Toner adhesion to substrates has been demonstrated to be a strong function of temperature. Previous work has suggested that particle deformation due to surface forces increases with reduced material stiffness at higher temperatures, thus increasing contact surface area and increasing adhesion. Toner Storage and Loss Modulus were measured for a variety of toners both on the individual toner scale and on the macro scale. These measurements showed material property changes in the region below the glass transition temperature that could account for the measured increase in toner adhesion. Toner adhesion measurements were then reconciled with transfer field forces to reveal an interaction between transfer fields, stored energy, and toner adhesion.