1. Samsung A3 Monochrome Overview
SVC Innovation Group
Samsung IT Solutions Business

2. Contents H/W Change Point Frame Imaging Unit Fuser Paper Handling
Drive
LSU

3. HW CHANGE POINT – Frame(1/4)
COLOR
MONO
OZONE FILTER
COVER SHIELD
COVER-LEFT
UPPER & LOWER
WTB
LSU
COVER-INNER 3

4. HW CHANGE POINT – Frame(2/4)
COLOR
MONO
2ND EXIT
FACE-UP TRAY 4

5. HW CHANGE POINT – Frame(3/4)
COLOR
MONO
[EXIT DRIVE]
COVER –REAR UPPER
SHIELD-MAIN UPPER
FRAME-REAR SHIELD MAIN
FRAME-SHIELD ENGINE
COVER –REAR UPPER
FRAME-REAR SHIELD
MA IN UPPER 5

6. HW CHANGE POINT – Frame(4/4)
COLOR
MONO
ITB
WTB
TONER Y,M,C,K
IMAGING UNIT Y,M,C,K
IMAGING UNIT
CARTRIDGE-WTB
TONER K 6

7. Non-Electrostatic Film
Cartridge-Drum Unit Layout
Cleaning Blade
2.0t (Mono only)
Waste Toner Auger :
Φ10 (Mono only)
Eraser Lamp
(attached to set)
Pin Scorotron
(Color common)
Paper Separator
(Mono only)
OPC Drum
Φ30 (Mono only)
Doctor Blade
Non-Magnetic 1.5t
(Mono only)
Mag. Roll Φ18.2
(Mono only)
Paper Guide Sheet
Non-Electrostatic Film
(Mono only)
Auger Mix Φ18
(Mono only)
T/C Sensor
(Color common )
Auger Supply Φ18
(Mono only)

8. Cartridge-Drum Unit Air Flow Layout
Blow out
(Ozone Filtering)
Blow in
(Air curtain for blocking paper dust)
Blow out
(Suction of dispersed toner )

9. Cartridge-Drum Unit Main Part Spec.
List
Color(35ppm)
Mono(40ppm)
Yield
Drum Cartridge : 75K(Y.M.C.Bk)
Toner Cartridge : 20K(Y.M.C) 25K(Bk)
Drum Cartridge : 100K(Bk)
Toner Cartridge : 35K(Bk)
Developer
Toner+Carrier ←
OPC Drum
Out Diameter : Φ30, Length : 360mm
Development Gap : 0.4±0.05
Out Diameter : Φ30, Length : 360mm
Cleaning
Blade
Width : 2.0t, Length : 8.5±0.1
Hardness : 76±3 degree
Hardness : 72±3 degree
Pin Scorotron
Gap ; 0.8±0.1mm
Mag. Roll
Out Diameter : Φ18.2±0.03
Magnetic Main Force(S1) : 115mT
Magnetic Main Force(S1) : 112.5mT
T/C Sensor
Toner Density Transmission Sensor(TDK )
Doctor
Doctor Gap : 0.55~0.6mm,
Length : 336mm
Doctor Gap : 0.55~0.6mm,
Length : 332.4mm
Auger
Developer : 330g
Mixing Auger : Φ18(Single Spiral, CCW)
Supply Auger : Φ18(Double Spiral, CCW)
Developer : 345g
Supply Auger : Φ18(Double Spiral, CW)

10. Free Belt System ( IFS ) 10 IFS (Instant Fusing System)
-. Thin SUS Belt (320µm) application ( Warm-up time is under 25 sec)
-. Roller Pressure Activation
9.0 kg/f 1 2 8 9 7
Lamp 5 4 3 6
Gear -Drive
[ IFS Concept Drawing ]
[ Ex : 2 roller system]
[ IFS Part Name & Material ] 10

11. [ Heat Ass’y exploded View ]
Free Belt System ( IFS )
Brkt Nip
Bush Belt Front
Holder Inner
Brkt Inner Belt
Drum Belt
Brkt Gap
Bush Belt Rear
Lamp (1300W)
Roller Pressure
Brkt Nip Sub Ellipse
[ Heat Ass’y exploded View ] 11

