The present invention relates to a technique for detecting that all
components that make up a completed portion of a form are synchronized. A
method is provided for detecting that for a print job, all of the
components that make up a completed portion of each form are printed in
synchronicity or in the case of an error in synchronicity, an error
condition is asserted. The print job comprises at least one form, and
each form may contain more than one image, each image may contains one or
more image planes and the images on each form of a document may vary.
Each image contains a composite image group (CIG) mark comprising the set
of image plane coordination (IPC) marks associated with each individual
image plane. An IPC mark is printed by each print engine such that it is
possible via inspection of these marks to determine if the complete set
of image planes that make up a specific image are present. The present
invention allows one to confirm, using the CIG marks, that all forms in a
print job are synchronized.