Method and apparatus for checking printing and cutting quality in a package producing installation
US5241483A · kind A · utility
35Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1991 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Apr 18, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/543
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
During, for example, package production, printed sheets are carried by gripper bars through a cutting station of a machine. Front waste strips are removed from the printed sheets and are carried to an ejection device, but before reaching the ejection device, a camera and flash scanning unit scans the area of the front waste strip which has been marked with color registration marks and also includes at least a portion of a cut edge. An image processing unit compares this sample image to a reference image to conduct a quality check on the precision of the printing and cutting registration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.