Bar code field and bar code reader

Details Bar code field and bar code reader Bar code field and bar code reader

1989-08-10

1991-10-22

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235454, 235462, 235472, 359 2, 359 3, 359 15, 359558, G06K 710

Patent

active

050597760

ABSTRACT:
An article of manufacture contains a substrate which contains a bar code field containing bar elements and background elements. The bar code elements have embossed, optically-reactive, microscopic periodic, relief structures which are suitable for optical-machine readout. A readout device generates an incident light beam and contains photosensors to detect the diffracted light beams.

REFERENCES:
patent: 3988572 (1976-10-01), Constant
patent: 4108367 (1978-08-01), Hannan
patent: 4171766 (1979-10-01), Ruell
patent: 4211918 (1980-07-01), Nyfeler et al.
patent: 4568141 (1986-02-01), Antes
patent: 4743744 (1988-05-01), Nakase et al.
patent: 4743773 (1988-05-01), Katana et al.
patent: 4837425 (1989-06-01), Edwards

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