Reciprocating Magnetic Stripe Reader
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10
A bidirectional variable-depth lead screw is used to reciprocatingly drive a magnetic read head across a magnetic stripe, such as the stripe on a credit card. The depth of the lead screw in one direction is greater than the depth in the return direction. The depth of the lead screw is used as a reference to extend and retract the read head as it scans the magnetic stripe and returns to start position.