The painted images are often very large, and it should be understood that "deep in Lushan does not know the true face of Lushan". That's the case with inkjet graphics. If the big screen still uses the printed resolution, then the computer will be exhausted. However, there is no standard requirement for the resolution of the spray image, and the resolution used when using different sizes can refer to the following values:
Image area (square meters) 180——infinite 30 --- 180 1——30
Resolution (dpi) 11.25 22.5
Note: Because most current inkjet printers use 11.25DPI, 22.5DPI, and 45DPI as the image requirements for output, reasonable use of image resolution can speed up the speed of drawing.
The general situation of the photo requires 72DPI / inch. If the image is too large (such as the file size exceeds 400M when the new image is displayed in PHOTOSHOP), you can appropriately reduce the resolution and control it within 400M.
Image mode requirements:
CMKY mode is uniformly used for inkjet printing, and RGB mode is prohibited. The current inkjet printers are all four-color inkjets, and their colors are very different from the printing colors. Of course, when drawing, the printing standards will be followed. The inkjet company will adjust the color of the screen to be close to the sample.
The photo can use CMKY mode or RGB mode. Note that the value of red in RGB is defined by CMKY, that is, M = 100 Y = 100.
The black part of the image requires:
It is strictly forbidden to have a single black value in the inkjet and photo images. It must be filled with C, M, and Y colors to form a mixed black. If it is big black, it can be made as follows: C = 50 M = 50 Y = 50 K = 100. Especially when using the effects brought by PHOTOSHOP, pay attention to changing the black part to four-color black, otherwise there will be horizontal lines on the black part of the screen, affecting the overall effect.
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