????Philosophy is correct, but math may be confused??? >a printer like my Epson 1200 lays down >1440 drops of ink in a square inch So, about 38X38 blots cover a square inch, SQRT(1440) is about 38)? I think the Epson does much better than this. I think the 1440 is the number of blots in a linear inch, same as with the old DPI measurement. >the general consensus seems to be that using > a factor of one fourth the printer's actual > DPI rating will give the best results 1440/180 = 8 ??? I'd agree that this is in correct ballpark. This gives an 8X8 pattern of blots to approximate a continuous tone. I tend to use 1440/240 = 6. Maybe I'll run some experiments also. Now I've invented a new technical term, "blots". Can Slynky top this?