Method and system for reproducing identification characters

Details Method and system for reproducing identification characters Method and system for reproducing identification characters

1979-10-29

1981-05-19

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Thermal

235432, 235487, 128760, 346 76PH, 3401963Z, 400 73, 400103, B41J 320

Patent

active

042681790

ABSTRACT:
A method and system are described for producing identification characters that are both man and machine readable. The identification characters, such as those on a patient's I.D. bracelet or an inventory control tag, are scanned with an optical character reader. The character information obtained from the reader, or other input source, is processed and used to control the reproduction of the identification characters using a dot matrix printer. The readability of the characters is enhanced by using thermal paper and increasing the heat applied by the dot matrix printer to (1) enlarge the area of the dots and (2) increase their optical absorbance. The increased area and absorbance produces an apparent solid line character which is more easily readable by an optical character reader.

REFERENCES:
patent: 3523522 (1970-08-01), Whitehead et al.
patent: 3612321 (1971-10-01), Larson
patent: 3656473 (1972-04-01), Sodickson et al.
patent: 3688955 (1972-09-01), L'Huillier
patent: 3735350 (1973-05-01), Lemelson
patent: 3831006 (1974-08-01), Chaffin et al.
patent: 3848112 (1974-11-01), Weichaelbaum et al.
patent: 3859632 (1975-01-01), Etter
patent: 3900094 (1975-08-01), Larsen et al.
patent: 3913719 (1975-10-01), Frey
patent: 3949363 (1976-04-01), Holm
IBM Tech. Disc. Bulletin, by E. Uberbacher, vol. 19, No. 1, Jun. 1976, pp. 177-178.

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