Sharp AR-C250 (serv.man4) Service Manual ▷ View online
4. Paper
(1) Color print paper
The recommendable color print paper is shown below.
Use of the recommendable paper provides the best copy quality.
The standard paper follows it.
Kind
Model
Supplier
Specification
Note
Recommend
paper
paper
Hammermill
LASER PRINT
LASER PRINT
Hammermill [11
×
8.5", 90g/m
2
]
[11
×
17", 90g/m
2
]
Neusiedler
Color Copy
(90g/m
Color Copy
(90g/m
2
)
Neusiedler
[A4, 90g/m
2
]
[A3, 90g/m
2
]
Standard paper
Necosa
Necosa
[11
×
8.5", 75g/m
2
]
[11
×
17", 75g/m
2
]
Hammermill
DP
DP
Hammermill [11
×
8.5", 75g/m
2
]
[11
×
17", 75g/m
2
]
Igepa
Igepa
[A4, 80g/m
2
]
[A3, 80g/m
2
]
OHP sheet
(Specified paper)
(Specified paper)
BG74.6
FOREX
A4 size, 140g/m
2
Made by
FOLEX
FOLEX
When paper of low white level is used, normal copy quality (color re-
production) may not be obtained.
For OHP sheet, be sure to use the specified one.
production) may not be obtained.
For OHP sheet, be sure to use the specified one.
(2) Monochrome print paper
For monochrome print, the following specifications serve as the crite-
ria of applicable or not.
ria of applicable or not.
(Values are under 20
±
1°C, 65
±
2%RH)
Item
Standard paper
Applicable paper
Weight
60 – 90g/m
2
60 – 120g/m
2
Smoothness
Front:
≥
20s
Back :
≥
20s
(BEEK method)
Front:
≥
20s
Back :
≥
18s
(BEEK method)
Vesicularity
≥
7s (BEEK method)
Same as the left.
Untransparency
≥
77%
Same as the left.
Surface
resistance
resistance
1
×
10
10
– 5
×
10
10
Ω
cm
(20
±
1°C, 65
±
2%RH)
≥
5.0
×
10
8
Ω
cm
(20
±
1°C, 65
±
2%RH)
Hardness
Vertical:
≥
17cm
Horizontal:
≥
13cm
(CLARK method)
Same as the left.
Water content
4.5 % – 7.0%
Same as the left.
Thickness
75
µ
m – 110
µ
m
Same as the left.
Dimensions
Standard
±
1mm (
∗
)
Same as the left.
(3) Print paper dimension specification
(
∗
) Standard dimensions are as follows:
B5 (182
±
1
×
257
±
1mm)
B6 (128
±
1
×
182
±
1mm)
A4 (210
±
1
×
297
±
1mm)
A5 (148
±
1
×
210
±
1mm)
A6 (105
±
1
×
148
±
1mm)
8.5"
±
5/128
×
14"
±
5/128 inch
8.5"
±
5/128
×
11"
±
5/128 inch
8.5"
±
5/128
×
8.5"
±
5/128 inch
8.5"
±
5/128
×
13"
±
5/128 inch
(Note)
(Paper which cannot be used)
The following paper cannot be used for printing.
