Explain the ills of common software, output traps and output techniques
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"Quality is the life of the company!" Prepress is the lifeblood of the quality of the printing house! As the output in the prepress, it is the "prepress" of "prepress"! If you can't turn off the good output quality, the entire output center or printing house has no place to stand! Below I combine my own output work practice, talk about the common software ills, output traps and output skills, due to space limitations, only one or two software can be selected as a representative, I hope everyone can do it through my own vision learn by analogy!
First, Pagemaker's common ills and treatment methods
Chinese characters are difficult to align in Pagemaker: within the same paragraph of text, there are "address: phone: zip code:" and other content requires the first and last words and colon alignment. The same number of words with the same font size and the same font will not be the same! I had to adjust it by adjusting the kerning. It can be dealt with temporarily, but once the content is rotated, the old problem is again committed. In contrast, Wisdom and Feiteng have done a lot better (I usually use Ctrl+Shift+M or TAB to deal with it, but I can't do it into several blocks and manually align it).
The automatically generated page number, once imposition... The best function of Pagemaker is not the production, but its powerful typesetting and imposition function. For example, use it to arrange more than 100 pages of books, pictures and texts, free to place text blocks, WYSIWYG... It's really convenient, and can automatically generate page numbers: enter the main page (that is, the leftmost scroll bar is written with R) And the two pages of L), type Ctrl+Shift+3 where you need to add the page number, and the page number of each page is automatically generated! Don't be happy early, once you ask for imposition output (that is, two pages or four pages into one page), how can the page number not move? I have to slowly add one page at a time. My experience is: If you want to make an imposition, it is best to add the page number manually, and you don't need to add the page automatically when you don't need imposition.
If there is no alignment page, page over right, bottom right, etc. If you place an image, about one-third of the layout size, you need to place the page absolutely in the middle. If you use Coreldraw, Ctrl+A, you can do it in Pagemaker. What should I do? Honestly calculate it: the size of the heart is subtracted from the size of the image, then divide 2, then... pull a reference line out and finally align. The content is less okay, but there are more pictures? (I usually draw a block of text, the length of the plate is flush, put the picture into the block of text, and then choose to center. Although the problem is solved, but always feels awkward, not so easy).
The reference line cannot manually give coordinate parameters. Sometimes it is necessary to draw a reference line at a certain coordinate point. It is very simple. With a mouse pull, the reference line will come out, and it will be placed in the desired position... It will take half a day to align. However, if you encounter a mouse that is not very sensitive, it will be troublesome. I don't know how to solve it! Had to wait for Adobe to rewrite the software!
Can't scale or enlarge the page content, etc. Use Coreldraw or Illustrator to do a thing. The text and text are mixed. There are more pictures and texts in one page. The text is mostly picture description or annotation. It can also be done with Pagemaker, and because the file is small, the operation is faster than the above two software. In case you need to reduce the overall content of the layout to the original 90%, group it in Coreldraw or Illustrator, and then use the selection ratio, OK! Pageamker also selects the group, then chooses the ratio... Wait a minute, the picture class is all right, how the text will not shrink, but the text box is reduced, and the text position is messy... (My experience is: I have to zoom in RIP) proportion)
Second, the common trap in the output
Because there were too many traps in the output process, we had to be extra careful and fell into the trap of the computer with little attention. Here are the traps I often encounter at work:
RGB image not converted to CMYK
Consequences: Most software (such as FreeHand, PageMaker, etc.) does not separate RGB images. If the RGB image is misused, the resulting color separation film has a picture only on the black plate, some of the other color version images are blank, or there are equivalent grayscale images on the four color plates. Solution: Don't forget to convert RGB to CMYK before output. Tip: It is difficult to see whether it is RGB or CMYK from the file name or file icon. It is too much trouble to open one by one. For the TIFF map, it can be seen through the link information. As for the EPS map, it can only be checked one by one.
FreeHand fonts use Heavy (weighted), PageMaker fonts use Bold (bold)
Consequences: If the Chinese font in FreeHand uses Heavy, most of the cases will be ambiguous; and in Chinese in PageMaker, Bold will be a superfluous word with teeth. Other font effects in PageMaker will also be problematic. Solution: Try to avoid the above effects. If the font needs to be bold, you should use the corresponding bold Chinese characters, such as the choice of bold or big black body. If there is no corresponding bold type, you can use Fill and Stroke in FreeHand.
FreeHand uses wrong Fill and Stroke (fill and word edges)
Consequences: Fill and Stroke can be used to make the font bold, or you can make the words have different color edges. However, improper use can result in a paste, or the word side is too thick, and the color of the word itself is squeezed out. Solution: 3% principle (the original font size is multiplied by 3%). If the font itself is in bold, the ratio should be smaller.
Wrong JPEG compression format
Consequences: There are images on the screen, and the images are missing after output. Solution: In PhotoShop software, re-save it in TIFF or EPS format and return to vagemaker to reconnect.
Large picture is reduced to a small circle
Consequence: The time that affects the output. Solution: The zooming chart in the typesetting software is very convenient, but the cost is double or several times the output time, so be sure to set the size and resolution in the image processing software (such as Photoshop), and then set the typesetting software.
