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HAKUBA 26PPM Laser Printer - Base Engine Technical Manual
Version 1.0
Principles of Operation
2. Exposure
The Raster Output Scanner (ROS) generates an invisible beam of cohesive light, called a laser beam.
Image data received from the print controller modulates this beam, turning it on and off according to
image information.
Through the use of a series of rotating and stationary mirrors within the ROS Assy, the beam scans the
negative charged drum surface. Whenever the print controller sends a command to print a black pixel,
the laser switches on long enough to shine onto the drum at a single pixel point. That point is now dis-
charged and slightly less negative, relative to the surrounding negative charge.
Summary of Contents for b 6100
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