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OPTICAL IMAGING PEN FOR USE WITH INFRARED INK

  • US 20080111076A1
  • Filed: 01/16/2008
  • Published: 05/15/2008
  • Est. Priority Date: 05/25/1999
  • Status: Active Grant
First Claim
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1. An optical imaging pen configured to detect information encoded on a page with ink which is substantially invisible to the human eye, said pen comprising:

  • a housing;

    an ink pen cartridge and a stylus mounted side by side within the housing, the ink cartridge and stylus configured to be individually brought forward through an open end of the housing by rotation of a pen top rotatably mounted on an end of the housing;

    an electronics chassis mounted inside the housing;

    an infrared LED supported by the chassis for providing infrared radiation for projection onto the page;

    an image sensor for receiving reflected radiation from the surface;

    a radio frequency circuit having a radio frequency (RF) transmitter and receiver;

    a controller circuit for controlling operation of the LED, sensor and radio frequency circuit; and

    a rechargeable battery mounted about, and in contact with, the electronics chassis with an induction coil mounted about the chassis to enable induction recharging of the battery.

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