| abstract |
The invention relates to a developer mixture for developing exposed, light-sensitive reproduction layers which contain a diazonium salt polycondensation product. The mixture comprises water, a salt of an alkanoic acid and a surfactant and contains 0.5 to 15 percent by weight, in particular 1 to 10 percent by weight, of at least one salt of an alkanoic acid having 8 to 13 carbon atoms and 0.5 to 20 percent by weight, in particular 1 to 12 percent by weight, of at least one low-foaming, nonionic surfactant. These surfactants preferably include optionally modified block polymers formed from ethylene oxide and propylene oxide. n The invention also relates to a process for developing negative-working reproduction layers, of the composition indicated above, with the developer mixture according to the invention. |