I'm studying computer graphics, and it's mentioned that laser printers, differently from inkjet printers, can't reproduce very small isolated dots. But I couldn't find an explanation why. The only understanding I have of how laser printers work is what is shown in the image below.

This is not an important part of what I'm studying, but I'm just curious. So a simple explanation would be enough.

enter image description here

  • 1
    What size is "very small" and what is "Isolated"? – Rafael Mar 27 '17 at 9:17
  • And do you mean the "very small isolated dot" is omitted completely, or is reproduced at a different size (which? Smaller or larger than intended?) – Andrew Leach Mar 27 '17 at 21:44
  • This image actually presents photocoying. Printer needs a charge inversion phase to snap the color to the exposed places. The difference isn't essential for the problem. – user287001 Sep 10 '18 at 21:36

Toner particles allways stick into a little larger area than the photo-exposed one. That's because the electric tractive force can be strong enough to hold the particles, even if it comes a little from aside.

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