Toner cartridges are the imaging material, and some friends will call it the toner or developer. Its composition is mainly composed of a resin, carbon black, magnetic iron oxide and other components. Toner can be roughly divided into two categories Magnetic and non-magnetic particles. Since the different laser printer print speed, resolution, melting point difference of toner has different requirements. Therefore, users do not think that as long as the toner cartridges filled to be able to use later, when the choice must be selected in the corresponding model, in order to get a good print quality. Restaurant sales of supplies accessories hundred percent genuine original, please rest assured purchase! ! ! Konica Minolta security check security labels security labels Front: security label on the back: Laser stay bottom: surface rendering is enabled when the query process random yellow, blue fluorescent light of a fluorescent spots, opened this security labels, laser holographic exposing the underlying. Second, the authenticity of the query: 1, please enter the security label on the back of the 20 security check password sent to 106,695,887,808. 2, dial 4006788315 and follow the voice prompts. To aim 3, check online: http: //www.konicaminolta.com.cn/business/products/carbonpowder/queryfw.htm three confirmed as genuine, the white seal affixed to uncover ease of use. Cheap, guarantee silty fine, print quality and number of copies! Quality and credibility is the eternal pursuit of my company! Timely and accurate provision of quality services, from the perspective of customer needs is our aim remains unchanged!