Many drums in original toner after use, the user can use again after adding, so also is to have separate toner for sale on the market. Through to add toner, would significantly reduce ( 减少) The use of the user consumes the material cost. Because the drum unit belong to the sealing of the one-time consumables, to add toner would destroy the drum sealing powder leakage phenomenon, toner particles is generally to the micron to the unit of measurement, if scattered in the air is invisible, making use of environment and office environment infection, leading to ( 原因) PM2。 5. Decided to a type of toner comprehensive quality mainly consider the following six aspects: blackness, bottom ash, these factors relate to each other, and influence each other, the reason of influence of these factors is related in this paper. A, black black degrees value calculation is blackness test ( TestMeasure) First to launch a number of strong beam, beam to graphics under test, and then reflect back to the blackness values tester, calculating the absorbed light beam, and through a fixed ( 固定的) It is concluded that the value of the calculation program. Color toner in print, volatile due to residual monomer in the resin is heated, produces the pungent odor, therefore national standards and industry standards of toner TVOC has carried on the strict limits. So as long as you buy printer or nonconforming product quality, won't because printing produces gas harmful to health. Resin in the carbon powder is more difficult to melt penetrating into the paper fibers, so high to the requirement of carbon powder. We usually have a habit that print on the black powdered carbon, the better. But sometimes the carbon powder, other factors may also cause this illusion, such as fixed on degree of carbon powder is poorer, only adsorbed on the surface of paper and not fully penetrating into the paper fibers, when most of the accumulation of carbon particles on the surface of the paper in the paper surface, for the light absorption rate is very high, feeling giving a person is very black, which is why some users said print proof need not see, touch the can know the reason why the black is not black. But, in fact, this kind of the carbon powder has high melting point, print the words is not strong, is not a good carbon powder. Blackness values on the high side, of course, also has its negative effects, is a certain amount of carbon powder, under a certain average coverage, the printed page relative to reduce. 2, bottom ash, bottom ash value is to use no words in black for tester to test print proof of the blackness of space value. Color is used in the paper in the laser printer toner fixing powder material. Black toner by bonding resin, carbon black, electronic agents, additives such as ingredients. Still need to add other color in the color toner pigment, etc. It also has relations with the degree of the white paper, namely the same kind of carbon powder in the bottom ash on the different printing paper value does not necessarily the same. In general, OEM toner bottom ash value is about 0. 05 ~ 0. 06, greater than zero. 06, visual results will feel print proof is a little dirty. ( 影响) The cause of the bottom ash value mainly and conducting properties of carbon powder ( Electrical) And the size of the toner particles. The stronger the conductivity, produce the bottom ash particles more fine more easily. Each type of printer require toner electrical generally is not the same, this is also our emphasis on specialized powder for one reason. In addition, because of the sensitive layer on the surface of the photosensitive drum damage caused by leakage, can also cause bottom ash, which can also explain when photosensitive layer is wear and tear, the printed page in broken leakage, can also cause bottom ash, which can also explain when photosensitive layer is worn, print the page in the affected area have obvious black mark. Processing of carbon powder, and then gently, intentionally tied in a plastic bag with a closed mouth. Color is used in the paper in the laser printer toner fixing powder material. Black toner by bonding resin, carbon black, electronic agents, additives such as ingredients. Still need to add other color in the color toner pigment, etc. Be careful, don't be so heavily crowded empty bags, or to the carbon dust in the air will not escape bag and powder puff. Discarded garbage bags, then you can close the can also be tied to a second bag. This pair of bagging will better ensure not carbon powder bag, lest something was thrown into the trash can, on top of it, it will prevent severe disturbance of toner. Carbon powder is hazardous waste, so can usually with ordinary garbage out. This is not a good idea, since the carbon powder on the copier toner transport system ( 系统) I will clear with carbon powder and particle pollution.