User Guide

Skew-feed prevention
The product can straighten the paper without slowing the feed operation.
1. As the paper enters the paper path, the leading edge strikes the registration shutter, which
straightens the paper. The paper does not pass through the shutter.
2. The feed rollers keep pushing the paper, which creates a force on the leading edge against the
registration shutter.
3. When the force is great enough, the registration shutter opens and the paper passes through.
Figure 1-38 Skew-feed prevention
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OHT detection
The OHT sensor detects overhead transparencies. The OHT sensor is a transmission sensor that uses an
LED. The DC controller determines a media mismatch and notifies the formatter when the media type
differs from the media type detected by the OHT sensor. The DC controller turns the LED in the OHT
48 Chapter 1 Theory of operation ENWW