20 lb. paper offers dependable performance on all of your office machines. 99.99 percent jam-free paper ensures you will not experience more than one jam in 10,000 sheets on high-speed digital equipment. ColorLok technology ensures that ink dries faster, black ink is bolder and colors are more vivid. Acid-free material prevents the brightness from dulling over time lasting, high-quality results. Paper is perfect for forms, proofing, bulletins, manuals, faxes, general copying and more.