Hi
I did several profiles using Profile prism,the colors are noticeably improved , but i faced a tiny problem.
The white area in the printed image become little gray , even when i tested the profile in the Photoshop by "convert to  profile" the white turn to light gray, so it is not a driver problem.

Any one know what is my mistake?

Thank you dear for your fast replay ,
I used the recommended settings that mentioned in the help file for the printer and scanner ( both are epson).
these are all the details:
 - the target charge number : R130730
 - for Prism target, i got these results:
        Exposure: image is properly exposed (231)
        White balance accuracy : 1% ( excellent - white balance is very accurate)
        Light variance: 5% ( excellent - even lighting across chart)
        3 patches marks with (x) art at minimum/maximum brightness
        shadow detail: Good - darkest gray patch clipped
- for Printer target ,  i got these results:
        Exposure : 223.
        3 patches marks with (x) art at minimum/maximum brightness
- After I Create the profile I got these final results:
       Printer/paper/ink dynamic range: 72.2
       Printer/paper/ink coverage of Lab space: 10.1%
       Smoothing required: 4 passes
       Printer profile usable range: 0-255, 0-255, 0-255

is there any thing else you need to know?

From your statement above, I am wondering if you are working the editor backwards.
In the editor, you are matching the the adjustments to a PRINT!!
Matching is the key word.
For example, Let's say that your test print is lacking contrast and the whites are gray.
If you make the adjustment to move the contrast slider to the right to make the whites whiter, you are working backwards.

What that does is assume you are MATCHING the right side to your print, and your print has TOO MUCH contrast, and therefore will lower the contrast when making the edit.

The principle of the edit screen is for you to have a test image on the left, (assuming a reasonably calibrated monitor) and a second copy on the right.
You make a print of the test image with the driver set to the same settings you used when you printed the target. (Paper selection, quality setting, No Color Adjustment), and the profile in position in Qimage.
Now you compare the print to the right side of the edit screen, and move sliders to MATCH no to correct.
See screen snap... right side is showing lower contrast, darker grays.... and will tell Profile Prism, that is what my print looks like: FIX it!

So if you see that your whites need whitening and the blacks are not black enough, you move the sliders left to lower the contrast to match.
Then the edit will compensate and lighten the edited grays to white.
That's all I can think of from your posts.
If I guessed wrong, you are welcome to email the profile to me and perhaps we can find something.  wathree.ssz@verizon.net

What paper are you trying to profile...

Fred

I did sevral profiles , one of them doesnt chang the white area to light gray , it keeps white(255,255,255), i dont remember how i did it
BUT???
when i edit it in the profile editor to fix the neutral/gray casting,the white starts to become gray
i only reduced the yellow using the Color Tweaking Wizard and  picked the center dot in the color wheel to indicate that i want to make a change in neutral grays in the image, thats all i did

i sent both profiles to fred, to check

thank you all,,,