LED writing method is superior to LD writing method in unit-downsizing, noise reduction, and energy saving.
Four LED heads are installed on the inner cover and the each PCDU is set in the specified location (on the drum) automatically when the inner cover closes. Among four color LED heads (cyan, magenta, black, yellow), no distinction are there between for black and for the other colors.
The writing process uses only the LED head, but the focus distance adjustment is performed by the LED head contacting on the LED spacer which is on the drum.
- LED Head
- LED Spacer
- OPC
- All LED heads use the same parts so you can swap them with one another for troubleshooting purpose.
- The LED spacer contacts on the drum, where the drum wears out gradually as it rotates. If worn PCDU (out of lifetime) is used, its focus turns to be blurry gradually.