Sorry, my english is very poor...

I installed a color laser printer Samsung CLP-325 under ubuntu 12.04. Works Ok, but when I print a photo in color, it's low quality. Under window$, works Ok and photo are good quality.

Under windows:

Under linux:

I installed the latest version of UPD (ULD_V1.2.00.21.tar.gz) from Samsung webpage.

What am I doing wrong?