Patent ID: 8289355

Claim:
An image generating apparatus comprising: an image generator configured to generate an image on a photosensitive member by scanning the photosensitive member in a main scanning direction and a sub-scanning direction with an optical beam; an output controller configured to generate an adjustment pattern containing markers and a straight line object running along the main scanning direction using said image generator and output the adjustment pattern to a printing medium recorded with a straight reference line running in the main scanning direction, with the markers and the straight line object intersecting each other on the printing medium to allow a user to read an amount of deviation of the straight line object relative to the straight reference line at each position of the markers; an input unit configured to accept input of an adjustment parameter, which represents the amount of deviation of the straight line object at each position of the markers relative to the straight reference line; a conversion information generator configured to generate conversion information based on the adjustment parameter input by said input unit, the conversion information being used to correct deviation, in the sub-scanning direction, of the image generated by said image generator; and a conversion information storage configured to store the conversion information.