Digital BW, The Print

What I don't get is, does this mean that you can really optimally
print only 4 or 5 different sized prints for a given file.  Say with a
given file you can print an 8x10 print at 720 ppi.  Then say you want
to crop it differently leaving the file smaller by 15%.  Does that
mean you can't print the file at the 8x10 size because it would no
longer print at 720 ppi (or 360 ppi)?  Or odes the printer dricer
automatically re-size file sent ot the printer to the optimal
resultion for the printer.  It would seem quite odd to me that a
proffessional quality printer would be so limited in effective print
sizes.  Or is the quality difference between printing at 360 ppi and
320 ppi in fact almost impossible to see?  I don't think I ever try to
print at 360 or 720 ppi.  I take the file as it comes and if I want an
8x10 or an 11x14 I print it to that size (using 1160 with CIS &
Piezotone inks).  I never really see any problems with the resolution,
detail, or quality of the print.

What shouls I be noticing in a print not printed at a multiple of 720
ppi that I am not seeing?


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Bob Frost"
<bob@f...> wrote:
> Steve,
> 
> I haven't printed at some of those resolutions, but I always
understood that 
> the numbers should be factors of 720ppi, the ppi that the printer
uses for 
> printing, not the dpi. So 360ppi is OK, as is 240 and 180, but not
480 or 
> 576. Easy to confirm by printing a set of black and white 1 pixel
lines and 
> looking for the aliasing patterns. Many give you a lovely 'tartan' like 
> print (for those of you who know of Scotland).
> 
> Bob Frost.
> 
> 
> ----- Original Message ----- 
> From: "Steve Kale" <stevekale@b...>
> 
> 
> I understood good practice to be at least always use a clean factor
of the
> print resolution ie 2880/4=720, 2880/5=576, 2880/6=480, 2880/8=360,
> 2880/9=320, 2880/10=288.  The 300 simply came about as a result of
the old
> 2x150lpi (as Bob Frost noted in an earlier post).