FOR USE WITH: HL-4140CN, HL-4150CDN, HL4570CDW, HL4570CDWT, DCP9055CDN, MFC9460CDN, MFC9465CDN, MFC9970CDW Original Brother toner is formulated to meet high quality resolution, grey scale and block colour, in line with Brother's high design specification. But don't be tempted to cut corners by using cheap consumables, as this can mean poor results, and in extreme cases could invalidate the manufacturer's warranty. The manufacturer's original consumables will always be the best choice, as they have been designed to deliver the best performance from our machines. Toner particle size, shape and colour pigmentation all have a direct impact on the sharpness of the printed image. Brother's toner is formulated to exacting standards to ensure you receive high quality print resolution and reliability.