Advertising production: inkjet process knowledge quiz

Q: I'm going to do a 6m X 3m ad now. I would like to ask how to do such an ad in PS. How about the file settings (how many dpi, how many times do I want to shrink?) The contents of the advertisement include a background image, an icon, and two lines of text. What is the final output format? In addition to using CD to do such an advertisement, how to set up the document? Does the background image need to be imported into the CD after being loaded in the PS?

A: According to the actual size settings, 600 * 300CM, 35DPI on it, inkjet can be done in PHOTOSHOP, do not have to do in CORELDRAW. The pattern is CMYK, and the last figure made into a TIF or PSD is given to the inkjet company. Importing CORELDRAW will be very slow, so it is not recommended to import CORELDRAW.

Q: If you really want to do it on the CD, how do you set the size and resolution? What is the size and resolution of the background image imported at the same time using PS?

A: If the text is a bit 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, and when you export it as tif, Dpi set to the appropriate size!

You need to do it in CorelDRAW. Importing the bitmap resolution (resolution) depends on the accuracy of the inkjet device. If it is a 600DPI inkjet printer, the imported bitmap resolution (resolution) can be set to 150DPI. Making it in CorelDRAW is better, because the text is vector-free.

In fact, the inkjet printer is not set to 300 DPI after the printing accuracy is much higher, inkjet companies from an economic point of view, indoor photo paper, the highest will be sprayed to 300DPI on it, spray 600DPI on a waste of ink (inkjet printer can spray To 600DPI, some of them can even be sprayed to 1440DPI), so I generally do not recommend setting the resolution to more than 100DPI. Of course, if the file is very small, it doesn't matter if the setting is higher. Generally, it will not be obscured when 75DPI is sprayed. For inkjet Do not convert RGB mode to CMYK. Because the RGB color gamut is much larger than CMYK, the color is more vivid. Printing is due to no choice but to switch to CMYK mode. As for the image accuracy you can go to the output company to find out. Too much to do, he will give you smaller changes in order to reduce processing time.

This argument is not consistent with the fact that RGB color gamut is wider. Printing with ink as a color carrier cannot use it to reproduce the color of electronic documents. General inkjet printers or inkjet printers use CMYK and light blue and light products. Ink is used to reproduce colors. Although the six-color color gamut is not as wide as the RGB color gamut, it is always wider than the four colors. The color pictures used for printing are converted to CMYK in the software through a set of color parameters ( According to the characteristics of the printing ink, if the RGB image is used during the printing, it is converted into six colors of blue, yellow, black, light blue and light products in the process of embossing (printing) driving and printing (printing) machine ( That is, if you use software to map the RGB image to CMYK, one problem is that the color separation parameters do not match (ink is different from printing ink), and the next problem is that when you print, you need to turn four colors into six colors. There is also a big loss in the middle, so it is not as good as using RGB directly. Basically agree with your opinion. The internal working mode of the inkjet printer is still four-color mode. However, the reason for its wide color gamut is that the color purity and transparency of the inkjet ink are better than the printing ink; the second is that the color synthesis of the inkjet is the mixing of the ink and the printing is the overlay of the ink, so the color saturation is better than the printing. The use of light products and light greens is mainly to compensate for the defects of high light levels. We also use this six-color method in traditional printing. Japan Roland eight-color inkjet printer uses Panton six-color hi-fi technology, which is mainly bright green and bright orange color, so its color gamut is much larger than the general six-color inkjet printer, basically covers 90% of the Panton color area.

Q: Is it better to use RGB or CMYK?

A: If you use RGB to spray a perverted customer with a black and white Dongdong, the black will be obtained by superimposing RGB, how much humidity there is, and how much ink will be used, which is wasteful and difficult to do. After a week, there will be a oozing phenomenon. At that time, you will lose money. You cry no time. If I use the CMYK file, I only need one black, and I will not bleed and believe you. Can try it.

