| 摘要 |
An image forming apparatus includes a writing unit including an image data generation unit that produces image data; a main-sub image magnification processing unit that performs image magnification processing in a main-scanning direction and a sub-scanning direction; a clock generation unit that changes a writing clock period; a correction map that retains image magnification information corresponding to a deformation of a recording medium caused by application of heat and pressure from a fixing unit; and a light-emitting device that irradiates the photosensitive element with light. The writing unit slightly changes the writing clock period so as to enlarge or shrink a formed pixel in the main-scanning direction and perform enlargement or shrinkage in the sub-scanning direction, and thus cancel an image deformation caused by the deformation of the recording medium and correct a change in an image magnification in the main-scanning direction.
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