How much knowledge of inkjet process knows
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Q: I am going to make a 6m X3m advertisement. I would like to ask how to make such an advertisement in PS, how to set the file (how many dpi, how many times to shrink, etc.)? The content in the advertisement includes a background image, an icon, and two lines of text. What format is the final output? In addition, use CD to do such an advertisement, how to set up the file? Is the background image to be imported into the CD after a large percentage of the PS?
A: According to the actual size setting, 600*300CM, 35DPI can be used, inkjet printing can be done in PHOTOSHOP, do not have to do it in CORELDRAW. The pattern is CMYK, and the final TIF map or PSD map is handed over to the inkjet company. Importing CORELDRAW will be slow, so it is not recommended to import CORELDRAW.
Q: If you really want to do it on a CD, how do you set its size and resolution? What is the size and resolution of the imported background image with PS?
A: If the text is a little more, and the picture is relatively simple, it can be done on the CD. How big is it? I personally think that if you do it in cd, the DPI in PS can be higher. When you export it to tif, then Dpi is set to the corresponding size!
You have to do it in CorelDRAW. The resolution (resolution) of the imported bitmap depends on the accuracy of the inkjet device. If it is 600DPI, the resolution (resolution) of the imported bitmap can be set to 150DPI. It's better to make it in CorelDRAW, because the text is not jagged.
In fact, the inkjet printer is not much more accurate when you set it to 300DPI. The inkjet company considers the economical point of view. The indoor photo paper can be sprayed to 300DPI at the highest level. The ink is sprayed at 600DPI (the inkjet printer can spray To 600DPI, some can even be sprayed to 1440DPI), so I generally don't recommend setting the resolution to above 100DPI. Of course, if the file is small, it doesn't matter if it is set higher. Generally, it will not be blurred when it is sprayed around 75DPI. For inkjet printing, do not convert RGB mode to CMYK. Because the RGB color gamut is much larger than CMYK, the color is more vivid. Printing was due to helplessness and turned into CMYK mode. As for image accuracy, you can go to the output company to find out. Too much to do, he will give you a small change in order to reduce processing time.
This kind of statement does not agree, the RGB color gamut is wider, and the ink color carrier can not be used to reproduce the color of electronic documents. The general inkjet printer or inkjet printer uses CMYK and light blue and light goods. Color ink to reproduce color, although the color gamut of six colors is not as wide as RGB gamut, but it is much wider than four colors. The color picture for printing is converted into CMYK in software by a set of color parameters ( According to the characteristics of printing ink, if RGB image is used in inkjet printing, it is converted into cyan, magenta, black, black, light cyan and light six colors in the program embedded in the printing (printing) drive and inkjet (printing) machine ( That is, the color separation process), if you use software to convert the RGB image to CMYK, one problem is that the color separation parameters do not match (ink is different from the printing ink), and another problem is to change the four colors to six colors when printing. There is also a big loss in the middle, so it is better to use RGB spray directly. Basically agree with your opinion. The internal working mode of the inkjet printer is still in four colors. However, the reason why the color gamut is relatively wide is that the color purity and transparency of the ink for printing are better than that of the printing ink; the second is that the color synthesis of the inkjet is the mixing of the ink and the printing is the superposition of the ink, so that the color saturation is better than the printing. As for the use of light goods and light blue, it is mainly to make up for the defects of high light level. We also use this six-color method in traditional printing. Japan's Roland eight-color inkjet printer uses Panton six-color high-fidelity technology, which is mainly bright green and bright orange, so its color gamut is much larger than the average six-color inkjet printer, basically covering 90% of Panton color. area.
Q: So is it better to use RGB or CMYK?
A: If you use RGB to spray a black-and-white white character to an abnormal customer, the black color will be obtained by superimposing RGB. How much humidity is used, how much ink is used, which is wasteful, difficult to dry, and hurts the nozzle. After a week, there will be a phenomenon of bleeding, when you are told to lose money, you have no time to cry, if I use CMYK files, only use a black, and never bleed, do not believe you Can try.
Q: An inkjet company, the customer will bring the design draft, as the inkjet company, this aspect of the photoshop generally needs to be adjusted. What are the places to pay attention to.
