1
George B Edelmann, Kevin D Hunter, Arno Muller, Alfred C Schmidt Jr: System for detecting unaccounted for printing in a value printing system. Pitney Bowes, Peter Vrahotes, Melvin J Scolnick, David E Pitchenik, October 4, 1988: US04775246 (204 worldwide citation)

A system for detecting fraudulent imprints on documents is disclosed. The system comprises a metering device, a host and a verifying facility. The metering device provides a validation signal to the host and its associated printer. Thereafter, the printer prints information which includes informatio ...


2
George B Edelmann, Arno Muller: System for detecting unaccounted for printing in a value printing system. Pitney Bowes, Donald P Walker, David E Pitchenik, Melvin J Scolnick, July 12, 1988: US04757537 (181 worldwide citation)

A system for detecting fraudulent imprints on documents is disclosed. The system comprises a metering device, a host and a verifying facility. The metering device provides a validation signal to the host and its associated printer. Thereafter, the printer prints information which includes informatio ...