Canon i-SENSYS LBP5300 Series Service Manual

Also see for i-SENSYS LBP5300 Series: User guide User guide

Contents

Chapter 22-9F-2-9Step 2: Primary chargingAs a preparation for the latent image formation, the surface of the photosensitive drum is charged with a uniform negative potential in this step.The charging method of this printer is to charge directly to the photosensitive drum surface from the primary charging roller, which is interlocked with the drum.The primary charging roller is made of a conductive rubber. To charge the drum surface negative, the high-voltage DC bias is applied to the primary charging roller.F-2-10Step 3: Laser beam exposureThe latent image is formed on the photosensitive drum by the laser beam in this step.As the laser beam scans on the negative charged photosensitive drum, the potential on the exposed area is neutralized and the negative potential is removed fromthe drum surface. This area forms an electrostatic latent image.F-2-112.4.1.4 Development block 0013-7406/ i-SENSYS LBP5360 / i-SENSYS LBP5300The electrostatic latent image on the photosensitive drum surface is visualized by applying toner in this block. This printer utilizes the contact development method,that keeps the developing roller touching the photosensitive drum. On the other hand, there is a flexible developing blade that gently touches the developing rollersurface where toner is uniformly sticking around the roller.The toner (developing material) used in this printer is a non-magnetic single-component toner, composed of resins, etc.Step 4: DevelopmentThe toner is adhered along the electrostatic latent image on the photosensitive drum surface by the contact development method in this step.The toner (developing material) is non-magnetic single component type and is charged negative by the friction caused by the rotating developing roller against thedeveloping blade.This negative charged toner contacts with the photosensitive drum. As the area of the drum surface where the laser beam exposed has higher potential than thedeveloping roller, the negative charged toner transfers to this higher potential area. Thus the latent image is finally visualized.Photosensitive drumLEDDC biasPhotosensitive drumPrimary charging rollerLaser beamUnexposed areaExposed area