G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 7/10 (2006.01) G06K 7/015 (2006.01) G06K 7/016 (2006.01) G06K 17/00 (2006.01)
Patent
CA 2074562
23 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.
National Computer Systems Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
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