Patent ID: 7239830

Claim:
A color image forming system comprising: a photosensitive drum; a charger which charges the photosensitive drum; a laser scanning unit which is installed opposite a first side of the photosensitive drum, radiates light onto the charged photosensitive drum, and forms an electrostatic latent image thereon; a plurality of developing units respectively having toners of yellow, magenta, cyan, and black, arranged at different heights relative to an outer surface of the photosensitive drum, to develop the electrostatic latent image with the toners, the developing units each comprising a developing roller maintained at a developing gap with respect to the photosensitive drum; a transfer unit which transfers the developed image onto a piece of paper; and a fusing unit which is installed opposite a second side of the photosensitive drum and fuses the transferred image onto the piece of paper, wherein the developing units are arranged based on the respective toner colors in the order of magenta, cyan, yellow, and black from the laser scanning unit to the fusing unit.