Sub Roller Gear Train Mechanism - Epson Stylus Pro 5000 Service Manual

Stylus Pro5000

2.1.1.8 Sub Roller Gear Train Mechanism

The sub roller of Stylus Pro5000 is the big roller which always rotates, no
matter which paper tray is used to load the paper. This roller rotates only
while the pump/ASF motor rotates in reverse. Figure 2-13 shows motive
power transmission.
Sub Roller Driven Gear
Figure 2-13. Conveying Motive Power in the Sub Roller Gear Train
Rev. A
[Explaining the operation]
Pump/ASF motor rotates in reverse, then the sun gear marked "A" in the
figure2-13 also performs reversed rotation. By this reverses rotation of this
sun gear, the planetary gear 3 makes the transmission gear, which is
located rear side of Gear B. rotate in reverse. (Since Gear 3 is located
behind the planetary gear2, it is not shown in the figure2-13) By this, the
planetary gear 4(Gear "C" in the figure), which is hiding itself in the below,
comes up as it is shown in the figure, and makes it possible to have
engagement with Sub Roller Driven gear.
Chapter2 Operating Principles
2-13