Install a genuine Samsung Black Toner Cartridge for high quality, reliable output from your Samsung laser printer. Your printer will display a flashing red error light when the toner cartridge is nearly exhausted, so make sure you order a replacement as soon as possible. The light will display a solid red light when the cartridge is exhausted, so install the replacement to continue printing without delay. This standard yield toner cartridge is packed with enough black toner to print 1500 pages.