CANON5000 printer Why fight black hair is true? Other colors can beat it? Playing black hair is true because black ink is blocked, usually is the first time such a case, you can also run the cleaning program for cleaning. But a long time, this method does not work. To solve, there are several ways:     1, the printer off, remove the cartridge with a disposable syringe fitted ethanol (concentration 85%), and the black cartridge into the cartridge attached note alcohol. Note After several times, dried, loaded, clean the print head, generally more light can be resolved.     2. If not, the print head removed and placed in dry (concentration 85%) of alcohol soak day, then half a day to dry out, then loaded on the printer and then comes the cleaning program for cleaning several times, recalibrate what the print head, generally can be resolved.     3, this is not enough to sell a printer or printer repair landlord, buy a bottle professional cleaning solution (30 yuan), according to the two steps,     4, if OK, then there is no repair value, and for a new print head and buy a new printer about the price.     5. If you are using a co-ink system, should allow the printer to work every day, or to wash the print head every day, so it will not block the print head. And it does not cost much ink. I help with the ink system for five years, only for the two printers. The number of pages printed per day in more than 200 A4 paper. Printers have seen how cost, ink is not much money, usually less than 300 yuan a year.    Well, you can try.