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MX-M1100  TRANSFER SECTION  L – 1

MX-M1100

Service Manual

 

In this section, a positive high voltage is applied to paper to transfer toner images from the OPC drum to paper. 

1

Transfer drive roller

Drives the transfer belt. 

2

Transfer belt

Transfers toner images from the OPC drum to paper.

3

Transfer roller

Applies a voltage for transfer of toner from the OPC drum to paper. 

4

Transfer idle roller

Applies a pressure required for cleaning the transfer belt to the cleaning blade. 

5

Transfer tension roller

Applies a proper tension to the transfer belt. 

6

Transfer cleaning brush

Scrapes away residual toner from the transfer belt after transfer for cleaning. 

7

Transfer cleaning blade

Scrapes away residual toner from the transfer belt after transfer for cleaning.

8

Waste toner transport screw 
(Transfer section)

Transports waste toner from the transfer unit to the waste toner collection section. 

9

Main high voltage PWB

Outputs the transfer voltage and the transfer cleaning voltage. 

10

Sub high voltage PWB

Outputs the transfer cleaning voltage. 

PTDL

Pre-transfer discharge lamp  Reduces the OPC drum potential before transfer to improve the transfer efficiency. 

LED

TURS

Transfer solenoid

Separates/attaches the transfer belt from/to the OPC drum. 

Solenoid

DM

OPC drum motor

Drives the transfer section. 

DC brushless motor

TLS2

Waste toner jam sensor

Detects a waste toner transport jam. 

Transmission type photo 
sensor

DM

DM

1

1

TURS

TURS

1

1 2

2

5

5

6

6

7

7

8

8

3

3

4

4

2

2

5

5

6

6

7

7

8

8

3

3

4

4

13

GND2

15

+5V_C

17

XDM

19

DMCLK

21

DM-T

3

GND1

8

+38V0

HL PWB

38V0

1

GND1

2

GND2

1

+5V_C

2

XDM

3

DMCLK 4
DM-T

5

5 GND1

5

6 +38V0

6

DSW-F-HV

B16B-PASK

CN1

1

13

DF1B-28DES-2.5RC

DF1B-28DEP-2.5RC

DSW-F-HV

13

GND2

2

14 GND2

14

GND2

3

15 GND2

15

XTHV+PWM

7

19 XTHV+PWM 19

XTHV+REM

8

20 XTHV+REM 20

HVREMout

15

27 HVREMout

27

+24V_A

16

28 +24V_A

28

2

B40B-PNDZS-1

CN-3

DSW-F-HV2

4 GND2

6 GND2

9 DSW-F-HV

11 GND2
13 GND2

DSW-F-HV2

B11B-PASK

CN1

1

GND2

2

16 XTHVCLPWM

GND2

3

18 XTHVCLREM

21 XTHV+PWM

XTHVCLPWM

8

22 XBHVREM

XTHVCLREM

9

23 XTHV+REM

XBHVREM

11

1

B2P-VH

THVCL

2 THVCL

37 HVREMout
39 +24V_A

THV

PCU PWB

High voltage
PWB unit

(Main)

High voltage
PWB unit

(Sub)

3

2

1

TURS2

3

TURS1

2

+24V_TURS

1

3

2

1

TURS2

3

TURS1

2

+24V_TURS

1

+24V_TURS1

17

+24V_TURS2

16

3
4

TURS1

4

TURS2

3

SMR-03V-N/SMP-03V-NC

SMP-06V-NC/SMR-06V-N

DF11-4DP-2C+DF11-4DP-SP1

17
18

TURS2

3

TURS1

1

B40B-PNDZS-1

CN19

+24V_TURS1

5

+24V_TURS2

7

4

2

1

3

+24V_TURS2

2 +24V_TURS1

+24V_TURS

B40B-PNDZS-1

CN-21

B10B-PASK-1(LF)(SN)

CN7

SMR-10V-N/SMP-10V-NC

MX-M1100  TRANSFER SECTION  L – 2

Light is radiated onto the OPC drum after development to reduce
negative charges on the OPC drum. In the areas where toner is
attached to, an electric attraction force between the OPC drum and
toner is weakened to improve the efficiency in transfer operations. 
In the areas where toner is not attached to, an electric attraction
force between paper and the OPC drum after transfer is weakened
to improve the separation performance. 

A positive high voltage is applied to the transfer roller to charge
paper on the transfer belt positively, transferring negatively
charged toner images onto paper. 

