Heating roller for fixing
US6252199A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2000 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Mar 29, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2053
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a heating roller for fixing which is constituted such that a heating resistor 3 is provided onto an inner circumferential surface 1a of a cylinder 1 with an insulating layer 2 lying therebetween and a cleavage layer 6 is provided onto an outer circumferential surface, electrical insulating properties of the insulating layer 2 are maintained satisfactorily for a long time. A maximum height (Rmax) of surface roughness of the inner circumferential surface 1a of the cylinder 1 is in the range of 0.8 of 50 .mu.m. A resistance value in the heating roller for fixing is partially adjusted easily. In a heating roller for fixing having a heating resistor 103 on a surface of a cylinder 101 with an insulating layer 102 lying therebetween, the heating resistor 103 is divided into a plurality of zones in an axial direction of the cylinder 101, and slots for adjusting resistance are formed in each zone. In a heating roller for fixing, a generated heat is prevented from dispersing, uniform heating can be performed, heat loss is reduced, and thus power is tried to be saved. A heating resistor 203 is provided to an inner surface of a cylinder 201, and an electrode member 205 connected to the heat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.