As for the laser printer, because its principle of work basic issimilar, therefore the very many quality breakdown also is the manykinds of types may use in common. The laser printer when uses thecertain fixed number of years, after namely output certain quantitytype, its printing quality all can have the drop, some parts in theuse to the limit time limit, can appear the printing quality the flaw.Some is because we not too are familiar to the laser printer principleof work and the performance, therefore in operation time has notadjusted it the optimum condition or also is at under the wrongcondition, but also has the use material not to conform to the gaugeto grade, causes the output effect not to be good, this is we calledit "is not the breakdown breakdown". It generally does not affect theprinter the normal work, but prints the result actually is unable tolet person satisfaction and so on. Under introduces some printingquality questions and solution.