Printed and encoded mass distributable response piece and method of making the same
US5087805A · kind A · utility
33Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1989 |
| Grant date | Feb 11, 1992 |
| Priority date | — |
| Expiry date | Oct 31, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/1916
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of simultaneously encoding successive groups of printed paper sheets or mass distributable material wherein the sheets are provided with unperceptable and virtually invisible common code pattern by laser means which is supplied with a distinct series of coded pulse signals in synchronism with control pulses to produce a different optically-scannable coded hole pattern on each group of printed sheets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.