Book printing open knowledge
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In the printing of books and other publications, we will come into contact with a term called “open.” In the printing industry, opening numbers is the most basic term, so we don’t know what is open and will not be able to understand many things. What is the demand? Next we introduce the open book printing knowledge. The corporate album printing machinery is mainly opened by a printing plate device. With the same number of open books, the format of the books is basically the same, but the height (length) and width of the books may not be the same. For the same 16 books, the vertical height is 26 cm, the width is 18,6 cm, and the horizontal height is 18.3 cm and width 26.3 cm. Inside and outside the book are different, from the layout, printing to the middle of the binding process is different. Size copy. With the same number of open books, the book's breadth is different. If it is also 32, it has an area of 13,4 cm x 13 cm; 18.4 cm x 14 cm; 20.3 cm x 14 cm. Carefully read the copyright of the book, which reads "7 Liver × 1Dg2/32", "787 × 1168/32", and "850 × 1168/32". This indicates 32 different sizes of paper. The name of the Shanghai business card printing base paper is not the same, and of course the same area will be the same. At present, the most commonly used paper for book and book printing is 87 mm x l092 mm and wrist o mm x 1168 mm. The former is universal, so the former is a general specification paper, and the latter is called a large specification paper. Books printed on large-size paper are marked "big" by the size of the original book, and are distinguished from ordinary paper books. 1s. 4 cm x 13 cm is an ordinary 32-page book, 20.3 cm x 14 cm is a large 32-page book, and open is divided into positive and negative open-ended copies.
Positive partial open this. A half-open sheet of paper that is geometrically graded is a positive copy. The paper is opened, called f, 8 open, 16 open, 128 open, etc. are open paper (see Figure 3-5). Some paper-opening methods are not always open to half-opening, such as 3 open, 5 open, 7 open, 11 open, 13 open and so on. Party chiefs The same books and books were printed with different lengths and widths, some were longer, and some were made of wood, fish, and stones. The g4D for different cms of the nose crystal was 10.3 cm x 18.6 cm and 14. There are 17.2 cm x 9.2 cm and 13 cm x 12.2 cm in the 8 x 13 cm I48. These three types of opening do not have the same specifications as the rectangle on the front side and the square on the back side.