[Printing-user-general] Imagewriter direct text printing?

from here:
http://www.linuxprinting.org/show_printer.cgi?recnum=Apple-ImageWriter

*Printer supports direct text printing with the `us-ascii' charset.*

I'm afraid I'm not sure how to sent a print job from OS X for use with "direct 
text" on the ImageWriter.  I'm able to send direct text jobs from Windows using 
the generic "Generic/Text Only" driver, which prints very quickly.  In OS
X-land, 
I'm stuck with the second style of print, which means it prints the font the
doc's 
in, etc, which is very slow.

(I'm able to get the same output from Windows using the C-Itoh print driver,
fwiw.  
What I want to do is get plain text on OS X.)

How do I tell the ImageWriter via GIMP print that I want something printed as
us-
ascii?	I didn't see it as an option in setup nor in the printer section of the 
print window.

Any help greatly appreciated.

Ruffin Bailey