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

Hybrid book ripper using v-shaped holder and flatbed scanner

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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eriel_ramos
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Joined: 04 Mar 2014, 00:52

Hybrid book ripper using v-shaped holder and flatbed scanner

Post by eriel_ramos » 27 Jul 2009, 15:01

Well, my first post, so, glad to be here.

The concept for the 2-camera book scanner is really powerful, and is definitely the way to go.

However, as an interim step, I'm looking at the feasibility of using an inverted v-shaped glass/acrylic holder over a flatbed scanner.

Some of the issues I see are:
  • * distortion
    * light leakage
    * focus from top to bottom of the sides
I'm just about ready to give up, but I want to get the opinion of people with much more experience that I have on the matter.

TIA.
riel

you1
Posts: 92
Joined: 04 Mar 2014, 00:53

Re: Hybrid book ripper using v-shaped holder and flatbed scanner

Post by you1 » 27 Jul 2009, 15:17

Hi eriel,

Glad to have you aboard.

I believe Kirti suggested something similar: http://www.tekstadventure.nl/branko;
and there is the "sister" project http://bkrpr.org/doku.php

Discussed in this thread: http://www.diybookscanner.org/forum/vie ... 1&start=30

-Edvin

Kirtai
Posts: 10
Joined: 27 Jul 2009, 10:49
E-book readers owned: PRS-505
Number of books owned: 3000
Location: Scotland

Re: Hybrid book ripper using v-shaped holder and flatbed scanner

Post by Kirtai » 27 Jul 2009, 15:25

Yes, you might be able to adapt the design I found at http://www.tekstadventure.nl/branko/inv ... canner.svg.

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daniel_reetz
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E-book readers owned: Used to have a PRS-500
Number of books owned: 600
Country: United States
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Re: Hybrid book ripper using v-shaped holder and flatbed scanner

Post by daniel_reetz » 27 Jul 2009, 16:14

If you mean putting a v-shaped platen point-up, over a flatbed scanner, it will not work. The reason for this is that the scanner can only focus about 1mm above its glass surface. If you had a scanner for each side, it might work, but you'd have to figure out a way to get the two scanners close enough to scan the gutters of the book.

you1
Posts: 92
Joined: 04 Mar 2014, 00:53

Re: Hybrid book ripper using v-shaped holder and flatbed scanner

Post by you1 » 27 Jul 2009, 17:11

you'd have to figure out a way to get the two scanners close enough to scan the gutters of the book
Now that you mention it, a friend of mine used to work in a support department, supporting scanners. According to him, the element that scans the pages, is very small - thus, if one can get their hands on old scanner, they might be able to take it apart and join them.
This is certainly a discovery effort.

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daniel_reetz
Posts: 2785
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E-book readers owned: Used to have a PRS-500
Number of books owned: 600
Country: United States
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Re: Hybrid book ripper using v-shaped holder and flatbed scanner

Post by daniel_reetz » 27 Jul 2009, 19:47

I have several scanners in various stages of disassembly, I can send you some pictures. You'll see that it's a pretty tough problem, even with so called "CIS" image scanners, to get closer than an inch on a side. If you look inside a flatbed scanner from the top, you'll see that almost invariably one side is supported by a steel rod, and the other by a plastic flat surface. The rod side is the motor-driven side and the plastic side just rides as a linear bearing. That side is the problem side. You'd need to invent a new bearing and probably saw off the left side of the optical assembly.

When I get a chance to post some pictures this will be much more clear.

eriel_ramos
Posts: 3
Joined: 04 Mar 2014, 00:52

Re: Hybrid book ripper using v-shaped holder and flatbed scanner

Post by eriel_ramos » 01 Aug 2009, 23:47

Folks, thanks a million for your input.

I particularly like the concept of the inverse planetary scanner: with one camera and a simple cubical construction, it looks about my speed in the handyman category for a starter :-)

Any other suggestions will be gratefully considered!

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