| 摘要 |
A developer circulating method in the flexographic plate making step, capable of preventing a dissolved chemical substance from adversely affecting a human body, having a high safety, capable of preventing an increase in the viscosity of the liquid, the deposition of a dissolved substance on an apparatus and a decrease in the longevity of the apparatus, capable of reducing the recovery time, and having high operability, operation efficiency and treatment efficiency; and an apparatus for practicing this method. The solid in a liquid containing a water-dispersed resin component of a flexographic plate material (3, 42) in a developer is coagulated with a coagulant, and the coagulated solid-containing liquid is subjected to solid-liquid separation to discharge the solid and reuse the liquid as a developer. In addition to the coagulation of the solid, pH regulation may be carried out. Also, pH regulation may be carried out after the developer has been subjected to solid-liquid separation, without carrying out the coagulation of the solid. <IMAGE> |
