Multi Feed Detection Control; Centering Detection Control - Develop ineo+ 6500 Service Manual

Theory of Operation Ver1.0 Sep.2006
5.3.3

Multi feed detection control

• The multi feed sensor is provided in the horizontal conveyance section to detect multi feed.
• The multi feed sensor is a ultrasonic sensor consisted of a sending and receiving section. The ultrasonic
waves sent from the multi feed detection board/S (MFDTB/S) are received at the multi feed detection
board/R (MFDTB/R).
• The intensity of the ultrasonic waves received by the receiving section differs according to the number of
sheets passed between the MFDTB/S and MFDTB/R. Therefore, the sensor can detect multi feed by the
intensity.
• When multi feed is detected, the paper feeding operation will stop, however, the next sheet of paper is fed
as usual.
• The multi feed detection function can be enabled/disabled using DipSW19-4.
5.3.4

Centering detection control

• While paper being fed, centering sensor (PS25) detects the paper edges in the main scan direction.
• The detected information is written in the image processing section so that a scanned image is precisely
located and printed on the paper as intended.
• In order to increase the life of the PS25, the sensor is not always "On"; it turns off after sending the detected
information to the main body and turns on when it detects the paper reached to the pre-registration sensor.
5. CONVEYANCE SECTION
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