In typography, "Vaseline" refers to a specific term used to describe a type of ink that is extremely wet or oily, making it difficult to control during the printing process. It is often associated with printing mishaps or issues such as smudging or uneven ink distribution. The term may also be informally used to describe overly glossy or slippery finishes on printed materials that can affect readability or aesthetic quality.
It's important to note that "Vaseline" is not a widely recognized or standardized term in typography, and its usage may vary among different printing and design communities. If you're looking for clarity on a specific aspect of typography, please provide more context!