Opposite surface scanning of a mark sense form

Details Opposite surface scanning of a mark sense form Opposite surface scanning of a mark sense form

1993-02-01

1993-11-16

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235449, 235454, G06K 710

Patent

active

052626245

ABSTRACT:
A mark sense form and an optical mark reader operate together as an optical mark reading system to accomplish the opposite side scanning of the mark sense form. The opposite side scanning mark sense form comprises a sheet of material having a timing track preprinted on only one side of the sheet and one or more response areas located on the opposite side of the sheet, or on both sides of the sheet, in a predetermined relationship to one of the timing marks in the timing track. The response areas may have an associated response bubble printed as an outline for the user in selectively marking the mark sense form with data marks. The opposite side scanning optical mark reader comprises a first read head for scanning the timing track and response areas on one side of the form, a second read head for scanning response areas on the other side of the form and circuitry or software for producing an enabling signal from the timing track on the one side of the form such that the second scanner scans the response areas on the other side of the form in response to the enabling signal.

REFERENCES:
patent: 2690300 (1954-09-01), Wilson
patent: 3163746 (1964-12-01), Hoeser
patent: 3227884 (1966-01-01), Rantsch et al.
patent: 3267258 (1966-08-01), Bene
patent: 3402299 (1968-09-01), Held
patent: 3578953 (1971-05-01), Milford
patent: 3983364 (1976-09-01), Firehammer et al.
patent: 3986001 (1976-10-01), Saito
patent: 4937439 (1990-06-01), Wanninger et al.
Japanese Patent Abstract, vol. 006237, Publ. No. JP 57135414, published Nov. 25, 1982.

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