Re: Profiling the ip5000
Re: Profiling the ip5000
- Subject: Re: Profiling the ip5000
- From: Dana Rasmussen <email@hidden>
- Date: Sun, 14 May 2006 20:52:42 -0700
- Thread-topic: Profiling the ip5000
> Hi again, Dana.
>
> I don't think I misunderstood you. Inkjet printers are usually profiled as
> RGB devices when one is printing using the manufacturer's software driver.
> But, when the inkjet printer is printing through an attached RIP, then it is
> profiled as CMYK. That is the customary approach, anyhow.
>
> What chart have you been experimenting with? And what makes you say that it
> does not "seem to have the ability to take advantage of a printer that
> actually has RGB inks to print with"?
>
> Please let me know.
>
> Regards.
>
> --------------
> Marco Ugolini
> Mill Valley, CA
Here is my thinking. Maybe I am completely wrong.
The test target generation algorithms, such as the one used by Profilemaker
measuretool, are based on a printer using CMYK, and maybe lC, lM. Can we
assume that these algorithms are going to work to effectively profile a
printer that has all the above, plus RGB? Do the target sets include colors
that simply cannot be printed without RGB inks?
One would think that these extra colors would allow a much larger gamut than
a CMY inkset would allow, but viewing the profiles I have made so far with
Profilemaker, and comparing Epson 4800 profiles for the same paper, I am
seeing some extension, but certainly not what I was expecting.
--
Dana Rasmussen
Seattle, WA
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