Liquid ink pens use a water-based ink that flows smoothly and dries quickly, making them ideal for writing and drawing. The ink is stored in a reservoir and is delivered to the tip through a feed system, allowing for consistent ink flow. This type of pen often produces vibrant colors and can create fine lines or bold strokes, depending on the tip size. These pens are popular among students, artists, and professionals for their ease of use and versatility. Unlike traditional ballpoint pens, liquid ink pens can provide a more fluid writing experience, making them suitable for both everyday tasks and creative projects.