Printing paper is the unit for calculating the length of a publication. Specify that one printing surface of the whole paper is a printed page. It contains 16 or 32 pages. Because folio (Half Full Open Paper) printing machine is widely used in the printing market, it is also called folio double-sided printed sheet. Folio is a printing plate used for printing the format size of a folio press. Before the publication is printed, the film is spliced into the original version of the printing plate size of the printing machine, and then dried on the folio (PS version). The number of folio pages in a book will directly affect the printing cost-if the author modifies three pages and they fall on different plates, the cost of reprinting is three folio pages; If luck falls on 1 page, then the cost of reprinting is 1 page.

From the above concept, you have to look at the format (how big the book is) first. Calculate the "version" again. There is a difference between the version usually mentioned here and the printed version.

Commonly used full-open paper formats and specifications: 787 * 1092mm, 787 * 980mm, 850 * 1 168mm, etc.

Layout is the size of the book layout. Cut the whole paper into small pieces of the same size, and you will say more and less. For example, after the whole paper is folded in half four times, its format is116 of the whole paper, so the format size is called16 format. The following are the actual dimensions of each format: 16 format: 185× 260mm format: 16 format: 2 10× 297mm format: 18 format (international format:185 At present, the commonly used English computer books are all large and small. Taiwan Province computer books began to adopt this size in large quantities around 1995. 32 carats:130×185 mm; 32 carats:140× 203mm.