Automated transaction system with modular printhead having print

Details Automated transaction system with modular printhead having print Automated transaction system with modular printhead having print

1988-10-17

1989-09-05

Cangialosi, Salvatore

Cryptography

Electric signal modification

Having production of printed copy

380 23, 364900, 34082534, H04L 900

Patent

active

048646180

ABSTRACT:
An automated transaction system employs a terminal for printing a value indicia, such as a postmark, on an article. The terminal contains a modular printer unit which has a printhead and a dedicated microprocessor physically permanently bonded together such that the printhead microprocessor cannot be physically tampered with without disabling the printhead. The modular printer unit includes a first supply of visible ink and a second supply of invisible ink, and an internal program for printing the value indicia with visible ink and an authentication code, which uniquely corresponds to the value indicia, with invisible ink. The invisible value indicia can be subsequently verified as authentic by machine reading of said invisible authentication code and comparing the authentication code for correspondence to the value indicia.

REFERENCES:
patent: 4024380 (1977-05-01), Gunn
patent: 4168533 (1979-09-01), Schwartz et al.
patent: 4637051 (1987-01-01), Clark
patent: 4757537 (1988-07-01), Edelmann et al.
patent: 4802218 (1989-01-01), Wright et al.

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