Digital BW, The Print

Paul:

The problem I see with your proposal is that it really depends on the 
settings used to scan the purge pattern especially the dark end.  It 
makes a significant difference in the brightness/lightness along the 
0-100% scale if the black patch is or is not set to 100% and the 
white patch (no ink patch) to 0%.  Purge prints I've measured have a  
black patch value of about 82% unless I use the histogram to pull it 
to 100%.  I'll be happy to send Martin a FS quad file if we can agree 
to the conditions.  I don't want to add to the confusion.

Jeff Randall 

--- In DigitalBlackandWhiteThePrint@y..., "Paul Roark" 
<paul.roark@v...> wrote:
> The yellow-position Piezo/FS ink is light.  Maybe someone running 
Piezo or
> FS could print a purge pattern to be put into the files section so 
that we'd
> have a reference.  While the ink is light, it should show up 
clearly when
> printing a purge pattern.
> 
> (I prefer the old MIS purge patterns that contain a dark cyan bar.  
MIS
> recently changed to a pattern that has a blue bar instead of the 
cyan bar.
> This mixes cyan and magenta, which means that we cannot easily see 
if those
> inks are installed correctly.  I have the old ones, which should 
probably be
> posted on the forum along with the patterns that result from the 
various
> inks we use.)
> 
> Paul
> http://www.PaulRoark.com
> ________________________________________
>   -----Original Message-----
>   From: biw3450 [mailto:bwolf@e...]
>   Sent: Sunday, September 15, 2002 4:50 AM
>   To: DigitalBlackandWhiteThePrint@y...
>   Subject: [Digital BW] Piezo Inks
> 
> 
>   Have resently purchased Piezotone WN ink set. Clean heads 20+ 
times
>   to clear Epson 1280 color inks. When I print head check the yellow
>   position is almost non-existent. Made about 10 large prints that 
look
>   good but wondering if I'm not missing some of the tonality 
because of
>   the very faint yellow position head.
> 
> 
> 
> 
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