Digital BW, The Print

I think combining the best blended neutral ink with the best base in terms of bronzing and gloss differential is a natural.  So, I've mixed 1/3 HP-PK with 2/3 MIS Glop to make an ink that is quite close to the density of the HP Grey ink.  I've printed test strips with the HP Grey and HP-Glop combination and posted them to show the difference in bronzing.

Here is a comparison: 
http://www.paulroark.com/BW-Info/HP-Grey-v-HPPK-Glop.jpg

This snapshot was under a fluorescent light.  The paper was Epson Premium  Photo Paper Glossy.  The printer was a WF 1100 set up in the "EZ" configuration -- 3 LK inks.  The PK in both shots was MIS PK (warm 100% carbon).

Some people have had a similar HP-Glop combo in printers for some time.  So, it's had a fairly good beta test already.  However, I'll let it sit in the 1100 for a while before going to another printer with it.

I'm going to be playing around with the HpPk-Glop mix in the 1100 for a while as a prelude to possibly setting my 7800 up with a dual quad configuration: Eboni-4 and HpPK-glop + MIS PK in 4 positions.  This would give not only my 100% carbon matte but also neutral matte on most papers and glossy with no bronzing or need to spray or coat.

Paul
www.PaulRoark.com

That looks promising.


[Non-text portions of this message have been removed]

I'm posting my notes on the inkset made with the HP PK diluted with MIS Gloss Optimizer ("HpGO") at 
http://www.paulroark.com/BW-Info/1100-HpGO.pdf

I've use 2:1 dilution ratios for the LK and LLK.  This should make bulk mixing easier with no need for scales.  To stay with (roughly) standard densities I'm using one LLK and 2 LKs.  This will allow, particularly for where this may end up, people who want to use standard HP Grey and Light grey to tap into the various profiles I may generate.



Paul
www.PaulRoark.com

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul" <roark.paul@...> wrote:

> I'm going to be playing around with the HpPk-Glop mix in the 1100 for a while as a prelude to possibly setting my 7800 up with a dual quad configuration: Eboni-4 and HpPK-glop + MIS PK in 4 positions.  This would give not only my 100% carbon matte but also neutral matte on most papers and glossy with no bronzing or need to spray or coat.
>

Looks very interesting Paul. 

Are you more comfortable now with recommending Glop as a base for HP-C6 or HP-C5, rather than the Clear Base formula? Will it completely eliminate the need for a Glop cartridge?

I'm curious . . .  why use MIS PK for the K, rather than the HP PK?

Thanks.

Terry.

"Terry Ritz" <t.ritz@...> wrote:
>
>... 
> 
> Are you more comfortable now with recommending Glop as a base for HP-C6 or HP-C5, rather than the Clear Base formula?

I think they serve slightly different markets.  The C6 user-mixed base is obviously the least expensive, and it's what I'd continue to use if printing only on matte paper. 

The Gloss Optimizer dilution base, however, allows glossy printing with vastly reduced reflective artifacts.  I think combining a truly fine art quality pigment with this relative lack of artifacts adds significantly to what is available to us.  

> Will it completely eliminate the need for a Glop cartridge?

It will for me.  There probably are still some papers that will show artifacts, but there are also papers that look very good with nothing more.  I'm definitely not a fan of sprays or running a print through a printer a second time for coating.


>  why use MIS PK for the K, rather than the HP PK?

It's a fraction of the cost or the HP PK and it avoids the gloss differential at that end.  The HP PK is high gloss.  It's so dark by the time the MIS PK takes over that it's not an issue in terms of color or hue.  A less than 2 unit Lab B rise at 90% is not even visible to me.

I might add a note on costs.  The LK density inks cost is the equivalent to $32 per 4 oz. bottle when MIS glop is used as the dilution base.  The LLK ink is the equivalent of $20/4 oz. bottle.  The PK, of course, is MIS' usual $18/4 oz.  So, we're looking at an average of about $25/4 oz bottle in terms of comparing prices.  This is not a bad price for a neutral monotone pigment that is in a class by itself.  So, with MIS supplying about 80% of the volume of the final ink, the costs are held way down.  

I'll be adding material to the PDF at http://www.paulroark.com/BW-Info/1100-HpGO.pdf as I learn more.

Paul
www.PaulRoark.com

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul" <roark.paul@...> wrote:

> It's a fraction of the cost or the HP PK and it avoids the gloss differential at that end.  The HP PK is high gloss.  It's so dark by the time the MIS PK takes over that it's not an issue in terms of color or hue.  A less than 2 unit Lab B rise at 90% is not even visible to me.
> 

So, in an HP-C5 configuration, using Glop as the base and HP PK for the K, I can still expect some gloss differential in the near-black to black tones. Conversely, if I use MIS PK for the K, the near-black to black gloss differential is reduced or eliminated. Do I have that correct?

Terry.

"Terry Ritz" <t.ritz@...> wrote:
>
> ...
> So, in an HP-C5 configuration, using Glop as the base and HP PK for the K, I can still expect some gloss differential in the near-black to black tones. Conversely, if I use MIS PK for the K, the near-black to black gloss differential is reduced or eliminated. 

Yes.  I'm not sure how much difference it all makes, but my memory of combining inks that are high gloss with low gloss is that the transition between the low and high gloss inks can show.

Paul
www.PaulRoark.com

Thanks Paul.

Terry.

On 11-04-27 8:03 PM, "Paul" <roark.paul@...> wrote:

> "Terry Ritz" <t.ritz@...> wrote:
>> 
>> ...
>> So, in an HP-C5 configuration, using Glop as the base and HP PK for the K, I
>> can still expect some gloss differential in the near-black to black tones.
>> Conversely, if I use MIS PK for the K, the near-black to black gloss
>> differential is reduced or eliminated.
> 
> Yes.  I'm not sure how much difference it all makes, but my memory of
> combining inks that are high gloss with low gloss is that the transition
> between the low and high gloss inks can show.
> 
> Paul
> www.PaulRoark.com