Electrographic transmitter
First Claim
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1. AN ELECTROGRAPHIC TRANSMITTER THAT COMPRISES A WRITING SURFACE, MEANS FOR EFFECTIVELY SWEEPING A BEAM OF LIGHT OVER SAID SURFACE IN A PLANE SUBSTANTIALLY PARALLEL TO AND A SMALL DISTANCE ABOVE SAID SURFACE, A PHOTOSENSITIVE ELEMENT POSITIONED TO CAPTURE THE LIGHT OF SAID BEAM THROUGHOUT ITS ENTIRE SWEEP OVER SAID WRITING SURFACE, AND MEANS FOR IDENTIFYING THAT INSTANT IN THE SWEEP OF SAID BEAM AT WHICH SAID PHOTOSENSITIVE ELEMENT IS SHADOWED BY AN OPAQUE OBJECT.
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1 Claim
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1. AN ELECTROGRAPHIC TRANSMITTER THAT COMPRISES A WRITING SURFACE, MEANS FOR EFFECTIVELY SWEEPING A BEAM OF LIGHT OVER SAID SURFACE IN A PLANE SUBSTANTIALLY PARALLEL TO AND A SMALL DISTANCE ABOVE SAID SURFACE, A PHOTOSENSITIVE ELEMENT POSITIONED TO CAPTURE THE LIGHT OF SAID BEAM THROUGHOUT ITS ENTIRE SWEEP OVER SAID WRITING SURFACE, AND MEANS FOR IDENTIFYING THAT INSTANT IN THE SWEEP OF SAID BEAM AT WHICH SAID PHOTOSENSITIVE ELEMENT IS SHADOWED BY AN OPAQUE OBJECT.
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Current AssigneeLeon D. Harmon
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Original AssigneeLeon D. Harmon
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InventorsHarmon, Leon D.
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Application NumberUS04/161,167Time in Patent Office838 DaysField of SearchUS Class Current178/18.09CPC Class CodesG01V 8/18 using mechanical scanning s...
