| 摘要 |
PURPOSE:To improve the reproducibility of a half tone (photograph) original without deteriorating the reproducibility of a line drawing original, by providing an electrifying condition adjusting means for changing the initial electrification potential of a photosensitive body, an exposing condition adjusting means, and a developing condition adjusting means, so that the respective adjusting conditions can be set by the same switching device. CONSTITUTION:To an electrifier 1 of an electrostatic imaging machine for obtaining an imaged image in process, an electrification quantity adjusting device 15 being an electrifying condition adjusting means is connected, and to an exposing lamp 3, a lamp light quantity adjusting device 16 being an exposing condition adjusting means is connected, and the lamp light quantity adjusting device 16 is adjusted so that, for instance, with respect to the lamp potential, the light quantity of 10-40% drops under a low light quantity condition, comparing with a high light quantity condition, and set so that the exposure light quantity can be switched to two stages of a low light quantity and a high quantity. Also, to a developing device 10, a developing sleeve peripheral velocity adjusting device 17 being a developing condition adjusting means is connected. Each adjusting device is connected to a switching device 18, and the switching device 18 changes and sets simultaneously a copy condition by selecting and depressing a selection mode key of a selecting device 19. |
