Patent · US Expired

Fuser mechanism having crowned rolls

US5319430A · kind A · utility

30Cited by
15References
3Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 4, 1993
Grant dateJun 7, 1994
Priority date—
Expiry dateJan 4, 2013

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G2215/2064
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A roll fuser assembly including a fuser roll and a pressure roll. The rolls are crowned and are supported in pressure engagement with each other to form a fusing nip. The pressure engagement of the rolls eliminate nonuniform nip loading in wide fusers as well as providing uniform velocity through the fuser roll/pressure roll nip. It is preferred that the crowned profile of one of the rolls be substantially to the center of the roll and that the other be offset therefrom. It is further preferred that the diameters of each of the rolls be substantially the same at each end.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.