Not all postpressers can control the numbers Finishing printed products. Only master the rich numbers Printing knowledge , understanding the special characteristics of digital prints, and a variety of post- press processing equipment, with strong production and processing capabilities and rich post- press processing experience, digital prints will not be difficult to post- press processing. In short, the following aspects should be noted in the post-press processing of digital prints.
1. Consider post-press processing from prepress design
In digital printing, the quality of prepress design has a great impact on postpress processing. Therefore, when prepress design of digital prints, the postpress processing should be considered.
(1) Paper thread direction
Digital printing paper has a small format, limited specifications, and a large number of printed materials are single-sided printing. In addition to requiring pre-press design to make the most efficient use of paper, the direction of the paper should also be considered. When possible, try to make the direction of the silk of the paper coincide with the direction of the back of the finished book. Since the digitally printed ink and toner adhere only to the surface of the paper, if the sheet is folded in the direction of the cross thread, the image is liable to break at the fold.
(2) Image position on the printed sheet
Often, many digital prints design images in the middle of a sheet, but when printed and post-press processed, it is found that doing so wastes a lot of time and money. For example, designing an image of 6 inches by 9 inches in the middle of a sheet of 8.5 inches by 11 inches, you need to cut the four sides of the sheet when cutting; but if you place the image in a certain At the corner, only two sides need to be cut, which saves the post-press processing time and reduces the printing cost. However, if the other two sides of the image are bleeding designs, you will still need to crop all four sides of the sheet.
(3) Consider post-press processing
When digital printing is designed in prepress, it is also necessary to consider what kind of finishing process is used. For example, if the wireless binding process is adopted, the following two items should be noted: 1 Due to the particularity of the digital printing process, the toner on the surface of the printed matter may affect the adhesion of the hot melt adhesive. Therefore, it is recommended that the design of the spine is 1 cm in the periphery; 2 wireless The flatness of the glue book is poor. Especially when using high-quantity paper, it is not easy to flip through the book after binding. Please pay attention to setting the core size so as not to affect the normal reading. If the punching process is used, since the drill pin will generate heat when punching, it is easy to cause the digital printed image toner to melt, so it is best to avoid designing images and text at the drilling position.
2. Post-press processing points
Only by carefully designing and arranging the work pieces from the beginning can we ensure the harmony between printing and post-press processing. In digital post-press processing, the following points should be noted.
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