Basic knowledge of pre printing 6

Basic knowledge of prepress production (VI)

4. Color conversion -- before sending the file to output, convert the RGB color into CMYK. Of course, RGB color looks very good on the screen, and many professionals prefer to use RGB mode, but do you know? What will these RGB images look like after color separation or printing (many typesetting software can't even separate RGB images in the past). Before putting the images into the typesetting software or sending them to the output center, first convert them into CMYK format (in Photoshop or other software that can do this conversion). Make sure that a spot color is not designated as a spot color, or vice versa. Such a mistake may destroy a piece of film. If your time is precious and you spend your own money on film, you certainly don't want it. Make sure that the color you define in the typesetting software is the same name as that used in the image processing software. Otherwise, the typesetting software will process the color separation defined in illustrator and freehand into spot colors. Now, QuarkXPress and PageMaker can recognize this color and add the color name contained in any EPS file placed in it to the color list. Therefore, the danger is not too great, but I still mention it to you here

5. Use numbers -- now each typesetting software provides two methods to determine the size and position of page elements. One method is the perceptual method of clicking and dragging the mouse, and the other is the objective method of inputting numbers from various dialog boxes and control panels. To make sure that the width of a box is exactly one and a half inches, the only correct way is to enter 1.5 in the width column, rather than using eyes or aligning reference lines and dimensions

6. Set the typesetting page to the actual size -- in the previous unsatisfactory days, the prepress workstation and imagesetter could not record the bleeding part beyond the page range. If you want to get the correct bleeding, you have to change the page size in the typesetting software to adjust the actual page size and bleeding. This must have a larger page size, so that the cutting line can be drawn and placed manually, which is easy to make mistakes. Today's prepress equipment is no longer hindered by these restrictions (the current imagesetter can record a larger format and use a wider film). Most printing devices recommend setting the file size to the actual size of the page, so that the application software can automatically generate the correctly positioned cutting line

7. Organize your files -- Talking about this may be redundant for the veteran, but it has to be stronger for the novice. In addition to bringing all the image files used in the file, you should also bring the dot matrix word (screen display) and outline word (printer uses the following relevant standards:) of postsript word used in the file to the output center. At present, most typesetting software is similar to the command of collecting and outputting files of QuarkXPress, which can get a detailed report about files and automatically copy files to a folder, floppy disk or syquest disk. If the output center has a high configuration, they must have Adobe word library, so you don't need to bring the words with you

8. Check the documents -- what can be done and what can't be done are mentioned in steps 4 and 7. Are you confused? In fact, it is a very simple inspection. The check should include: check every missing page element, the color that is not correctly defined, and the postsrip error. The inspection tools are simple like lepton technology's documentdoctor prepared for QuarkXPress or adobe's checklist prepared for PageMaker, and complex like systems of merritt's lasercheck or acquired knowledge's dowmload mechanical. Panther proof or adobe prep when the design structure is enough to put into the computer host and the display device, print Pro can perform screen preview of low resolution output, so that you can check and solve common postscript errors before output. Huayan proofing software has a powerful function to finally check whether the document is wrong

9. Printing documents -- proofing output documents should be marked with color separation. If you can't find a color printer around, the color marking method used in the past is very useful. It is also very useful for hollowing out and overprint

10. Contact the output center -- not at the end of the workflow -- at the beginning. It describes how the polymer was inspired by the adhesion of mussel rib, and the problem can be avoided. Don't think that documents that look good on the MAC screen must meet the requirements of the output center, and they will be good after printing. Be sure to find out the resolution (lines per inch), ink and paper used in printing. Then set the corresponding number of lines in the application software. When you issue negative films, you should explain it to the output personnel, otherwise the output personnel will issue positive films for you as usual. Time is precious to every publisher. Did the above 10 tips of printing experts save you some time? I hope that the above 10 introductions can bring you some enlightenment. The original output is not terrible

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