PAPER FEED
B234/B235/B236/D101/D102/D103 6-112 SM
Tray Components (Example: 3rd Tray)
The 3rd paper feed motor (20) drives both the 3rd paper feed roller (21) and 3rd
pick-up roller (24).
The 3rd grip motor (15) drives the 3rd grip roller (18), the 3rd transport roller (16),
and the 3rd separation roller.
The 3rd paper feed sensor times the paper feed and signals jams if they occur.
The pick-up roller picks the sheet off the top of the stack, the paper feed motor
feeds the sheet to the grip roller. The grip roller pulls the sheet out of the cassette
and sends to the transport roller. The transport roller feeds the sheet into the
vertical feed path.
NOTE: This arrangement of motors and rollers is duplicated in tray 1 and tray 2.
Vertical Paper Path
After the sheet leaves the 3rd tray, it feeds to the 3rd transport roller (16) Æ 2nd
Transport roller (13) Æ Vertical relay roller (10) Æ 1st transport roller (8) Æ Upper
relay roller Æ Registration roller.
• Each paper tray has a transport roller paired with one transport sensor.
• The grip motors (one in each tray) drive the transport rollers, which feed the
paper past the paper trays. Their sensors check the timing of each sheet when it
passes, and signal jams if they occur.
• The vertical relay motor (10) is positioned between the 1st transport roller (7) and
2nd transport roller (12). This motor is necessary due to the greater distance
between transport rollers, due to the greater height of the 1st tray.
• All the rollers are driven by stepper motors only.
• The stepper motors were added for the feed and transport rollers on separate
drive shafts to improve the accuracy of control in the paper path.
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