D-Link DP-301P+ fails to print 2nd copy of same document

I have been using the D-Link DP-301P+ for about a year with a Epson 980 stylus printer on a home network (2 computers) without any problems until recently. Now I can only print a single copy of the same document (problem is the same from either computer). When I try to print the same document a 2nd time, the printer prints a single line (no text) across the top of the paper, and formfeeds to a 3nd sheet of paper and repeats this same print process. In order to stop the this printing action I must remove the D.C power cable from the DP-301P+. The printer works fine when I connect it to the parallel port of one of the computers. O.S. Win XP pro sp2