Calculation of toner blackness

Laser printer is designed mainly for the office, so the average OEM density value is around 1.48. And in China some types of printer, is used to print media such as film or sulphuric acid paper, the printing medium of fiber after special chemical treatment, compared with the ordinary printing paper, toner resin more difficult to melt infiltration into the paper fiber, so the requirements for the toner is relatively high. In order to ensure the toner cartridge condition, my company to provide toner can satisfy this requirement, the average emissivity values in general about 1.50 (individual models average emissivity values up to 1.55, such as Xerox P8e). We usually have such a habit, think better print words more black toner. But sometimes toner, other factors may also cause this illusion, such as toner fixed degree poorer, only adsorbed on the surface of the paper and not enough to penetrate the fiber paper, then toner particles on the surface of the paper most accumulation on the surface of the paper, the light absorption rate is very high, give people the feeling is very dark, which is some users said printing proofs do not see, touch it to know the reason why the black not black. But in fact, this toner fusion point, print the words is not strong, is not a good toner.

Of course the blackness of the high also has its negative effects, is a certain amount of toner, in the average coverage rate, the number of pages to print relative reduction.