Patent ID: 7507526

Claim:
A method for developing a plurality of imaged positive-working printing plate precursors each having a single radiation-sensitive coating, the method comprising: contacting a portion of at least one of said imaged printing plate precursors with an aqueous developer comprising an organic solvent, a dispersing agent and a weak base, and having a pH between about 8 and less than about 13; adding to the aqueous developer an effective amount of an aqueous regenerator to maintain the activity of the aqueous developer, the aqueous regenerator comprising an organic solvent, a dispersing agent, and an effective amount of at least one strong base such that the pH of the aqueous regenerator is greater than the pH of the aqueous developer by at least 0.5 pH unit, wherein the K b of the strong base is greater than the K b of the weak base; and after adding the aqueous regenerator, contacting a portion of at least one additional imaged positive-working printing plate precursor with the aqueous developer.