unreadable HP cartridges

[Joe R.]

At 11:43 PM 6/22/05 +0100, you wrote:
>> Ok, use a magnetic fingerprinting powder on it ;) Actually, I've heard
(and 
>> seen) there IS a liquid solution that will let you visibly see the dots on 
>> mag tape.
>
>There is. It generally goes under the name of 'Magnasee' and is a 
>colloidal suspension of iron oxide in some suitable volatile liquid. I 
>have no idea where you get it nowadays, though.


   I still have a bottle of it but what good would it do to know the binary
pattern? You couldn't program a new tape with it.

   Joe