Need to pay attention to the use of CorelDraw prepress output
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First, the image processing in CorelDraw (CD)
Generally, the PSD and TIF maps are imported into the CD. Except for the PSD files of the uncombined layers, they can be identified by the attributes after importing. Others (1) already merged PSD, (2) uncombined TIF, (3) The three maps of the merged TIF files cannot be distinguished after importing the CD.
If the imported PSD map is rotated, mirrored, resized, tilted, etc. in the CD, it is easy to break when the film is released. Therefore, if the image is imported into the CD, if it is rotated, etc. It is the most insurance to transfer the map. To accurately crop the bitmap in the image frame, pay attention to the above problem, and also pay attention to whether the frame and the image are locked. If not, please lock it.
Through the above analysis, the processing methods before the image is released can be summarized as follows: 5 points:
1. Pictures and shaded pictures need to be converted to bitmaps only after a rotation, mirroring or tilting action has been applied;
2. In the attribute information, the resolution of two pictures with different values needs to be indexed;
3. If the image in the precise cropping frame is rotated or the resolution is different, it needs to be converted into a bitmap;
4, RGB map In addition to the above situation, the transfer map, directly to CMYK mode (do not turn the RGB map all together, because there may be pictures on a layer, there may be some strange problems after conversion)
5. The image using the filter needs to be converted into a bitmap (note: whether the change of the original image after conversion is too large)
Second, the graphics:
The problem of graphics is relatively small. The most important one is the transparency problem. The graphics with transparent effect are easy to have problems when the film is produced. Therefore, it is better to convert the graphics with transparency effect into bitmaps. But sometimes, when there are thousands of images in a file with transparency effect, it is best to select a few representative graphics to turn into bitmaps, if the graphics do not show big changes, such as After losing things and so on, you can try not to turn.
The graphics use other effects, you can ignore them.
Third, the problem of fonts is more,
1, the art word, to be converted into a curve.
2, try not to use the font with GB2312, after the conversion of these fonts into a curve, there will be obvious hollowing out where the strokes intersect. The above situation will also occur in the square of the square.
3, the system sometimes falsely reports missing fonts, but if you open the file, if the save button is grayed out, it means that the font is not bad (if not, the old and honest fonts will be restarted)
4, When the font turns to the curve, it will crash, indicating that there is an art text in the precise cropping box.
5. Paragraph text. It should be noted that the text in the text box is not fully displayed (it is easy to neglect)
6, the next is the most troublesome problem, please open your eyes. The text content is a space typed in the full-width state when inputting. Then you will find that the text you entered is gone after the film is released. At this time, please open the file carefully and search for it by looking up the art word. You will find that there is a place to display the search for the art word, but all are a row of small hollow points. . This is the problem that the font that appears in the space that is typed in the full-angle state disappears. Then the only solution is to look at the original words in Chinese and English fonts, and then restore the text. If you use Chinese and English fonts to see no words, it means there are only spaces, no words, then Click DEL to delete it.
How to handle font effects
1, with a zipper, the words of the envelope are ignored, directly turn the curve.
2, contour word, can be selected after the full selection of fonts and contours, font curve
3, the three-dimensional word is also selected after separation, font to curve, pay attention to the back of the three-dimensional map is best to rotate the map
4, Words with shadows. If the font is rotated, please select it and separate it. The font will turn to the curve, and the shadow will not be rotated.
5, transparent words, you can not turn. (If you want to pursue high standards, then turn the map to be safe first.)
Fourth, the processing of the corner:
1, the angle can not exceed 1 2 mm
2, there is a map of the spot color, please use the imposition mark line
3, a 4-color version if the corner is Black, then please change to C100M100Y100K100
4, a monochrome version of the corner line with the monochrome angle
5, a 2-color (CY) version, his corner is Green, because the corner setting should be C100Y00=Green
6, remember to use a few colors of the color line with a few colors.
Other places to pay attention to:
4 color words: the words used in C100M100Y100K100, the intention is to want black characters, but if you set this, although the display is also black, but there are words on each film after the film, there will be printing overprinting is not allowed Happening.
Self-contained corner: In order to make the output device self-belt, the length and width set in the printed page must be 10-15mm or more larger than the length and width of the file page.
Locking problem: Sometimes, the person making the picture locks a line in the picture. Because you usually select all the pictures before checking the picture, then Ctrl+G is all selected to be centered. If the graphic is locked, it will not be moved, so check the image to be locked before checking the image.
Locking: You may encounter a situation where when you want to convert a graph into a bitmap, a prompt box pops up (the object on the unprintable layer cannot be converted into a bitmap), then you need to call up the object management. "to cancel the print lock.
Two monochrome versions are to be labeled as two PS rows.
Fifth, the printer settings are very important, directly related to the quality of the last film, you can refer to the following graphical operation to set:
The most commonly used file when checking files is "file information" (ctrl+f+m)