Drive
The main motor drives PCDU through a coupling.
Toner Mixing
The toner moves as shown in the following drawing. The 1st mixing coil [A] moves the toner to the right side. The 2nd mixing coil [B] moves toner to the left side. Finally, the toner supply roller [C] supplies toner to the development roller [D]. By mixing the toner, the toner is circulated and evenly spread.
Development
The 1st mixing coil [A] and 2nd mixing coil [B] transport toner and the toner supply roller [C] provide the development roller [D] with toner. The electrostatic latent image on the surface of the OPC drum [E] takes on toner and turns into a visible toner image. The doctor blade [F] ensures that the toner is applied to the development roller with even thickness.
Charge, Charge Roller Cleaning, OPC Cleaning
To prevent ozone from being generated, the machine has a charge roller.
The charge roller [A] rotates with the OPC drum [B] to apply an electric charge evenly to the drum surface. However, if the charge roller is dirty, the applied electric charge becomes uneven. Therefore, the charge roller is always in contact with the charge cleaning roller [C], which cleans the charge roller.
The cleaning blade [D] mounted in the PCDU collects any residual toner that remains after charging. The blade is a counter blade, mounted opposite to the direction of rotation of the drum. The blade, always in contact with the surface of the drum, scrapes away residual toner. The removed toner is collected by the toner collection coil [E].
Next, the quenching lamp [F] flashes light onto the OPC drum to remove any residual charge
New PCDU Detection, and Set Detection
When a PCDU is placed in the machine, the ID chip [A] is read. Every time the PCDU is installed, the machine reads its ID chip [A] to detect whether a new PCDU has been installed. If you want to continue the present PM count, do SP7-805-001 (Counter Continue: Setting) before replacing the PCDU with a new unit.
More information about the PCDU unit can be confirmed with the SP codes listed below.
| SP No. | SP name |
|---|---|
| SP7-932-001 | PCDU Info.: Machine ID |
| SP7-932-002 | PCDU Info.: Class ID |
| SP7-932-003 | PCDU Info.: Maintenance ID |
| SP7-932-004 | PCDU Info.: New AIO |
| SP7-932-005 | PCDU Info.: Serial No. |
| SP7-932-006 | PCDU Info.: Install Date |
| SP7-932-007 | PCDU Info.: Sheets |
| SP7-932-008 | PCDU Info.: Distance |
| SP7-932-010 | PCDU Info.: Control Distance |
| SP7-932-011 | PCDU Info.: PM Chg Sheets |
| SP7-932-012 | PCDU Info.: PM Chg Distance |
| SP7-932-013 | PCDU Info.: Cleaning1Count |
| SP7-932-014 | PCDU Info.: Cleaning2Count |
Used Toner Transport
Used toner is collected from the PCDU by the used toner collection coil [A] and transferred via the used toner transport path [B] on the side of the PCDU to the toner cartridge’s used toner collection box.