Q: An inkjet company, customers bring design drafts, as inkjet companies generally do those aspects of Photoshop adjustments. What should be noted.

A: Adjust the color so that the picture ejected by the inkjet printer meets the customer's requirements.

Q: As the operator of the inkjet company, what kind of work is generally done? The design has been completed by the customer. Is it just the client's file into the computer and then open and adjust in the PS, and then start the inkjet it? What kind of knowledge is also needed!

A: Sometimes the customer draft is very small, you need to enlarge it, adjust the color, deal with the defects of the screen, or sometimes the customer will give you the FAX new figure SIZE, you change the screen according to his SIZE.

Q: General inkjet is using Photoshop, Is there Illustrator or CorelDraw?

A: Yes, but you have to convert it to a bitmap (TIFF format).

Q: Generally, the size of inkjet printing is very large. How big is the setting when setting the image size in ps? How big is it to be sprayed? What the monitor sees! Is it 10:1?

In addition? Do you have to use CMYK for inkjet printing, isn't it better to use RGB if it is a printer?

A: This mainly depends on whether you are doing a photo or inkjet. It is generally the original large size. The resolution is 100 DPI. Printing is generally the original large-size resolution of 35dpi. You don't have to use RGB graphics, but you must turn it on when you are doing the drawing! ! ! ! ! Of course, if it is outdoor inkjet 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, and the resolution is about 100dpi. Of course, the higher the better. The HP5000 format is about 1.25 meters.

Q: If you paint dozens or dozens of square meters, as set in the ps, then the 17-19 monitor looks so big? I feel a little unintended?

A: This should be flexible. If that is the case, you should make it 1/10 or 1/5 of the original size. Is it ethical for us all to do? Try to give the customer some clarity. In short, the size of the file is generally maintained at about 50M to 100M (the resolution is maintained at 100ppi to 50ppi), and the size is large, the resolution is reduced, and vice versa. Be flexible! The normal dpi of the inkjet is 72dpi, some people say it is a golden dot, and then according to the figure, the dpi is generally set as the dpi is lower, but for the effect of the picture, the minimum is not less than 35dpi. The smaller the picture, the dpi is. High, especially with very little text. But the highest is not higher than 300dpi, thumb, 300dpi will not affect the speed of the computer, but enough!

Q: Where should I ask to ask about the overflow warning?

Answer: There is always a color gamut on 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 a photo?

A: Small-format indoor inkjet, such as the HP5000 mentioned above is a photo machine, and its width is 1. 5M, six-color ink head. The outdoor inkjet has 3-8m face width.

The printing accuracy is generally 100dip/inch, and the printing is 300dip/inch.

Q: Can jet printers spray without borders? It's like a ten-meter-wide outdoor ad.

A: This is to connect, is to put a few pieces of cloth together, then the hard-to-find
Q: When I was printing, I did C0M0YOK100 in CD, and the inkjet company wanted me to use C60M50Y60K100? Everyone is black. Why is it different?

A: This is because the black jets of inkjet printers generally have less ink, and the ink can easily block the nozzles. In order to not affect the effect, the inkjet company uses other colors to form black, so that the black part does not return to obvious roads. If the inkjet printer is a new nozzle, this setting is not needed, but the nozzle is blocked after 3 days. This is determined by the characteristics of the black solute in the black ink. The world has not yet solved this problem!

Q: What is adhesive, internal light, external light?

A: The back is covered with plastic film, like a self-adhesive; inside and outside the light, I do not know is not the same as the name is not the same everywhere; called matt film and film here, is the surface of the film is not the same as the media . The light inside and outside is used for the light cloth. The light cloth used inside the light box is called the light cloth inside. An opaque light cloth that uses a rack lamp to light from the outside is an interior light cloth. Extra-large inkjets are external light cloths, and small light boxes use internal light cloths. The two materials are very different.
Source: HC Network Printing Industry Channel