The main function of the laser printer cleaning system is to remove the "residual toner" that is not completely transferred on the surface of the photosensitive drum, so that there is a clean photosensitive drum in the next printing cycle. Theoretically speaking, the "toner image" should be completely transferred, but it is difficult to do so. In the process of printing, laser printers go through several steps of charging, scanning, imaging, and transfer. Due to potential migration, toner transfer, plus the influence of the light conductor "light decay"? The toner image "cannot be completely transferred to On the printing paper, the amount of toner remaining on the surface of the photosensitive drum directly affects the quality of the printing.
If the residual toner on the surface of the photosensitive drum cannot be completely removed, it will be carried into the next printing cycle, destroying the newly formed "toner image". Therefore, to thoroughly clean the surface of the photosensitive drum, a photosensitive drum cleaner is required. There are two cleaning methods for laser printers: rubber scraper cleaning and brush cleaning. Their role is to clean the surface of the photosensitive drum.
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