Sharp MX-6240N / MX-7040N (serv.man32) Service Manual ▷ View online
MX-7040N OPERATIONAL DESCRIPTIONS 13 – 29
8. Toner supply section
A. Electrical and mechanical relation diagram
(1)
Toner supply section
TNHM_Y
TBFM
TFSD_Y
TFSD_M
TFSD_K
TFSD_C
TNHM_M
TNHM_C
TNHM_K
TNM_Y
TNM_M
TNM_C
TNM_K
DRIVER PWB
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
2
3
4
5
6
3
4
5
6
1
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
61
62
63
64
62
63
64
PCU PWB
GND
POM_XA
POM_A
POM_B
POM_B
POM_CNT
POM_XB
ADUM1_XA
ADUM1_XB
ADUM1_XB
ADUM1_A
ADUM1_B
ADUM1_B
ADUM2_A
ADUM2_B
ADUM2_B
ADUM1_CNT
ADUM2_XA
ADUM2_XB
ADUM2_CNT
PFM_CLK
ADUM2_XB
ADUM2_CNT
PFM_CLK
PFM_CNT
PFM_EN
CN-8
FUMCM_A
FUMCM_B
FUMCM_XA
FUMCM_XB
PRM_A
PRM_B
PRM_XA
FUMCM_B
FUMCM_XA
FUMCM_XB
PRM_A
PRM_B
PRM_XA
WEBM2_A
WEBM2_B
WEBM1_A
WEBM1_B
WEBM2_B
WEBM1_A
WEBM1_B
PRM_XB
RRM_CLK
RRM_EN
RRM_CNT1
RRM_CNT2
RRM_EN
RRM_CNT1
RRM_CNT2
FUMCM_A
FUMCM_B
FUMCM_XA
FUMCM_XB
PRM_A
PRM_B
PRM_XA
FUMCM_B
FUMCM_XA
FUMCM_XB
PRM_A
PRM_B
PRM_XA
POM_XA
POM_A
POM_B
POM_B
POM_CNT
POM_XB
ADUM1_XA
ADUM1_XB
ADUM1_XB
ADUM1_A
ADUM1_B
ADUM1_B
ADUM2_A
ADUM2_B
ADUM2_B
ADUM1_CNT
ADUM2_XA
ADUM2_XB
ADUM2_CNT
PFM_CLK
ADUM2_XB
ADUM2_CNT
PFM_CLK
PFM_CNT
PFM_EN
WEBM2_A
WEBM2_B
WEBM1_A
WEBM1_B
WEBM2_B
WEBM1_A
WEBM1_B
PRM_XB
RRM_CLK
RRM_EN
RRM_CNT1
RRM_CNT2
RRM_EN
RRM_CNT1
RRM_CNT2
502790-6491
502790-6491
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
LCCM_A
LCCM_B
LCCM_XA
LCCM_XB
LCCM_CNT
LCCM_B
LCCM_XA
LCCM_XB
LCCM_CNT
LCCM_A
LCCM_B
LCCM_XA
LCCM_XB
LCCM_CNT
LCCM_B
LCCM_XA
LCCM_XB
LCCM_CNT
TNHM_A
TNHM_B
TNHM_/A
TNHM_/B
TNHM_Y_EN
TNHM_M_EN
TNHM_C_EN
TNHM_K_EN
TNHM_B
TNHM_/A
TNHM_/B
TNHM_Y_EN
TNHM_M_EN
TNHM_C_EN
TNHM_K_EN
TNM_K_A
TNM_K_B
TNM_K_/A
TNM_K_/B
TNM_C_A
TNM_C_B
TNM_C_/A
TNM_C_/B
TNM_M_A
TNM_M_B
TNM_M_/A
TNM_M_/B
TNM_Y_A
TNM_Y_B
TNM_Y_/A
TNM_Y_/B
TNM_K_B
TNM_K_/A
TNM_K_/B
TNM_C_A
TNM_C_B
TNM_C_/A
TNM_C_/B
TNM_M_A
TNM_M_B
TNM_M_/A
TNM_M_/B
TNM_Y_A
TNM_Y_B
TNM_Y_/A
TNM_Y_/B
GND
TNHM_A
TNHM_B
TNHM_/A
TNHM_/B
TNHM_Y_EN
TNHM_M_EN
TNHM_C_EN
TNHM_K_EN
TNHM_B
TNHM_/A
TNHM_/B
TNHM_Y_EN
TNHM_M_EN
TNHM_C_EN
TNHM_K_EN
TNM_K_A
TNM_K_B
