But instead of using a magnetic head in the drive to make the changes, the magnets are built into the disk itself.
Standard 8mm had the stripe between the perforations and the edge of the film which made good contact with a magnetic head problematic.
The magnetic head touches the recording surface, as it does in a normal floppy drive.
The only physical contact is during recording when a magnetic head is brought into contact with the side of the disc opposite to the laser.
The cleaning card is not only cleaning the reading area of the magnetic head which is cleared.
If no micro chip is placed on the card, the transaction goes directly above the magnetic head.
If a magnetic stripe can be recognized, a shutter will be opened and the card will be transported to the second magnetic head by roles.
It was also considered more durable than magnetic tape, since it is not vulnerable to magnetic fields and is read by lasers instead of physical contact with a magnetic head.
