Simulated process color tu income processes with basic color dots (CMYK / W) on the intensity and a certain size (example of clay on the results printout dye base ink printer) is often called halftoning.
To screen printing inks typically use a more dilute and transparent, in a half-dry conditions, and the size of the density screen printing (silkscreen) 45 LPI. LPI lho ... not DPI, because the unit halftone screen using Line Per Inch.
Many are providing services to the film screening repro with certain software, but actually we can do all that with photoshop.
Materials that need to be prepared:
1. Image size is large enough
klo or graphic image is downloaded to change the resolution from 72dpi first (screen) to 300dpi. This is absolutely done. (menu image> imege size> to change the resolution to be 300)
2. Change the CMYK color mode (image> mode> CMYK)
3. select the menu window> channels
then the channel will masing2 plasticity colors (Cyan, Magenta, Yellow, Black)
4. There downward arrows on the window channels on the scroll bar, click and select split channels
Each channel will be separated into individual images with gray mode.
5. prepare basic colors.
background color to white then this step is passed it.
5.1 For the basic color is black or darkblue black channels are not needed, instead we have to make the white color. (hence its image took just klo pake black or darkblue hold put on the new canvas item or darkblue color). black channel in-invert (menu image> adjustment> invert color). the end result of this film will be used for white, not black.
6. Perform halftoning with a certain angle for each channel. This is absolute because it will not be formed klo moiré pattern, which means that each color other colors stacked so that the desired color will not even appear.
halftoning performed on each channel,
6.1 select the menu image> mode> bitmap.
6.2 set the resolution to be 300dpi or larger (eg 600)
6.3 in halftone screen method and then select OK
Then set the frequency 6.4 to 45lpi for screen printing t-shirts and 65lpi (or greater) to offset
Change shape into 6.5 Ellipse or diamonds (for screen printing t-shirts) or round (for offset).
6.6 These rules for angle of tiap2 channel:
-> 6.6.1 to offset: C: 105 M: 75 Y: 90 K: 45
-> 6.6.2 for silk screening: C: 15 M: 45 Y: 75 K: 75
jadi deh ...
live in-print on the transparency pake laser or inkjet printer (inkjet pake special transparency). Do pake tracing because the exposure is less comprehensive when afdruk screen. Guaranteed. Klo gak believe, tu fashion changed again to be CMYK, change the color of items each channel to its original color. tumpukin right into a field with transparency multiply. Tu clay just for the final result. Klo pengen more confident more ... yes dipraktekin to silkscreen on disablon. inget, the ink must be transparent, and half-dry conditions, keep the first dominant color disablon ... eg red, meaning that disablon white / black (cos this basic colors) override pake magenta, yellow pake override, override new cyan (usually easy stencil artisans understand).
ps:
-For a graphic image or just a white item (grayscale) mode change so stay n grayscale 300dpi resolution. Continue to change so bitmap halftone screen or a diamond shape and angle Ellipse 45. To invert the color black base color are also mandatory.
Background-color commonly used for this process is white, black, and darkblue. Brown, dark purple, abu2 also be entered.
black or white can be eliminated klo emang gak needed
Hopefully helpful.
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