TNM_K_/A
TNM_K_/B
TNM_C_A
TNM_C_B
TNM_C_/A
TNM_C_/B
TNM_M_A
TNM_M_B
TNM_M_/A
TNM_M_/B
TNM_Y_A
TNM_Y_B
TNM_Y_/A
TNM_Y_/B
TNM_K_B
TNM_K_/A
TNM_K_/B
TNM_C_A
TNM_C_B
TNM_C_/A
TNM_C_/B
TNM_M_A
TNM_M_B
TNM_M_/A
TNM_M_/B
TNM_Y_A
TNM_Y_B
TNM_Y_/A
TNM_Y_/B
CN-10
1
16
3
5
7
9
11
13
15
14
12
10
8
6
4
2
CN-1
17
18CZ-6H
18CZ-6H
B18B-CZHK-1
1
16
3
5
7
9
11
13
15
14
12
10
8
6
4
2
17
18
18
1
3
5
7
9
11
12
12
10
8
6
4
2
B12B-CZHK-1
12CZ-6H
CN-3
CN-2
18CZ-6H
B18B-CZHK-1
T NHM_K_/B
T NHM_K_/A
+24V
T NHM_K_/A
+24V
TNHM_K_A
+24V
TNHM_K_B
TNHM_K_B
TNM_K_/A
TNM_K_/B
+24V
+24V
+24V
TNM_K_A
TNM_K_B
14
15
16
17
18
15
16
17
18
TNM_C_/A
TNM_C_/B
+24V
+24V
TNM_C_B
TNM_C_A
+24V
TNM_C_B
TNM_C_A
TNM_M_/A
TNM_M_/B
+24V
+24V
+24V
TNM_M_A
TNM_M_B
TNM_Y_/B
TNM_Y_/A
+24V
+24V
TNM_Y_B
TNM_Y_A
TNM_Y_/A
+24V
+24V
TNM_Y_B
TNM_Y_A
+24V
+24V
+24V
TNHM_Y_/B
TNHM_Y_/A
TNHM_Y_/A
TNHM_Y_B
TNHM_Y_A
TNHM_M_/B
TNHM_M_/A
+24V
TNHM_Y_A
TNHM_M_/B
TNHM_M_/A
+24V
TNHM_M_A
TNHM_M_B
+24V
TNHM_C_/B
TNHM_C_/A
+24V
TNHM_C_/A
+24V
TNHM_C_A
+24V
TNHM_C_B
TNHM_C_B
06CK-6H-PC
(reverse type)
(reverse type)
1
2
3
4
5
6
2
3
4
5
6
B6B-PH-K-S
1
4
5
3
6
2
TNM_Y_/B
TNM_Y_/A
+24V
+24V
TNM_Y_B
TNM_Y_A
TNM_Y_/A
+24V
+24V
TNM_Y_B
TNM_Y_A
06CK-6H-PC
(reverse type)
(reverse type)
1
2
3
4
5
6
2
3
4
5
6
B6B-PH-K-S
1
4
5
3
6
2
06CK-6H-PC
(reverse type)
(reverse type)
1
2
3
4
5
6
2
3
4
5
6
B6B-PH-K-S
1
4
5
3
6
2
TNM_M_/A
TNM_M_/B
+24V
+24V
+24V
TNM_M_A
TNM_M_B
TNM_C_/A
TNM_C_/B
+24V
+24V
TNM_C_B
TNM_C_A
+24V
TNM_C_B
TNM_C_A
1
12
11
10
9
8
7
2
3
4
5
6
3
4
5
6
13
14
15
16
17
18
14
15
16
17
18
1
2
5
6
8
9
11
10
10
4
3
3
12
7
15
14
13
14
13
17
16
16
18
BU18P-TZ-S
TNM_C_/A
TNM_C_/B
+24V
+24V
TNM_C_B
TNM_C_A
+24V
TNM_C_B
TNM_C_A
TNM_M_/A
TNM_M_/B
+24V
+24V
+24V
TNM_M_A
TNM_M_B
TNM_Y_/B
TNM_Y_/A
+24V
+24V
TNM_Y_B
TNM_Y_A
TNM_Y_/A
+24V
+24V
TNM_Y_B
TNM_Y_A
06CK-6H-PC
(reverse type)
(reverse type)
1
2
3
4
5
6
2
3
4
5
6
B6B-PH-K-S
1
4
5
3
6
2
TNHM_K_/B
+24V
+24V
+24V
1
12
11
10
9
8
7
2
3
4
5
6
3
4
5
6
13
14
15
16
17
18
19
14
15
16
17
18
19
1
2
5
6
8
9
4
3
3
7
11
10
10
12
15
14
13
14
13
16
17
18
19
BU19P-TZ-S
(NC)
(NC)
(NC)
19CZ-6H
19CZ-6H
