hp Color 9850mfp IMAGE CREATION PROCESS 5 .2 Charging process (Step 1) atively charge the surface of the photosensitive drum by wire discharge. The charging corona is provided The charging corona, having a gold-plated tungsten wire, is applied with a high DC voltage (minus) to neg- I OUTLINE with a charging grid plate to make charges on the surface of the photosensitive drum uniform. Photo- sensitive drums are provided for the four colors of Y, M, C and K.
[1] [2] [4] [3] [1] Drum [3] Charging corona [2] Charge (negative) [4] Charging grid plate 5 .3 Laser exposure process (Step 2) Charges on the surface of the photosensitive drum have a characteristic that when they are irradiated with light, they are neutralized and vanish. Using this characteristic, a laser beam is irradiated on the image an electrostatic latent image. A laser beam is irradiated on each photosensitive drum of Y, M, C and K cor- region to create an image by removing charges on the photosensitive drum. This image is referred to as responding to the four color data resolved by the image processing section.
[4] [1] [3] [2] [1] Write unit [3] Neutralized section [2] Laser beam [4] Charge (negative) 1- 41