Different formulations of the paste are used to produce conductors that basically consists of several major ingredients; (1) the
metal powders, which provide the conductive phase; (2) glasses or oxides, which act as a permanent binder and also promote sintering of metal powders during firing and enable binding of the functional film to the substrate; (3) organic vehicle, which disperse the functional and binder components to impart the desired rheological properties to the paste; and (4) a solvent or thinner that establishes the viscosity of the vehicle phase (Taylor et al., 1981; Lin and Wang, 1996; Rane et al., 2004; Sergent, 2007).