Paper Feed, Transport, Output
J007/J010/J011 6-32 SM
humidity near the charge roller and transport belt. The temperature/humidity readings of
this sensor are matched with values in lookup tables cross-indexed with combinations of
temperature and humidity readings. The values read from the tables are used to adjust the
width of the bias (bias pitch) applied to the transport belt. This operation, called belt
charge control, operates within the following ranges of temperature and humidity:
Temperature: 0C to 35C (32F to
95F)
Adjusted in 2.5C (4.5F)
steps
Humidity: 0% to 100% Adjusted in 10% steps
The machine uses the feedback of the temperature/humidity sensor to reduce the width of
the charge applied to the transport belt below the print heads. This reduces the size of the
electrical field to the smallest size that can still provide the optimum charge to keep the
paper on the belt at the leading edge, center, and trailing edge of the paper without
interfering with the operation of the print nozzles.
Belt charge control is done for every paper feed station (Tray 1, Tray 2, and bypass) and
for every paper type (normal paper, envelopes, thick paper, and OHP).
The sharp curvature of the paper path separates the paper from the transport belt at the
time paper gets fed out the paper exit.
For more details about how to adjust the transport belt charge control, please refer to
Section "4. Troubleshooting".
6.6.8 CHARGE LEAK DETECTION
The printer checks for charge leaks:
Immediately after the printer is turned on.
When it gets a leak detection signal from the high voltage power pack at the time of
printer operation.
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