+24V
+24V
+24V
TNHM_Y_/B
TNHM_Y_/A
TNHM_Y_/A
TNHM_Y_B
TNHM_Y_A
TNHM_M_/B
TNHM_M_/A
+24V
TNHM_Y_A
TNHM_M_/B
TNHM_M_/A
+24V
TNHM_M_A
TNHM_M_B
+24V
TNHM_C_/B
TNHM_C_/A
+24V
TNHM_C_/A
+24V
TNHM_C_A
+24V
TNHM_C_B
TNHM_C_B
06CK-6H-PC
(reverse type)
(reverse type)
1
2
3
4
5
6
2
3
4
5
6
B6B-PH-K-S
1
4
5
3
6
2
THHM_Y_/B
TNHM_Y_/A
+24V
+24V
TNHM_Y_B
TNHM_Y_A
TNHM_Y_/A
+24V
+24V
TNHM_Y_B
TNHM_Y_A
06CK-6H-PC
(reverse type)
(reverse type)
1
2
3
4
5
6
2
3
4
5
6
B6B-PH-K-S
1
4
5
3
6
2
06CK-6H-PC
(reverse type)
(reverse type)
1
2
3
4
5
6
2
3
4
5
6
B6B-PH-K-S
1
4
5
3
6
2
TNHM_M_/A
TNHM_M_/B
+24V
+24V
+24V
TNHM_M_A
TNHM_M_B
TNHM_C_/A
TNHM_C_/B
+24V
+24V
TNHM_C_B
TNHM_C_A
+24V
TNHM_C_B
TNHM_C_A
1
12
11
10
9
8
7
2
3
4
5
6
3
4
5
6
1
2
5
6
8
9
11
10
10
4
3
3
12
7
BU12P-TZ-S
TNHM_K_/B
TNHM_K_/A
+24V
TNHM_K_/A
+24V
TNHM_K_A
+24V
TNHM_K_B
TNHM_K_B
TNM_K_/A
TNM_K_/B
+24V
+24V
+24V
TNM_K_A
TNM_K_B
12CZ-6H
12CZ-6H
06CK-6H-PC
(reverse type)
(reverse type)
1
2
3
4
5
6
2
3
4
5
6
B6B-PH-K-S
1
4
5
3
6
2
+24V
+24V
+24V
TNHM_K_/A
TNHM_K_A
TNHM_K_B
TNM_K_/A
TNM_K_/B
TNM_K_A
TNM_K_B
DF3-3S-2C
1
2
3
2
3
1
2
3
2
3
5VNPD
GND
18
19
2 0
21
22
23
24
25
26
27
28
29
19
2 0
21
22
23
24
25
26
27
28
29
5VNPD
GND
5VNPD
5VNPD
GND
GND
GND
5VNPD
GND
GND
5VNPD
2
2
2
2
B29B-CSRK
29CSR-8PK
GND
5VNPD
TFSD_Y
TFSD_M
TFSD_C
TFSD_Y
TFSD_M
TFSD_C
TFSD_K
GND
5VNPD
3
1
3
1
3
1
3
1
13XR-6H-P
1-179228-3
CN-21
SMP-03V-NC
SMP-03V-NC
SMP-03V-NC
SMR-03V-N
SMR-03V-N
SMR-03V-N
SMR-03V-N
1
2
5
6
8
9
11
10
10
4
3
3
12
7
5VNPD
GND
5VNPD
5VNPD
GND
GND
GND
5VNPD
GND
GND
5VNPD
11
12
9
8
7
3
4
5
6
4
5
6
12
2
13
TFSD_K
TFSD_C
TFSD_M
TFSD_Y
7-292254-3
SMP-03V-NC
1
2
3
2
3
1
2
3
2
3
5VNPD
GND
TFSD_K
1
3
5VNPD
GND
2
TFSD_K
DF3-3S-2C
1
3
5VNPD
GND
2
TFSD_C
DF3-3S-2C
1
3
5VNPD
GND
2
TFSD_M
DF3-3S-2C
1
3
5VNPD
GND
2
TFSD_Y
B38B-PNDZS
CN-12(1/2)
2
4
6
4
6
TBFM_V
TBFM_LD
GND
TBFM_LD
GND
SMP-03V-NC
SMR-03V-N
TBFM
1
1
3
3
2
2
GND
TBFM_V
TBFM_LD
TBFM_LD
MX-7040N OPERATIONAL DESCRIPTIONS 13 – 30
B. Operational descriptions
(1)
Outline
Adoption of the rotating toner bottle enables large capacity with a compact toner cartridge size.
