Laser printing in Wikipedia
Laser printing is an electrostatic digital printing process. It produces high-quality text and graphics (and moderate-quality photographs) by repeatedly passing a laser beam back and forth over a negatively charged cylinder called a "drum" to define a differentially charged image.1 The drum then selectively collects electrically charged powdered ink (toner), and transfers the image to paper, which is then heated in order to permanently fuse the text, imagery, or both. As with digital photocopiers, laser printers employ a xerographic printing process. However, laser printing differs from analog photocopiers in that the image is produced by the direct scanning of the medium across the printer's photoreceptor. This enables laser printing to copy images more quickly than most photocopiers.
Źródło: https://en.wikipedia.org/wiki/Laser_printing
Repair is not worth it?
Computer repair often pays off. There are such failures that it is difficult to tell what really broke down. One of the more common problems is that the computer or laptop does not turn on. The cause can be almost anything - from trivial problems with the power supply, to serious defects on the motherboard. That is why it is worth taking the equipment for service, because the fault can be trivial and inexpensive to repair. Even if we do not have a guarantee anymore, but our computer still performs well, it's worth servicing,
Low Volume Labels
Printing labels for various types of products has grown significantly in recent times. Along with new and efficient printing machines, labels can be ordered even at very low costs without worrying about the exorbitant rate. Of course, large outlays are still cheaper, but this difference is not as big as a few years ago.
The potential market for low-cost prints is small, local companies producing small quantities of goods. Recently also a lot of home brewers begin to label their own beers, of course not for trade, but for example for contests. In addition, we have producers of honey, preserves and organic food, where the demand is rather small expenditure labels.