Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

previous by date index next by date
previous in topic topic list next in topic

Subject: RE: [Homebrew_PCBs] Re: Forcing printing of Magenta or Cyan from RGB in Windows

From: "Bob Headrick" <bobh@...>
Date: 2011-10-09

That should be useful, at least as a start. Typically the driver will tweak
things a bit to deal with various things like media settings and the
specific inks used.



Using the calculator as a start and then perhaps iterating by printing the
calculated color and adjusting as needed to remove any stray undesired
colors should work.



- Bob Headrick



From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
On Behalf Of Tony Smith
Sent: Sunday, October 09, 2011 1:41 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: RE: [Homebrew_PCBs] Re: Forcing printing of Magenta or Cyan from
RGB in Windows





> If color management is disabled in Windows and the printer driver, how can
I
> find an RGB value for each of the CMY colors?

Here's a calculator:
http://www.usq.edu.au/users/grantd/WORK/216color/ConvertRGB-CMYK-Grey.htm

There's no guarantee that using solid colours in RGB (eg Cyan is Red=0,
Green=255 & Blue=255) will give you pure CMYK colours when printed though.

Easy enough to find out I suppose.

Tony



[Non-text portions of this message have been removed]