Panasonic KX-P7100 Collimator Lens, Polygon Scanner, Cylindrical Lens and Lens, Timing Sensor

KX-P7100

1.9.3.Collimator Lens

The collimator lens converts light from the laser diode to parallel light. This aids in scanning and provides better convergence to a dot.

1.9.4.Polygon Scanner

The polygon scanner consists of a 6-sided mirror directly driven by a brushless DC motor at a rate 20,078.74 rpm. The laser beam is reflected across the OPC drum by the mirror faces and produces the scan. One mirror face is equal to one main scan.This unit features stable line scanning speed, precision mirror surface reflection angle, reflect-free surfaces, and instant start.

Polygon Scanner Specifications

Item		Specification
Mirror	6		faces
Revolution	20,078.74		rpm

1.9.5.Cylindrical Lens and Lens

Each of the polygon mirror surfaces has a slight imperfection. This prevents the beam from scanning the OPC drum surface at the

constant interval in the sub-scan direction. The cylindrical lens and lens are used for correcting this uneven laser scanning.

1.9.6. Lens

This lens ensures that the beam scans across the surface of the OPC drum at a constant rate. The beam is refracted to parallel light as it passes through the lens to ensure that the dots at the edge of the drum and at the center of the drum areequally spaced. This lens also provides a set focal length for laser beam.

Specifications

Item		Specification
Scanning Width	207.43		mm
Focusing Light Spot Size	80 x 90		µm

1.9.7.Timing Sensor

This sensor detects the laser beam and determines the start timing for scanning. A pin photodiode is used as the timing sensor.

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