Fig. 2 Bidirectional pitch test, 85 ink jet headsHaving disabled bidirectional printing and resent thepitch test, again printing with 85 ink jet heads, the error inthe print was greatly reduced, resulting in what much moreclosely resembled vertical lines (Fig. 3). However, therewas still a certain amount of error within the print, as there appeared to be a slight diagonal tendency within the dotsbeing printed.