It is probably printing in grayscale - and on B/W printer, colors will appear as grayscale - and gray will appear on a low resolution printer as dots. You need to either change your Pen Set to a B/W pen set - or choose the option to print in B/W.
tq karl, but the drawing to be printed using b/w will same colour different thickness, but cannot appear solid grey like did in dwg ( grey will solid line), so nothing variation in solid black and grey, any another solution for this ???
