Digital BW, The Print

> ...If the file is only 360PPI, than the highest resolution
>it can print is 360/2 (because it's line pairs) /25.4 is 7.0866 lp/mm.

Yes.  I have used 720 and 1440 resolution test files for the higher
resolutions.  Putting that size file in the files section might be a bit
much, however.

I'll be curious to see what happens with the Epson 1280 when I set it up,
but with the 1160 driver resolutions over 1440 in the image file cause the
driver to throw out image information.  The resolution lines become a mess,
with some missing and some run together.

>> >>> 4. Do papers have a significant impact on resolution/sharpness number
>> >>> of tones rendered and tonal transition
>
>> I have not measured the sharpness of the top RC papers, but my sense of
it
>> is that they show a lot more of the digital artifacts.  Part of this
>> (probably most of it) is that the increased RC contrast makes defects
>> visible that were hidden on matte papers.

>The ink goes in further with matte papers, I believe, which would mean it
>would spread more as well.

As I understand it, however, one purpose of the inkjet coatings is to keep
the ink restricted and pull the water straight down.  That is why the
uncoated papers are less sharp.  With them the ink does spread horizontally.

Paul
http://www.PaulRoark.com