RGB to be saved as 2 color separated

RG
Posted By
Ryan_Galloway
May 21, 2004
Views
278
Replies
1
Status
Closed
I was requested for our company logo by a printing firm, but on sending it they said it was 4 color and that it needs to be 2 color.

I asked what they meant and the woman told me it must be saved in photoshop as 2 colour separated.

Can anyone please explain to me what this means and possibly the steps I need to do this

thanks

Ryan
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GS
Gustavo_Sanchez
May 21, 2004
Ryan,

You likely made a CMYK logotype in Photoshop (right?). Perhaps you thought you did it correctly because you ‘choosed’ pantone colours from the colour picker. That’s a not uncommon mistake (ie: Pantone colours ‘choosed from the colour picker’ are not spot inks).

So, what your printers are saying is that it was due to print with only two inks in some special colour (let’s say a shade of pink and another of blue, just for the fancy of it). They cannot print with two inks your CMYK logo, because its colours are compounded by four inks. You have to rebuild your file so that it has only two inks.

Depending on the exact nature and colours of your logo, a good way could be (working with a copy of the file!): Open the file, go to the channels’ palette and discard those two channels that contain the less information. You do that by clicking each channel to be discarded and dragging it into the little trash bin present in the channels’ palette.

Then, you click twice each of the two surviving channels and assign to it a spot ink (the ones your printer told you).

Save the file as an EPS DCS 2.0 (Multiple file colour composite, ASCII would be a good option).

There are other ways and it might not be the best one. In case of doubt, you should ponder rebuilding the file in something like Illustrator. Conventional wisdom says that vector files (Illustrator, Freehand, Corel…) are recommended over raster files (tiff, bmp…) to make logos I agree with CW, btw ;).

But that’s is another tale.

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