Method and apparatus for film coated passivation of ink channels in ink jet printhead
AssigneeCompaq Computer Corporation
InventorsDonald J. Hayes, John R. Pies
Life of this patent
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Abstract
A method for film coated passivation of individual grooves or channels in an array of closely spaced grooves or channels of a workpiece, for example, ink channels in a printhead employed in an ink jet printer device; includes the steps of placing the workpiece on a rotation plate having a rotational center, securing the workpiece to the rotation plate with the grooves directed radially outward from the rotational center of the rotation plate, placing resin upon the workpiece in the vicinity of the grooves, and spinning the rotation plate to cause the resin to migrate along the surfaces of the grooves and thereby coating them.
Claims18
A method for coating surfaces of channels of a workpiece, comprising the steps of:
- placing said workpiece on a rotation plate having a centrum for rotation;
- securing said workpiece in position upon said rotation plate such that said channels of said workpiece are generally directed from said centrum radially outward;
- depositing an insulating resin along said surfaces of said channels;
- and
- spinning said rotation plate to cause said deposited insulating resin to migrate along said surfaces of said channels, thereby coating said surfaces thereof.
A method for insulating a microgrooves of an ink jet printhead, said microgrooves having surfaces, said method comprising the steps of:
- placing said ink jet printhead on a rotation plate having a centrum for rotation;
- securing said ink jet printhead in position upon said rotation plate such that said microgrooves of said ink jet printhead are generally directed from said centrum radially outward;
- placing an insulating resin along said surfaces of said microgrooves;
- and
- spinning said ink jet printhead to cause said insulating resin to migrate along said surfaces of said microgrooves, thereby coating said surfaces thereof.
A method for insulating microgrooves of an ink jet printhead, said microgrooves having surfaces, said method comprising the steps of:
- placing said ink jet printhead on a rotation plate having a centrum for rotation;
- securing said ink jet printhead in position upon said rotation plate such that said microgrooves of said ink jet printhead are generally directed from said centrum radially outward;
- filling said microgrooves with an insulating resin;
- and
- spinning said ink jet printhead such that centrifugal force causes migration of said insulating resin which forces the removal from said microgrooves of said insulating resin in excess of said insulating resin necessary for coating said surfaces.
Dependencies are inferred from the claim text.