OKI Black Ribbon Cartridge – 7.5 Million Characters – dot-Matrix Printers Tape : Amazon.co.uk: Computers & Accessories
MARS POS Ribbons Compatible with Oki Microline 420 Okidata 42377801 (Black, 3 Pack)
Okidata 420/421 OEM Ribbon - Integral Rx
FOR OKI MICROLINE ML 5520 ML 5521 eco BLACK Ribbon Cassette BEST COMPAT By SMCO | eBay
User manual OKI Microline 420 (English - 97 pages)
Buy Porelon 11582 Okidata Microline 420/421 Black Nylon Replacement Printer Ribbon, 1 Pack Online at Lowest Price Ever in India | Check Reviews & Ratings - Shop The World