ribs across the slot, wherein the ribs are recessed from at least one side of the die, wherein the slot is between and bordered by two opposing side surfaces, wherein each of the ribs has a top surface and a bottom surface, the top surface being spaced below a top of the two opposing side surfaces and the bottom surface being spaced above a bottom of the two opposing side surfaces;
- and
- forming a dielectric mask layer on the ribs.
1 more element
An apparatus comprising:
- a print head die having a first side configured to face a fluid reservoir and a second opposite side, the die comprising:
- a fluid feed slot through the die;
- ribs extending across the slot, wherein the ribs are recessed from the second side of the die, wherein the slot is between and bordered by two opposing side surfaces, wherein each of the ribs has a top surface and a bottom surface, the top surface being spaced below a top of the two opposing side surfaces and the bottom surface being spaced above a bottom of the two opposing side surfaces;
- and
- countersunk portions on the first side of the die and extending along transverse sides of the slot.
2 more elements
A method comprising:
- forming a slot in a die, wherein forming the slot comprises etching through the die to form the slot;
- forming ribs across the slot, wherein the ribs are recessed from at least one side of the die;
- and
- forming a dielectric mask layer on the ribs, wherein forming the slot and forming the ribs comprises:
- forming a trough in a first side of the die;
- forming a laser ablatable layer on the trough;
- laser ablating a first portion of the laser ablatable layer, wherein second portions of the laser ablatable layer mask the ribs;
- and
- etching the substrate partially through the die to form a floor.
6 more elements
Dependencies are inferred from the claim text.