Re: Controlling 6 or 7 inks
Re: Controlling 6 or 7 inks
- Subject: Re: Controlling 6 or 7 inks
- From: "Ernst Dinkla" <email@hidden>
- Date: Fri, 25 Oct 2002 13:14:48 +0200
Bruce Fraser wrote:
>
Unless you're printing through one of a handful of RIPs that bypass
>
the printers' native screening and control the printhead directly,
>
any control over black generation is illusory. The stock drivers
>
deliver RGB input to the black box in the driver that handles both
>
screening and translation from RGB to CcMmYKk. (This is an OS
>
limitation that is theoretically removed in OS X, but nobody has made
>
a stock driver that passes CMYK to the printer without a conversion
>
to RGB.)
>
>
The majority of RIPs handle these printers as RGB devices and feed
>
that same black box. Any RIP that uses the native screening handles
>
them as RGB devices, and a fair number that bypass the native
>
screening still handle them as RGB devices.
>
>
So unless you're printing from one of these very few RIPs, you're
>
better off profiling the printers as RGB, because your data will go
>
through one fewer conversion.
Hard to say whether Gimp-Print is a RIP or a driver. There's more control
available than exists in the native Epson drivers. It allows CMY input and
CMYK output, but will mainly be used with RGB input. There are more choices
though so even CMY input and RGB output could be done. For 6 colour printers
there's a choice to drive them CMYK or CcMmYK. No ICC colour management yet.
The OS X version should be available now.
Ernst
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