Patent ID: 8644748
Filing Date: 2014-02-04
Classification: G03G

Abstract:
1. A belt-roll fuser apparatus, comprising: a first internal pressure roll; a second internal pressure roll; a fuser belt, the fuser belt being supported by at least the first internal pressure roll and the second internal pressure roll, the first internal pressure roll and the second internal pressure roll being configured to engage an external pressure roll to define a fusing nip, wherein the first internal pressure roll and the second internal pressure roll have radii that are each less than a radius of the external pressure roll; a third internal pressure roll, the third internal pressure roll being configured to engage the external pressure roll to define the fusing nip, the third internal pressure roll interposing the first internal pressure roll and the second internal pressure roll; and a passive belt support, the belt support being configured to interpose each of the first, second, and third internal pressure roll for preventing deflection of the belt away from the external pressure roll at the fusing nip when the first internal pressure roll and the second internal pressure roll are engaged.