How to choose a laser printer fuser film? A comprehensive analysis from heat conduction to tear resistance.
- What is a fuser film?
The fuser film is a thin film of special high-temperature resistant material used for fusing when copying or printing by a copier or printer. It has high thermal conductivity and replaces the traditional fuser roller. It is mostly used in medium- and high-speed laser printing or copying equipment.
- Fuser film working principle:
What is the function of the fuser film?
When the paper passes through the printer fuser (fuser film sleeve), the originally loose toner will melt and fuse with the fibers in the paper. Then the fuser transports the paper to the output tray, and you get the final printed page. In addition, the fuser will heat the paper itself, which is why the paper coming out of a laser printer or copier is always hotter.
As a key consumable in the heating component of a laser printer, the performance of the fuser film directly affects the printing effect. In order to ensure that you choose a high-quality fuser film sleeve, we need to pay attention to the following key aspects:
1. Thermal conductivity (fixing firmness)
The thermal conductivity of the fuser film is crucial because it is directly related to whether the toner can be firmly fixed on the medium. If the thermal conductivity is poor, part of the softened toner may be flipped onto the fixing film or the lower roller, or even form agglomerates, thereby damaging the heating component.
2. Isolation performance
The isolation of the fixing film is crucial, as it ensures that the toner can be transferred to the print medium without loss. At the same time, the fixing film itself does not have residual toner, thereby maintaining its long-term working stability and avoiding the occurrence of ghosting. The quality of the isolation performance is inseparable from the coating material used in the fixing film and the exquisite production process.
3. Stiffness and flexibility
The stiffness of the fuser film sleeve is crucial to its performance and use effect. On high-speed printers, the fuser film used usually has a high stiffness to ensure that it can remain stable and reduce noise during the operation of the machine. If the stiffness is insufficient, the fixing film may produce harsh noises when rotating, such as “crackling”, while the fuser film with appropriate stiffness will only make a slight “rustling” sound.
In addition, a fuser film with too low stiffness is prone to wrinkles during use, affecting the printing quality, especially when printing black images, unevenness may occur. However, too high stiffness can also cause problems, such as difficulty in heat conduction, which in turn affects the firmness of the fixing.
4. Tear resistance
The tear resistance of the fuser film should not be ignored either. It is directly related to the service life and stability of the fixing film. When the machine is in poor working condition, such as when a paper jam occurs or foreign matter invades the fixing component, the fuser film sleeve with insufficient tear resistance is more likely to break, affecting the printing effect and the normal operation of the machine.
- The surface performance of the fuser film has a significant impact on its use effect. Common surface problems include:
(1) Uneven thickness, especially the thickness difference in the circumferential direction, will lead to unstable fixing or damage to the film. While the uneven thickness in the busbar direction may cause the fuser film to move, thereby causing damage to the film.
(2) The uneven surface coating, such as too many orange peel lines, will affect the fit between the fuser film and the lower roller, thereby reducing the fixing firmness and affecting the printing quality of fine graphics.
(3) Defects such as particles, pits, pinholes, missing coatings or severe creases on the surface may cause incomplete transfer or loose fixing at the corresponding positions on the printed product due to their large size.
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