Canon i-SENSYS LBP5300 Series Service Manual

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

Contents

Chapter 22-12F-2-172.4.1.7 Cleaning block 0013-7472/ i-SENSYS LBP5360 / i-SENSYS LBP5300This block shows how to be cleaned for the residual toner on the photosensitive drum surface.In the transfer block, not all the toner is transferred from the photosensitive drum onto paper but some remains on the drum surface. This remaining toner is calledresidual toner or waste toner.The cleaning block is to clean the photosensitive drum surface in order to keep a clear image in the following print.Step 10: Drum cleaningIn this step, the residual toner on the photosensitive drum is cleaned.The cleaning blade scrapes off the leftover toner on the drum surface. The residual (waste) toner is collected in the waste toner container. Accordingly the drumsurface is cleaned.F-2-182.4.2 Image Stabilizaton Control2.4.2.1 Image Stabilization Control 0013-7556/ i-SENSYS LBP5360 / i-SENSYS LBP5300This control is performed in order to reduce the image density variations caused by environmental changes, and property changes of the photosensitive drum andtoner, etc.There are following controls executed as necessary.1) Environment change corrective controlThis is to control the related biases according to the temperature/humidity with the environment sensor.2) Image color gradation corrective controlThis is to calibrate the color gradation data in the video controller with the color misregistration/image density sensor.2.4.2.2 Environment related corrective control 0013-7557/ i-SENSYS LBP5360 / i-SENSYS LBP5300This control is to adjust the high-voltage bias values to obtain an optimum image according to the environmental changes.There is the environment sensor to detect temperature and humidity, and sends the detected information in form of the TEMPERATURE signal and theHUMIDITY signal to the DC controller.The DC controller monitors these two signals and determines the environment where the printer is installed.The DC controller requires command to execute this control to the video controller under the following conditions:- After power-ON- After cartridge replacement- After prescribed interval of the control execution- At the time the DC controller completes the prescribed number of printing after previous control execution- At the time the DC controller completes the prescribed number of printing after the cartridge replacement- At the time the environmental (temperature/humidity) relatively changes after the control execution- At the time the DC controller receives the command of the corrective control execution from the video controllerThe DC controller performs the following things in order to prevent image defects after this control.1) Optimize the primary charging bias value2) Optimize the developing bias value3) Request the video controller for the "color gradation corrective control".If the environment sensor failed to detect the temperature within the specified range, the DC controller determines the environment sensor faulty and notifiesthe video controller of "E066(warning: environment sensor abnormality)".Fixing sleeveFixing heater(Ceramic)Fixing pressure rollerTonerPaperWaste toner containerCleaning bladePhotosensitivedrumResidual (waste) toner