When the remaining toner detection sensor in the toner hopper unit detects no toner, the toner bottle turns to supply toner to the toner hopper.
After supplying, full or empty status is detected at the toner hopper inside. Therefore even if the toner cartridge becomes empty, copying is not
immediately suspended because toner inside the toner hopper is used.
immediately suspended because toner inside the toner hopper is used.
Signal name
Name
Function/Operation
TBFM
Toner bottle fan motor
Cools the surrounding of the toner bottle.
TFSD_KCMY
Toner remaining quantity sensor
Detects the remaining toner quantity.
TNHM_KCMY
Hopper motor
Transports toner.
TNM_KCMY
Toner motor
Transports toner from the toner bottle to the toner hopper unit.
MX-7040N OPERATIONAL DESCRIPTIONS 13 – 31
9. Developing section
A. Electrical and mechanical relation diagram
3
3
3
3
1
1
1
1
2
2
2
2
P-GND
DM_K_CK
DM_K_D
DHPD_K
D
VC_K
24V3
5VNPD+R
GND
DM_K_LD
CW/CCW
24V3
P
AP-10V
-S
PCU PWB
B29B-CSRK
16
17
18
19
20
21
22
23
24
25
26
27
28
29
1
12
11
10
9
8
7
2
3
4
5
6
13
14
15
CN-17
(NC)
GND
TCS_C
5VN
TSG_C#
D
VTYP_C
GND
D
VTYPSEL_C
GND
TCS_K
5VN
TSG_K#
D
VTYP_K
GND
D
VTYPSEL_K
TSG_M#
TSG_Y#
D
VTYPSEL_M
GND
D
VTYP_M
5VN
TCS_M
GND
D
VTYPSEL_Y
GND
D
VTYP_Y
5VN
TCS_Y
GND
(NC)
(NC)
(NC)
(NC)
(NC)
09SOR-RFC-MGD(LF)(SN)
RFCP-09SO-RJ-M
09CSR-8PK(N)
RFCYP-09-Z-S
51021-0400
1
2
3
4
5
6
7
8
9
29CSR-8PK
1
2
3
4
5
6
7
8
9
24V3(D
VCR
U_V)
GND
TCS_Y
5VN
TSG_Y#
D
VTYP_Y
GND
D
VTYPSEL_Y
/D
VCR
U_Y
07XR-6H-P
07XR-6H-P
D
VTYPSEL_Y
GND
D
VTYP_Y
TSG_Y#
TCS_Y
5VN
GND
6-292254-7
1
7
2
3
4
5
6
1
2
5
6
4
3
7
4
3
2
1
TSG_Y#
5VN
TCS_Y
GND
DV
U
N
(YELLO
W)
(NC)
(NC)
(NC)
(NC)
(NC)
09SOR-RFC-MGD(LF)(SN)
RFCP-09SO-RJ-M
09CSR-8PK(N)
RFCYP-09-Z-S
51021-0400
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
07XR-6H-P
07XR-6H-P
6-292254-7
1
7
2
3
4
5
6
1
2
5
6
4
3
7
4
3
2
1
TSG_M#
5VN
TCS_M
GND
DV
U
N
(MA
GENT
A)
D
VTYPSEL_M
GND
D
VTYP_M
TSG_M#
5VN
TCS_M
GND
24V3(D
VCR
U_V)
GND
TCS_M
5VN
TSG_M#
D
VTYP_M
GND
D
VTYPSEL_M
/D
VCR
U_M
(NC)
(NC)
(NC)
(NC)
(NC)
09SOR-RFC-MGD(LF)(SN)
RFCP-09SO-RJ-M
09CSR-8PK(N)
RFCYP-09-Z-S
51021-0400
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
07XR-6H-P
07XR-6H-P
6-292254-7
1
7
2
3
4
5
6
1
2
5
6
4
3
7
4
3
2
1
DV
U
N
(CY
AN)
TSG_C#
5VN
TCS_C
GND
D
VTYPSEL_C
GND
D
VTYP_C
TSG_C#
5VN
TCS_C
GND
GND
24V3(D
VCR
U_V)
TCS_C
5VN
