said hermetically sealed container with said pressure transmitting {TAIL ~ medium} and said driving means situated therein being located within said hollow portion of said holder such that said elastic wall portion is positioned at {HEAD ~ said front portion} of said hollow portion to contact said rear end of said printing element 
said hermetically sealed container with said pressure transmitting { TAIL ~ medium } and said driving means situated therein being located within said hollow portion of said holder such that said elastic wall portion is positioned at { HEAD ~ said front portion } of said hollow portion to contact said rear end of said printing element
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