QTR-Quadtone RIP

I have been troubled with my blacks not looking as deep (dMax) as I'd hoped for with QTR.
This led me to an experiment.

I took a profile curve I had made for Mirco Ceramic Luster and printed 6 21 step scales on 
it with the following settings in QTR.

The profile in CS3 was QTR-Gray-PK

The paper profile was the one I had developed using the profiling capabilities included 
with QTR.

I let the printed sample set for about 2 hours before reading it.  All readings were from the 
Zero to 100.

The six strips were then printed using the paper and ink setting shown in the table.

	1440	1440	1440	2880	2880	2880
LN    PLP	       PQGP	PGP	         PLP	        PQGP	 PGP
1	0.06	0.06	0.06	0.06	0.06	0.06
2	0.12	0.12	0.12	0.16	0.16	0.16
3	0.17	0.18	0.18	0.27	0.27	0.27
4	0.23	0.24	0.24	0.38	0.38	0.38
5	0.29	0.30	0.30	0.49	0.50	0.50
6	0.35	0.36	0.36	0.59	0.59	0.59
7	0.44	0.43	0.43	0.70	0.71	0.71
8	0.51	0.51	0.51	0.82	0.82	0.82
9	0.59	0.59	0.59	0.95	0.95	0.95
10	0.67	0.67	0.66	1.10	1.10	1.10
11	0.74	0.74	0.74	1.26	1.26	1.26
12	0.83	0.84	0.84	1.43	1.43	1.43
13	0.94	0.93	0.94	1.61	1.54	1.60
14	1.04	1.03	1.04	1.76	1.60	1.76
15	1.15	1.16	1.16	1.81	1.70	1.90
16	1.28	1.29	1.29	1.93	2.02	2.02
17	1.42	1.42	1.41	1.86	2.09	2.09
18	1.54	1.54	1.54	2.15	2.15	2.15
19	1.67	1.68	1.66	2.19	2.19	2.01
20	1.81	1.83	1.81	2.22	2.22	2.20
21	1.95	1.94	1.97	2.19	2.20	2.17

Paper: Micro Ceramic Luster						
	QTR-Gray-PK Perceptual					
	MCL-20308-C1 Curve					
Epson Paper Selections in QTR:						
	PLP	Premium Luster Paper				
	PQGP	Photo Quality Gloss Paper				
	PGP	Photo Gloss Paper				

All readings taken with ColorVision SpyderPrint 3 and spectrometer.


This experiment implies that the best results will be with PQGP selected for the paper and 
2880 selected for ink density.

It also appears that this process is probably an important step in the profiling workflow.

Thoughts? Comments?

Regards,
David