Brother International FAX-1010 Service Manual - Page 17

2.3

Power

Transmission

Mechanism

The

equipment

has

a

single

drive

motor

whose

power

transmission

route

can

be

switched

by

the

planetary

gear

systems

and

the

solenoid.

This

switching

allows

the

equipment

to

func-

tion

in

four

operation

modes

(scanning,

paper

feeding/ejecting,

recording,

and

copying

modes).

For

the

details

about

the

planetary

gear

systems,

refer

to

Subsection

2.3.2.

2.3.1

Structure

of

the

gear

train

At

the

left

side

of

the

equipment,

the

rotational

torque

of

the

motor

on

the

main

frame

is

transmitted

to

the

gears

on

the

main

frame

and

then

to

the

gears

on

the

platen

frame.

These

gears

drive

the

document

feeding/ejecting

related

rollers,

paper

feeding/ejecting

related

roll-

ers,

and

the

platen.

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.

This

way,

the

rotational

torque

is

transmitted

to

the

gears

on

the

right

side

of

the

equipment.

At

the

right

side

of

the

equipment,

the

rotational

torque

is

further

transmitted

via

the

friction

torque

transmission

ASSY

to

the

ribbon

drive

gear

("e")

which

drives

the

ribbon

take-up

gear

in

the

ribbon

cartridge.

Right

side

Left

side

d

(Gear

18)

()

c

(Gear

20/40)

O

0

•

e

(Gear

46

of

Friction

torque

transmission

ASSY)

Main

frame

b

(Gear

33RB)

of

0

Platen

frame

(Gears

18/41)

T

(Paper

feed

roller

gear,

Gear

55)

Platen

frame

S

(Planet

gear

34

of

Arm

P

ASSY)

R

(Sun

gear

39/24)

0

(

_}

Main

frame

Q

(Gear

33)

P

(Gear

18)

ant

CD

O

0

O

e

(Ribbon

drive

gear,

Gear

24)

W

(Clutch

gear

ASSY)

X

(Paper

ejection

roller

gear,

Gear

40)

a

(Platen

gear,

Gear

23)

Z

(Gear

33/45)

M

(Gear

39)

C

(Planet

gear

20B

of

Arm

B

ASSY)

D

(Gear

33)

F

(Separation

roller

gear)

I

(White

pressure

roller

gear)

LW/

0

oc

p

0

a

O

(Front)

O

(Gear

39)

L

K

(Document

N

(Sun

gear

ejection

roller

36/27)

E

(Gear

G

H

J

gear)

1

/

4

--

Y

(Planet

gear

44

of

20/40)

y--)

Arm

C

ASSY)

Clutch

lever

(Gears

14/20)

A

(Motor

gear)

L

(Planet

gear

20A

of

Arm

AASSY)

B

(Sun

gear

20/90)

O:

Gears

on

the

main

frame

Gear

Train

O:

Gears

on

the

platen

frame

III-

5

Brother International FAX-1010 Service Manual - Page 17

transmission

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