Patent ID: 8422926

Claim:
A fixing device for fixing marking material to a substrate, comprising: a first roll including an outer surface; a second roll forming a fixing nip with the outer surface of the first roll at which is received a pre-heated substrate on which marking material is disposed; a release agent applicator system comprising: a supply of a release agent having a viscosity of from about 10 cST to about 300 cST; and a release agent applicator for applying the release agent to the outer surface of the first roll; and a thermal energy source for heating the outer surface of the first roll to a temperature of less than a boiling point of the release agent; wherein the first roll and second roll are operable to apply heat and a pressure of at least about 500 psi to the pre-heated substrate and marking material at the fixing nip to fix the marking material to the substrate, wherein the marking material comprises dry toner, the toner comprising a crystalline polymer material and an amorphous polymer material, the toner having a melting temperature which is lowered by heating the toner to a temperature above a threshold temperature during the pre-heating of the substrate and marking material.