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Soft cover book
1)Perfect binding involves gathering all the signatures for a book into a book block and then grinding off the spine of that block to produce a neat stack of individual sheets. These are then glued into a heavier paper cover to produce a square-spine, paperback volume. This binding is used for the vast majority of trade paperback books because it is easy to produce and economical.
2)Saddle stitching is simply a printer’s term for stapling. Printed, folded forms are opened at their centers (half the pages on one side and half on the other side) and then gathered or nested together – each form falling on top of the next in proper order while riding along a chain.
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