Patent ID: 7457557
Filing Date: 2008-11-25
Classification: G03G

Abstract:
1. A high precision-heat fusing device for heating unfused toner images in an electrostatographic reproducing machine, the high precision-heat fusing device comprising: (a) an endless rotatable shell defining an interior and having a first end, a second end, and an axis for rotation; and (b) at least six heating elements each having an end-to-end length and being selectively activatable for enabling fusing of images formed with regular toner in most of the document areas, and with a higher fusing temperature requiring toner such as MICR (magnetic image character recognition) toner only in a few areas of the document; said at least six heating elements being arranged end-to-end in series within said interior, for precisely controlling axial temperatures at spaced apart points in said endless rotatable shell.