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: Wed, 30 Oct 2002 09:53:42 +0100
----- Original Message -----
From: "Johan Lammens" <email@hidden>
To: <email@hidden>
Sent: Wednesday, October 30, 2002 8:57 AM
Subject: Re: Controlling 6 or 7 inks
>
On Tuesday, October 29, 2002, at 07:50 PM,
>
email@hidden wrote:
>
>
> From: "Ernst Dinkla" <email@hidden>
>
> Date: Tue Oct 29, 2002 12:45:41 PM Europe/Madrid
>
> To: <email@hidden>
>
> Subject: Re: Controlling 6 or 7 inks
>
>
>
> By using light inks CcMmYK (more coverage = more overlay) the
>
> colourmixing
>
> will behave more subtractive compared to smaller CM dots that will be
>
> printed next to one another. That has to influence the gamut one way or
>
> another. Whether that means it is increased by less white paper is
>
> harder to
>
> say. The extra white of the paper in CMYK and so less saturation
>
> should be
>
> reduced by a good profile. It wouldn't surprise me that the added
>
> subtractive mixing is the actual cause of a slightly wider gamut.
>
>
Agreed - since it's saying the same thing really. White paper in the
>
mix means additive color mixing in addition to subtractive, and less
>
white paper means less additive and more subtractive mixing.
That depends. In the real highlights the dots will still not get on top of
one another with cm inks and the effect you describe will be contributing
more. From 20 to 50% density (my Wasatch SoftRip uses 50 % for the CM/cm
boundary) the overlapping and so subtractive printing will be more prominent
with cm inks. At which range is the gamut increased ?
This must have been discussed long before inkjets appeared on the market. It
is part of what conventional gravure printing distinguished from halftone
printing. Dye sub printing and of course photo prints from any other
halftone reproduction. CMYK full colour halftone printing always had a
(theoretical) flaw in using CMYK inks in the highlights as subtractive
colourmixing isn't used to the full there.
As Graeme Gill commented, CcMmYK will be replaced with higher resolution and
droplet size variation CMYK. I do hope that it doesn't mean that this kind
of printing goes the halftone route as a result of that. Epson makes a
distinction between photo printers and printers for general work, it will be
nice if they keep that difference in their product line and even make it
more pronounced. Continuous tone is an honourable goal and part of that is
revived by inkjet. To bring it back on topic: without today's colour control
that wouldn't have been possible.
Ernst
_______________________________________________
colorsync-users mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/colorsync-users
Do not post admin requests to the list. They will be ignored.