JP-1000 (260-2960) Printing from MS-DOS Faxback Doc. # 15057 If you want to print from outside any application in MS-DOS, you must have the black cartridge installed. Since the color cartridge is not capable of printing in black without wasting a lot of ink. (It print color on top of color to achieve the color black) If you attempt to print from MS-DOS with the color cartridge installed, the ON and ON-LINE LEDs will flash alternatively. (ABO/all-04/19/95)