NOVELTY - The depositing apparatus includes a coating station (1434) having nozzles for depositing photovoltaic dye to titanium sheet (1431) as the sheet moves relative to the coating station along a transport path. Solenoid controlled dosing valves (1435) independently regulate the rate at which the photovoltaic dye comes out from each of the nozzles. A conveyor transports the titanium sheet relative to the coating station along the transport path.    USE - Depositing apparatus for depositing layer of photovoltaic dye to titanium sheet coated with titanium dioxide. Can also be used in the manufacture of a primary electrode for a flexible array of photovoltaic cells. The flexible array of photovoltaic cells is used for generating electricity to power the desalination process using reverse osmosis, reducing the evaporation from the surface of the body of water by floating the array of photovoltaic cells on the surface, and heating a swimming pool by floating the array of photovoltaic cells on the surface and connecting the output of the array to an electrically powered heater.    ADVANTAGE - Enables reliably and independently controlling the rate at which the photovoltaic dye emerges from each of the nozzles of the coating station. Eliminates the risk of fire or explosion which could arise if the edge guide were electrically powered since the purely mechanical edge guide is provided upstream of the dye coater.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a method of applying a coating to a substrate using the depositing apparatus;    (2) a method of coating a substrate for use as an electrode in a flexible photovoltaic cell array; and    (3) a method of manufacturing an electrode for a flexible array of photovoltaic cells.    DESCRIPTION OF DRAWING(S) - The drawing shows the arrangement for applying a layer of dye to the coated titanium web.    Titanium sheet (1431)    Conveying direction (1433)    Coating station (1434)    Solenoid controlled dosing valves (1435)    Valve arrays (1436,1437)