Image forming apparatus and de-skew method thereof
US8588549B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2010 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Mar 9, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/00718
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A de-skew method of an image forming apparatus is provided which includes reading an image on a print medium fed through an automatic document feeder (ADF); detecting a leading edge of the print medium and calculating a skew angle of the read image; comparing the calculated skew angle to a first threshold and determining whether to perform a de-skew operation; and setting skew compensation levels based on the calculated skew angle and performing different de-skew operations according to the set skew compensation levels to output a de-skewed image when the absolute value of the calculated skew angle is equal to or greater than the first threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.