kprinter does not print...

Hello, on my 10.0 the kprinter does not print. It is a EPSON CX 3650 printer. The strange: it prints when I do "lpr -P CX3600 test.ps" it prints the cups build in testpage, it prints the gnome testpage. And: it prints if I print in kprinter with UNIX-Lpr. But not when I use kprinter with cups. Any Ideas? Thanks Joern