| 摘要 |
According to a process for regulating the amount of copying light in a closed control loop of a photographic colour photocopier equipped with colour filters (3, 4, 5), the copying light influenced by the colour filters is selectively measured in the primary colours red, green and blue. A deviation resulting from the comparison of the real values with predeterminable set values is subdivided into a colour deviation and a luminosity deviation. The colour deviation is compensated by regulating the colour filters, whereas the luminosity deviation is converted into a correction factor for the lightning time, so that for each primary colour the product of the light intensity real value by the effective lightning time is constant and identical to the product of the light intensity set value by the lightning time set value. |
