Canon LBP 2460 Service Manual - Page 115

CHAPTER 2 Power- ON STBY INTR PRINT PRINT signal (/PRNT) VERTICAL SYNC signal (/VSYNC) Main motor (MT1) Envelope feeder pick-up motor (SMT11) Pick-up command Registration sensor (PS1) Fixing unit delivery sensor (PS1403) About 1.0 Forward Backward About 0.1 About 1 1st Start 2nd Start About 2.7 About 1 1st Start 2nd Start (Unit: Seconds) LSTR STBY Figure 2-8-3 The upper separation roller is driven by the motor through a torque limiter. In a normal situation, the upper separation roller imparts a rotational force in the same direction as the pick-up and lower separation roller (shown by the white arrow in top figure 2-84). However, the upper separation roller, envelope, and lower separation roller are all in contact with each other. Therefore, the upper separation roller is forced to rotate in the opposite direction (in the direction of the black arrows in middle figure of 2-8-4) through the movement of the envelope, which is driven by the lower separation roller. Upper separation roller Envelope Pick-up roller Lower separation roller Upper separation roller Envelope Normal Pick-up roller Lower separation roller Upper separation roller Envelope Multifeed Pick-up roller Lower separation roller Figure 2-8-4 2 - 69