Registration control device for use in a rotary printing machine
US5329466A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1992 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Nov 12, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F13/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A register control device has a head which scans registration marks printed on a web, the scanning head having a row of discrete photosensitive elements arranged crosswise to the traveling direction of the web and in a plane situated above and parallel to the web. The scanning head has in the same plane a linear video bar situated parallel to the row of photosensitive elements. The device includes a microprocessor which selects the photosensitive element to be used according to the temporary sideways displacement of the web and controls the scanning operations of the linear video bar. The scanning head may also include a second row of discrete photosensitive elements arranged parallel between the first row of discrete photosensitive elements and the linear video bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.