Prepress, printing , and postpress are three complementary processes. They are both dead and cold, and they are connected; they restrict each other and are related to each other; they are not only connected but also perfectly combined. The author will combine the actual situation of the unit, introduce and analyze the different requirements of the binding process on prepress production, so that we can consider more comprehensive in prepress design and production work, in order to achieve the perfect binding effect.
Binderless prepress design
Due to the technical characteristics of the wireless glue binding and the mechanical limitations of the commonly used models, the requirements of the binding method for prepress are analyzed as follows.
(1) Since the perfect binding process requires milling and backing, the book needs to add the backing dimension (usually 2mm) to the finished product size when the layout is designed, and the ring lining may not be milled. Set the mouth to indent the finished product size to 2mm. At this time, the size of the outer cutting mouth should be:
The size of the outer plastic trim is = (finished size - 2mm wide book block size)/2.
(2) Since the width of the cover lift line is generally 7mm, the left and right positions of the two seals (that is, page) and inserts should be reduced by 7mm at the mouth and then centered.
(3) For the glue-bound books that have a version in the text, the attached images and drawings should be overlapped by 2mm in the finished product size, plus a 2mm milling back, for a total of 4mm. Letters and seals of seals 2 or 3 and 2 or text are to be overlapped by 5mm in the finished product size to ensure that the book after the glued book is closed and full and accurate.
(4) According to the requirements of the product binding order, binding method and binding machine, the matching plate should be reasonably designed. The same book, if you need to arrange the size of the post printing, the thickness of the book's penultimate, four posts position arrangement of small post printing, two arrangements for large post printing, sticky pages of the post arrangement small post printing, this is conducive to mechanical waste and It is convenient to detect multiple posts and less posts in time.
(5) The cover should be at least 5mm longer than the length of the book block in order to prevent the cover from being short and the book block being long, causing dragging and sticking of the cover, which in turn causes a lot of downtime problems.
(6) Bleeding map to release 3mm cutting amount, so as not to cut the skew caused by dew edge.
(7) The twin product should set the cutting amount of the cutting head to 4mm, and the cutting amount of the upper and lower joints should be set to 10mm, the cutting amount of the non-standard head should be set to 3mm, and the amount of back milling should be 2mm.
(8) If a suit is required, it should be designed as a small post in a large post.
(9) At the time of imposition or production, a folding mark shall be placed on the outer folds of the head and the back of the book in order to check for multiple posts, less posts and wrong posts.
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