Q : I'm working on the cover of the magazine, but I said I can't print it after finishing the printing. I think the resolution is too low. I used the default 72 DPI. Later, I didn't know. But what is the actual DPI?
A: scanning resolution (dpi) = number of lines (lpi) * magnification newspaper: 85lpi color magazine: 133,150 or 175lpi art album: 200lpi general book cover is set to 300-350dpi is enough ~ ~ should generally For practically twice the number of film lines, if the network cable is 150, that is 300. Therefore, if the production of TIFF, BMP format, then you can use 300 ~ 350 lines, if the grayscale map is generally used 1000 lines! !
Q: I'm directly importing the C100 M69 K56 in the PS palette and selecting the Pantone 655c to display two colors? What is the printing?
A: pantone 655c is a spot color, of course, and CMYK color difference, do not worry, when printing is no problem, spot colors will be very beautiful, and it is not clear that you "into" (placed?) CMYK color and PANTONE What is the relationship between color, PANTONE is a spot color, to produce a spot color film, not directly mixed in the CMYK file. The pantone palette is the ink supplier's color palette, which is a spot color, although some of them seem to be similar to the color of the ordinary printing, but actually used for printing is more expensive than the four-color composition! However, it is not recommended to change the pantone color to cmyk, the color will change, and the effect will be worse!
Q: What is a reversal film?
A: A reversal film is a kind of photographic film that can be directly obtained by reverse washing after shooting. The black-and-white reversal film can directly obtain the transparent film whose image is dark and the object is the same; the color reversal film can directly obtain the same transparent film whose color is the same as the object, and the color thereof is true and bright, but the latitude is small. Since the reversal film is used for printing plates or slides because of its high quality and positive effect, most professional photographers use color reversal films for shooting advertising photos.
Q : When you convert RGB to CMYK, you can see the difference in color between photoshop and acdsee. After printing, where does the color come from?
A: Actually, if you print, look at the color values ​​of CMYK and don't be too superstitious about the colors on the screen. Unless you use a better professional video card, the best way is to look at the value of the chromatograms. Sensitive to such a later words to see the value of a few! ! !
Q: It is the magazine text, text, and pictures that are light blue, as if the paper is also light blue, but it is by no means a color print. It is a bit like black and white, but what is the reason?
A: Like the red in a newspaper ad, the magazine has a blue print that must have been printed. If there is a pure white color on the blue background (in fact it is not the color above, it is not a dot when the brush is used). The blue color is definitely printed, otherwise it may be printed on the background color paper, because it is impossible to print the white color on the colored paper. Select the blue part to save it as a spot color channel and print it out separately. After printing the four colors, you can print the blue one more time, but this will require higher or even more ugly machines and technologies! ! ! There are two other methods; Blue Shop 2. With special paper, this method I encountered many times, many companies printed samples in order to show strength, hesitate to use the money, and use colored paper or even art paper to print.
Q: How many DPIs are required for monochrome printed images?
A: If the monochrome format is BITMAP, it is recommended to use at least 1000 DPI. If it is gray, 300 is enough.
Q: My friend's factory recently printed a number of film films from Japan (taken from Japan)! It's so clear. Whether the color or the resolution is really good, I would like to ask how to make a good film and print!
A: This is a multifaceted factor. The source of the material must be as high as a reversal film, and electronic color separation should be used. Then the design should be fixed. Then the highest number of output lines is 200~300. ! Then use Heidelberg! In addition, the purity of color cannot be ignored during the production process. The basis of the Little Japan is very solid. In 1991, they saw their hand-made black ink and the master craftsman's skill. Whether it is the composition of white latex or the description of the manual font. The most admirable thing is that there are no traces of manuscripts. In addition to a little bit of value paper and white paper is a bit uneven, the entire screen is very clean. About still lies in the manuscript. Most of our customers now only provide extended prints as originals. The resolution of this manuscript itself is also about 250dpi, and most of the enlarged prints have problems with the color gradation. It is generally advisable to use negative film (ie, negative film) directly as a scanning document in foreign countries, with a resolution of approximately 2500 dpi. After all, professional shooting reversal film is very rare. Of course, they use a special type of negative scanner instead of a roller scanner. This scanner is characterized by the ability to automatically color, scanning is also very convenient, as long as the use of film clip, the film can be inserted into the film clip insert. This scanner Kodak and Zhongjing have.
