How to convert 4-color image to Black (CMYK) | Channel Mixer in Photoshop

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Here's how you can turn a colorful image to a black & white image for offset printing where you'll need only pure BLACK channel to make a plate for printing.

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Brilliant thank you>>

Helped me with a client's work...

Vhusi
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not all heroes wear capes but i feel like you could pull one off

bemi
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Interesting. I have to check these setting out. Why not just change color mode to grayscale?

nickstocker
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I want to ask about color settings in Photoshop....so how do I set the color to get black when printing banners, while my black printhead on the machine is not working or has been damaged, so how do I set it up in Photoshop?🙏

aprilhulu
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I'm creating a barcode for a book cover and the offset printer is requiring only the barcode be in black channel...can I apply the black channel to JUST the barcode on the book cover?

thetributary