A: Adjust the color so that the image sprayed by the inkjet printer meets the customer's requirements.
Q: As an operator of the inkjet company, what kind of work is generally required. The design has been completed by the customer. Is it just to put the customer's file into the computer and then open and adjust it in the PS, then start the inkjet? What kind of knowledge is needed?
A: Sometimes the customer design draft is very small, you need to enlarge it, adjust the color, deal with the defects of the picture, or sometimes the customer will give you the SIZE of the new FAX picture, you change the picture according to the SIZE he wants.
Q: Generally, inkjet is used in Photoshop. Is there any use of Illustrator or CorelDraw?
A: Yes, but you have to convert it to a bitmap (TIFF format).
Q: Generally, the size of the inkjet is very large. How big is the setting when setting the image size in ps? Wouldn't it be how big the spray is? What does the monitor see? Is it 10:1? Also? Is it better to use CMYK for inkjet printing? Is it better to use RGB if it is like a printer?
A: This mainly depends on whether you are doing photo or inkjet. If you write the truth, it is usually the original size, and the resolution is 100DPI. Inkjet painting is generally the original large size resolution of 35dpi. You don't have to use RGB graphics, but you must open the [overflow warning] when you are drawing! ! ! ! ! Of course, if it is outdoor printing or RGB mode is better, because the inkjet printer uses ink instead of printing ink, its color hiding is not as strong as printing. If it is a photo machine, its size is preferably the original size, the resolution is about 100dpi, of course, the higher the better. The HP5000 format is about 1.25 meters.
Q: If the inkjet is dozens or tens of square meters, if it is set to the original size in ps, then the 17-19 monitor looks so big? I think it is a little unbelievable?
A: This should be flexible. If that is the case, it should be made 1/10 or 1/5. What should we do with professional ethics? Try to be as clear as possible for the customer. In short, the size of the file is generally maintained at 50M to 100M (the resolution is maintained at 100ppi to 50ppi), the size is large, the resolution is reduced, and vice versa. Be flexible! The normal dpi of inkjet printing is 72dpi. Some people say that it is a golden dot. Then, according to the small size of the map, the dpi is generally the larger the dpi is, but for the effect of the image, the minimum is not lower than 35dpi. The smaller the image, the more dpi High, especially with very small text. But the highest is not higher than 300dpi, small picture, 300dpi will not affect the speed of the computer, and enough!
Q: Where can I open the [Color Warning]?
A: There is always a color gamut in each machine. If it exceeds this color gamut, it will overflow. For example, the general photo machine K100 is always dark gray.
Q: What is photo?
A: The small-faced indoor inkjet, such as the HP5000 mentioned above, is a photo machine, and its width is 1. 5M, six-color ink head. The outdoor printing has a face width of 3-8m.
The accuracy of inkjet printing is generally 100dip/inch, and printing is up to 300dip/inch.
Q: Can the inkjet printer spray out borderless? Just like a dozen meters wide outdoor advertising.
A: This is to connect, it is to connect a few pieces of cloth together, it is not easy to see it.
Q: When I was painting, I did C0M0YOK100 on the CD. Does the inkjet company want me to use C60M50Y60K100? Everyone is black, why is the effect different?
A: This is because the black nozzle of the inkjet printer generally has a small amount of ink, and the ink is easy to block the nozzle. In order not to affect the effect, the inkjet company uses other colors to form black, so that the black part does not return obvious roads (crossing). If the inkjet printer is a new nozzle, this setup is not needed, but the nozzle will be blocked after 3 days. This is determined by the characteristics of the black solute in black ink. So far, the world has not solved this problem!
Q: What is adhesive, what is internal light, external light?
A: The back cover film, like self-adhesive; the internal light, I don't know if it is different from everywhere; in our case, it is called matt film and bright film, the medium of surface film is different. . The external light is for the light cloth, and the light-transmitting light cloth using the inner light box is called the inner light cloth. An opaque lamp cloth that is lighted from the outside using a frame light is an interior light cloth. The ultra-large inkjets are all exterior light cloths, and the small light boxes are made of interior light cloths. The two materials are very different.