Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@y..., "Paul Roark" wrote:

(snip)

>> ... From my
>> experience, the Epson driver cannot be controlled
>>in a manner that allows an
>> acceptable print with the same density inks in the full-strength and
>> light/photo positions.

Martin Wrote:

>What if you leave the photo chambers empty
>or fill them with clear base?

The lightest ink -- yellow position -- would have to carry the entire
highlights.  This is a bit of a stretch, since it is very light.  Also, I
suspect leaving the light/photo positions empty might hurt the jets.

What you'd really like to do is have inks in the light/photo positions that
are about 60% the density of the full-strength inks.  The original MIS quads
have such inks for the hex version of that inkset.  The MIS VM inkset also
has appropriate inks.  These inksets, however, will be a bit warmer than the
FS inkset.

If one wanted to make an FS hex set, the light cyan would be the cyan cut
1:1 with clear base.  This combination could actually be used for both the
cyan and magenta positions.  Or, one could do the same 1:1 cutting of the
magenta for that position.  The light magenta would be the lightest of the
inks, close to the original MIS "25."

Of course, with an inkset like this, there are no curves that are
pre-written.  So, the mixer would be on his/her own.

Paul
http://www.PaulRoark.com

Bernd,

You wrote:

>... that means: for MIS VM Hex printing on a 7000/7500 you need
>the Piezo Pro 24 software ?

No, I was talking about he FS inkset.  The FS inkset is not a variable-tone
inkset.  The MIS VM is the variable-tone.  For the MIS VM, variable-tone
inkset there are at least draft curves available for most current printers.

Paul
http://www.PaulRoark.com

--- In DigitalBlackandWhiteThePrint@y..., "Paul Roark"
<paul.roark@v...> wrote:
> Lon,
>
> You wrote:
>
> >MIS has quadtone FS inks in 4 and 16 oz. sets.  They also
seem to
> >have hextone FS cartridges. ...
>
> I think MIS states that you should call them if you are interested
in FS
> inks in hextone.
>
> I believe the situation is this -- For those using Piezo ink and
driver in a
> hextone printer, the FS inks can be used by putting the full
strength cyan
> and magenta inks in both the full-strength and light/"photo" ink
positions
> for those colors.  That is what the Piezo system does, and it
works very
> well.  However, if you do this you cannot use the Epson driver.
From my
> experience, the Epson driver cannot be controlled in a manner
that allows an
> acceptable print with the same density inks in the full-strength
and
> light/photo positions.  So, there is no Woolf curve that works for
hextones

> and FS inks.
>
> Paul