PREMIUM OFFICE PAPERS - Optimus/Supreme are both premium papers MULTIPURPOSE COPY PAPER - An Economical multi-purpose white paper works on all types of printers and copiers ACID FREE PRINTER PAPER - Acid-free for added archival quality that extends the life of the document PRINTER PAPER ENGINEERED TO RUN - to run on small and large offset presses, digital imaging equipment, including copiers, laser and inkjet printers, as well as plain-paper fax machines 10 REAM CASE OF PAPER - 10 ream case of paper and provides excellent run ability and printability Optimus/Supreme MP is an economical, multi-purpose office paper. 92 brightness. Great for high-volume needs. Excellent runnability and printability. Acid-free. White. Designed for high- and low-speed copiers, off set presses. Basis WT.: 20 Lb. Guaranteed to run on small and large offset presses, digital imaging equipment, including copiers, laser and inkjet printers, as well as plain-paper fax machines. Flat, even surface for consistent ink and toner receptivity. High opacity for minimal show-through.