发明名称 |
FLUID HANDLING DEVICE WITH FILTER AND FABRICATION PROCESS THEREFOR |
摘要 |
Relatively small fluid handling devices having a filter bonded on the surface containing the fluid inlets. An example of such a device is a thermal ink jet printhead. A substantially flat filter is placed at the ink inlet to the printhead by a fabrication process which laminates a wafer sized filter to the aligned and bonded wafers containing a plurality of printheads. The individual printheads are obtained by a sectioning operation, which cuts through the two or more bonded wafers and the filter. The filter may be a woven mesh screen or, preferably, an electroformed screen with a predetermined pore size. Since the filter covers one entire side of the printhead, the relatively large contact area prevents delamination and enables convenient leak-free sealing. The filter prevents the entrance of contaminants into the relatively large inlets of the printhead at an early stage of assembly and packaging. |
申请公布号 |
CA1321360(C) |
申请公布日期 |
1993.08.17 |
申请号 |
CA19890608628 |
申请日期 |
1989.08.17 |
申请人 |
XEROX CORPORATION |
发明人 |
KNEEZEL, GARY A.;DRAKE, DONALD J.;FISHER, ALMON P. |
分类号 |
B01D29/01;B41J2/16;B41J2/175 |
主分类号 |
B01D29/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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