The 4227 series printer ribbon has been specially designed to provide optimum performance and reliability with the Lexmark Forms Printer 4227 and 4227 plus. It is a highly reliable fabric ribbon that is quick and easy to change. The plastic shield guide eases installation and provides a ?clean hands? operation. The average 15-million-character yield allows extended unattended printing without the worry of needing to change supplies. In addition to worry-free operation the lower number of interventions required by this long-life ribbon provides value and cost savings to the customer.The 4227 series printer ribbon is for use in the Forms Printer 4227 plus and 4227 printers. The 4227 printer ribbon P/N 11A6150 is NOT for use in the Forms Printer 4227 plus. The higher speed of the Forms Printer 4227 plus requires the specially designed printer ribbon. Print ribbon - 1 x black - 15 million characters