Taurus-C1 Training
257
Slide 257
Laser Unit Components
The only part of the laser unit that requires cleaning is the toner
shield glass between the bottom of the laser unit and the drum.
The polygon motors, LD units, and other components inside the
laser unit are not serviced in the field. If a problem occurs, the
entire laser unit is replaced.
After the laser unit is replaced, an SP code must be executed:
SP2108-1 for the CK laser unit and SP2108-2 for the YM laser unit.
These SP codes set the operation parameters for the laser unit
(main scan registration, main scan magnification, shading, and
bow skew adjustment).
1. LD Units
2. ND Filter
3. Cylindrical Lenses
4. Polygon Mirror
5. Polygon Mirror Motor
6. Lens 1 (Main Scan)
7. 3rd Mirror
8. 1st, 2nd Mirrors (below)
9. Skew Motor
10.Laser Synchronization Detector
11.Control Board
12.Thermistor
The machine calculates the optimum optic settings for each color and uses an
ND filter to modify the light intensity.
There are four cylindrical lenses in each laser unit, two for each color. The
cylindrical lens adjusts the beam path and pitch in the sub scan direction for
each color.
Each polygon mirror has six facets. Both mirrors rotate at 16,668 rpm.
The magnification rate can be fine adjusted within a range of ±0.8% in the main
scan and sub scan directions for consistent image reproduction during duplexing.
It is not necessary to reduce the line speed, as was done with previous
machines.
¾ These adjustments can be done with SP2102-41 to SP2102-44
(Magnification Adjustment) to adjust the magnification rate for the front/back
pages in duplex print jobs.
To Next Page
