Tends to occur when the ink drops are placed next to each other in a consecutive order or in a cluster of dots within a short time. Bleeding, spreading, and feathering causes print quality degradation including color shift, reduction in edge sharpness and solid area mottle which includes density variations in the areas due to puddling of inks. Intercolor bleeding is a well-known problem that occurs when ink from one color area bleeds into or blends with ink from another color area. In particular, when an abrupt change in one or more separations occurs, with ink of different colors on each side of the interface or edge, the dye may diffuse across the edge, generally following paper fibers, and resulting in a ragged, at best, or badly blurred, at worst, edge. Intercolor bleeding is pronounced where an area of black ink (relatively slow drying) adjoins an area of color ink (relatively fast drying); however, intercolor bleeding can occur at the interface between areas of any color inks that dry slowly enough to mix before drying.