Daniel Reetz, the founder of the DIY Book Scanner community, has recently started making videos of prototyping and shop tips. If you are tinkering with a book scanner (or any other project) in your home shop, these tips will come in handy. https://www.youtube.com/channel/UCn0gq8 ... g_8K1nfInQ

Air Platen Thoughts

Built a scanner? Started to build a scanner? Record your progress here. Doesn't need to be a whole scanner - triggers and other parts are fine. Commercial scanners are fine too.
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StevePoling
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Air Platen Thoughts

Post by StevePoling » 07 Mar 2011, 01:00

In another thread (http://diybookscanner.org/forum/viewtopic.php?f=1&t=863), TomHorsley said:
In my imagination, I have this device that drops a post-it wrapped "sausage" on the edge of the page, then rolls it a bit, so the weight holds the pages down...
In my air platen experiments I used Teflon sheets to engage the book in the gutter at the top and bottom of the page. The Teflon was to encourage the paper to slide up and out of the way. I used Velcro to hold two adjustable strips of metal that each engaged the edge of the page furthest from the spine. The result was unsatisfactory because I spent a lot of time smoothing/tucking paper underneath the metal. If I didn't, gravity and friction would bunch up the pages. And the tucking caused the strips to move.

Now, let's suppose we replace the strips of metal with Tom's post-it "sausages" (or rubber rollers taken from a dead printer), and a knob on each "sausage's" axle allowing the operator to turn the "sausage" slightly to engage the paper and tug it a little bit out of the gutter. This should improve air platen performance.

Does anyone think this worthy of further experiment?

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