TSG_C#
D
VTYP_C
GND
D
VTYPSEL_C
/D
VCR
U_C
(NC)
(NC)
(NC)
(NC)
(NC)
09SOR-RFC-MGD(LF)(SN)
RFCP-09SO-RJ-M
09CSR-8PK(N)
RFCYP-09-Z-S
51021-0400
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
07XR-6H-P
07XR-6H-P
6-292254-7
1
7
2
3
4
5
6
1
2
5
6
4
3
7
4
3
2
1
DV
U
N
(BLA
CK)
TSG_K#
5VN
TCS_K
GND
D
VTYPSEL_K
GND
D
VTYP_K
TSG_K#
5VN
TCS_K
GND
GND
24V3(D
VCR
U_V)
TCS_K
5VN
TSG_K#
D
VTYP_K
GND
D
VTYPSEL_K
/D
VCR
U_K
1
2
1
11
10
9
8
7
2
3
4
5
6
1
2
5
6
8
9
11
10
4
3
7
1-179228-1
11XR-6H-P
02CK-6H-P
PHNR-02-H
B
U02P-TR-P-H
5
4
3
2
1
7
6
(NC)
DM_Y_CK
5VNPD+R
P-GND
24V3
DM_Y_D
D
VC_Y
24V3
DHPD_Y
GND
24V3
P-GND
(NC)
DM_Y_CK
DM_Y_D
CW/CCW
DM_Y_LD
D
VC_Y
24V3
1
11
10
9
8
7
2
3
4
5
6
B31B-CSRK
CN-20
24V3
P-GND
DM_Y_CK
DM_Y_D
D
VC_Y
24V3
DHPD_Y
GND
5VNPD+R
DM_Y_LD
CW/CCW
CW/CCW
DM_Y_LD
P
AP-07V
-S
B7B-P
ASK-1
2
1
7-292254-1
1
2
1
11
10
9
8
7
2
3
4
5
6
1
2
5
6
8
9
11
10
4
3
7
1-179228-1
11XR-6H-P
02CK-6H-P
PHNR-02-H
B
U02P-TR-P-H
5
4
3
2
1
7
6
(NC)
24V3
P-GND
(NC)
D
VC_C
24V3
P
AP-07V
-S
B7B-P
ASK-1
2
1
7-292254-1
1
2
1
11
10
9
8
7
2
3
4
5
6
1
2
5
6
8
9
11
10
4
3
7
1-179228-1
11XR-6H-P
02CK-6H-P
PHNR-02-H
B
U02P-TR-P-H
5
4
3
2
1
7
6
(NC)
D
VC_M
24V3
1
11
10
9
8
7
2
3
4
5
6
P
AP-07V
-S
B7B-P
ASK-1
2
1
7-292254-1
1
2
1
11
10
9
8
7
2
3
4
5
6
1
2
5
6
8
9
11
10
4
3
7
1-179228-1
11XR-6H-P
02CK-6H-P
PHNR-02-H
B
U02P-TR-P-H
5
4
3
2
1
7
6
(NC)
24V3
P-GND
(NC)
D
VC_K
24V3
1
11
10
9
8
7
2
3
4
5
6
B31B-CSRK
24V3
P-GND
24V3
DHPD_Y
GND
5VNPD+R
P
AP-07V
-S
B7B-P
ASK-1
2
1
7-292254-1
12
13
14
15
16
17
18
19
20
21
23
22
(NC)
5VNPD+R
P-GND
DM_C_CK
DM_C_D
D
VC_C
DHPD_C
24V3
24V3
GND
DM_C_CK
DM_C_D
(NC)
24V3
P-GND
DM_M_CK
DM_M_D
5VNPD+R
GND
24V3
D
VC_M
DHPD_M
B23B-CSRK
CN-19
DM_M_LD
CW/CCW
DM_C_LD
CW/CCW
24V3
P
-GND
5VNPD+R
GND
24V3
D
VC_M
DHPD_M
DM_M_D
DM_M_CK
DM_M_LD
CW/CCW
5VNPD+R
P-GND
DM_C_CK
DM_C_D
D
VC_C
DHPD_C
24V3
24V3
GND
DM_C_CK
DM_C_LD
DM_C_D
CW/CCW
24V3
DM_M_LD
P-GND
DM_M_CK
DM_M_D
CW/CCW
(NC)
DM_C_LD
DM_C_CK
DM_C_D
CW/CCW
DM_K_CK
DM_K_D
D
VC_K
CN-18
DM_K_LD
CW/CCW
DM_K_LD
DM_K_CK
DM_K_D
CW/CCW
1
3
5
7
9
11
13
15
17
19
GND
INT24V2
24V3
B40B-PNDZS
CN-23(1/3)
/MC_LD2
/MC_D
A
T
A
/MC_CLK
/MC_LD
HV_REM_MC
MCBKERR
MCCLERR
I
VHR-2N
VHR-2N
VHR-2N
VHR-2N
GB-K
GB-C
GB-M
GB-Y
1
1
1
1
MC PWB
F.
G
SRA-21T
-4
8
2
1
3
4
5
6
7
9
GND
CN-1
10
INT24V2
/MC_D
A
T
A
/MC_CLK
/MC_LD
/MC_LD2
HV_REM_MC
MCBKERR
MCCLERR
24V3
B10B-P
