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Scanner for superimposed card information retrieval system
閱讀：191發(fā)布：2023-10-27
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1. APPARATUS FOR REGISTERING THE OCCURRENCE OF ALIGNED LIGHT-TRANSMITTING SPOTS OF SUPERPOSED MATRIX-TYPE RECORD CARDS, COMPRISING A SUPPORT FOR HOLDING IN ALIGNED SUPERPOSITION A PLURALITY OF SUCH CARDS, A POINT-BY-POINT SELECTIVELY ILLUMINATABLE GENERALLY PLANAR LIGHT SOURCE DISPOSED ON ONE SIDE OF A STACK OF CARDS SUPPORTED BY SAID SUPPORT, PHOTOELECTRIC SENSING MEANS DISPOSED ON THE OPPOSITE SIDE OF SUCH STACK OF CARDS FOR RECEIVING LIGHT TRANSMITTED THROUGH ANY AND ALL POINTS OF SUCH CARDS, WHICH ARE COINCIDENTALLY LIGHT-TRANSMITTING, TO TRANSMIT LIGHT FROM SAID LIGHT SOURCE TOWARDS SAID SENSING MEANS, AND MEANS FOR SEQUENTIALLY ENERGIZING IN TURN THE RESPECTIVE POINTS OF SAID LIGHT SOURCE, TO EXCITE SAID SENSING MEANS IN TIMED RELATION TO THE OCCURRENCE OF LIGHT TRANSMISSION THROUGH COINCIDENTALLY LIGHT-TRANSMITTING REGIONS OF CORRESPONDING POINTS ON ALL OF SAID CARDS.
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