The purpose of this study is to realize much higher pixel density magnetic printer with such as 2,000dpi than the current 600dpi one. The author has already presented a calculative simulation wherein even at 2,000dpi there exist some conditions that can form one dot black line with sufficient magnetic toner. The second concern is whether white line can be formed between the black lines from the viewpoint of resolution. In this study it is studied whether any suitable conditions exist to form one dot white line between black lines under the high pixel density. The magnetic forces acting on the magnetic toner are calculated with various characteristics of the recording medium and the toner. The parameters are selected from the practical point of view. As a result, it is found that there exist some conditions which satisfy the above condition even at 2,000dpi.