So far I have my toner cartridges always bought the wholesale market with the 5 yellow letters - about 70 more. My Laserjet printed always work properly. As he indicated the toner replacement and I (supposedly genuine toner) began the purchased here, the color red is no longer true (red was more magenta) and gray hatchings were no longer printed. Presented to the print options to print in grayscale, the grayscale printed. I then also found that the backs of my printed sheets always had spots of color (magenta, blue). After I googled and I found such a similar problem case, I have cleaned the toner drawer and the contacts. Since then it works again. The cartridge, which I bought in the M ****, is "Product of Japan." These here is "Product of China". Possibly Is there still differences in quality. If the toner no longer buy here, act as gray written texts blurred - had previously also not the case. My time is also too good for such cleaning actions to me.
