Tech Tidbit: Fixing poor scanner images

A couple weeks ago I started noticing that when I scanned using the Automatic Document Feeder on my scanner ( HP OfficeJet Pro 8500), I was getting disappointing page quality, with a vertical line through the page.  It looked something like this:


My first reaction? Remembering other scanner issues I’ve had over years, I assumed it was something mechanical or electronic, which led to the inevitable language one typically doesn’t hear in church. 🙂

However, it really was only a piece of debris on the ADF scanning window, which is a narrow window to the left of the main scanner bed window.   The fix was simple, clean the window (and the bed window while I was at it).

Here are the instructions from my scanner’s user manual (thanks to HP):


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