Ellie Kennard wrote:

> I have it from somewhere- I'm not sure on what authority- that we
> shouldn't send CMYK files to our inkjet printers. I understand that
> the printers take the file, change it back into RGB, then convert it
> back again into CMYK. This might mess with the colour, I understand.

It's not that simple...

You can send CMYK data to a desktop inkjet printer... the question is will
it reproduce the data accurately?

True, the print driver will reinterpret the CMYK data on the way to the
printer but the results depend on your printer's profile and the intent that
you select when printing.

Most desktop inkjet printers are designed for the mass market. The mass
market tend to have RGB digital cameras and want to print their pictures
from them. It is therefore no surprise that most desktop inkjet printer
drivers are optimised to expect RGB data.

By printing from a CMYK image file you are limiting the range (aka gamut) of
colours that your image can contain. Both Adobe RGB1998 and your printer
have larger and brighter gamut's than a CMYK file.

So you can proof the CMYK file on your printer, but you will never achieve
the full range of colours that a transparency or an Adobe RGB 1998 image
might achieve. It all depends on what you're trying to do.

No sure that that helps...

Michael

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