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Subject: RE: [Homebrew_PCBs] Forcing printing of Magenta or Cyan from RGB in Windows

From: "Boman33" <boman33@...>
Date: 2011-10-07

Thanks Andy,
The printer I have, Canon i9100, uses CMYK cartridges so it can print in
pure CMYK colors. I should have included that info from the beginning.
The printer drivers in Windows does the magic of going from RGB to the CMYK.
I like to be able to force the printer to use a pure CMYK of my choice.
Presumably I need to either fool the Windows drivers some way or use some
other driver that allows independent control.
Bertho

-----Original Message-----
From: Andrew Thornber Sent: Friday, October 07, 2011 12:08
Hi,
Basically you can't really! They are completely different colour spaces.
At home we print/scan/view on our montiors using RGB (Red, Green, Blue).
In commercial printing they use CMYK (Cyan, Magenta, Yellow, Black(K)).
You might be able to get close to pure Cyan or Magenta with the RBG inks.
For a full description try here:
http://en.wikipedia.org/wiki/CMYK#Comparison_with_RGB_displays

Personally if you need to print CMYK then have a look at photo printers as
they print in the CMYK space. (It's oldish but to prove a point have a look
at the Epson C82)
Hope this helps...
Kind regards,
Andy