The principal folds are the parallel (or buckle) and right angle, with the latter being the most commonly used fold in bookwork. The parallel fold is generally used for very narrow books, or for those that are printed TWO UP .
The third most commonly used fold, though used far less than either of the preceding, is the concertina fold, which is used for maps and folders, as well as for some book sections.
Almost all folding today is done by machine; however, in the early days of the folding machine, the work was so inaccurate that good folding could be done only by hand.
Folding is done "to the paper" or "to the print," i.e., register. See also: FOLD TO PAPER ;FOLD TO PRINT ;FOLDING MACHINES ;IMPOSITION ;REGISTER (4) .
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Timestamp: Saturday, 19-Nov-2011 13:18:41 PST
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