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4 Color Black/Grey Text--Offset Printing

Explorer ,
Dec 04, 2019 Dec 04, 2019

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Hi everyone,

 

I've always wondered why printers are so adament about black/grey text being only comprised of K. I mean I completely understand the reasoning behind it (registration) but do the same perils not apply to colored text? For example, green text. 

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LEGEND ,
Dec 04, 2019 Dec 04, 2019

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Yes, the same perils apply to coloured text. However, if they were to enforce a rule to limit coloured text to one plate, you'd only have a choice of four colours for text, and that would be limiting. Printers know that the great bulk of body text and all small text will be in black. If you typeset very small text in colour, you can expect it to be unreadable. This is a particular problem with CD case designs.

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Explorer ,
Dec 04, 2019 Dec 04, 2019

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Thanks for the reply. I just wanted to make sure I wasn't crazy haha. Would you say registration is one advantage of using a digital printer vs offset printing? 

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Community Expert ,
Mar 11, 2020 Mar 11, 2020

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Registration is not the only reason but it is a big one.  Black text with any color out of register no longer appears totally black, wherewith colored type there is less of a visual change because the colored type is usually lighter.  The other more important reason is that large areas od 4 solid colors (large black type areas) can cause trapping issues.  Ink is made to stick to paper, and it does that well.  Ink trapping is how much ink sticks to the previous solid color in the laydown order.  Some presses run Yellow down first and black last. if black doesn't trap well to three solid ink areas then what was meant to look black might very well print brown.   

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