Print medium with coded data in two formats, information in one format being indicative of information in the other format

摘要

A print medium for use with a printer, the print medium comprising:a laminar substrate defining first and second opposite faces; first coded data in a first data format disposed in a first data region on the laminar substrate, the first coded data encoding first information; and second coded data in a second data format disposed in a second data region on the laminar substrate, the second coded data encoding second information; wherein the first information is indicative of the second information.