We are using the Linux View Client 3.4.0 and an IO Gear GUC232A USB to Serial adapter connected to a Ithaca Series 150 receipt printer. The printer is mapped to the appropriate com port at the start of the java application via script:
start /wait /min /cscript //b //nologo "c:\windows\system32\printing_admin_scripts\en-us\prnmngr.vbs" -a -p "Generic / Text Only" -m "Generic / Text Only" -r "COM3:"
The first and second print of the session are missing a line or two of data then it works the rest of the day.