Method for making lithographic printing plates

A method for preparing a lithographic printing plate, the method comprising the steps of, in order:

• (A) imagewise exposing a lithographic printing plate precursor comprising a substrate having a hydrophilic surface, and having disposed on the hydrophilic surface of the substrate:
• one or more radiation-sensitive imageable layers including an outermost radiation-sensitive imageable layer, and
• optionally, a non-radiation-sensitive hydrophilic overcoat disposed on the outermost radiation-sensitive imageable layer,
• to provide an imagewise exposed precursor comprising exposed regions and non-exposed regions in the one or more radiation-sensitive imageable layers;
• (B) off-press, treating the imagewise exposed precursor with one or more successive applications of a developer that is capable of removing either the exposed regions or the non-exposed regions in the one or more radiation-sensitive imageable layer,
• to provide a lithographic printing plate;
• and
• (D) mounting the lithographic printing plate onto a printing press for lithographic printing by applying a lithographic printing ink and a fountain solution to the lithographic printing plate, wherein the fountain solution is taken up by revealed hydrophilic surface of the substrate and the lithographic printing ink is taken up by remaining regions of the one or more radiation-sensitive imageable layers,
• wherein the developer is prepared in situ by diluting a developer concentrate with water,
• the developer concentrate having a pH of at least 2 and a % non-volatiles of at least 3% and up to and including 45%, the developer concentrate comprising:
• one or more compounds represented by the following Structure (I), in an amount of at least 0.2 weight % and up to and including 30 weight %, based on the total weight of the developer concentrate:
• R1—C(═O)—N(R2)—R3 (I)
• wherein R1, R2, and R3 independently represent hydrogen or a substituted or unsubstituted hydrocarbon group, or two or three of R1, R2, and R3 are combined to form one or more cyclic rings, and the total number of carbon atoms in the Structure (I) molecule is at least 7 and up to and including 33.