What aspect of paper is ghosting directly related to?

Ghosting is a phenomenon that occurs when ink or toner from one side of a paper shows through to the other side, often causing a distraction or a decrease in the overall quality of printed materials. The aspect of paper that ghosting is directly related to is primarily its erasability, as this quality affects how ink interacts with the paper surface.

When paper is designed to be erasable, it often has a smoother finish and different absorbent properties, which can impact how well ink adheres to it. If a paper's surface allows the ink to easily be removed or altered, it may also lead to a greater likelihood of ghosting because the ink can be less firmly embedded in the paper fibers, allowing more of it to show through.

In this context, the other factors such as thickness, weight, and color of the paper do play roles in the overall printing performance, but ghosting is most closely tied to how the ink interacts with the surface of the paper, which is influenced by erasability. The combination of these properties determines whether ink will bleed through or remain properly confined to one side of the paper.