Image forming apparatus and de-skew method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorJong-hyon Yi
Life of this patent
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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.
Claims18
A de-skew method of an image forming apparatus, the deskew method comprising:
- 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
- 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 an absolute value of the calculated skew angle is equal to or greater than the first threshold.
An image forming apparatus, comprising:
- a read unit to read an image on a print medium fed through an automatic document feeder (ADF);
- a calculation unit to detect a leading edge of the print medium and to calculate a skew angle of the read image;
- a determination unit to compare the calculated skew angle to a first threshold and to determine whether to perform a deskew operation;
- and
- an output unit to set skew compensation levels based on the calculated skew angle and to perform different de-skew operations according to the set skew compensation levels to output a de-skewed image when an absolute value of the calculated skew angle is equal to or greater than the first threshold.
Dependencies are inferred from the claim text.