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(8) Detection of a brand new Toner Cartridge
1. A brand new Toner Cartridge is installed.
2. The Front Door is closed. Then, the Power Switch is turned ON.
6. The toner Cartridge, which is detected as “not installed,” is stopped at the
developing position. Then, the Developing Roller is rotated.
According to the above-mentioned sequential operation, the Toner Cartridge is
detected as a brand new one.
3. The Toner Cartridge Rack is rotated to bring the Toner Cartridge at the develop-
ing position.
4. The Toner Cartridge Detection Sensor (PC8) detects whether or not the Toner
Cartridge is installed.
5. The Toner Cartridge Detection Sensor judges that no Toner Cartridge is installed,
since no light reflection is made with the Reflector placed under the Cover in the
brand new Toner Cartridge.
7. The Reflector placed under the Cover is pushed out in the Toner Cartridge with a
rotation of the Developing Roller. The Toner Cartridge Detection Sensor detects that
the Toner Cartridge is installed with the light reflection from the Reflector.
8. Other Toner Cartridges are stopped at the developing position respectively. If
the Cartridge is a brand new, sequences from 4 through 7 are repeated for each
Color Toner Cartridge.
No Toner Cartridge Installed
Toner Cartridge Installed
Reflector
4131M041AA
4131M042AA