The pressure rubber roller is also called the lower roller, and its function is to work with the heating roller to complete the hot-press fixing and transfer of the toner on the printing paper. The size of the pressure is controlled by the support springs at both ends. The pressure roller is generally made of high-temperature resistant silicone rubber. The pressure roller in some laser printers is made of honeycomb heat-resistant sponge, and the outer surface is a layer of PTFE film. It is more conducive to the separation of the printing paper and the pressure rubber roller to prevent paper jams.
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