A method is described for producing image data to be used by a laser thermal transfer apparatus having a multiple channel printhead of laser beams for transferring different organic material with dopants from a donor onto on OLED substrate to form different color emissive sites on the substrate. The drive circuit includes a first transformer having a primary winding adapted to be coupled to a power supply module, and a secondary winding with a pair of terminals. The carrier fluid is composed of a first volatile hydrocarbon component selected from a C12-C14 hydrocarbon, a second volatile hydrocarbon selected from a C13-C16 hydrocarbon, and at least one non-volatile hydrocarbon component. The base station compares the electronic serial number to a database which determines whether the user corresponds to a fixed station or a mobile station. Detection circuitry, operatively coupled to primary circuit, is responsive to a characteristic parameter of the response signal indicative of the presence of the hand switch in proximity of the surgical handpiece.