Canon MF4500 Series Service Manual

Canon MF4500 Series Service Manual Manual pdf 40 page image

22 2-152-15Technical Overview > Image Formation System > Overview/Configuration > Print ProcessTechnical Overview > Image Formation System > Overview/Configuration > Print ProcessImage Formation SystemOverview/Configuration■ OverviewThe image formation system is the core of this equipment; it forms toner images on papers.The image formation system is comprised of the following components.The engine controller controls the laser scanner unit and high-voltage power supply circuitand forms images based on the video signals on papers.The following are the details of print process for this equipment and the functions of imageformation.Fixing assemblyCartridgePhotosensitive drumTo primary charging rollerTo developing cylinderEngine controllerTRPRIDEVHigh-voltagepower supplyVIDEO signalMain controllerCPULaser/scanner unitLaser beamFixing FilmPressure rollerTransfer rollerF-2-17■ Print ProcessThis explains the basic process of the operations that a printer executes for image formation.The print process of this equipment is divided largely into 5 blocks, 7 steps.Toner images are formed on papers by executing the steps of each block in order.The following are the blocks of print process and the steps.1. Static latent image formation blockStep 1: Primary chargingStep 2: Laser beam exposure2. Development blockStep 3: Development3. Transfer blockStep 4: TransferStep 5: Separation4. Fixing blockStep 6: Fixing5. Drum cleaning blockStep 7: Drum cleaningPaper pathRotational direction ofthe drumElectrostatic latent image formation blockTransfer blockFixing blockDevelopmentblockDrum cleaningblockDeliveryPick-up4. Transfer5. Separation6. Fixing2. Laser beam exposure3. Development7. Drum cleaning1. Primary chargingF-2-18