<p>The invention relates to a silver master plate recovery solution for recovering the ink receptivity of an image area on a silver salt photographic plate for offset printing by reducing the silver oxide layer of said image area, said silver master plate recovery solution characterised in that it comprises: (a) a hydrazine component for reducing said silver oxide layer of said image area; (b) a quaternary ammonium salt cationic activator which enters the minute pores on said image area to lower the polarity of said image area which had been made porous by said hydrazine component; and (c) water. o</p>