Segment head space, table space
Consequences: The text or form that looks very good on the screen becomes uneven. Solution: If you use PageMaker or QuarkXPress, the software itself has very good indentation positioning function, you can make a very professional and very neat form. As for the section header, it should be set in the layout.
Borrow DCS format
Consequences: Different situations have different consequences. 1. The black and white print has a picture, but there is no picture on the output film; 2. Black and white pictures are printed in color; 3. Although the color print is a color map, it is very rough. Solution: The reason for l is that there is only the main file but no color separation file when outputting; 2 is because the main file only contains the gray image of the low resolution; 3 is because the main file contains the color image of the low resolution . Tip: Don't use the DCS format unless you have a good reason or a good understanding of DCS.
"Pattern" is incorrectly used in FreeHand
Consequences: FreeHand has a pattern fill that fills a regular pattern within a certain graphic range. This type of pattern is dot matrix. The Level l RIP imagesetters that were equipped earlier do not support this filled output, and the Levell 11 imagesetter can output. But one thing to note is that you can't set colors outside of the field for it. If you try to set a C10%Y10% light color, although there is a display on the screen, but the output must be 100% dark green CY! Solution: Unless you don't need it.
Jump Words - There are two main reasons for jumping characters when outputting: one is to re-adjust the position of the word after changing the font, and the other is to have a space between the word and the word. The only way to do this is to re-adjust the position of the word after changing the font. In the latter case, there are two ways to solve it: one is to divide the word into two parts and set it according to the original position; The solution is to use the True Type font. After determining the position of the word and the image, the word should be Outline, but it should be noted that the space between the words must be an English space, otherwise the empty position will appear after the Outline. mouth".
Bottom black and white picture
It's a problem to save the image as a TIFF in Grayscale mode in Photoshop and then put it into Freehand. If you select a black overprint, if there is a color block or other basemap under Grayscale, its white part will become a color block or The reason for this problem in the corresponding part of the base map is that the default fill color of Freehand's Grayscale map placed in Photoshop is K100. When black overprint is selected, the white part is considered to be zero CMYK, which naturally reveals its color. The color of the version, for this case, there are two ways to solve: First, in Photoshop, turn Grayscle into CMYK, Select all in the CMYK Total Channel of the Channel dialog, copy to Channel Black, and then delete C, M, Y three channels in the image; the other way is to change the Grayscale map fill color to Y1, K100 in Freehand, so there will be no problem when selecting black overprint.
Output low precision map
Pagenaker puts in the map and asks if you include this graph or not. In the case that the picture is a color-removed EPS image, it is only a file header, its interpretation is very low, and its megabyte is less than the threshold of PageMaker. PageMaker automatically includes this file header, and no longer links the remaining DCS. The color file will be a low-precision image when output. Similarly, the diagrams contained in the PageMaker file are modified in other software. PageMaker does not re-link, and the old ones that have not been modified are still available.
Third, the output skills
Graphics created in Illustrator cannot be directly output in four colors. When placed in Freehand output, it often disappears after the output of small or reverse white graphics. You should select Freehand format when saving in Illustrator and open it directly in Freehand. Made with Freehand, use less font effects from Inline, Outline, and Pattern to avoid complex images that affect output quality.
When Freehand outputs the EPS map to the PageMaker file, do not use the Join Element. Otherwise, there will always be problems when outputting, and the EPS line drawing placed by PageMaker cannot be automatically overprinted when outputting. It should be overprinted on other software. Only after the output.
Freehand has a ladder when making gradient output. For better output, you need to set the high resolution in the page setup before making it. In addition, it is recommended to use Photoshop or Illustrator to make the gradient. Illustrator can easily make colorful. Multiple gradients.
CorelDraw is the most used typesetting software for users on a PC. In order to get the best film or proof in the shortest time, please do not use RGB color to fill the color block or line during the production process; the number of nodes after the curve is controlled within 1500 points; The graphics file should use PSD format as little as possible; the spot color can be used in Pantone special color, and the Pantone printing color is not available.
Fourth, before the pre-press output, you must pay attention to the following issues:
According to the different software produced, the corresponding print output method is selected. The color picture (TIFF) mode must be CMYK mode with a minimum accuracy of 300*300dPi/pixel/inch. Check that the text in the publication is a four-color black text, and if so, change it to monochrome 100% black.
If you use Pagemaker, Weiss, Founder Edition, Illustrator, you must copy the link image file and the original file. PhotoShop files preferably have PSD files for easy modification.
Fonts are best used in common fonts, such as Founder and Wending. Try not to use rare fonts. If you have used it, Coreldraw and Illustrator first convert the text to the outline mode, which avoids the problem that the output center cannot be output without such font. If there is a supplementary word file, the supplementary word file must be copied together.
Find out the finished product size, printing paper, etc., to facilitate imposition, hanging the net and add corresponding marking information.
As long as we make full use of the strengths of each software and learn from each other's strengths, we can overcome the defects of each software itself. At the same time, we must master more output skills to escape traps and eliminate any small mistakes. The process of handing over one piece of qualified product provides a prerequisite for print quality!