Typewriting machines – Code-printing typewriter – For typing and encoding
Patent
1989-02-27
1990-06-19
Eickholt, Eugene H.
Typewriting machines
Code-printing typewriter
For typing and encoding
101 72, 3644642, 364717, 380 3, 380 23, 380 51, 382 57, 235431, 235432, 235375, B41J 500, G06F 738, G06F 1520, G06K 903
Patent
active
049348469
ABSTRACT:
A method of franking mail items is disclosed in which the franking impression includes a machine readable portion and a visually readable portion. The machine readable portion comprises a data block including at least a postage charge and a pseudo-random number and the data block is encrypted prior to printing. During printing of the franking impression, at least a part of the machine readable portion is read and compared with the data block intended to be printed. If the comparison is satisfactory the printing operation is continued to print the visually readable portion. The pseudo-random number is changed for each franking transaction which may be each item or batch of items. The machine readable portion is read at a mail handling centre to provide an input to a postage charging and accounting function.
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Alcatel Business Systems Limited
Eickholt Eugene H.
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