email was Mac something something

[John Foust]

At 04:19 PM 1/13/2005, Tom Jennings wrote:
>Use a laser whose output the tape isn't transparent to; a "1" is a
>heat-distorted/discolored spot. A smaller spot for the "sprocket"
>hole/index.

Yes, reflectance rather than mechano-optical hole-or-not
would be much faster.  Like a CD, but flexible, on a spool.
Much great surface area than a 34 mm radius band on a 120 mm disc.

- John