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Digital BW, The Print

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Re: Curve primer needed - IJC

2004-08-14 by Roy Harrington

Ok, I'm sorry John.  I guess I missed your point.
I thought you were looking at the .quad files from each system.
The .txt files are higher level descriptors of what the inks "look" like.
They are what people would ordinarily edit.   On the Mac the profiling
making software converts that into the actually set of curves or profile.
These profiles are a table of the exact amount of each of the inks to be
used for each of the 256 different grayscale values.   I don't have this
profile creation software running on the PC yet, so I just moved the
profile tables from one machine to the other.   On both machines the
driver reads the table at print time to send the right ink commands to
the printer.

Roy


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "johnglodge" 
<john.lodge@s...> wrote:
> Roy, somehow I am still missing the point.
> 
> Yes I have been opening with wordpad and just to make sure looked at 
> the files with a hex viewer.
> 
> But the Windows profiles are files like "EEM_2200-cool.quad" while 
> the MAC profiles are files like "UC-EEnhMatte-cool-1.txt"
> 
> It is not at all clear to me how to get from the latter that are 
> text files to the former that are "compiled"
> 
> ...John 
> 
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Roy 
> Harrington" <roy@h...> wrote:
> > 
> > Byte for byte they are identical.
> > You are probably looking at the file with Notepad.  Yes, they look
> > weird but that is because on Windows the end of line marker is a
> > <carriage-return><line-feed> where as on Mac/Unix they just use
> > a <line-feed>.  So Notepad thinks it's one big line.
> > I think WordPad will read the file and show the separated lines.
> > 
> > Roy
> > 
> > --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "johnglodge" 
> > <john.lodge@s...> wrote:
> > > Hi Roy, I must be missing something. When I look at the MAC 
> profiles 
> > > they are in Text Files that can be edited and the file layout 
> makes 
> > > it obvious what a little tweeking would be.
> > > 
> > > On the other hand in the XP case the .quad files are a lot more 
> > > opaque or so its seems to me.
> > > 
> > > ...John 
> > > 
> > > --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Roy 
> > > Harrington" <roy@h...> wrote:
> > > > --- In 
> DigitalBlackandWhiteThePrint@yahoogroups.com, "johnglodge" 
> > > <john.lodge@s...> 
> > > > wrote:
> > > > > Roy, that is interesting but how do you do that with the 
> WinXP 
> > > > > version where the ink levels are buried in a binary file.
> > > > > 
> > > > > ...John
> > > > > 
> > > > 
> > > > Hi John,
> > > > 
> > > > There really isn't anything "buried" in any files.  Neither 
> WinXP 
> > > nor MacOSX have
> > > > anything to do with figuring out what goes to the printer.  
> > > Everything that happens
> > > > from the individual grayscale pixels all the way to each 
> > > individual dot on the
> > > > page is under the control of QTR.  The OS's do nothing more 
> than 
> > > pass the info
> > > > along, dealing with spooling and usb hardware.
> > > > 
> > > > Roy

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