Patent ID: 8054495

Claim:
A method of associating in computer memory (i) a digital electronic version of printed human-discernible content of a printed document comprising a sheet having a machine-readable pattern wherein said machine readable pattern enables the determination of the position of a digital pattern reading device, with respect to said sheet, when the digital pattern reading device is placed on the sheet and said human discernible content (ii) the identity of said sheet upon which the content is printed, the method comprising: printing the content onto a sheet using a second printer, said sheet comprising a pre-patterned sheet that has been pre-printed by a first printer with said pattern; in which said first printer has a higher print resolution than the second printer; associating a machine-readable identity code with said sheet at around the time of printing said human-discernable content, wherein said identity code is read from said sheet by said second printer; and storing a correlation between said identity code and said digital electronic version of printed human-discernable content in computer memory.