Canon imageRUNNER ADVANCE 4551i Service Manual page 133

2. Technology
■ Paper Size Detection
Paper size of the cassette can be automatically detected by adjusting the position of the guide plate.
Concavo-convex area of the cassette dial is switched when the guide plate is shifted and two Size Switches on a printer are
switched.
Length and width are detected according to the ON / OFF combination of switches.
As long as standard paper, both AB type and inch type can be used.
However, size should be found manually on the check screen of operation panel for the combination of A5-Rand STMT-R or the
combination of B5-R and EXEC.
S29/S30
S28/S35
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