In a fixing station, operating according to the principle of cold fixing, of an electrophotographic printing system, it is provided, in addition to the regulation of the vapor concentration, an additional regulation of the duration of action of the vapor. of solvent (L) on the recording medium (AT). For this purpose, the latter is immersed, by means of a return roller (U3) and to a different depth depending on the conditions of use, in a tank (BH) containing solvent vapor.
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