Xerox 3150 - Phaser B/W Laser Printer, Руководство по обслуживанию

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Summary of Product
Service Manual 4-7
4.2.7 Laser Scanner Unit (LSU)
This is the core of the laser printer. It converts the video data received from the computer into an electrostatic latent
image on the surface of the OPC drum. This is achieved by controlling the laser beam and exposing the surface of the
OPC drum to the laser light. A rotating polygon mirror reflects the laser light onto the OPC. Each face of the mirror
produces one scan line. As the OPC drum turns, the laser scans, to create the full page image.
The HSYNC signal is created when the laser beam from the laser unit reaches the end of the polygon mirror and this
signal is sent to the controller. The controller detects the HSYNC signal to adjust the vertical line of the image on
paper. In other words after the HSYNC signal is detected the image data is sent to the laser unit to adjust the left
margin on the paper.
4.2.8 Toner Cartridge
The toner cartridge is an integral unit containing the OPC unit and toner unit. The OPC unit consists of the OPC drum
and charge roller. The toner cartridge unit consists of the toner, supply roller, developing roller, and blade (doctor
blade).
Developing Method Non magnetic 1 element contacting method
Toner Non magnetic 1 element shatter type toner
Toner Life 3,500 sheets / 5,000 sheets (ISO19752 standard)
Toner remaining sensor No
OPC Cleaning Film OPC using an electro-static cleaning process
Management of waste toner Collected using an electro-static process and retained within the toner
cartridge.
No waste toner to dispose of.
OPC Drum protecting Shutter No
Toner CRUM Reader Identifies whether toner is Xerox branded toner or whether a Non-Xerox toner
cartridge is installed in the printer