Overprint: when multi-color printing is required, it is required to overlap the set of patterns;

Trap: refers to a color block and another color block to have a certain cross overlay, to avoid the printing of the white side, so also called to cover the white; Two kinds of color transition place when do trap may have a deviation in the printing, produce white or color mixing, trap is the place where the handover with the transition of two kinds of color interpenetrate, won't produce white lace.

Embossing and overprinting is an idea that a color block is superimposed on another color block. However, when printing, you should pay special attention to the overprint of black text on color images. Do not hollow out the design of the black text, or the black text will appear when the printing overprint is not allowed.

Example: four P 16 open, generous, made of PS, text with K100, sent to the distribution center of black no embossing, is also the location of the black on the other color version is hollow out, cause misregister and thief, text dieyin black in the PS is black text layer, the layer mode to multiply, so, in a place like other color black text version is not hollow out, thus, also won't appear thief. Just coming into the printing industry and love to use PS design friend, you must be aware of this problem. Don't outside, must develop PS do reproduction, the good habit of CD or AI type. The printed text will not have burrs.

The black in general CD and PM is the default impression.

1. Do all bitmaps have to be duplicated or stuck? Because some customers directly give us bitmap (some bitmap is quite complex), output proofing, also do not find out what color is inaccurate.

Answer: do not use ~~~ overprint in certain circumstance as long as K100 black or graph can.

2. How thick can the line overprint be to cover the color and print? Is a little (0.01 mm) enough? How much does it take to convert to pt?

Answer: extremely fine line ~~ also is 0.2 point. 1 pt = 0.35146 mm

3. Do they work on CDS and ILL, and do they work the same? It seems to me that the lines in ILL are half as thick as lines, aren't they? What about in the CD?

A: no.

Is it safer to overprint in ILL than CD?

A: do it the normal way. Software is just a tool, not good or safer.

5. Spot color overlay, spot color and black, specially, black, is it with line overprint? Spot color and black, special, black, do you use pad printing? If you want to prevent the occurrence of "two kinds of black" causing the abnormal pattern, can you only use line overprint? Or is there another way? Or is it possible to set the right color without overprinting? Is the spot color transparent? That spot color can't and spot color to fill the overprint, can only use line to overprint?

A: the lines are relatively better.

Assume some kind of overprint.

Hypothesis in ILL, a pattern, and the middle is red filling, green contour line, is green under filling pattern that can do line dieyin (use same layer as the red green contour line, and the green under the filling, dieyin)?

A: no superimposition. Normal output is ok.

7. If only CMYK, pattern is similar to the color insert in the "cartoon king", or like the cartoon, Tom and jerry cartoon characters are black lines hook again, used to indicate the outline of them. Do you want to overprint the complicated picture? It's hard to imagine a color block, a color block for overprinting. Right? ! If you don't overprint, how do those anime magazines come out?

Answer: still that sentence, normally only black do overprint, other color normal output.

8. If someone give me the drawings on the black outline is made of the method of "black" leakage, (such as a piece of red and green patches to sew, sew here is a piece of black), such as sketches are, "can only yourself to hang up again and again to make dieyin", that is too sad

A: under the seam is a black overprint.

In fact, overprint is very simple, remember a bit: normally only black word or black graph do overprint processing, other colors default normal output ~.

If it is like millions of a Heidelberg printing car, just doesn't exist dieyin problems, but according to its national conditions, now a lot of printing factory is not so good equipment, so there are printing CheYin prohibit to superimpose phenomenon.

In overprint, it is usually done by experience. The large area of filling strokes should be a little thicker, 0.1~0.2mm is suitable, and small area filling strokes should be relatively small. When the pen is folded, you can look at it with a magnifying glass and sometimes you can see that it's dark. There's no way to do it.