I searched both Ubuntu forums and LinuxQuestions and it seems that your printer
is not supported, Dell is of no help whatsoever, there may not be Linux drivers
because it does not support PJL and there are no detection signatures. Most
people with your problem went out and bought a new printer rather than succumb
to switching to Windows.

According to the Linux Foundation, who makes the kernel, this printer is a
"paperweight".
www.openprinting.org/show_printer.cgi