AR-M550 (serv.man8). (3) Specifications - Sharp Copying Equipment Service Manual (repair manual). Page 4

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AR-M550/M620  SPECIFICATIONS  3 - 4
C. Scanner section (write)
(1)
Type
(2)
Laser unit specifications
(3)
Resolution
(4)
Gradation
D. Image processing section
(1)
Imaging speed
(2)
Photosensitive drum
(3)
Toner
(4)
Developer
(5)
Charging
(6)
Exposure
(7)
Developing system
(8)
Transfer
(9)
Paper separation system
(10)
Discharging
(11)
Cleaning
(12) Waste toner collector capacity
E. Fuser section
(1)
Type
(2) Fuser temperature
(4)
Heat roller
(5)
Pressure roller
(6)
Method
F. Drive section
Scan system
Laser scanning
Rotation speed
34000 rpm
Mirror surfaces
14 surfaces
Laser power
0.385 ±0.04 mW
Laser beam size
Main scan: 60 – 85 mm, 
sub scan: 75 – 110 mm
Laser wavelength
770 – 795 nm
Scan width (sub scan 
direction)
AB series: 420 mm
Inch series: 432mm
Main scanning direction
Sub scanning direction
600dpi
600dpi
2 gradations (1bit)
335 mm/sec
Type
OPC 
φ
80mm
Life
55ppm: 250K, 62ppm: 300K
Capacity
1430g (Other countries), 1180g (Japan)
Capacity
650g
Life
55ppm: 250K, 62ppm: 300K
Type
Corotron
Voltage
–620V±5V
System
Exposure from laser diode
System
Dry, 2-component magnetic brush development
Voltage
–500V±5V (Developing mode) 
+150V (Cleaning mode)
System
Static electricity transfer (transfer belt method)
Transfer section
When cleaning
Voltage
1.5 – 2.0kV
AC 4.5kV, DC –100V
Current
35
µ
A
System
Curvature separation + Separation pawl
System
Discharging lamp method
System
Counter blade system
Capacity
40% of toner capacity
System
Heat roller attachment system
Mode
Control temperature
U.S.A
Canada
Inch
Japan
AB_B
Europe
U.K
Aus.
AB_A
Copy/Print 
mode
Normal mode control temperature
Upper heat roller
200
200
200
185
200
200
200
200
200
Normal mode control temperature
Lower heat roller
200
200
200
185
200
200
200
200
200
Thick paper mode  control 
temperature
Upper heat roller
220
220
220
220
220
220
220
220
220
Thick paper mode  control 
temperature
Lower heat roller
220
220
220
220
220
220
220
220
220
Pre-heat 
mode
Energy saving mode control 
temperature
Upper heat roller
170
170
170
140
170
170
170
170
170
Control temperature when 
resetting from pre-heat to B/W
Lower heat roller
170
170
170
140
170
170
170
170
170
Type
Teflon lined
Life
300K
Type
Silicone rubber roller
Life
300K
Forced release by releasing tabs
Drive section
Motor name
Motor type
Image scanner
Scanner motor
Stepping motor
Developing system
Developing motor
DC brush-less motor
Paper feed and 
conveyance
Paper feed motor
DC brush-less motor
Transfer, OPC drum
OPC drum motor
DC brush-less motor
Fusing
Fusing motor
DC brush-less motor
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