... 5 Toner for OKIDATA printer toner cartridge C 511 DN cartridge for mono printer cartridge 1.Model: for OKIDATA C511 ... with the genuine model .(0.5% grey, 0.5%black%) Delivery way1. DHL, TNT, FEDEX, UPS, Air shipping ... Printing quality test to ensure the printing is real black, sharp, no slur and won't fade.7 ... . All toner cartridges can ensure the printing is real black, sharp, No slur and won't fade. 5 ...