•
Paper with coated surface
•
Paper with rough surface, or too smooth surface
•
Documents which are separated from a pasted book
•
Broken paper, folded paper, embossed paper, dry paper, wet pa-
per, curled paper
per, curled paper
•
Paper with metal tab or clip
•
Paper with holes, cutout, or perforations
5. Environmental conditions
(1) Transit environment (sealed)
Max. change: Temperature 15°C/hour,
Relative humidity 15%RH/hour, without dew
Tempera-
ture (min)
ture (min)
Humidity
(min)
Tempera-
ture (mid)
ture (mid)
Humidity
(mid)
Tempera-
ture (max)
Humidity
(max)
Period
– 5°C
10%
40°C
90%
—
(2) Storage environment (sealed)
Max. change: Temperature 15°C/hour,
Relative humidity 15%RH/hour, without dew
Tempera-
ture (min)
ture (min)
Humidity
(min)
Tempera-
ture (mid)
ture (mid)
Humidity
(mid)
Tempera-
ture (max)
Humidity
(max)
Period
– 5°C
10%
40°C
90%
—
Tempera-
ture (min)
ture (min)
Humidity
(min)
Tempera-
ture (mid)
ture (mid)
Humidity
(mid)
Tempera-
ture (max)
Humidity
(max)
Period
15°C
20%
30°C
80%
35°C
60%
—
RH
90%
10%
-5˚C
40˚C
40˚C, 90%
Humidity
Temperature
RH
90%
10%
-5˚C
40˚C
40˚C, 90%
Humidity
Temperature
RH
80%
20%
15˚C
35˚C
30˚C, 80%
35˚C, 60%
(Unsealed condition)
Humidity
Temperature
3 – 10
[5] EXTERNAL VIEW AND INTERNAL STRUCTURE
B. Internal parts
(1) Cross section
No.
Parts
Note
Name
Function and operation
1
No. 2 mirror
Sends the original image to No. 3 mirror.
2
No. 3 mirror
Send the original image to the CCD.
3
Y-LSU unit
Converts yellow components of image signals sent from the ICU PWB into laser
beams, and radiates the beams onto the OPC drum.
beams, and radiates the beams onto the OPC drum.
4
M-LSU unit
Converts magenta components of image signals sent from the ICU PWB into laser
beams, and radiates the beams onto the OPC drum.
beams, and radiates the beams onto the OPC drum.
5
No. 1 mirror
Sends the original image to No. 2 mirror.
6
Scanner lamp
Radiates light to the CCD for scanning the original image.
7
CCD lens
Reduces the original image (light) and project it to the CCD.
8
C-LSU unit
Converts cyan components of image signals sent from the ICU PWB into laser
beams, and radiates the beams onto the OPC drum.
beams, and radiates the beams onto the OPC drum.
9
CCD PWB
Reads the original image and converts it into electrical signals.
10
K-LSU unit
Converts black components of image signals sent from the ICU PWB into laser
beams, and radiates the beams onto the OPC drum.
beams, and radiates the beams onto the OPC drum.
11
Developing roller (Y)
Attaches toner on the OPC drum. (Y)
12
Developing roller (M)
Attaches toner on the OPC drum. (M)
13
Developing roller (C)
Attaches toner on the OPC drum. (C)
14
Developing roller (K)
Attaches toner on the OPC drum. (K)
15
Upper resist roller
Transports paper to the transfer section.
16
Lower resist roller
Transports paper to the transfer section.
17
Paper transport roller 1
Transports paper to the transfer resist roller.
18
Idle roller
Applies pressure to paper and the transport roller.
19
Idle roller
Prevents against paper skew.
20
Paper transport roller 1
Transports paper to the transfer section (transfer resist roller).
21
Paper feed tray (No. 1 paper tray)
Feeds paper to the paper transport section.
22
Separation roller (No. 1 paper tray)
Separates paper and transport it to the paper transport section.
1 2
3 4
5
6
7
8
9
11
12
13
14
15
16
12
13
14
15
16
17
18
18
19
20
21
22
23
24
25
26
27
28
29
30
22
23
24
25
26
27
28
29
30
31
33
34
34
37
39
40
41
42
43
44
45
46
47
48
49
67
51
52
53
54
55
56
57
58
59
60
35
32
36
61
62
63
64
65
66
10
38
50
68
75
70
69
72
71
73
74
76
77
5 – 4A
No.
Parts
Note
Name
Function and operation
23
Paper pickup roller (No. 1 paper tray)
Sends paper to the paper feed roller.
24
Idle roller
Applies pressure to paper and the transport roller.
25
Paper transport roller 2
Transports paper to the transport roller 1.
26
Paper feed roller (No. 2 paper roller)
Feeds paper to the paper transport section.
