This Ring ETW-6 SUS is suitable for Roland Printers. This is original Roland part (number 31149704AS).
 
Printer compatibility
Roland FP-740
Roland GX-640
Roland JWX-30
Roland LEC-300
Roland LEC-300a
Roland LEC-330
Roland LEC-540
Roland LEJ-640
Roland RA-640
Roland RE-640
Roland RS-540
Roland RS-640
Roland SC-545ex
Roland SJ-645ex
Roland SJ-745ex
Roland SP-300i
Roland SP-540i
Roland VP-300i
Roland VP-540i
Roland VS-300
Roland VS-300i
Roland VS-420
Roland VS-540
Roland VS-540i
Roland VS-640
Roland VS-640i
Roland XR-640