| 摘要 |
A card reader (10), and method are described, to perform transactions on machine readable cards on which data is stored magnetically and which additionally include a printed matter on one face thereof. The reader (10) includes marking means (44) for visibly marking the card (41) during or after the transaction to denote the successful completion of the transaction where the latter is a debiting transaction the mark can denote the amount debited or the amount of credit remaining on the card. In one example, the reader includes a magnetic reading and writing head (38) and an electromagnetically driven punch for punching or indenting printing or penetrating the card surface adjacent a scale printed therealong. The punch is operated in synchronism with the movement of the card in the reader to mark the card at the appropriate position along the scale to denote the credit remaining or debited. Movement of the card into the reader causes magnetic data to be read and during reverse movement out of the reader the magnetic data is overwritten and the card marked by the punch. |
