QTR-Quadtone RIP

There is a difference between the B&W output of my HP Z3100 and the 
Z3200. The first has a perfect linear B&W output after calibration. The 
second not. This is most likely a general difference between the two 
models, more reviewers and users observe the difference. As there is 
some advantage to build B&W profiles on top of linearised B&W output I 
am trying to get that right for the Z3200. QTR doesn't support HP 
printers but I can use some tools of it. I try to make use of the 
spectrometer integrated in HP Z models for that task for my own 
convenience but also to help HP Z users later on and extend QTR's tools 
as well. With QTR's linearisation and ICC profile tools + customised 
greyscale targets for the HP Z models it is quite easy now to generate 
QTR linearisation data and B&W "ICC" profiles. So far based on the 21x4 
random greyscale target, there is no reason why an 51x4 random target 
would not work either so  that one will be added. I would like to have a 
fast translation of the linearisation data to a Qimage print filter. Is 
there a tool for a translation like that?

A typical QTR linearisation file looks like this:

QTR-Linearize-Data version 2.7.0.0

File: C:\EPWSMCGATZ3200Greyscale2-out.txt

Step   Dens   Lab   A   B

0.00   0.055   95.21   0.15   -0.05   -                            ba 
                        L  +

4.71   0.115   90.24   0.13   -0.27   -                           b a 
                     L     +

9.80   0.171   85.71   0.25   0.03   -                             b 
                 L        +

14.90   0.231   81.13   0.38   0.00   -                             ba 
               L           +

20.00   0.293   76.63   0.45   0.02   -                             ba 
            L              +

24.71   0.351   72.57   0.56   -0.02   -                            b| a 
          L                +

29.80   0.404   69.04   0.63   -0.10   -                            b| a 
        L                  +

34.90   0.477   64.45   0.75   -0.21   -                            b| a 
     L                     +

40.00   0.534   60.99   0.82   -0.27   -                           b | 
a  L                       +

44.71   0.622   55.97   0.86   -0.55   -                          b  | 
a                          +

49.80   0.757   48.90   0.82   -0.92   -                         b  L| 
a                          +

54.90   0.850   44.43   0.78   -1.02   -                        bL   | 
a                          +

60.00   0.937   40.52   0.75   -0.97   -                       L b   | 
a                          +

65.10   1.044   36.04   0.83   -0.99   -                    L    b   | 
a                          +

69.80   1.173   31.16   0.92   -1.01   -                 L      b    | 
a                          +

74.90   1.294   26.97   1.02   -0.97   -               L         b   | 
  a                         +

80.00   1.464   21.71   1.10   -1.02   -            L           b    | 
  a                         +

85.10   1.703   15.39   1.21   -0.84   -        L                b   | 
  a                         +

89.80   1.958   9.82   1.15   -0.93   -    L                    b   | 
a                         +

94.90   2.249   5.09   0.58   -0.76   -  L                      b   | a 
                           +

100.00   2.407   3.53   0.36   -0.74   - L                        b  |a 
                            +



LINEARIZE="95.213524 90.2394255 85.71437475 81.13369925 76.63015175 
72.57275 69.04462625 64.4461745 60.993701 55.96749975 48.89785 44.43135 
40.52172475 36.04129875 31.15587525 26.965 21.708675 15.386225 9.818 
5.09274 3.5332925"

It is Z3200 HP Vivera PK, Grey, Light Grey, ink on the non-FBA Epson 
Proofing White Semimatte RC paper. Data made with HP Z3200 Color Center 
print, scan, measurement export feature from a 21x4 scrambled target and 
QTR's linearising tool.


met vriendelijke groeten, Ernst


New: Spectral plots of +250 inkjet papers:
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm


|      Dinkla Grafische Techniek      |
|         www.pigment-print.com        |
|                 ( unvollendet )                 |