On Thu, 13 Oct 2011 08:49:50 -0400 "Tom Connolly" <tconnolly at embarqmail.com> dijo:
>Imposition should be left up to the printer. The OP indicates a folded >signature would serve better because of the gluing is an incorrect >assumption, as the machine that applies the glue first removes about >1/16 at the folded edge so the glue will come into contact with each >leaf. This might be correct for some very small home-size binding machines designed to bind only cut sheet books. In the world of printing larger volumes the binding machines do not normally notch the spine. The signatures are first stitched, then gathered into the book block. Notching after stitching would remove the stitching. Take some books down off your shelf and look at the spine from the top and bottom. If all the pages are perfectly evenly spaced, then the book was printed as cut sheets, and bound as you describe (with notching). If you see the signatures, then you can be sure the signatures were stitched, else the inside pages would fall out. I own three binding machines and each one, even though they are all fairly small, has the option to turn off the notching wheel. The machines were made with that option for cases where I want to bind a book with signatures. Note that binding a book with signatures makes a better bind. The stitching is very secure, and the glue is compressed up into the voids between signatures, gripping the edge of the signature much better than glue forced into notches in cut sheets.
