Bar code reader producing two groups of vertical scan lines and

Details Bar code reader producing two groups of vertical scan lines and Bar code reader producing two groups of vertical scan lines and

1992-05-26

1994-02-15

Willis, Davis L.

Registers

Coded record sensors

Particular sensor structure

359216, 359219, G06K 710

Patent

active

052869610

ABSTRACT:
In a bar code reading apparatus, a laser beam emitted from a laser beam source disposed in a casing is reflected by a rotational mirror to scan a bar code. The reflected laser beam is reflected by a fixed scan mirror having four mirror members continually arranged with given angles therebetween, and the resultant beams are irradiated outward through a read window formed in the casing. Multiple scan lines in multiple directions are obtained on a normal plane to the read window. These scan lines consist of two groups of vertical scan lines in the normal plane, and two groups of oblique scan lines inclined at a given angle with respect to the horizontal direction.

REFERENCES:
patent: 4766298 (1988-08-01), Meyers
patent: 4795224 (1989-01-01), Goto
patent: 4816661 (1989-03-01), Krichever et al.
patent: 4848862 (1989-07-01), Yamazaki
patent: 5000529 (1991-03-01), Katoh et al.
patent: 5229588 (1993-07-01), Detwiler et al.

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