QTR-Quadtone RIP

Hello Myron,

the same effect appears on my ink seperation test charts or whenever i drive the ink limit over a certain level with some papers: beyond a certain total ink level (including PK) the DMax and gloss decreases with increasing total ink amount. I use the UT3D inkset of MIS on an 3880; the PK should be the same you use. 

Tobias 

--- In QuadtoneRIP@...m, "MyronG" <goch@...> wrote:
>
> I recently switched my Epson 4880 printer from MIS matt black to photo black.  
> 
> I noticed that the MIS photo black showed "gloss differential" -- i.e. deep black showed a slight "haze" in comparison with other tones and colors.
> 
> Since the 4880 is sitting next to a 3880, which is using Epson K3 inks, I printed out a page of pure black on the two printers, using Kirkland glossy paper.
> 
> The Epson black was plainly glossier (no haze at all).  I measured the densities:  Epson photo black had a density of 2.48, and MIS photo black had a density of 1.97.
> 
> The MIS result was surprising.   Even Paul Roark's tweaking of the black-only Epson 1800 (?) to allow printing on glossy papers did noticeably better. (...and this did not use the MK/PK cartridge at all.)
> 
> Are my results surprising?  If so, does anyone know what might be going on? If not, is there any alternative to using Epson's pricey ink?  (Archival properties are important!)
> 
> Myron
>