Gutter Marks

Gutter Marks:

Printer marks along the gutter side of the interior pages are utilized for calibration and help to keep toner levels consistent. These marks must be positioned just outside of the gutter edge and cannot be moved to an area that is trimmed off. The spines are milled prior to binding to minimize visibility of the marks. Typically, they aren’t very visible, but printed books with slightly visible printer marks, within the gutter, may be considered within our production variance. 

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