Method and apparatus for the manufacture of freshly printed, numbered security papers cut to format
US4463677A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1983 |
| Grant date | Aug 7, 1984 |
| Priority date | — |
| Expiry date | Mar 29, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/543
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Finished printed sheets of security papers (10) are numbered in a numbering machine (21), to whose numbering units (21b) additional blocks are attached, which at a constant, predetermined distance from the printed number, print a cutting mark associated with the respective security paper, on an edge of the sheet which is subsequently cut off. At the time of subsequent cutting of the pile of sheets into strips, these cutting marks define those cutting edges which represent the reference edges of the security papers determining the exact reading position, at the time of subsequent automatic reading of the number of the security papers in circulation. For this purpose, the cutting marks are read by a reading unit (28) located on the strip-cutting unit (27), which unit (28) controls the feed device (26) moving the pile of sheets successively into the cutting positions. In this way it is ensured that the distance between the position of the number to be read and the reference edge of a security paper, which is critical for reliable automatic reading of the numbers, remains virtually constant for all security papers, irrespective of all possible tolerances occurring in the processing of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.