Canon imageRUNNER ADVANCE 4551i Service Manual page 87

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Table of Contents

Document width detection

263.5 or less

288.2 or less

● Mixed width document size detection

In case that mixed width and length documents are set, 3 types of paper detections such as maximum width, other than maximum

width and length are performed.

The maximum width is detected by the Document width sensor 1/2/3(SR13/SR14/SR15) in the same way of initial document size

Width other than maximum width is detected by the Different width sensor 1/2/3/4 (SR9/SR10/SR11/SR12).

Document length is detected by ON state on the Read sensor (SR2) and OFF state on the Registration sensor (SR1). Each

document size is determined by the combination of the ON/OFF states on these sensors.

Same series mixed width document combination

Same series of size (AB configuration)

Document length detec-

Same series of size (Inch configuration)

Detected size

2. Technology

Troubleshooting