Folding method of signatures and other
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The order in which the signatures are folded is called the folding order. The folding of the signatures is to reduce the number of folding orders as much as possible, which is the principle of saving labor and time and facilitating printing.
The method of folding and folding of signatures generally has the following three rules:
1. Folding into odds: Where the odd-numbered rows or columns (note: we agree on the surface: horizontally called rows, vertical is called columns), the first folds are folded into overlapping even rows or The posts of the columns are then “overlapped” one or more times to form a signature. There are 3 pages of straight and horizontal, 5 pages of straight and horizontal, 6 pages of square, 6 pages of length, 9 pages of length, 10 pages of length, and 8 kinds of signatures of odd rows and columns.
2, overlapping folds: Where the signature consists of even rows or columns, the first fold is "overlapping fold", one or more corners and overlapping folds before they can become a signature. There are 2 pages of straight and horizontal, 4 pages of straight and horizontal, 4 pages of square, 8 pages of square, 8 pages of length, 16 pages of square, etc. 8 kinds of posts which are even rows and columns.
3. Fixed point of folding: Folding requirements: First, the page number and the page code word overlap and align, and the whole book line and the code pair code are overlapped, and the second is the straight book edge. In the inner edge of the plaza, the reference position of the signature is a uniform aligning face, which is the rule of the "fixed point of the folding" at the time of folding.
A hand-folded signature must not be a signature that can be folded after the signature is reversed, but the machine-folded signature is completed by mechanical action, so it is allowed to reverse the flip and then fold the signature.
In order to facilitate the binding processing, in addition to the horizontal type of signature, the two outer spaces (booking mouths) connected to the outermost layer of the signatures are stacked and overlapped among the other pages, so that the ropes can be fastened and bound into a booklet, such as straight The effect chart of the 3-page signature is shown in A.
This article introduces 16 kinds of typical signatures with universal significance, and conducts in-depth discussion and comprehensive introduction. The attributes of various signatures are described in Chapter 11 on the basis of hand-folded signatures. Machine folding posts.