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RGB Driven Color Printers?

RGB Driven Color Printers?

2006-04-11 by hanson102

The box of the Print Fix Pro Suite says that it works with any RGB
driven Color Printer.  What does this exactly mean?  Printers are CMYK
inks.  This confuses me.

Any inputs?

Thanks!

Re: [colorvision_group] RGB Driven Color Printers?

2006-04-11 by Howard

All inkjet consumer printers are designed to take RGB output from the 
computer and convert it internally to CMYK data before printing. 
Although I've never tried it they apparently perform very poorly if fed 
computer output in CMYK format.

Howard

hanson102 wrote:
Show quoted textHide quoted text
> The box of the Print Fix Pro Suite says that it works with any RGB
> driven Color Printer.  What does this exactly mean?  Printers are CMYK
> inks.  This confuses me.
>
> Any inputs?
>
> Thanks!
>
>
>
>
>
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Re: RGB Driven Color Printers?

2006-04-11 by hanson102

does this mean that the printfix pro suite won't work with printers
that accept cmyk output?



--- In colorvision_group@yahoogroups.com, Howard <home@...> wrote:
>
> All inkjet consumer printers are designed to take RGB output from the 
> computer and convert it internally to CMYK data before printing. 
> Although I've never tried it they apparently perform very poorly if fed 
> computer output in CMYK format.
> 
> Howard
> 
> hanson102 wrote:
> 
> > The box of the Print Fix Pro Suite says that it works with any RGB
> > driven Color Printer.  What does this exactly mean?  Printers are CMYK
> > inks.  This confuses me.
> >
> > Any inputs?
> >
> > Thanks!
> >
> >
> >
> >
> >
> >
------------------------------------------------------------------------
> > YAHOO! GROUPS LINKS
> >
> >     *  Visit your group "colorvision_group
> >       <http://groups.yahoo.com/group/colorvision_group>" on the web.
> >        
> >     *  To unsubscribe from this group, send an email to:
> >        colorvision_group-unsubscribe@yahoogroups.com
> >      
<mailto:colorvision_group-unsubscribe@yahoogroups.com?subject=Unsubscribe>
> >        
> >     *  Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> >       Service <http://docs.yahoo.com/info/terms/>.
> >
> >
> >
------------------------------------------------------------------------
> >
>

Re: RGB Driven Color Printers?

2006-04-11 by Tom

The PrintFIX PRO software isn't designed to make CMYK profiles.  The
spectro unit itself doesn't preclude making multi-channel profiles
though most photographic printers these day are designed to accept RGB
input.
An interesting point to make is that the better inkjet printers these
days have more than just Cyan, Magenta, Yellow, and Black (K).  The
Epson R1800 has additional inks for Red, Blue, Photo Black, Matte
Black, and Gloss Optimizer.  A valid question then would be ... do you
make a profile for CMYRBK?  How about the ones with light cyan,
magenta, and yellow.  Does this make it a C M Y LC LM LY K profile?
Since printer manufactuers have been changing ink formulations, hues,
and density its certainly simpler at the moment to stick with RGB and
let the printer manufacturers themselves worry about how to mix the
inks to result in a particular RGB color.
Anyhow I guess the point is that the software at the moment only makes
RGB profiles.  Do you have a printer that only accepts CMYK image
data?  Thats pretty rare these days isn't it?