Q: Can you talk about the output of prepress production? Answer:
The font used in the file, confirm the output center, or need to carry. • When storing graphics, check whether the color mode is CMYK mode to avoid color deviation.
Check the link file before output, and change the link information in time if there is any change.
Images with a large amount of graphics are stored in the EPS format, and the Include halftone and Include... options are not included in the storage options. If they are placed in PageMaker, they should be cropped and rotated before being placed.
If the graphic is in TIFF format, delete unnecessary channels and paths before storage. It is recommended not to save the LZW compression format.
The TIFF format with a large amount of graphics is placed in the PAGEMAKER layout file, which is prone to tensile deformation and should be stored in EPS or DCS format. ? PC version Pageaker 6.5C Chinese font download, easy to lose words, symbols take place, big characters with teeth. Inserting EPS file in PageMaker is easy to lose after rotation. Please rotate and insert PageMaker software.
Don't use bold and underline effects for Chinese characters in PageMaker. When entering text into the PC, PageMaker should delete the space, otherwise it will be garbled. There is a problem with the version of the PC font library. After the substitution, it is easy to produce text moves and loses. Please indicate the output center, the font version number used.
PageMaker's trapping options need to be used with caution. Please see the preview effect. • Fonts in CoreIDraw 8.0 cannot use Chinese fonts in the Windows system, such as Arial, Blackbody, and Carcass, and do not print file information when printing. 46 versions of the Chinese text of the four treasures of the text output, the word will appear before the symbol. CORELDRA's PSD format image output speed is very slow, in some versions with a channel or rotation will cause image defects, should be converted to a bitmap.
Do not use paragraph text in CORELDRAW. Please change to art text or to a curve.
In CORELDRAW, you can use the shading and pattern provided with the software to fill in the graphics, or as a base map; use Note:
1, choose the appropriate precision, usually 1.5-2.0 times the number of output lines, if the accuracy is too low will affect the accuracy of the map, too high will affect the output speed.
2. The selected basemap should pay attention to whether its attribute is CMYK mode. Generally, the basemap shading filled is RGB mode, which should be changed to four-color mode.
When using CORELDRAW version, in order to improve the speed (output) if the file is relatively large, the version of the graphics is more, it is best to combine several small version of the bottom map into one, reduce the amount of information in the file, increase the output speed, Note that text should not be converted to bitmaps (especially small words). If characters are converted to bitmaps, the accuracy of the text will be affected.
ILLUSTRATOR, FREEHAND, white fills and lines, check the OVERPRINT option in the property to avoid loss. The spot color gradient in the ILLUSTRATOR file should be noted during color separation interpretation. • If you are using EPS DCS 1.0 2.0 format or PS IMAGE format, please prompt the output center.
Gradient processing does not work well in desktop systems. It is best to add 3-4 noise points to PHOTOSHOP's filters during production.
Please pay attention to the following when using the Founder WITS typesetting software: There are several fonts in the WITS's own font that cannot be distributed in the output center: Coarse Song Amber 2 Extra thick Black Zhongyuan Caiyun Han Jian Song Sixin Newspaper Song Ping Black Skinny Gold Yellow Grass length 牟 1 日 日 日 日 日 日 日 日 在 在 在 在 在 在 在 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出 输出
Such as using CoreIDraw, Freehand, ILLUSTRATOR and other vector graphics editing software, fonts, such as no special effects processing, it is recommended to turn into a curve or path, this can guarantee the foolproof font. (Note: If you convert to a path or curve, it may cause aliasing on the screen, but it does not affect the output.)