This FILTER(E) FRC-40-12-6.5 is suitable for Roland FJ-540 printers. This is the original part (number 12399351).
 
Printer compatibility
Roland AJ-1000
Roland AJ-740
Roland CJ-540
Roland FJ-540
Roland FP-740
Roland LEJ-640
Roland SC-540
Roland SC-545ex
Roland SJ-1000
Roland SJ-1045ex
Roland SJ-540
Roland SJ-640
Roland SJ-645ex
Roland SJ-740
Roland SJ-745ex
Roland XC-540
Roland XJ-640
Roland XJ-740
Roland XR-640
Roland AJ-1000i
Roland LEC-300
Roland XJ-540
Roland AJ-740i