Compatible Epson C1700 CMKY Printer Toner Cartridge for Aculaser 1700 C1750N C1750W CX17NF

Selenium drum is the core component of laser printer, and also one of the hardware that is prone to various failures. And toner as a supporting basic consumables, including laser printers, toner cartridges, toner

Functions, characteristics and working principle of selenium drum

The selenium drum is the core of the optical printer. Like the engine of a car, it is mainly made of electro photosensitive semi mannan. Its working principle is the process of "photoelectric conversion". Photosensitive semiconductor not only has the common characteristics of common semiconductor, such as thermal excitation, change of resistivity after doping, but also has photoconductive characteristics. In other words, after the photosensitive semiconductor is exposed to light, its resistance can drop to one tenth to ten thousandth of its original resistance The selenium drum is used as hardware and consumables in the laser printer, which generally accounts for about half of the price of the whole machine. At present, the commonly used photoconductive materials are selenium arsenic (Se in s) and cadmium sulfide (CdS). Several kinds of organic photoconductive materials are called selenium drums because most of the earlier selenium drums are made of selenium containing materials.