Print in commandline prints only empty documents

hello community,

if i share my ghostscirpt-server-printer as \\\\server\\pdf-printer and then start the command line and enter following command on client:

net use lpt1 \\\\server\\pdf-printer

and copy test.txt to the lpt1 by entering

copy test.txt lpt1

i only get empty pdf-files.

any idea whats going wrong?