Term: ink bleed

Ink bleed refers to the unintended spreading or feathering of ink beyond its intended boundaries, typically occurring when ink is absorbed too quickly or unevenly into a surface. This phenomenon can result in blurry lines, loss of detail, or color distortion, and is commonly seen in printing, drawing, or painting on porous materials like paper, fabric, or unsealed surfaces.

In the context of painting and surface preparation (especially relevant to painters and contractors), ink bleed can also refer to:

• Stain bleed-through: When ink, tannins, or dyes from underlying materials (like wood knots, water stains, or previous markings) seep through a new coat of paint or primer, affecting the finish.
• Marker bleed: When permanent markers or inks used on walls or surfaces show through paint layers, especially if not properly sealed.

To prevent ink bleed, professionals often use stain-blocking primers or sealers before applying topcoats.