Check-digit printing means

Details Check-digit printing means Check-digit printing means

1978-12-19

1980-12-02

Coven, Edward M.

Printing

Selective or progressive

Numbering

101 72, 3401461AJ, 235 617R, 235 92EC, 364738, B41L 4500, G08C 2500

Patent

active

042364469

ABSTRACT:
The invention contemplates a document printer for the automatically indexed sequential account numbering of successive documents, with the added feature of printing alongside each sequential number an automatic indication of the validity or invalidity of the number printed, said indication being a "check digit" which, in conjunction with the printed account number, renders the printed account number self-checking. The invention is described in application to weighted-modulus self-checking systems of the Modulus 10 and Modulus 11 varieties, inter alia.

REFERENCES:
patent: 3254596 (1966-06-01), Shoup et al.
patent: 3571581 (1971-03-01), Kaus
patent: 3650205 (1972-03-01), Wybrow et al.
patent: 3778766 (1973-12-01), Rapp
patent: 3815495 (1974-06-01), Straukbein
patent: 4085670 (1978-04-01), Poole
Larin et al., IBM Tech. Discl. Bulletin, vol. 10, No. 12, May, 1968, pp. 1872-1873.

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