Adhesive binding – A relatively cheap method of binding in which the pages are trimmed at the back (normally 3mm trim), then held together and fixed to the cover by means of flexible adhesive. Widely used for paperbacks, manuals, and textbooks. Also called perfect binding.
Against the grain – Folding or cutting paper at right angles to the machine direction of the paper. This should be avoided wherever possible on a perfect bound job. It is important that printed sheets are laid down correctly to avoid it.
Back – The bound edge of a book.
Back margin – The space between the bound edge and the type.
Bolt – The folded edge of a sheet before cutting or trimming.
Book-block – The pages of a book when prepared for binding before adding the cover.
Bulk – The thickness of a book or sheet of paper.
Cockling – Ripples or waves in a paper due to storing under conditions of unstable relative humidity.
Collate – To gather the sections of a book together ensuring that they are all present and are in the correct order. (Also know as gathering.)
Collating marks – Stepped marks printed on the spine of the section so that any miss-collated sections are immediately visible.
Crease – To mechanically press a rule into heavy paper or board to enable folding without cracking.
Drilling – Drilling of holes in folded sections, trimmed or untrimmed, or in finished books, which will permit insertion over rings or posts in a binder.
Edges – The three cut sides of a book-block.
Extent – The length of a book in terms of the number of pages.
Foredge – The outer edge of a book, opposite the spine.
Foot – The bottom edge of a book.
Gathering – To place the sections of a book in their correct order to make up a complete book. Also collecting together single sheets for mechanical binding.