The is 2 main compartment in the toner cartridge, one is the toner hopper and another is the waste toner hopper.
A: Toner hopper:
- Magnetic Developer Roller (MDR)
A cylindrical sleeve used to transfer image forming toner particles. The hollow cylinder is a non-magnetic material with a textured exterior surface. The interior contains a magnet producing a magnetic field to hold toner particles on the textured surface of the cylindrical sleeve.
- MDR Doctor Blade
Magnetic Developer Roller Doctor Blade is a precise leveling blade which serves to keep toner on the Magnetic Developer Roller to a single layer. This is a critical component since any damage or misadjustment to the blade will produce a noticeable effect on the quality of the image.
- MDR Sealing Blade
MDR Sealing Blade removes excess toner particles affixed to Magnetic Developer Roller as its outer surface rotates back into toner supply hopper and prevents toner particles from falling out of toner supply hopper onto paper along the length of developer sleev.
B: Waste tonner hopper:
- Organic Photoconductor (OPC) Drum
A cylinder coated with a substance whose electrical properties change when exposed to light. The drum is electrically charged and a laser within the printer changes the electrical charge on areas of the drum. Those areas then pick up toner and transfer it to the page
- Primary Charge Roller (PCR)
A rubber roller inside the toner cartridge which places the electrical charge on the Organic Photoconductor drum. It also erases the residual charge once the print cycle is complete
- Organic Photoconductor Wiper Blade
The Organic Photoconductor Wiper Blade cleans the surface of the Organic Photoconductor Drum by scraping off the waste (untransferred) toner into the cartridge waste hopper
Principle of printing
In order to solve problems that may occur while loading cartridges, it is helpful to understand the basic principle in which a printer works.
Printing consists of 6 stages - cleaning, conditioning, writing, developing, transferring, and fixing. The following explains each stage and the mechanical malfunctions that may occur in each stage.
An image appears on the center of the OPC drum. The aluminum cylinder of the drum is coated with a nontoxic, material that is sensitive to light.
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