ASK-1
TCS_Y
DVC_Y
DVC_M
DVC_C
DVC_K
TCS_M
TCS_C
TCS_K
DM_Y
DM_M
DM_C
DM_K
GB_K
GB_C
GB_M
GB_Y
MX-7040N OPERATIONAL DESCRIPTIONS 13 – 32
B. Operational descriptions
This converts the electrostatic latent images on the OPC drum gen-
erated by the laser (writing) unit into visible images with toner.
erated by the laser (writing) unit into visible images with toner.
Toner and carrier in the developing unit are stirred and transported
by the mixing roller.
by the mixing roller.
By mixing and transporting, toner and carrier are negatively
charged due to mechanical friction.
charged due to mechanical friction.
The developing bias voltage (AC component and negative DC
component) is applied to the developing roller.
component) is applied to the developing roller.
Negatively charged toner is attracted to the exposed section on the
OPC drum where the negative potential falls due to the developing
bias.
OPC drum where the negative potential falls due to the developing
bias.
If the OPC drum is not exposed, the negative potential is higher
than the developing bias voltage, and toner is not attracted.
than the developing bias voltage, and toner is not attracted.
(1)
Preliminary mixing system
The preliminary mixing section is extended for rapid mixing of sup-
ply toner with developer and stable toner density.
ply toner with developer and stable toner density.
(2)
Developer refresh system
Developer deterioration suppression technology for the purpose of
charging stability and long-life of developer.
charging stability and long-life of developer.
Waste developer is discharged from the developer exit port little by
little as shown in the figure below to maintain developer fresh.
little as shown in the figure below to maintain developer fresh.
Signal name
Name
Function/Operation
DM_KCMY
Drum motor
Drives the developer and the drum.
DVC_KCMY
Development drive clutch
Clutch for development drive
GB-KCMY
Developing bias
Bias for development
TCS_KCMY
Toner density sensor
Controls the toner density in the developing unit.
No.
Name
Function/Operation
1
Developer roller
Latent electrostatic images on the OPC drum are changed to visible images.
2
Mixing roller
Mixing of developer
3
Toner filter
Prevents dispersing of toner
Preliminary mixing section
Developer exit port
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