Patent ID: 6267251
Filing Date: 2001-07-31
Classification: B41J

Abstract:
A print cartridge container/filter assembly comprising:a container including at least one chamber for receiving ink, said container including a standpipe extending into said chamber and defining a passageway for ink to flow out from said chamber; anda filter associated with said standpipe for filtering contaminants from the ink prior to the ink flowing out from said standpipe, said filter comprising a silicon substrate having opposing first and second surfaces and a passage extending therethrough, a first etch resistant material layer formed on said first substrate surface and including at least one opening which extends through said first layer and communicates with said substrate passage, and a second etch resistant material layer formed on said second substrate surface and including a plurality of pores extending through said second layer and communicating with said substrate passage, said second layer defining a filter layer which filters contaminants from ink passing through said second layer,wherein said filter includes an outer circumferential recess which is adapted to mate with an end portion of said standpipe.