A
A-5
Basics of Imposition
• The location of a fold is defined by a dotted line called a fold mark; similarly, the
location of a cut is defined by a solid line called a trim mark.
• Specialized marks also define the size and locations of margins (space surrounding
the page’s content area), gutters (space between pages), and bleeds (extensions of
content beyond a trim mark; used to ensure that printed area extends to the very
edge of a trimmed page).
DocBuilder Pro makes it easy to set up gutters and specify a set of printer’s marks to
image on the finished sheet, as illustrated in the following figure.
Additional sheets
A book layout must also adjust the placement of pages according to the total number
of pages in the job. For example, a book is often composed of more pages than can be
printed on a single sheet. When the number of pages in the book is a multiple of the
number of pages on a sheet, the same layout plan is used to place pages on additional
sheets until all of the pages in the book are printed. However, if the total page count is
not an even multiple of the number of pages in the layout, one signature may be laid
out to accommodate the discrepancy.
Job label
Trim marks
Gutter
Margin
Fold mark
