Method of automatically controlling print quality in digital printing
US8264704B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2007 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Jul 29, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/00092
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of automatically monitoring and controlling print quality in digital printing with a first and second scanner capturing an image from different locations in the printing engine. In an exemplary embodiment, a first scanner captures an image from a surface internal to the print engine while an external scanner captures an image from a printed sheet. If the external print image quality is acceptable, the internally captured image is saved as a reference. The system periodically compares internally captured images with the saved reference and provides automatic image correction if the variation from the reference is within a correctable range. If the image variation is not within a correctable range, the system runs a new test print and creates a new reference image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.