Image forming apparatus for improving image quality

An image forming apparatus, comprising:

• a sheet position detector configured to detect a sheet edge of a recording sheet, including
• a light emitting unit having at least one light emitting element configured to emit light toward the recording sheet;
• and
• a light receiving unit having a plurality of light receiving elements, the light receiving unit configured to receive the light from the recording sheet;
• and
• a memory unit configured to store a plurality of values of light intensity of the light emitting unit and threshold values for output signals of the light receiving unit, each light intensity value and threshold value corresponding to different types of recording sheets,
• wherein the sheet edge of the recording sheet is detected using the light intensity and the threshold value stored in the memory unit.

An image forming apparatus, comprising:

• means for feeding a recording sheet;
• means for forming an image on the recording sheet fed from the means for feeding;
• means for detecting a sheet edge of the recording sheet fed from the means for feeding;
• and
• means for selecting at least one of a position correction mode and a non-correction mode for the means for feeding, wherein an image forming position on the recording sheet is corrected using position information detected by the means for detecting when the position correction mode is selected, and the image forming position on the recording sheet is not corrected when the non-correction mode is selected.