Brother MFC 1870MC, Руководство по обслуживанию, Страница: 24 / 217

III –
12
[ 4 ] Copying mode (Solenoid: ON, Motor rotation: Forward)
The control electronics activates the solenoid to release the stopper of arm A from the clutch
lever. When the motor rotates in the forward direction, the sun gear 20/90 ("B") rotates
counterclockwise so that the planet gear 20A ("L") transmits the torque to the document
scanner mechanism (e.g., the separation roller gear ("F"), white pressure roller gear ("I") and
document ejection roller gear ("K")) and the planet gear 20B ("C") transmits the torque to the
recording mechanism (e.g., the platen gear ("a"), paper feed roller gear ("T"), and paper
ejection roller gear ("X")).
If the platen gear ("a" in the figure below) on the left end of the platen shaft rotates, the gear
33RB ("b") on the right end also rotates so as to drive the friction torque transmission ASSY
and ribbon drive gear ("e") that rotates the ribbon take-up gear ("f") in the ribbon cartridge, as
shown on the next page.
Active Gears on the Left Side
U
V
W
Q
P
O
Z
M
L
E
G
H
J
a
Y (Planet gear 44)
N (Sun gear 36/27)
S (Planet
gear 34)
(Front)
K (Document
ejection roller
gear)
Clutch lever
A (Motor gear)
L (Planet gear 20A)
B (Sun gear
20/90)
Solenoid
R (Sun gear 39/24)
X (Paper ejection roller gear)
T (Paper feed roller gear)
a (Platen gear)
C (Planet gear 20B)
F (Separation roller gear)
I (White pressure
roller gear)
Arm A Released from Coutout
X X X X X
of Clutch Lever
C (Planet gear 20B)
B (Sun gear 20/90)
L (Planet gear 20A)
Solenoid
Stopper of arm B
Stopper of arm A
Cutout
x
of clutch lever
Clutch lever