Source: http://www.google.com/patents/US20040080582?dq=%22melissa+white%22
Timestamp: 2015-11-28 05:13:13
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Patent US20040080582 - Micro-electromechanical fluid ejection device having actuator mechanisms ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA micro-electromechanical fluid ejection device includes a substrate that defines a plurality of fluid supply channels and a plurality of chambers in fluid communication with respective fluid supply channels. A drive circuitry layer is positioned on the substrate. A plurality of roof structures is connected...http://www.google.com/patents/US20040080582?utm_source=gb-gplus-sharePatent US20040080582 - Micro-electromechanical fluid ejection device having actuator mechanisms located about ejection portsAdvanced Patent SearchPublication numberUS20040080582 A1Publication typeApplicationApplication numberUS 10/728,921Publication dateApr 29, 2004Filing dateDec 8, 2003Priority dateJun 8, 1998Also published asUS6247790, US6488358, US6505912, US6672708, US6712986, US6886918, US6899415, US6966633, US6969153, US6979075, US6981757, US6998062, US7021746, US7086721, US7093928, US7104631, US7131717, US7140720, US7156494, US7156498, US7179395, US7182436, US7188933, US7204582, US7284326, US7284833, US7325904, US7326357, US7334877, US7381342, US7399063, US7413671, US7438391, US7520593, US7533967, US7568790, US7637594, US7708386, US7753490, US7758161, US7857426, US7922296, US7931353, US7934809, US7942507, US7997687, US20010035896, US20020021331, US20020040887, US20020047875, US20030071876, US20030107615, US20030112296, US20030164868, US20040080580, US20040113982, US20040118807, US20040179067, US20050036000, US20050041066, US20050078150, US20050099461, US20050116993, US20050134650, US20050200656, US20050243132, US20050270336, US20050270337, US20060007268, US20060214990, US20060219656, US20060227176, US20060232629, US20070013743, US20070034597, US20070034598, US20070080135, US20070139471, US20070139472, US20080094449, US20080117261, US20080192091, US20080211843, US20080316269, US20090073233, US20090195621, US20090207208, US20090267993, US20100073430, US20100207997, US20100271434, US20100277551, US20120019601Publication number10728921, 728921, US 2004/0080582 A1, US 2004/080582 A1, US 20040080582 A1, US 20040080582A1, US 2004080582 A1, US 2004080582A1, US-A1-20040080582, US-A1-2004080582, US2004/0080582A1, US2004/080582A1, US20040080582 A1, US20040080582A1, US2004080582 A1, US2004080582A1InventorsKia Silverbrook, Gregory McAvoyOriginal AssigneeSiverbrook Research Pty LtdExport CitationBiBTeX, EndNote, RefManPatent Citations (17), Classifications (46), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetMicro-electromechanical fluid ejection device having actuator mechanisms located about ejection ports
US 20040080582 A1Abstract
A micro-electromechanical fluid ejection device includes a substrate that defines a plurality of fluid supply channels and a plurality of chambers in fluid communication with respective fluid supply channels. A drive circuitry layer is positioned on the substrate. A plurality of roof structures is connected to the drive circuitry layer to cover respective fluid chambers. Each roof structure defines a fluid ejection port. At least one actuator is positioned in each roof structure. Each actuator is electrically connected to the drive circuitry layer to be displaceable into and out of its respective chamber to eject a drop of fluid from the fluid ejection port. Images(16) Claims(7)
