Sub-classification 1: Spots
Definition: White spots seen in solid image areas or black/colored spots seen where there should be nothing printed. The description "white spots" excludes those with toner cores.
Sub-classification 2  | Example  | Definition  | 
|---|---|---|
Black or colored spots  | Stains are visible as crisp black or colored spots.  | |
White spots  | White spots are visible inside solid images or halftone image areas because of missing toner.  | |
Spots with toner  | Toner aggregated inside the machine has been transferred to paper.  | |
White spots with toner cores  | White spots with pieces of aggregated toner in the center visible in solid color areas. Pieces of aggregated toner may be irremovable.  | |
Fish-shape stains  | Stains in the shape of small fish which appear to be swimming in the paper feed direction.  |