Optically scannable answer sheet booklet with sequence bars printed thereon and method of producing same
US4300791A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1980 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Mar 27, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B3/085
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An optically scannable answer sheet booklet is comprised of a plurality of signatures which are folded to provide the various sheets or leaves of the booklet. The opposite sides of each sheet or leaf constitutes a page of the booklet and has printed thereon certain instructions or questions as well as so-called response areas or bubbles which are to be marked by the examinee. The various signatures are each printed with a sequence bar which collectively, if the correct number of signatures are properly inserted, form a recognizable pattern. If a signature is incorrectly inserted, duplicated or omitted, the pattern will be broken or will contain an extra sequence bar which apprises the inspector of faulty booklets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.