What is a toner cartridge? What are its main components?
Publish Time: 2024-08-01
Toner cartridges, also known as photosensitive drums, are the most critical components of laser printers, copiers, all-in-one machines or fax machines, and their quality directly affects the final printing effect. Toner cartridges are mainly composed of aluminum basic substrates and photosensitive materials coated on the substrates. They are an important integrated part of the imaging components in laser printers. In laser printers, more than 70% of the imaging components are concentrated in the toner cartridges, so the quality of printing is largely determined by the toner cartridges.The main components of toner cartridges include but are not limited to the following:Photosensitive drum (drum core): This is the heart of the toner cartridge, which is formed by coating the surface of the aluminum cylinder with photosensitive conductive semiconductor materials. During the printing process, the photosensitive drum is irradiated by laser to form an electrostatic latent image, which then absorbs toner to form a visible image.Toner: This is an attachment that melts directly on the print medium to form the physical part of the printed content. Different models of toner cannot be universal and need to be matched according to the specific model of the toner cartridge.Powder bin: A warehouse used to store toner. Some powder bins are also equipped with agitators to ensure that toner can be smoothly provided to the photosensitive drum.Waste toner bin: used to collect waste toner remaining on the surface of the photosensitive drum. During the printing process, not all toner can be completely transferred to the print medium, and some residual toner will be collected in the waste toner bin.Cleaning scraper: responsible for cleaning the residual toner that has not been transferred on the surface of the photosensitive drum to ensure the cleanliness and accuracy of the next imaging process.Charging roller: responsible for eliminating the residual potential on the photosensitive drum and preparing for the next imaging process.Magnetic roller: during the development process, the magnetic roller attracts the toner to its surface and forms a toner layer of a certain thickness under the control of the powder discharge knife, so that the toner carries a certain amount of friction charge.Powder discharge knife: controls the amount of toner on the surface of the magnetic roller and ensures that the toner can be evenly and stably supplied to the photosensitive drum.Other auxiliary components: such as transfer roller, developing roller, etc., also play an important role in the printing process of the toner drum. The transfer roller is responsible for transferring the toner image on the photosensitive drum to the print medium; the developing roller is responsible for adsorbing the toner, charging it and transmitting it to the surface of the photosensitive drum to form a visible image.It should be noted that different brands or models of toner cartridges may have certain differences in structure and components. But in general, the components listed above are the more common and key parts of toner cartridges.
