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Below I will briefly introduce some simple requirements for making and outputting images in inkjet and photo.
1, size:
The size of the spray image is the same as the actual size of the image. It is different from printing and does not require a bleeding portion. In the inkjet company, there is usually a white border after the output screen, and the general situation is to leave 10CM at the edge of the net screen. As you can agree with the inkjet output company, how many edges are left for buttonholes. The price is calculated per square meter, so the screen size is in centimeters.
2, image resolution requirements:
The image of the inkjet is often very large, and the same is true for the inkjet image. If the large image also uses the resolution of the print, it will be exhausting the computer. However, there is no standard requirement for the resolution of the spray image. The following are the resolutions that I use when I use different sizes. I can refer to:
Image area (m2) 180 - infinity 30---180 1 - 30
Resolution (dpi) 11.25 22.5 45
Note: Because the current inkjet printers mostly require 11.25DPI, 22.5DPI, and 45DPI as the output image, the reasonable use of image resolution can speed up the drawing speed.
The general situation requires 72DPI/inch. If the image is too large (such as the file size exceeds 400M when the new image is displayed in PHOTOSHOP), the resolution can be appropriately lowered and the control can be within 400M.
3, image mode requirements:
The CMKY mode is used uniformly for inkjet printing, and the RGB mode is prohibited. The current inkjet printers are all four-color inkjet printing. Its color is completely different from the printing color. Of course, when printing, according to the printing standard, the inkjet company will adjust the color of the screen and the sample close.
The photo can be in CMKY mode or RGB mode. Note that the value of red in RGB is defined by CMKY, ie M=100 Y=100. [next]
4, the black part of the image requires:
It is strictly forbidden to have a single black value in both inkjet and photo images. 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 effect with PHOTOSHOP, pay attention to changing the black part to four-color black, otherwise there will be a cross section on the screen, which will affect the overall effect.
5, image storage requirements:
Inkjet and photo images are best stored in TIF format, but note that compressed formats are not available.
Regarding the number of points, depending on the situation. Printing is generally 30dpi, and the photo is generally 72dpi. If the picture is large, it can be reduced accordingly. The smallest point I have ever done is 10dpi, 300 square. If you are older, you can do it in several paragraphs. The photo is usually no less than 50dpi. Regarding the small number of points, the picture will not be blurred, but will produce strong jaggedness. On the contrary, if the number of points is increased, if the picture is enlarged, it will become blurred, and the sawtooth will be less noticeable. If you do it, you can do it yourself.
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