The general imported CDs are PSD and TIF maps, except that PSD files of unconsolidated layers can be identified by attributes after import, other (1) merged PSDs, (2) unmerged TIFs, (3) ) The three images of the merged TIF file cannot be distinguished after the CD has been imported.
Imported PSD maps, if they are rotated, mirrored, changed in size, or tilted in the CD, are easily broken when they are ejected. Therefore, if you import a picture from a CD, the rotation will take place. It's best to make sure it's a bitmap. Accurate cropping of the bitmap in the frame is also to pay attention to the above issues, but also pay attention to whether the frame and the picture is locked, if not, please lock.
Through the above analysis can be summarized before the image processing method is as follows, a total of 5 points:
A. Images and shadowed images need to be converted to bitmaps only after the rotation, mirroring, and tilting actions are applied;
B. The resolution of the attribute information requires a bitmap in the picture with different values;
C. The picture in the precise crop frame needs to be turned into a bitmap if it is rotated or the resolution is different;
D. RGB diagram In addition to the above-mentioned case of transposing the picture, you can directly transfer to CMYK mode (do not turn the RGB plot all together, because there may be pictures on a layer, some strange problems may occur after conversion)
E. The image with the filter must be converted to a bitmap (Note: The change of the original image after the conversion is too large)
F. Regarding masks, be careful when using them in coreldraw. If necessary, use the “place container†method to be more secure.
(2) Graphics
The problem of graphics is relatively small. The most important issue is the transparency problem. Images with transparent effects are prone to problems when they are released. Therefore, it is better to turn a bitmap into a transparent image. But sometimes, when there are thousands of pictures in a file with transparency effects, it is best to select a few representative graphics and turn them into bitmaps to see if there are no major changes in the graphics, such as the transfer of pictures. After losing something, you can just don't switch to common sense.
If the graphics use other effects, you can ignore them. (3) Problems with text
There are many questions about text:
A. Art characters, to be turned into curves.
B. Try not to use fonts with GB2312. After these fonts are converted to curves, there will be obvious hollowness where the strokes cross. The above situation can also occur in the case of Fang Zhengmei’s blackout curve.
C. The system may falsely report missing fonts, but if the file is opened, if the save button is grayed out, it means that the font is not bad (if it isn't, then it's time to honestly reload the font).
D. When the font changes to crash, it means that there is artwork in the precise crop box. Be careful.
E. Paragraph text, should pay attention to whether the text inside the text box is not all displayed (it is easy to neglect)
F. The next is the most troublesome problem. When the text content is combed in, it is the space typed in the full-width state. Then you will find that the input text has not been printed yet. At this time, please open the file carefully and search for it using the search art word. You will find that there is a place to display the search for the art word, but it looks like a row of small hollow dots. This is the problem that the fonts appearing in the space entered in the full-width state disappear. The only solution is to use the Chinese and English fonts to see what the original word is, and then restore the text. If there are no characters displayed when using Chinese and English fonts, it means there are only spaces and no words. Point DEL to delete that body library description method is different, the overlap of the stroke overlap will be out of stack, be careful!
H. Paragraph texts containing special characters in Chinese and English are prone to problems such as "■, @, ★, ○" and so on.
I. Use the new standard GBK font to solve the problem of remote word loss.
J. Stroke too thin font, it is best not to use more than three colors of aliasing, such as (C10M30Y80) and so on, the same reason, does not apply to dark-colored anti-white characters. In case of avoiding the situation, it is necessary to mark the reversed white character, apply the background color, or print a single color (usually black K).
K. The object selected 'overprinting' will be imprinted. Font effect processing method
A. Using a zipper, the word of the envelope is ignored and the curve is changed directly.
B. Contour word, after all the fonts and outlines are separated together, the font changes to curve.
C. The three-dimensional words are also separated after selection, and the font changes to the curve. Note that the following three-dimensional image is preferably an index image.
D. Shadowed words. If the font rotates, please select it and separate it. The font will change to the curve, and the shadow will not change the bitmap.
E. Transparency word, you can not switch, (want to pursue high standards, then transpose it, safety first) (4) the treatment of the angle line:
A. The corner cannot exceed 1.2 mm.
B. Drawings with spot colors Note Use imposition logo lines.
C. If a 4-color version has a black corner, use C100M100Y100K100 instead.
D. A monochromatic version of the corner line uses the monochrome corner.
E. A 2-color (CY) version, his corner is Green, because the corner setting should be C100Y100=Green.
F. Remember that there are several colored corners to use. (5) Other places that should be noted:
A.4 color words: The use of C100M100Y100K100, the intention is to want to bold characters, but if this is set, although the display is also black, but after each film has a character, there will be printing overprint Happening.
B. Self-provided corner line: To get the output device to have a corner line, the length and width set in the print page must be 10-15 mm larger than the length and width of the file page setting.
C. Locking problem: Sometimes, the person who made the picture locked a figure in the figure. Because you usually have to select all the photos before checking them, then Ctrl+G is selected as the center. If the graphic is locked, it won't be moved. All the pictures must be checked before they are checked.
D. Print lock: You may encounter a situation, when you want to convert a picture to a bitmap, a prompt box (objects on the non-printable layer can not be converted into a bitmap), this time to call out "Object manager" to unlock the print.
E. Two monochrome editions should be labeled as two PS postings.
F. Gradient problem: 1 The common problem is this: If the red → black gradient, set the wrong: (M100 → K100) will be hard to see in the middle! The correct setting should be like this: (M100→M100K100) After careful analysis, you will understand, and other situations will be analogized.
2 transparent gradient, is suitable for network graphics methods, grayscale can also be, but the final draft output can not be, because of its spatial mixing mode is RGB, screen mixing color with printing CMYK too much difference, pay attention.
3 Black has a black overprint option. Substitutions of less than 10% black are usually used instead of overprinting. This causes problems. Also, use pure light black.
G. Resolution and re-sampling: Do not do this in corel, "conversion to bitmap" is indeed convenient, but the loss is color reproduction, to professional point, in the ps to get it.
H. Prepress Inspection: Use PDF files for prepress inspection! Pay attention not to print a pdf directly using coredraw! The order is this: *.cdr → The output is "Encapsulated EPS, ie *.EPS", and then Acrobat Distiller generates EPS *.pdf.
Reprinted from: Digital Printing