Yahoo Groups archive

QTR-Quadtone RIP

Index last updated: 2026-04-28 23:12 UTC

Message

Re: QTR Linearizing of Quad files -- K7 Piezo and regular curves

2015-07-26 by brian_downunda@...

I would regard the original curve as more than close enough, and not worth re-linearising. I predict that if you repeat the measurement once a week, you'll get sample variation from the printer, paper and measurement device which will result in much the same sort of line, but with different slight deviations from the straight line. Despite all the science and technology, there are limitations to accuracy and repeatability. Plus you won't see these differences in a print.

As an example of a quad file that did need relinearising, see this earlier post of mine:
https://groups.yahoo.com/neo/groups/QuadtoneRIP/conversations/messages/12531


---In QuadtoneRIP@yahoogroups.com, <mccarvill@...> wrote :

After using the re-linearization tool and printing with the new quad-lin file, I got the result you see here - http://markmccarvill.com/LinearizationTest.jpg

It shifted the values from slightly below the target line to slightly above them: a small change but I wouldn’t call it an improvement.

Mark

Attachments

  • No local attachments were found for this message.

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.