Claims
- 1. A system for supplying liquid ink to a thermal ink jet printing apparatus, comprising:
- a housing defining a chamber having a ventilation port and an outlet port;
- a liquid ink retaining medium occupying at least a portion of the chamber; and
- a scavenger member disposed across the outlet port, providing a capillary force greater than a capillary force provided by the medium, said scavenger member being substantially free of residual foaming surfactants and free of loose particles.
- 2. A system as in claim 1, wherein the scavenger member comprises a high density, fine pore fully open cell polyester polyurethane.
- 3. A system as in claim 1, further including a filter cloth attached to the scavenger member.
- 4. A system as in claim 3, wherein the filter cloth comprises monofilament polyester screening fabric.
- 5. A system as in claim 3, wherein the filter cloth is adhered to the scavenger member during a felting process.
- 6. A system as in claim 3, wherein the filter cloth comprises 11 micron pores.
- 7. A system as in claim 1, wherein the scavenger member comprises ULTRA FINE.
- 8. A system for supplying liquid ink to a thermal ink jet printing apparatus, comprising:
- a housing defining a chamber having a ventilation port and an outlet port;
- a liquid ink retaining medium occupying at least a portion of the chamber; and
- an ink delivery and filtration medium comprising a high density, fine pore fully open cell polyester polyurethane disposed across the outlet port.
- 9. A system as in claim 8, wherein the ink delivery and filtration medium is ULTRA FINE.
- 10. A system as in claim 8, wherein a filter is attached to the ink delivery and filtration medium.
- 11. A system as in claim 10, wherein the filter comprises 11 micron pores.
- 12. The system of claim 1, wherein the scavenger member is permanently densified by compression and is felted to a predetermined density and absorbancy by applying heat and pressure.
- 13. The system of claim 8, wherein the medium is permanently densified by compression and is felted to a predetermined density and absorbancy by applying heat and pressure.
- 14. The system of claim 8, wherein the ink delivery and filtration medium is free of surfactants.
Parent Case Info
This application is a continuation-in-part application of U.S. patent application Ser. No. 07/885,704, filed May 19, 1992, the disclosure of which is incorporated herein by reference.
US Referenced Citations (9)
Non-Patent Literature Citations (1)
Entry |
"Method of Operation of Ink Jet Printer" by Dale R. Ims et al., Xerox Disclosure Journal, vol. 16, No. 4 Jul./Aug. 1991, p. 233. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
885704 |
May 1992 |
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