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<p><strong>Thermal conductivity</strong></p><p>A <a href="https://www.ascendimage.com/fuser-film-sleeve" rel="noopener noreferrer" target="_blank">fuser film sleeve</a> with poor thermal conductivity will not only cause the toner to not be firmly fixed on the media, but also turn the partially softened toner over to the fuser film sleeve or the lower roller, or even agglomerate and damage the heating components.</p><p><br></p><p>There are several ways to characterize the fixing fastness. One way is the method in the Ministry of Machinery Industry Standards, which uses abrasion tester to test, but this method is more difficult for users without conditions. ; Another method is relatively simple, that is, wipe with paper towels or absorbent cotton, but this method is very relevant to the tester and lacks comparability.</p><p><br></p><p>The fixability of the fuser film sleeve is very important for the matching relationship with the lower roller, toner, and media. Qualified lower rolls should have appropriate softness and hardness, fast resilience and other properties. The toner should also have a suitable softening point and permeability. Therefore, when a customer has problems with fixing while using the fuser film sleeve, including sticking powder, they should communicate with the customer more to see if there is a problem with the matching.</p><p><br></p><p><strong>Isolation performance</strong></p><p>A fuser film sleeve with good isolation will transfer the toner to the printing medium without distortion, and no toner remains on the fuser film sleeve, keeping the fuser film sleeve working well for a long time without ghosting.</p><p>The isolation performance has a great relationship with the coating material used on the fuser film sleeve and the production process.</p><p><br></p><p><strong>Flexibility</strong></p><p>A good fuser film sleeve should have proper stiffness. Generally speaking, the stiffness of the fuser film sleeve used on a high-speed machine is higher than that of a fuser film sleeve on a low-speed machine. For example, from a sensory point of view, the fuser film sleeve on the Hp6l model feels soft and collapsed, while the hp4000 series machine The fuser film sleeve on the model needs to be hard. Use one end of the fuser film sleeve to tap the concrete floor or wooden table gently. The fuser film sleeve used on the high-speed machine will make a metal-like sound, while the sound of the fuser film sleeve used on the low-speed machine is dull. many. A fuser film sleeve with insufficient stiffness is prone to "cracking" noises when the fuser film sleeve is rotated on the machine, while a fuser film sleeve with good stiffness makes a very small "sand" noise. A fuser film sleeve with too low stiffness is prone to wrinkles during use, and unevenness occurs when printing black images. However, the stiffness of the fuser film sleeve is too high, which may cause difficulty in heat conduction and decrease the fixing firmness.</p><p><br></p><p><strong>Tear resistance</strong></p><p>Tear resistance is another important mechanical performance index of the fuser film sleeve. A fuser film sleeve with insufficient tear resistance is prone to tearing when the machine is not working properly, such as paper jams or foreign objects entering the fixing assembly.</p><p><br></p><p><strong>Apparent performance</strong></p><p>The apparent performance plays a very important role in the use of thefuser film sleeve. Common apparent defects include:</p><p>(1) Severe thickness unevenness. If it is uneven thickness along the circumferential direction, it will cause the too thick area to be weakly fixed, and the too thin area will be easily damaged; if it is along the generatrix direction, it will cause The fuser film sleeve moves to the thick side of the film body, causing damage to the fuser film sleeve;</p><p><br></p><p>(2) The smoothness of the surface coating is not enough. If there are a lot of orange peel lines, the adhesion between the fuser film sleeve and the lower roller is not good, which will cause the fixation firmness to decrease, and the printing quality of fine graphics and text will decrease.</p><p><br></p><p>(3) Apparent adhesion particles, pits, pinholes, missing coatings, severe creases, this kind of defects are slightly larger in size, so in the corresponding position of the printed product, it will cause transfer failure or Defects of weak fixing.</p><p><br></p><p>Abrasion resistance</p><p>When other conditions are met, the abrasion resistance is the most important factor that determines the life of the fuser film sleeve. The abrasion resistance test includes actual printing and simulated printing.</p><p><br></p><p>In actual printing, the life of the same type of fuser film sleeve will be affected by many factors, such as toner, temperature fluctuations, printing environment (dust, humidity), paper, etc. At the same time, fluctuations in process parameters have a great influence on the wear resistance of the fuser film sleeve. Therefore, there will be fuser film sleeves from the same manufacturer, and different customers will react differently.</p><p><br></p><p>The consistency of simulated printing will be much better, but the correlation between simulated printing and actual printing is indeed a big problem. For example, whether there is the influence of toner, new paper and old paper, the influence of temperature control, etc.</p>
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