| 摘要 |
PURPOSE:To improve operability and to simplify adjustment when a photosensitive body is exchanged in a market by storing the operation result of exposure voltage as reference exposure voltage data based on selective reference value change mode setting. CONSTITUTION:The output of a CPU controls a lamp regulator 17. A storing means 30 in the CPU stores the set reference exposure voltage data and a storing means 31 stores change data about copying image concentration. The contents of the storing means 30 and 31 are sent to a buffer 32 and specified operation is performed, whereby the exposure voltage of a lamp 16 is determined. Temperature data detected in a thermistor 18 is inputted in the buffer 32 and those operation results are selectively updated and stored in a means 30 through a route 33. Therefore, exposure amount is controlled with the rise of photosensitive temperature detected in the thermistor 18 so as to obtain appropriate image concentration. |
