| 摘要 |
Provided is an image forming apparatus outputs for each pixel, together with the pixel data, pixel position data which adjusts an irradiation position for each pixel of the laser light in a range of one pixel in a scanning direction, generates a pulse width signal at a pixel position corresponding to the pixel position data and having a pulse width corresponding to the pixel data, generates the laser light based on the pulse width signal, and corrects, via the adjustment by the pixel position data, the pulse widths of the pulse width signals to different values depending on whether the pulse width signals of the adjacent two pixels contact with each other. |
| 主权项 |
1. An image forming apparatus in which based on pixel data for each pixel included in image data, laser light having a pulse width corresponding to the pixel data is irradiated while scanning to an image carrier, thereby forming on the image carrier an image in which density tone is reproduced, the image forming apparatus comprising:
an image processing unit that outputs for each pixel, together with the pixel data, pixel position data which adjusts an irradiation position for each pixel of the laser light on the image carrier in a range of one pixel in a scanning direction; a PWM processing unit that generates, for the each pixel, a pulse width signal at a pixel position corresponding to the pixel position data and having a pulse width corresponding to the pixel data; a light emission drive unit that drives light emission of a laser diode based on the pulse width signal generated by the PWM processing unit, thereby generating the laser light; and a position determination unit that determines, via the adjustment by the pixel position data, whether the pulse width signals of adjacent two pixels contact with each other, wherein by referring to a result of the determination by the position determination unit, the PWM processing unit corrects the pulse widths of the pulse width signals to different values depending on whether the pulse width signals of the adjacent two pixels contact with each other. |
