Method of producing a printing plate on a cylindrical printing-plate carrier in a rotary printing press
US7224490B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2003 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Nov 30, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04787
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of producing a printing plate on a cylindrical printing-plate carrier includes subdividing the printing-plate carrier by computation in terms of its width and axial length into at least two circumferential subareas. Then an actual transfer characteristic curve for each subarea is determined and compared by computation with a predetermined desired printing characteristic curve for each subarea to find a deviation. The method further includes calculating a correction to compensate for each deviation; receiving a digital image data in a first data format using a raster image processor; converting the digital image data into machine-specific image data including the position and the tonal value in the form of a bitmap; applying the correction for a predetermined desired printing characteristic curve for the edition print to the machine-specific image data using the raster image processor; and supplying the corrected machine-specific image data to an imagesetting unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.