A device for stacking selected sheets in an offset manner so as to facilitate print quality measurements. Certain sheets are automatically or manually selected to be offset deposited onto a stack of sheets so that an edge of the selected sheet including a number of printed measuring fields extends beyond...http://www.google.com.au/patents/US5319215?utm_source=gb-gplus-sharePatent US5319215 - Offset sheet-stacking method and apparatus for facilitating print quality measurements of printed sheets
