Method for replenishing developer in an automatic developing machine for photosensitive lithographic printing plate

摘要

The electric conductivity of the developer is measured in a constant cycle and after replenishing the aging replenishment amount setting value at constant time intervals and replenishing the processing replenishment amount setting value every each processing of plates in a fixed area by using a development replenisher containing an electric conductivity adjusting agent of elevating the electric conductivity, the electric conductivity calculated value is calculated from the aging replenishment amount and the processing replenishment amount and based on the results of comparison between the electric conductivity calculated value and the electric conductivity measured value, the values of aging replenishment amount setting value and processing replenishment amount setting value each is increased or decreased.