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.
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Wikipedia about laser printing
Laser printing is an electrostatic digital printing process.
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
Attractive selection of printer inksThe largest selection of printer inks can be found in computer stores, large sales centers for printer accessories and on the Internet.
Of course, a large amount of the goods being served somewhere does not have to prove its highest quality immediately, however, the owners of the best quality stores are trying to have a reliably working printing assortment. This is very important to them, because different types of printer inks are available in many different places and customers dissatisfied with the services provided in one of the stores will certainly find other service providers selling print accessories very quickly. Meanwhile, having a good quality printer inks can become a regular source of income.
Attractive printer prices for tonersThe cheapest toners for printers can be found in computer and internet stores as well as in large shopping centers.
It should be emphasized that reaching for the cheapest printer toners does not necessarily mean that they will not have good quality.
This is because even replacements are produced according to generally accepted standards. In contrast, cheap printer toners can be released for sale by companies that can reduce the cost of their production or be covered by some kind of promotions or rebates.
Thanks to that, their buying does not strain the home or company budget and allows for even bigger savings.
On the other hand, it can be said that it allows the sellers themselves to acquire new customers.