Making/Printing Optical Encoder Disks; Inkjet vs. Toner; QRD1114 vs. Hamamatsu,

Zoot

Here's a pic of the encoders themselves. The Hamamatsus are *very* small, 5 pins.

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When the going gets weird, the weird turn pro. -- HST

1uffakind.com/robots/povBitMapBuilder.php
1uffakind.com/robots/resistorLadder.php

Leon

Here's some new software for printing encoder disks:

http://www.mindspring.com/~tom2000/Delphi/Codewheel.html

Leon

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Amateur radio callsign: G1HSM
Suzuki SV1000S motorcycle

Velocit

Zoot said...
First, unless there is someone out there that knows something I don't, INKJET INK WILL NOT ABSORB IR. And trust me, I tried more variations than you want to think about -- different colors, different mixes, different papers, running through black only, printing 3-4-5 times on the same sheet, printing both sides, etc.

What kind of printer are you using, and what kind of inks does it use? I've found that dye inks are transparent to many different wavelengths of light, whereas pigment inks are much more opaque.

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-Paul

Zoot

I tried the inkjet printers we have around here -- an HP, an Espon, a Canon. Results were all the same. Whether or not the standard ink cartridges for these are "pigment" or "dye" I can't say. All of the toner-based prints (laser printer, xerox, etc) had stellar results even if the prints were shoddy.

Leon -- nice little wheel utility you found there. Too bad it's Windows only...

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When the going gets weird, the weird turn pro. -- HST

1uffakind.com/robots/povBitMapBuilder.php
1uffakind.com/robots/resistorLadder.php

Velocit

If you have the model numbers on hand, I can probably find out... Epson is the only brand I've found that makes reasonably priced pigment based printers.

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-Paul