The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 1993
Filed:
Feb. 01, 1993
Vernon F Koch, Prior Lake, MN (US);
National Computer Systems, Inc., Minneapolis, MN (US);
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.