Filter for an ink jet pen
AssigneeHewlett-Packard Development Company, L.P.
InventorsPaul Mark Haines, James W. Ring, Gary D. Tarver
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Abstract
The present invention provides for a filter for an ink jet pen, comprising a filter material configured to attach to the pen, wherein a flow of ink through the filter material is substantially multidirectional. In a preferred aspect, an effective filtration surface area of the filter is substantially greater than any projection surface area of the filter. In another preferred aspect, the filter comprises a chamber at least partially bounded by the filter material, and a flow direction of ink into the chamber is substantially different than a flow direction of ink from the chamber.
Claims48
A filter for an ink jet pen, comprising a filter material configured to attach to the pen, wherein a flow of ink through the filter material is substantially multidirectional.
A filter for an ink jet pen, comprising a filter material configured to attach to the pen, wherein an effective filtration surface area of the filter is substantially greater than any projection surface area of the filter.
A filter for an ink jet pen, comprising:
- an ink filter material configured to attach to the pen;
- and
- a chamber at least partially bounded by the filter material,
- wherein a flow direction of ink into the chamber is substantially different than a flow direction of ink from the chamber, wherein the filter material comprises more than half of a surface area of the chamber.
An ink jet pen, comprising:
- a pen body;
- and
- a filter comprising a filter material for filtering ink,
- wherein a flow of ink through the filter is substantially multidirectional.
A method of filtering ink in an ink jet pen, comprising flowing the ink through a filter material configured to attach to the pen, wherein a flow of ink through the filter material is substantially multidirectional.
Dependencies are inferred from the claim text.