Patent ID: 7435021
Filing Date: 2008-10-14
Classification: G03F

Abstract:
1. A developer replenishing method of a photosensitive lithographic printing plate including: developing an exposed photosensitive lithographic printing plate with a developer; and keeping a developer activity constant by replenishing with a replenisher, the method comprises repeating the following steps (1) to (10): (1) obtaining an integrating value of replenishment due to aging (I (2) obtaining an integrating value of replenishment due to processing (I (3) obtaining a value of an electric conductivity of the developer (d (4) calculating a sum of the integrating value of replenishment due to aging (I (5) when (I (6) calculating an operating value of electric conductivity (d wherein d (7) comparing the operating value of electric conductivity (d (8) when d (9) initializing I (10) returning to the step (1).