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Self-contained non-contact writing device

  • US 4,748,460 A
  • Filed: 01/09/1987
  • Issued: 05/31/1988
  • Est. Priority Date: 01/09/1987
  • Status: Expired due to Fees
First Claim
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1. A self-contained, non-contact writing device for use with a drop-on-demand ink jet writing/cartridge of a type having a self-contained ink supply and jetting means for ejecting ink droplets, said device comprising:

  • a. inner housing means for retaining such a writing/cartridge;

    b. circuit means for energizing the jetting means of a retained writing/cartridge to produce a writing stream of ink droplets;

    c. conductor means, mounted on said inner housing means, for providing electrical contact between said circuit means and a retained writing/cartridge;

    d. switching means coupled to said circuit means for activating said circuit means;

    e. spacer means, coupled to said inner housing means, for providing proper spacing between the jetting means of a retained writing/cartridge and a writing substrate; and

    f. outer housing means being slidably mounted on said inner housing means and constructed and located for the holding of said device during writing, said switching means being responsive to the movement of said outer housing means over said inner housing means and toward said spacer means to activate said circuit means.

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