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The concept of a window test is very simple: You place a sampling of prints up against or near a window in your house, studio, apartment, anywhere... and you watch what happens over time. It's an accelerated-testing approach. It's not super-scientific (unless you want it to be), but if done correctly, you can learn a lot about the relative strengths and weaknesses of specific combinations of the ink and paper that go into the prints you make. This is a Do-It-Yourself activity. These are YOUR prints that you're testing. In YOUR environment. You can draw valid, relative conclusions, and all it takes is a window and some time.

HJcornerSketch_B_250x.gif Window Test B (aborted)
A new test focusing on pigment inkjet prints was begun in October, 2007, but was aborted in January of 2009 for personal reasons.
Jan. 31, 2009
Overlaps2362_250x.jpg Window Test A (completed)
A simple relative comparison (visual) test of eight dye-based inkjet prints after 3, 6, and 9 months of window exposure in Harald's house. The relative rankings are not too surprising with one exception.
Feb. 9, 2006 -- Nov. 9, 2006

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