The transfer current control signal (XTHV+PWM) duty is changed
to control the output current. 
The transfer current ON / OFF is controlled by the signal (XTHV +
REM).
In addition, the other transfer current control signal XTHV-PWM
and the transfer current ON/OFF control signal (XTHV-REM) are
outputted simultaneously. 

In the transfer belt cleaning operation, a negative high voltage
including the AC component is applied to the transfer roller to
attach unnecessary residual toner from the transfer belt to the OPC
drum, cleaning the transfer belt. 

The transfer belt cleaning control signal (XTHV-PWM) duty is 
changed to control the output voltage. 
The transfer belt cleaning ON/OFF is controlled by the signal 
(XTHV-REM).
On the other hand, the AC component controls the output voltage
by changing the duty of XTHVACPWM. The AC component ON/
OFF is controlled by the signal (XTHVACREM).
The transfer belt cleaning is executed mainly by the transfer blade
belt cleaning belt. 
Unnecessary residual toner on the transfer belt is removed and
transported to the waste toner collection section by the waste toner
transport screw. 

In addition, the cleaning brush is provided in the transfer section,
where the transfer belt is cleaned, too. 
In the transfer belt cleaning, the cleaning roller (brush type)
removes unnecessary residual toner from the transfer belt, and a
positive voltage (+200V) is applied to the removed toner to attach
them to the cleaning roller. 

85 -sheet model

Front print

30uA

Back print

35uA

95 -sheet model

Front print / Back print

40uA

110 -sheet model

Front print / Back print

40uA

PTDL1

PTDL1

OPC drum

CTL

CGL

Aluminum
layer

Cleaning
mode

Transfer
mode

OPC drum

CTL

CGL

Aluminum

layer

-400v/-600v

AC4.5kv
(p-p)

30-40

μA

Cleaning
mode

Transfer
mode

OPC drum

CTL

CGL

Aluminum

layer

-400v/-600v

AC4.5kv
(p-p)

30-40

μA

Cleaning
mode for
transfer belt

Cleaning
mode for
cleaning roller

-500v

+200v

MX-M1100  TRANSFER SECTION  L – 3

The toner attached to the cleaning roller is then cleaned by the
cleaning roller cleaning blade. 
The transfer cleaning control signal (XTHVCLPWM) duty is 
changed to control the polarity and the output voltage. 
The transfer cleaning ON/OFF is controlled by the signal (XTHVCL-
REM).

The cleaning roller itself is also cleaned. In this mode, a negative
voltage (-500V) is applied to attach residual toner on the cleaning
roller to the transfer belt. Then toner attached on the transfer belt is
cleaned by the transfer belt cleaning blade. 
The transfer cleaning control signal (XTHVCLPWM) duty is 
changed to control the polarity and the output voltage. 
The transfer cleaning ON/OFF is controlled by the signal (XTHVCL-
REM).

The transfer belt separation is executed by the transfer solenoid.
When the print engine receives print data and performs printing,
the transfer belt is in close contact with the OPC drum. 
In the following cases, the transfer belt is separated from the OPC
drum.
* When the process control is executed.
* When a jam occurs. 
* When the power is turned OFF.

1)

Open the front cover (a), and pull out the intermediate frame
(b).

2)

Remove the screw (a), and remove the cover (b).

Cleaning
mode for
transfer belt

Cleaning
mode for
cleaning roller

-500v

+200v

Cleaning
mode for
transfer belt

Cleaning
mode for
cleaning roller

-500v

+200v

OPC Drum

Transfer unit

A

Transfer separation solenoid

L - 4 / a

A

a

b

a

b

MX-M1100  TRANSFER SECTION  L – 4

3)

Remove the screw (a), and remove the holder (b).

4)

Remove the transfer belt unit (a).

5)

Disconnect the connector (a), and remove the screw (b). 
Remove the trandfer belt frame unit (c).

1)

Remove the transfer unit.

2)

Remove the screw (a), and remove the transfer cleaning blade
(b).

3)

Remove the screw (a), and remove the mounting plate (b).

4)

Remove the screw (a), and remove the mounting plate (b). 
Remove the stopper (c), the gear (d), the E-ring (e), and the 
bearing (f).

5)

Remove the screw (a), and remove the plate (b). Remove the
bearing (c) and the gear unit (d).

a

b

a

a

b

b

c

a

b

a

b

a

b

c

d

e

f

a

b

d

c

a

a