Fusing Element Surface Heating for Energy Efficiency
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Solution Overview
Problem
Existing methods for fusing recording materials on a medium require significant energy due to the need for high temperatures and large heating elements, which limits design options and increases energy consumption.
Innovation Solution
A method where heat is applied only to the surface of the fusing element just before the fusion nip, using a reflector assembly to focus radiation efficiently, reducing heat penetration into the element and minimizing energy loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If heat is provided to the fusing element in advance to maintain fusing temperature, then the fusing process can be performed continuously, but a relatively large amount of energy is consumed to heat and maintain the entire mass of the element
Solution Approach 1:
The patent applies preliminary action by providing heat to the fusing element just before the recording material and medium reach the fusing nip, rather than heating in advance. The heat is provided at the optimal moment when it is immediately needed, eliminating the need to maintain temperature continuously throughout the element mass.
Solution Approach 2:
The patent applies local quality by heating only the surface of the fusing element at the specific location where fusing is needed, rather than heating the entire element. This localized heating approach reduces energy consumption while maintaining effective fusing temperature where required.
2Stability of the object's composition
If a large mass fusing element is used to maintain stable fusing temperature, then temperature stability is improved, but a relatively large amount of energy is required to heat the entire mass
Solution Approach 1:
The patent applies local quality by concentrating heat application only at the surface of the fusing element where fusing occurs, rather than heating the entire mass. This maintains temperature stability at the critical interface while minimizing energy consumption by avoiding heating of the bulk material.
Solution Approach 2:
The patent extracts the heating function from the bulk element and applies it only at the surface where needed. By separating the heating location from the element mass, the system achieves temperature stability without the energy penalty of heating and maintaining the entire mass.
3Temperature
If conventional heating methods are used to heat the fusing element, then sufficient heat is provided for fusing, but heat penetrates into the underlying material and a relatively large amount of heat is needed
Solution Approach 1:
The patent applies preliminary action by providing heat to the fusing element surface just before the fusing nip arrives, so that heat is available exactly when needed. This timing prevents heat from penetrating deeply into the underlying material while maintaining sufficient surface temperature for effective fusing.
Solution Approach 2:
The patent applies parameter changes by altering the timing and location of heat application. Instead of continuous or advance heating, the system changes the heat provision parameters to apply heat only at the surface and only when immediately needed, reducing thermal penetration and energy loss.
4Temperature
If a conventional heating assembly is used to provide sufficient heat for fusing, then the fusing process is effective, but the assembly requires a relatively large space near the heating location
Solution Approach 1:
The patent applies local quality by concentrating the heating function at a specific surface location of the fusing element rather than using a large distributed heating assembly. This localized approach reduces the space required for the heating system while maintaining effective fusing temperature.
Solution Approach 2:
The patent extracts the heating function from a large conventional assembly and implements it in a compact form at the precise location where heat is needed. By separating the heating function from bulk heating systems, the design achieves effective fusing in a reduced space footprint.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces energy usage by heating only the surface of the fusing element, allowing for a compact design and efficient heat transfer, minimizing heat loss to the surroundings and the element's mass.
Implementation Method 1
For providing heat, it is well known to provide heat radiation generated by a suitable device, such as a lamp
Implementation Method 2
it is known to use a reflector assembly
Implementation Method 3
The radiation is focused towards both the second focal point of the first elliptical reflector section (f2) and the second focal point of the second elliptical reflector section (f2')
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3~4
AI summary
In a method for fusing a recording material on a medium, a fusing element is radiated close to and upstream from a fuse nip. Thus, the heat that is provided has very little time to penetrate the fusing element and thus remains at a surface of the fusing element. Therefore, the fusing element does not need to be heated thoroughly, which would require a substantial amount of time. Consequently, in the method, heat may be provided on demand and an energy efficient fuse method is thus provided.