The problem that pre-press output film must pay attention to

First, use more commonly used design and production software when making, such as pagemaker, etc., like words, etc. as much as possible.
Second, the pattern of the picture in the text must be CMYK mode, with an accuracy of at least 300*300 dpi/pixel/inch.
Third, check whether the text in the publication is a four-color word. If yes, change it to monochrome 100% black.
Fourth, if using pagemaker, WISE, Founder Edition, Illustrator, must link its picture file and the original file to be copied.
5. The photoshop file is preferably a psd (unconsolidated layer) file for easy modification.
Sixth, the font is best to use common fonts, such as Founder, Wending. Try not to use rare fonts. If you have used: CorelDraw and Illustrator first convert text to outline, you can avoid the problem that the output center can't output without such a font. If you have a make-up file, you must copy the make-up file.
7. Clearly report the finished product size, printing capacity, printing paper, etc. of the output center to facilitate the imposition and hanging nets.
Eight, if two pages are the same, but the black text is different (often encountered), then only the first page of CMYK four colors, and the second page of the K color can be, so as not to waste, but also save money. If there are only two colors (such as red and black) and the printing requirements are not high, it is only necessary to output them in one color version at the same time, and it does not need to be divided into two versions.