Canon imageCLASS X LBP1238, Руководство по обслуживанию

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Image Formation Process
Description
Pickup
5. Separation 6. Fixing
Delivery
2. Laser-beam exposure
3. Developing
7. Drum cleaning
1. Primary charging
: Paper path
: Direction of the drum rotation
: Functional block
: Step
4. Transfer
Fixing
Transfer
Drum cleaning
Latent image formation
Developing
Block No. Process Description
Static latent image formation
block 1 Primary charging The surface of the Photosensitive Drum is uniformly charged with
negative potential.
2 Laser beam exposure With irradiation of laser beam, a static latent image is formed on the
surface of the Photosensitive Drum. (Image exposure: Area ex-
posed by laser is the image area)
Developing block 3 Development With the toner projection development method, toner that has been
negatively charged by the Developing Cylinder is attached to the
Photosensitive Drum.
Transfer block 4 Transfer Toner on the surface of the Photosensitive Drum is transferred to a
paper by applying positive charge to the Transfer Roller.
5 Separation With the curvature separation method, the paper is separated from
the Photosensitive Drum. In the case of thin paper which has low
elastic force, the Static Eliminator reduces potential on the back side
of paper to make the thin paper to be separated easily.
Fixing block 6 Fixing Toner on the paper is fixed on the paper using heat and pressure.
Drum cleaning block 7 Drum cleaning The Cleaning Blade removes the residual toner attached on the
Photosensitive Drum.
High Voltage Power Supply Control
Description
The High Voltage Power Supply applies high voltage biases to the following:
• Primary Charging Roller (inside the cartridge)
• Developing Roller (inside the cartridge)
• Transfer Roller
The high voltage biases are generated by the DC Controller controlling the High Voltage Power Supply.
2. Technical Explanation (Device)
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