Applescript to hide print queue
One idea that comes to mind is to use the command line tools to print the files. If the files are sent to the printer without any pre-processing - in other words raw - then the following command should do it...

lp  somefile.txt - if your printer is the default

or

lp -d MyPrinter somefile.txt - for non-default printer

Use lpstat -a to get a list of printers and their Unix names.

From applescript you would have to do it this way...

set pFile to POSIX path of txtFile
do shell script "lp " &amp; quoted form of pFile