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The Drexler Technology Corporation patent solves the following problem:
Our analysis of this patent is as follows:
Drexler Technology Corporation’s patent US 4814594 A deals with Updatable micrographic pocket data card.
A strip of Optical contrast laser recording material would wallet-size card, and laser written characters recorded thereon. The characters are formed with a plurality of pixels, similar in nature to the dots that make up character dot matrix, except that the pixels themselves formed spots. The spots thrown in a geometric regular war and often written in a column at a time until a full pixel formed. Machine readable and visually readable characters can be combined in a strip of data.
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