We claim: 1. A micro-electromechanical fluid ejection device that comprises a substrate that defines a plurality of fluid supply channels and a plurality of chambers in fluid communication with respective fluid supply channels; a drive circuitry layer that is positioned on the substrate; a plurality of roof structures that are connected to the drive circuitry layer to cover respective fluid chambers, each roof structure defining a fluid ejection port; and at least one actuator that is positioned in each roof structure, each actuator being electrically connected to the drive circuitry layer to be displaceable into and out of its respective chamber to eject a drop of fluid from the fluid ejection port. 2. A micro-electromechanical fluid ejection device as claimed in claim 1, in which a number of actuators are positioned in each roof structure about the ink ejection port. 3. A micro-electromechanical fluid ejection device as claimed in claim 2, in which each actuator includes an actuator arm that is connected to the drive circuitry layer and extends towards the fluid ejection port, a heating circuit being embedded in the actuator arm to receive the electrical signal from the drive circuitry layer, the actuator arm being of a material that has a coefficient of thermal expansion sufficient to permit the material to perform work as a result of thermal expansion and contraction, the heating circuit being positioned so that the actuator arm is subjected to differential thermal expansion and contraction to displace the actuator arm towards and away from the respective fluid supply channel. 4. A micro-electromechanical fluid ejection device as claimed in claim 3, in which each actuator arm is of polytetrafluoroethylene while each heating circuit is one of the materials in a group including gold and copper. 5. A micro-electromechanical fluid ejection device as claimed in claim 3, in which each actuator arm includes an actuating portion that is connected to the drive circuitry layer and a fluid displacement member that is positioned on the actuating portion to extend towards the fluid ejection port. 6. A micro-electromechanical fluid ejection device as claimed in claim 3, in which each roof structure includes a rim that defines the fluid ejection port, the rim being supported above the respective fluid inlet channel with support arms that extend from the rim to the drive circuitry layer, the actuator arms being interposed between consecutive support arms. 7. A micro-electromechanical fluid ejection device as claimed in claim 1, in which the drive circuitry layer is a CMOS layer.
CROSS REFERENCES TO RELATED APPLICATIONS [0001] This application is a continuation application of U.S. Ser. No. 09/855,093, now U.S. Pat. No. 6,505,912. The disclosure of U.S. Pat. No. 6,505,912 is specifically incorporated herein by reference. [0002] The following Australian provisional patent applications are hereby incorporated by cross-reference. For the purposes of location and identification, U.S. patent applications identified by their U.S. patent application Ser. Nos. (USSN) are listed alongside the Australian applications from which the U.S. patent applications claim the right of priority. US PATENT/PATENT APPLICATION (CLAIMING RIGHT CROSS-REFERENCED OF PRIORITY AUSTRALIAN FROM AUSTRALIAN PROVISIONAL PATENT PROVISIONAL APPLICATION NO. APPLICATION) DOCKET No. PO7991 09/113,060 ART01 PO8505 09/113,070 ART02 PO7988 09/113,073 ART03 PO9395 09/112,748 ART04 PO8017 09/112,747 ART06 PO8014 09/112,776 ART07 PO8025 09/112,750 ART08 PO8032 09/112,746 ART09 PO7999 09/112,743 ART10 PO7998 09/112,742 ART11 PO8031 09/112,741 ART12 PO8030 09/112,740 ART13 PO7997 09/112,739 ART15 PO7979 09/113,053 ART16 PO8015 09/112,738 ART17 PO7978 09/113,067 ART18 PO7982 09/113,063 ART19 PO7989 09/113,069 ART20 PO8019 09/112,744 ART21 PO7980 09/113,058 ART22 PO8018 09/112,777 ART24 PO7938 09/113,224 ART25 PO8016 09/112,804 ART26 PO8024 09/112,805 ART27 PO7940 09/113,072 ART28 PO7939 09/112,785 ART29 PO8501 09/112,797 ART30 PO8500 09/112,796 ART31 PO7987 09/113,071 ART32 PO8022 09/112,824 ART33 PO8497 09/113,090 ART34 PO8020 09/112,823 ART38 PO8023 09/113,222 ART39 PO8504 09/112,786 ART42 PO8000 09/113,051 ART43 PO7977 09/112,782 ART44 PO7934 09/113,056 ART45 PO7990 09/113,059 ART46 PO8499 09/113,091 ART47 PO8502 09/112,753 ART48 PO7981 09/113,055 ART50