RGB vs. CYMK on a std pc printer

Is there any advantage of one over the other on a basic pc printer, when color seps aren't involved?

From: "TooSano"

Is there any advantage of one over the other on a basic pc printer, when color seps aren't involved?

If you mean the Epson - Canon - HP type consumer inkjets, then they are expecting a RGB file, which their driver converts to CMYK. If you give them a CMYK input it will get translated to RGB and then back to CMYK, which is not what you want to happen.

Really?! That goes for all consumer bubble/inkjets?!

"Bill Hilton" wrote in message

From: "TooSano"

Is there any advantage of one over the other on a basic pc printer, when color seps aren't involved?

If you mean the Epson - Canon - HP type consumer inkjets, then they are expecting a RGB file, which their driver converts to CMYK. If you give

them a

CMYK input it will get translated to RGB and then back to CMYK, which is

not

what you want to happen.

Tiemen Rapati wrote:

Really?! That goes for all consumer bubble/inkjets?!

Yup, and your colors are getting really ugly I found out myself three years ago :-(

Waldo

If you mean the Epson - Canon - HP type consumer inkjets, then they are expecting a RGB file, which their driver converts to CMYK.

From: "Tiemen Rapati"

Really?! That goes for all consumer bubble/inkjets?!

That's what the Epsons do, the ones I'm most familar with, even the Professional models like the 4000, 7600 and 9600. I doubt most users of these printers would know how to generate accurate CMYK colors so I'd be surprised to learn that there are inkjets that don't do this for you, but I guess it's possible. The guy *did* ask about "a basic PC printer" ...

Thanks for the info, I found out by accidentally printing from cymk and it didn't look too good!

"Bill Hilton" wrote in message

From: "TooSano"

Is there any advantage of one over the other on a basic pc printer, when color seps aren't involved?

If you mean the Epson - Canon - HP type consumer inkjets, then they are expecting a RGB file, which their driver converts to CMYK. If you give

them a

CMYK input it will get translated to RGB and then back to CMYK, which is

not

what you want to happen.

TooSano wrote:

Is there any advantage of one over the other on a basic pc printer, when color seps aren't involved?

Yes. You MUST use RGB, because the drivers are based on RGB input. AFAIK there is no 'basic PC printer' that requires CMYK input or can even handle CMYK input properly (except with special drivers and/or RIP software). If you do convert to CMYK, the printerdriver will convert it back to RGB first and then convert to its own CMYK (or CcMmYK) again. The result is horrible.

--
Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl/

Is there any advantage of one over the other on a basic pc printer, when color seps aren't involved?

No.

Consumer-grade printers print CMYK (or CcMmYK), but it's not the same CMYK as commercial offset printing presses use. The cyan in particular is bluer than offset CMYK.

The software that drives consumer inkjet printers expects RGB data. If you send a CMYK image to a consumer printer, the driver software will convert the image to RGB, then back to the printer's own variety of CMYK. This typically produces inferior results to simply using RGB in the first place.

--
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Ummm, our Pro7600 does accept CMYK - and our pair of 10000's...

n8

That's what the Epsons do, the ones I'm most familar with, even the Professional models like the 4000, 7600 and 9600. I doubt most users of

these

printers would know how to generate accurate CMYK colors so I'd be

surprised to

learn that there are inkjets that don't do this for you, but I guess it's possible. The guy *did* ask about "a basic PC printer" ...

n8 skow wrote:

Ummm, our Pro7600 does accept CMYK - and our pair of 10000's...

Sure, it 'accepts' CMYK. But the results are not good if you do that with the standard Epson driver.

--
Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl/

Running Fiery ColorWise Pro Tools here...
Do people actually 'use' the standard drivers???

=)
Sorry - I shoulda stated I was using RIP in my post...

n8

Sure, it 'accepts' CMYK. But the results are not good if you do that with the standard Epson driver.

--
Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl/

From: "n8 skow"

Sorry - I shoulda stated I was using RIP in my post...

Yah, that's DEFINITELY what a 'standard PC printer' uses :)

lol - I just can't imagine dropping $3-4k on a printer for home use - let alone without a good RIP...

=)
n8

Yah, that's DEFINITELY what a 'standard PC printer' uses :)