PM is committed to a sustainable environment. In 2009 PM became the first forestry certified paper roll converter in the United States The paper rolls are guaranteed to work efficiently with your machine print-head to provide crisp clear black images. The reliability and performance of a thermal printer is directly related to the quality of the supplies including the paper used by the customer. The IBM® Testing Process is an "Industry Standard" test for the thermal papers used in the marketplace. To be IBM® approved the paper must pass a 100km of paper print-head test without abrasion or build-up with no cutting failures. IBM testing only confirms that the use of approved papers will not negatively affect the operating life of an IBM thermal printer. Manufactured to OEM specifications. Paper Color(s): White Paper Weight: N/A Sheets Per Unit: N/A Rolls Per Unit: 50.Unit of Measure : Carton