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Method and apparatus for capturing handwritten information and providing visual feedback

  • US 5,401,916 A
  • Filed: 09/29/1992
  • Issued: 03/28/1995
  • Est. Priority Date: 09/29/1992
  • Status: Expired due to Term
First Claim
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1. An apparatus for capturing handwritten information electronically and for providing a visible trace of what has been written, comprising:

  • a housing;

    a sensing device within the housing for electronically sensing movement of a marking implement with respect to a surface of said device; and

    a reusable medium having self-contained marking material therein and located in operative relation to said sensing device on which a trace of handwritten information appears when said marking implement is moved with respect to said sensing device;

    said medium comprising at least two sheets of material placed on top of one another so that localized pressure causes selective adhesion between the two sheets at the points of pressure application, causing a visible trail;

    said medium also including a separator for separating the two sheets after a visible trail has been produced on the sheets, to erase the trail, said separator having an extension for actuating a switch when operated to indicate that an erasing operation has taken place;

    a first of said sheets comprising a flexible translucent sheet having a fluorescent dye dispersed throughout and a second sheet comprising an opaque sheet;

    said apparatus also including an ultraviolet light source located within said housing.

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