Lifter Gear Train Mechanism - Epson Stylus Pro 5000 Service Manual

Stylus Pro5000 Chapter2 Operating Principles

2.1.1.6 Lifter Gear Train Mechanism

Lifter Gear Train Mechanism is the mechanism to control the lifter, which
operates the hopper up or down. Unlike the previous paper trays, the
hopper of Stylus Pro5000 does not go up automatically, even the user
installs the tray to the printer body. Therefore, the lifter pushes up the
hopper forcefully from the hole located under the paper tray.
D E
Figure 2-7. Lifter Gear Train Mechanism
[Explaining the operation]
Power source is pump/ASF motor. This motive power is conveyed from the
transmission gear located under pump frame to the top surface of the sun
gear, which has 3 planetary gears. (See "A" in the figure 2-7)
When the pump/ASF motor rotates right, the motive power is conveyed
from "A" to "I" shown in the figure and in that alphabetic order, and the lifter
goes up. At this time, semicircle gear "I" moves the axis of the lifter up and
down directly, and maintains reverse rotation at paper loading and upper
surface sensor operation so that the lifted up lifter does not return to the
opposite direction by One-way Roller. (When the paper is actually loaded,
refer to the next section, since hopper 5mm Down mechanism works.)
Rev. A 2-9