The prerequisites for the fact that the “golden” discs are worse than the “aluminum” ones are laid down in the recording technology itself. Standards for compact discs provide that the reflection of the laser beam from bright areas should be at least 70%.
Such requirements are met for stamped discs. However, recordable discs, unlike stamped discs, have an additional recording layer of organic polymer. This layer has limited transparency. Therefore, standards for recordable discs allow that reflection from highlights should be at least 65%. Continue reading
“Stamped” discs (or, if you want, “aluminum”) can be made in various ways. The most common is, to be precise, injection molding, rather than stamping. Modern technologies make it possible to achieve extremely high manufacturing accuracy, however, compact discs made in this way will be prohibitively expensive. Therefore, really “stamped” discs contain many single, at least errors. The main thing is that the available number of errors does not cause a decrease in read speed. Continue reading
Fall to the surface with a characteristic “crackle”. At the same time, they tear off microscopic particles from the surface, consisting of particles of the working layer of the carrier.
It is believed that drives can withstand thousands of “takeoffs” and “landings” of heads. Therefore, the rule – do not turn off the computer during the working day – is relevant. The fewer on-offs, the more likely the computer will not fail, the higher. Continue reading