Digital BW, The Print

I wanted to update and correct my previous post on printing Black 
Only in a 1400 with full strength HP Z3100 PK.

First, after just over 1 week on sitting idle, the 1400 had no clogs -
- a perfect noozle check.  I had the HP PK in the Y position, which 
is right next to the Eboni K position.  PK next to MK has been the 
most likely to cause clogs in other printers and with other PKs.  So, 
going a week with no clogs might indicate that the HP PK is at least 
not more likely to clog than other PKs.  The 1400 also has Eboni-6 in 
2 position (and a full 3MK of Eboni).  

Second, I found a significant error in my previous post.  The 1400 
with HP PK on Crane Silver Rag hits a dmax of 2.72, not 1.72 as 
written in the original post.  The 2.72 100% QTR patch has now 
dropped to 2.61 after over a week of drying.  Needless to say, this 
is outstanding.

Paul
www.PaulRoark.com 


"pr_roark" <pr_roark@...> wrote:

> 
> > I just printed a 1400 HP-PK black only test strip on 
> > some old Kirkland glossy paper.  With QTR I was able 
> > to get a dmax of about 2.4.  
> > The tones are shown in this Lab A & B graph:
> > http://www.paulroark.com/BW-Info/1400-HP-PK-BO-Kirkland.jpg
> > 
> > The reflective artifacts are minimal.
> 
> A full image on the Kirkland paper has low enough reflective 
> artifacts that I don't think any glop is warranted.  
> A smooth sky is still smooth; there was no build-up of 
> grain that way we've seen with 
> the 3-MK process.  So, it looks good.
> 
> Ilford Gold FB hits a dmax of 1.72 at an ink limit of 100. 

Wrong -- it hit 2.72.


> The tones are very neutral through the midtones. See 
> http://www.paulroark.com/BW-Info/HP-PK-Ilford-Gold-tones.jpg
> 
> I'm not thrilled with the "glittery" reflections of the Ilford 
> surface, but overall, this is looking like an impressive
> approach if it doesn't clog.
> 
> Paul
> www.PaulRoark.com
>