Digital BW, The Print

I have to print some geometric designs again where the greyscale pixels 
have to keep their square shape and one of the 205 grey values in this 
design.
The total size will be 1050 x 1050 mm, pixelsize 1,23 mm square in 
print. I have used the Wasatch SoftRip for that task before and it will 
print the pixels as squares with certain settings. Having QTR calibrated 
for the UT inkset and HPR I would like to use it this time but wonder 
how I deal with the dithering, ordered will change the pattern as could 
be expected. Is there a choice in QTRgui that would keep the pixel 
pattern as it is or is there a choice in QTR that isn't represented by 
QTRgui that would suit the task ?  This kind of work returns and I would 
like to do it with QTR. Otherwise I have to return to the other RIP and 
calibrate that one as well which is a lot more work and has other handicaps.

Another way would be to increase the amount of pixels by nearest 
neighbour but I rather keep the file as small as it is and there still 
will be some dithering influences on the pixels at the the edges of the 
squares.

I have tried the ordered and very fast choices but both change the pixel 
shape. I have taken out scaling so the image is just a 100% reproduction.



Another thing: QTRgui shows the paper feed direction next to the preview 
and that is a nice feature. However it doesn't represent the paper 
feeding direction correct when you select a 44 x 20 inch paper size on a 
44 inch roll, a paper size that would fit in the width of the roll. The 
paper feed direction text likes to keep the longest dimension as a 
companion.

Ernst

Ernst Dinkla wrote:

>Another way would be to increase the amount of pixels by nearest 
>neighbour but I rather keep the file as small as it is and there still 
>will be some dithering influences on the pixels at the the edges of the 
>squares.
>
>In the end I have used that method up to 360 PPI + the Adaptive Hybrid dithering choice to get the pixels as square as possible :-)
>

Ernst