Card recording and/or reproducing apparatus

Claim 1

A magnetic recording and/or reproducing apparatus with card guide path for a card having a pair of elongated magnetic parallel tracks comprising, means for driving said card, a machine chassis, a main head chassis, a recording head mounted on said main head chassis which is pivotably attached on said machine chassis and biased by spring toward said card in order to be in operative relationship with said magnetic tracks on said card, an erase head movably mounted relative to said recording head on said main head chassis so as to maintain a predetermined relationship to said magnetic track as said card moves through apparatus, wherein said main chassis is mounted for vertical movement between upper and lower positions wherein said magnetic head is aligned with one or the other of said magnetic tracks, upper and lower horizontal stoppers engageable with said main chassis such that said upper horizontal stopper determines said upper position and said lower horizontal stopper determines said lower position, and over-the-center spring biasing means engageable with said main chassis with its center position between said upper and lower positions such that it biases said main chassis upwardly against said upper horizontal stopper when the main chassis is above said center position and biases said main chassis downwardly against said lower horizontal stopper when said main chassis is below said center positions.