| 摘要 |
<p>PURPOSE:To record at a high speed by amplifying energy of irradiating light on a photosensitive body by constituting the device so that a reduced image of a light emitting element is formed as an image on the photosensitive body. CONSTITUTION:An LED chip 42 and a driver IC 41 thereof are loaded on a substrate 44 applied with wiring pattern of a light emitting substrate 36. The LED chip 42 is provided with LED element array 45 consisting of 64 pieces of LED elements whose lighting can be independently controlled. In a focus lens 43, the LED element array 45 is reduced to a vertical reduction ratio of 1/2 and image formed on an outer periphery of the photosensitive body drum. On the outer periphery shape range is exposed by 64 pieces. The light irradiating energy per area is four times compared with that when an unmagnified image system is utilized. Furthermore, twice the size in ratio of measurement suffices for the size of the LED element in the LED chip 42, and high resolution can easily be attained.</p> |
