Digital BW, The Print

I find that I generally need at minimu 220ppi original image data to 
get a good b&w print... with certain images and interpolation and 
processing I can sometimes get away with much less.  300ppi seems 
unquestionably good.  The Epson printer driver then interpolates up 
to 720 so there might be something to sticking to fractions of that 
or interpolating up to 720... but in the casual experiments I've done 
using different interpolation schemes I have't seen any *real* 
improvement which makes it worth the time (do the math... you can end 
up with some huge files)... but others disagree.

mark

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "marcsien77" 
<marcsien77@y...> wrote:
> I would appreciate group members' opinion re. what is the optimum 
> resolution for grayscale images for a 1440 dpi inkjet output.  I 
have 
> seen a number of different recommended values such as 240, 360 or 
> 480ppi which left me a bit confused. Thanks in advance,
> Marc.