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Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

Message

Re: Curve primer needed - IJC

2004-08-14 by johnglodge

Roy,

Cool explains a lot and I can wait I'm sure you are busy.

...John

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Roy 
Harrington" <roy@h...> wrote:
> 
> 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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