--- In colorvision_group@yahoogroups.com, "hanson102" <hanson102@...>
wrote:
>
> does this mean that the printfix pro suite won't work with printers
> that accept cmyk output?
> 
> 
> 
> --- In colorvision_group@yahoogroups.com, Howard <home@> wrote:
> >
> > All inkjet consumer printers are designed to take RGB output from the 
> > computer and convert it internally to CMYK data before printing. 
> > Although I've never tried it they apparently perform very poorly
if fed 
> > computer output in CMYK format.
> > 
> > Howard
> > 
> > hanson102 wrote:
> > 
> > > The box of the Print Fix Pro Suite says that it works with any RGB
> > > driven Color Printer.  What does this exactly mean?  Printers
are CMYK
> > > inks.  This confuses me.
> > >
> > > Any inputs?
> > >
> > > Thanks!
> > >
> > >
> > >
> > >
> > >
> > >
> ------------------------------------------------------------------------
> > > YAHOO! GROUPS LINKS
> > >
> > >     *  Visit your group "colorvision_group
> > >       <http://groups.yahoo.com/group/colorvision_group>" on the web.
> > >        
> > >     *  To unsubscribe from this group, send an email to:
> > >        colorvision_group-unsubscribe@yahoogroups.com
> > >      
>
<mailto:colorvision_group-unsubscribe@yahoogroups.com?subject=Unsubscribe>
Show quoted textHide quoted text
> > >        
> > >     *  Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> > >       Service <http://docs.yahoo.com/info/terms/>.
> > >
> > >
> > >
> ------------------------------------------------------------------------
> > >
> >
>

Re: [colorvision_group] Re: RGB Driven Color Printers?

2006-04-11 by John Vitollo

If your are asking if PrintFIX PRO will make CMYK profiles then the answer
is no. 

You can print CMYK files using a PrintFIX PRO RGB paper profile using the
Epson driver.

The Epson driver is expecting an RGB file but converts it to "CMYK" to fire
the inks. 

If a CMYK file is sent to the Epson printer it converts it first to an RGB
file then back to CMYK before printing.


.
Show quoted textHide quoted text
On 4/11/06 9:34 AM, "hanson102" <hanson102@...> wrote:

> does this mean that the printfix pro suite won't work with printers
> that accept cmyk output?
> 
> 
> 
> --- In colorvision_group@yahoogroups.com, Howard <home@...> wrote:
>> 
>> All inkjet consumer printers are designed to take RGB output from the
>> computer and convert it internally to CMYK data before printing.
>> Although I've never tried it they apparently perform very poorly if fed
>> computer output in CMYK format.
>> 
>> Howard
>> 
>> hanson102 wrote:
>> 
>>> The box of the Print Fix Pro Suite says that it works with any RGB
>>> driven Color Printer.  What does this exactly mean?  Printers are CMYK
>>> inks.  This confuses me.

RGB Driven Color Printers?

2006-04-11 by Jack Winberg

Hi:

No, it does NOT mean that at all.  PFP works with a very wide variety 
of printers.  Many are not aware that  inkjet printers (and many 
others) are actually RGB devices, in spite of having CMYK inks as the 
primary colors.

Jack Winberg

At 01:50 PM 4/11/2006, you wrote:
Show quoted textHide quoted text
>From: "hanson102" <hanson102@...>
>Subject: Re: RGB Driven Color Printers?
>
>does this mean that the printfix pro suite won't work with printers
>that accept cmyk output?
>
>

Re: [colorvision_group] Re: RGB Driven Color Printers?

2006-04-12 by CDTobie@aol.com


In a message dated 4/11/06 9:36:03 AM, hanson102@... writes:


does this mean that the printfix pro suite won't work with printers
that accept cmyk output?


PrintFIX PRO does not build CMYK profiles. Some "devices that accept CMYK output" (which basicly means PostScript RIPs and devices with internal PostScript RIPs) have defined internal CMYK conversions so that they can work with RGB profiles for RGB data, others do not. So if your printing system can accept RGB profiles for RGB file output, then it can use PrintFIX PRO profiles. If it can't, and thinks only in CMYK, requiring a CMYK profile to convert its RGB to CMYK for it, then it can't be used with a PrintFIX PRO profile, as PrintFIX PRO profiles don't do that.

Most recent color lasers have an RGB driver option, and virtually all inkjet printers have RGB drivers, though some of them can be used with CMYK RIPs as well. Photo labs can be profiled in RGB, so its really prepress workflows and printing presses that are dominantly CMYK based, and profiling printing presses has never been a ColorVision goal.

C. David Tobie
Product Technology Manager
ColorVision Business Unit
Datacolor Inc.
CDTobie@...

www.colorvision.com

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