27
Separation roller (No. 2 paper tray)
Separates paper and prevents against double feed.
28
Paper pickup roller (No. 2 paper tray)
Sends paper to the paper feed roller.
29
Idle roller
Applies pressure to paper and the transport roller.
30
Paper transport roller 3
Transports paper to the transport roller 2.
31
Paper feed roller (No. 3 paper tray)
Feeds paper to the paper transport section.
32
Separation roller (No. 3 paper tray)
Separates paper and prevents against double feed.
33
Paper pickup roller (No. 3 paper tray)
Feeds paper to the paper feed roller.
34
Idle roller
Applies pressure to paper and the transport roller.
35
Paper transport roller 4
Transports paper to the transport roller 3.
36
Paper feed roller (No. 4 paper tray)
Feeds paper to the paper transport section.
37
Separation roller (No. 4 paper tray)
Separates paper and prevents against double feed.
38
Paper pickup roller (No. 4 paper tray)
Sends paper to the paper feed roller.
39
Transfer roller (K)
Applies a transfer voltage to the transfer belt.
40
OPC drum unit (K)
Forms black latent electrostatic images.
41
Main charger unit (K)
Charges the black OPC drum negatively.
42
OPC drum unit (C)
Forms cyan latent electrostatic images.
43
Transfer roller (C)
Applies a transfer voltage to the transfer belt.
44
Main charger unit (C)
Charges the cyan OPC drum negatively.
45
OPC drum unit (M)
Forms magenta latent electrostatic images.
46
Transfer roller (M)
Applies a transfer voltage to the transfer belt.
47
Main charger unit (M)
Charges the magenta OPC drum negatively.
48
OPC drum unit (Y)
Forms yellow latent electrostatic images.
49
Transfer roller (Y)
Applies a transfer voltage to the transfer belt.
50
Main charger unit (Y)
Charges the yellow OPC drum negatively.
51
Transfer belt
Transfers toner images on the OPC drum to paper.
52
Waste toner bottle
Collects waste toner.
53
Oil tank
Stores oil.
54
Lower heater lamp
Heats the lower heat roller.
55
Lower heat roller
Applies a pressure and heat to toner and fuses it to paper.
56
Lower separation pawl
Separates paper mechanically from the lower heat roller.
57
Fusing transport roller
Transports paper to the paper exit roller.
58
ADU gate
Switches the paper route in the duplex mode.
59
Paper exit roller
Discharges paper outside the machine.
60
Idle roller
Applies pressure to paper and the paper exit roller.
61
Idle roller
Applies pressure to paper and the transport roller.
62
Upper cleaning roller
Cleans the fusing roller.
63
Upper heat roller
Applies a pressure and heat to toner and fuses it to paper.
64
Upper heat lamp
Heats the upper heat roller.
65
Oil roller
Applies oil to the upper heat roller.
66
Oil blade
Controls oil quantity on the oil roller to be even.
67
Separation pawl
Separates paper from the transfer belt mechanically.
Japan only
68
Waste toner bottle
Collects waste toner from transfer belt.
69
Paper pickup roller
Sends paper to the paper feed roller.
Manual paper
feed section
feed section
70
Paper pickup solenoid
Presses paper onto the paper pickup roller.
71
Manual paper feed roller
Feeds paper to the paper transport section.
72
Manual paper feed clutch
Transmits the paper feed drive motor power to the manual paper feed unit.
(Controls ON/OFF of the manual paper feed unit.)
(Controls ON/OFF of the manual paper feed unit.)
73
Separation roller
Separates paper to prevent against double feed.
74
Manual transport roller
Applies a pressure to paper and the transport roller to give the transport roller
power to the paper.
power to the paper.
75
Idle roller
Applies a pressure to paper and the transport roller and gives a transport power of
the transport roller to the paper.
the transport roller to the paper.
76
Resist roller cleaner
Clean the resist roller.
AR-C160/C270
5 – 5A
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