Section 10 – Imposition Types

Basic Imposition Types

2-Up Saddle Stitch

2-Up Saddle Stitch imposition is used for booklets, newspapers, magazines, and newsletters, where the sheets that make up a complete  copy of the publication are printed on both sides, then folded and (usually) cut.  The pages are arranged such that the last and first page are on the front of Sheet 1, the 2nd and next-to-last page are on the back of Sheet 1, and so on.

When the “Impose” button is pressed, IDImposer creates a new document to contain the output imposed Sheets, both front and back. 

The required Sheet Width and Height are calculated from the source document dimensions, the Sheet Margins, and the Spacing (Gap) setting. In particular, SheetWidth = 2*SourceDocWidth + Spacing + LeftMargin + RightMargin.

If crop marks are specified, the Sheet Margins must be large enough to contain them.

If the final printed piece has many sheets or uses thicker paper, then the accumulated paper thickness can cause the printing to “shift” as the reader moves from viewing outside sheets to viewing inside sheets. To compensate for this, Outer and Inner Shift (Creep) settings may be used, to shift the page contents as required. Only the page contents are shifted — the margins, spacing, and crop marks have the same absolute location on every sheet.  Note that the source pages must be designed with extra non-essential horizontal space, to accommodate this shifting.

2-Up Perfect Bound

Perfect binding is used for most books. It treats the print job as it it were made up of multiple Saddle Stitch groups (signatures). Each signature is folded in half; then the signatures are bound together to make the book.

The number of pages must be a multiple of 4 times the Sheets Per Signature. Shift compensation, if required, is applied to each signature individually. 

Replicate / Step and Repeat

S&R replicates a source InDesign document, such as a business card or address label, across M columns and N rows. May be 2-sided or 1-sided. If the source document has more than one Page, each page will produce 1 replicated sheet of cards or labels.

N Up Consecutive

N Up writes the pages of your source document consecutively on each output sheet across M columns and N rows per sheet.

Cut Stack

Cut Stack layouts are used when you want to cut to single pages, while utilizing paper and press efficiently by imaging several source pages per sheet. Both one and two-sided layouts are supported.

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