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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

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    What size is "very small" and what is "Isolated"?
    – Rafael
    Commented Mar 27, 2017 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
    Commented Mar 27, 2017 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.
    – user82991
    Commented Sep 10, 2018 at 21:36

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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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