| 摘要 |
PURPOSE:To set the density potential of a photosensitive body to a uniform density level by adjusting the quantity of light of an optical system capable of projecting light on an optional axial position on the photosensitive body according to development density characteristic information on the photosensitive body which is stored previously. CONSTITUTION:This device is provided with a ROM 12a as an information member for storing previously the development density characteristic information on development on a photosensitive drum 3 as the photosensitive body by exposure from an exposing means to a reference reflecting plate and a controller 12 as a light quantity adjusting means which adjusts the quantity of light projected from the optical system in the axial direction of the photosensitive drum 3. Namely, the driving pulse width of the semiconductor laser of a laser scanning system 11 is adjusted so that the development density of the developed photosensitive drum 3 is preset development density, and the quantity of the laser beam projected from the semiconductor laser can be adjusted in beam diameter units. Consequently, the density potential of the photosensitive drum 3 is set to the uniform density level. |
