| 摘要 |
In a laser printer having a serving semiconductor laser 14 as the printer engine part 3, the irradiation of a laser beam R, forming one pixel, is divided into a plurality of lighting times, and non-lighting times in response to clock horizontal synchronous signals CLKH1 and CLKH2, generated by a printer controller 2, so that the form of a light energy distribution, on a photosensitive body, for forming one pixel is made substantially trapezoidal. With this construction, the form of each dot of pixels composing an image is made substantially trapezoidal. This can lead to improving the image quality of any curve d portion and the sloped-line portion of the image, by reducing jaggedness.
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