Paper size Paper length detection switch Paper width detection switch
B5 portrait off on on off off na
Legal on off on off off na
Executive off on off off off na
A5 portrait off off on off off na
Custom on on on na na na
No cassette off off off off off off
Figure 5-36.
Paper size detection switches
Although the cassette determines paper size by reading the switches, it is possible that the
user can select a different size than what is loaded, creating an error in paper size detection.
The Custom/Standard paper size switch in the cassette overrides the size detection switches
when it is in the Custom position.
The paper leading edge sensor detects when the leading edge and the trailing edge of a
sheet of paper pass it. By measuring the time between the leading edge and trailing edge
passing, the sensor can determine the actual size of the paper. If this measured size differs
from the size specified by the formatter or the switch combination, the DC controller
determines there is a mis-match. The current sheet of paper is ejected from the printer, and
the printer stops.
Table 5-5. Cassette paper size detection/cassette detection (continued)
174 Chapter 5 Theory of operation ENWW
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