Digital BW, The Print

Hi Colin,

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark"
<paul.roark@...> wrote:
>> ... be sure not to use my original PKN that
>> is on the MIS "Roark's Lab" page
>> (http://www.inksupply.com/roarkslab.cfm)(not my doing).

... because it is too green (too much cyan) for the midtones.

>In message 88451 you advised me "For a neutral PK print, 
>take a look at the UT-RC inkset. The PKN is quite nice.
>It has some cyan and R800 Blue in it, but I held it down 
>as much as I could and still have what I considered a good 
>black only print."

Yes, the RC inks have a blue mix that is appropriate for the midtones, and
they have less blue in them than the original PKN that is too greenish for
midtone use.

>Following this advice I bought 24 Oz of "UTPKN-4", installed 
>them in a new continuous supply system and used loads of 
>expensive new fiber papers in testing.

>Is this the wrong ink to have used? 

It looks like that is what they call the original PKN from this page:
http://www.inksupply.com/roarkslab.cfm  and it will probably be a bit on the
green side.  If you have a newer printer, it may also be too high a load.
The new, fast printers like a lower load PK.

>You also said "There are also dilute RC inks for the R260 etc. 
>that would make a good inkset for the 1800, but I have not gone 
>there." For this reason I did not buy them.

Carl is having such good luck with the RC neutral PK, that I'd recommend
following his lead on this.

http://www.inksupply.com/r260_blackandwhite.cfm is the MIS page that has the
RC inks on it.  See the labels at the tops of each table.  The first three
are the carts, then the bulk inks are listed by their warmth -- warm
(carbon), neutral (what Carl is using), and cool (which might give you a
straighter tone curve if used in the highlights and light midtones --
experiment).

Hope this helps.

Paul
www.PaulRoark.com