Using side verify marks

Do this procedure to define or specify side verify marks, which are used to determine the correct placement of the back side of a duplexed page. Use the Edit window to change the size and location of the mark.

When printing in Duplex mode, Printer 1 prints a side verify mark on the page. Printer 2 reads the mark and uses it to determine the correct placement of the back side of the page. This ensures that the back side prints on the same sheet as its corresponding front side. You may choose to print human readable page numbers along with the side verify mark. The page numbers can be placed above or below the side verify mark.

Side verify marks are placed relative to the physical edge of the form to allow printing the mark in the tractor strips on tractored forms. The marks are printed in the same location on tractorless forms.


  1. Select Forms -> Special Marks to display the Special Marks panel.
  2. Select Side Verify in the Special Marks window.
  3. If you want to make changes to the side verify mark, select Edit... to display the Edit window and use the following fields to change the size or location of the mark.
    When Same Side Printing is set to Yes for duplex data, the side verify mark is automatically positioned to an equivalent position on the opposite side of the page so that the mark can be read by the sensor. This could change the mark alignment position and its offset value in the Across Paper Feed Direction.
  4. Select OK to save your changes.