Multipurpose paper in Express Pack is designed to run in small and large offset presses, copiers, laser printers, inkjet printers and fax machines that use plain paper. Express Pack stores paper in sheets instead of separating it into reams for easier access. 99.99 percent jam-free paper is acid-free for added archival quality that extends the life of your document. 20 lb. paper also offers high opacity for minimal show-through. Flat, even surface allows consistent ink and toner receptivity. Use for copies, memos, forms, manuals, reports, plain paper faxes and more.