When it comes to defining the real differences between ink and paint, it's largely up to each company's discretion.

However, ink and paint do have distinct characteristics.

While there are edge cases where paint may be used as ink and vice versa, we'll focus on general classifications for this article.

Therefore, readers shouldn't consider the following information as absolute truth (you'll see why shortly).

General Characteristics And Uses of Ink

Ink is a solution commonly found in printmaking workshops and the primary medium in pens.

Ink typically consists of dyes—pigments dissolved into a solution.

It's primarily designed for writing, drawing, and everyday applications.

Generally, ink flows much thinner (similar to water), which relates to its use in writing instruments like pens.

Whether using a ballpoint or fountain pen, ink must flow effortlessly from the barrel. Thick ink can clog pen tips, especially in ballpoints where it causes hand fatigue during extended use.

Regarding permanence:

While inks penetrate surfaces, they often fade when exposed to natural elements and ultraviolet light. For permanent display pieces, applying a varnish or protectant is recommended.

Though mainly used in printing presses, pigment-based ink (more similar to paint) is the primary medium for silkscreen printing (e.g., graphic t-shirts, hats, bags).

General Characteristics And Uses Of Paint

Unlike ink where pigments dissolve into a water-like solution, paints form differently.

Paints typically combine pigments (synthetic or natural) with a medium like gum arabic or linseed oil. Rather than dissolving, these mediums carry pigment to surfaces.

Instead of penetrating surfaces like ink, paint rests on top. However, you can't simply scrape paint off canvas as pigment becomes trapped in the surface weave.

Paint application typically requires brushes or palette knives, though exceptions exist like spray paint.

Surfaces For Using Inks And Paints

Given ink's thin consistency, lower weight (lbs/gsm) papers work well since bleeding isn't a major concern. However, for liberal ink applications (like Sumi-E painting), thicker surfaces like 300+ gsm watercolor paper are ideal.

Conversely, paints like acrylic or oil require sturdier surfaces due to pigment weight. While possible on paper, paints often work best on canvas and other natural materials.

Mixed Media Of Paints And Inks

Many artists combine inks and paints to create stunning mixed-media works. If you're considering experimenting with both mediums, we highly recommend trying it—you can develop remarkable pieces.

Closing Thoughts On Ink vs. Paint

While these serve as general guidelines, don't interpret them as strict rules. For beginners, these definitions provide a helpful baseline when selecting art supplies.