A set of ink-jet printable proofing sheets are disclosed that each comprise a first printable face having a periphery including first, second, third, and fourth edges. The first and third edges are disposed opposite each other on the first printable face, and the second and fourth edges are disposed...http://www.google.com.tw/patents/US20030189610?utm_source=gb-gplus-share專利 US20030189610 - Certified proofing
