Inkjet: Points to note when creating and exporting images

1, size:

The size of the spray image is the same as the actual required screen size. Unlike printing, it does not require bleeding. After the inkjet company has left blank edges after outputting the screen, the general situation is to leave 10CM at the edge of the net screen. As shown in the picture, you can negotiate with the inkjet output company and leave the number of sides to use to make the buttonhole. The price is calculated per square meter, so the screen size is in centimeters.

2, image resolution requirements:

Inkjet images are often very large, and it should be understood that "deep in Sheshan does not know what it is." The same is true for the spray painting. If the big screen still uses the resolution of the print, it would be exhausting the computer. However, there are no standard requirements for spray image filtering. The following are the resolutions I use when using different sizes. You can refer to:

Image area (m2): 180 - infinite 30---180 1 - 30

Resolution (dpi): 11.25 22.5 45

Explanation: Because the current inkjet printers mostly require 11.25 DPI, 22.5 DPI, and 45 DPI for the output image, rational use of the image resolution can speed up the drawing process.

The general situation of the photo requires 72DPI inches, if the image is too large (such as when the PHOTOSHOP new image shows the actual size when the file size exceeds 400M), the resolution can be properly reduced, and the control can be within 400M.

3, image mode requirements:

Inkjet uses the CMKY mode in a unified manner, and the use of the RGB mode is prohibited. Today's inkjet printers are all four-color inkjet printers, and their color is very different from the color of the printer. Of course, when printing, the printer will follow the printing standards. The inkjet company will adjust the screen color and the sample size. Photo can use CMKY mode or RGB mode. Note that the red value in RGB is defined by CMKY, ie M=100 Y=100.

4, the black part of the image requirements:

Single black values ​​are strictly forbidden in inkjet and pictorial images, and C, M, and Y colors must be added to form a mixed black. If it is big black, it can be made: C=50 M=50 Y=50 K=100. Especially when using the effects it brings in PHOTOSHOP, pay attention to changing the black part to four-color black, otherwise the black part will have crossbar on the screen, which will affect the overall effect.

5, image storage requirements:

The inkjet and photo-realistic images are best stored in TIF format, but note that the compressed format is not available.

The number of points depends on the circumstances. General inkjet 30dpi, 72dpi general photo, if the screen is large, can be reduced accordingly. The minimum number of points I have made is 10dpi, 300 square. If you are too big, you can do it in several sections. The photo is generally no less than 50dpi. With regard to the small number of points, the picture will not be blurred, but will produce strong jaggies. On the contrary, if you increase the number of points and enlarge the picture, it will become blurred, and the sawtooth will be less obvious. If you do it in general, you can think twice about it.

Regarding the compression format, the general inkjet company requirements are in tiff, cmyk format. Its practical jpg is not a bad idea, but the compression ratio must be higher than 8, otherwise the picture quality is not guaranteed. If the original image is small, blurring may be increased in an appropriate amount.

25-30 points is enough to spray our company is Israel's Sagittarius, and the United States Wit the last point of the inkjet printer is 23.125 (Witter's). When you make a big point in the picture when the machine will also To reduce the number of points. Mapping is best to use CMYK because of inkjet and RGB display there are still differences. We are not the first to the customer to see the sample before the map spray it? If the customer accepts the sample with CMYK, it will be no problem if it is sprayed out. The machine is 3.2 meters. I have done the minimum 13.3 resolution. 330 square meters. Leave 5 cm white cloth. Most of my installations use 30mm or 25mm square tubes, which should be fine. I think the colors of RGB should not be CMYK accurate. I use RGB only for my photo.

Zoom in on the PS to 100% (actual output size), see if your font is jagged, and if the background is too flat, others will read it based on your own experience. Actually, the background is not too important. Text should not be serrated with 100% display. By the way, some fonts are magnified after zooming in, and other similar fonts are better.