Developer for alkaline-developable lithographic printing plates

An image formed by the method comprising the steps of:

• (a) imaging an imageable element, the imageable element comprising an imageable layer over a hydrophilic support;
• and forming an imaged element comprising imaged regions and unimaged regions in the imageable layer;
• and
• (b) forming the image by developing the imaged element with an aqueous alkaline developer and removing one of the imaged regions and the unimaged regions of the imageable layer;
• in which:
• the aqueous alkaline developer comprises one or more water-soluble suppressors of the following structure:
• R1(CHOH)nR2
• in which n is 4 to 7;
• and
• either (i) R1 is hydrogen, aryl, or CH2OH;
• and R2 is alkyl group having 1 to 4 carbon atoms, CH2OR3 in which R3 is an alkyl group having 1 to 4 carbon atoms, CH2N(R4R5) in which R4 and R5 are each independently hydrogen or an alkyl group having 1 to 4 carbon atoms, or CO2H;
• or (ii) R1 and R2 together form a carbon—carbon single bond;
• the developer has a pH of about 10.0 to about 14;
• and
• the one or more suppressors together comprise about 10 wt % to about 30 wt % of the developer.