12. H/W Protection Thermistor
Temperature Control & Protection
Temperature Control
(Lamp duty control)
NC sensor
( Temperature sensing )
H/W Protection Thermistor
Thermostat
Lamp cut-off
NC sensor
-. Tc : Center Lamp duty control
-. Ts : Side Lamp duty control
2. H/W Protection Thermistor
-. Safety device for overheating
3. Thermostat
-. Mechanical Safety device for overheating
[ Temperature Control Flow-Chart ]
Lamp A (600W)
Lamp B (700W)
THERMOSTAT
NC sensor : Tc
NC sensor : Ts
H/W protection Thermistor
[ Sensor Location] 12

13. [ NC Sensor – exploded view ]
Temperature Control & Protection
◈ NC sensor ( Non-Contact temperature sensor )
-. Function : Temperature sensing device on LBP Heater surface
-. Method : Senses infrared rays on the surface
-. Process : Temperature sensing by comparing voltage drop of compensation voltage
[ Voltage_drop = compensation_voltage(Vc) - detection_voltage(Vd)]
[ NC Sensor – exploded view ]
Rivet
FPC board
Spacer
Holder
Heater
Sensor
Infrared rays
[ Non-Contact Sensor ]
[ Circuit Diagram]
◈ Thermostat
-. Basic structure
① Base frame
② Bimetal : Low_expansion (Ni+Fe),
High_expansion (Ni+Mn+Cu or Ni+Fe+Cr etc.)
③ Disk
④ Pin (Ceramic)
⑤ Cap (Aluminum)
-. Process
① Bimetal consists of two different coefficients of thermal expansion.
Excessive heating of bimetal surface will cause the bimetal to flip. (Snap Through)
② The pin under the Bimetal will push a switch and cut off current to the lamp.
[ Normal ]
[ Overheating ] 13

14. HW CHANGE POINT – Fuser(1/2)
Color
Mono
Main structure
Belt
IFS
Fusing system
Belt driving
(Belt : Electrically conductive PI)
Free Belt
(Belt : SUS 304 )
Main composition
Belt / Pressure Roller (LSR)
Fuser Roller / Heat Roller
Belt structure / Pressure Roller (sponge)
Lamp
Dual 1300W (Normal Lamp)
Dual 1300W (High performance Lamp)
Replacing system
Handle Lever + Screw (2 points)
Screw (4 points)
Pressing system
Spring(Compression) – one side 14 Kg
Spring(Tension) – one side 4.5 Kg
Pressure control system
Step Motor (on Fuser) + Cam
☞ Pressure Roller Moving
Step Motor (on Set) + Cam
☞ Belt system Moving
Jam control
Step Motor ( backward acting )
Connect Jam control Lever and Side-cover
Torque
4.5 Kgf.cm Max
8.0 Kgf.cm Max
Media (Max)
320mm (SRA3)
305mm(12’x18’) 14

15. Draw connector ( when a fuser is assembled in the Set )
HW CHANGE POINT – Fuser(2/2)
Color
Mono
Main structure
Belt
IFS
WUT
45 second
25 second
FCOT
Color 8.5sec / Mono 7.5sec
Mono 5 sec
Sensor
Thermostat : 2ea
Square Bimetal Type 179℃
Gap 2.1~2.7mm
NC Sensor : 2ea
Gap 5.2~5.8mm
H/W Protection : Contact Thermistor 2ea
Gap 0.5~1.0mm
- Thermostat : 2ea
Square Bimetal Type 190℃
Gap 3.0~3.6mm
Gap 4.5~5.5mm
Power
Draw connector ( when a fuser is assembled in the Set ) 15

16. HW CHANGE POINT – Paper-Handling(1/12)
◆ Main Specification
Part
Specification
Remark
Cassette
520 Sheet(80gsm) Tray2 x 2, Height 90㎜
Auto Size Sensing, Universal Type
Center Loading
12”×18”
Media
Max.:12”×18” (305×457㎜)
Min. : 3.5”×5.8”(89×148㎜)
Weight : 60 ~ 216g/㎡
Bypass
Pick Up
Rubber φ20 ㎜,
Retard Roller Type
Urethane
Feeding Roller
FRR (Forward / Reverse Roller)
Regi. Roller
Reflection Type Sensor, Dust exclusion device application
Release device application if you open Side Cover
Exit
Stacking 500 Sheets → Main Exit Tray 125 Sheets → 2nd Exit Tray
Duplex
Efficiency : 100% (3Batch)
Excluding
first Sheet
Multi Purpose
Feeder
100 sheets
Pick up/Separation type: Retard Roller

17. HW CHANGE POINT – Paper-Handling(2/12)
◆ Paper Path and Sensing Specification 1
Signal
Name
Function /
Operation
Type
Remark
T1-A
Tray1 paper size detection
Detects tray1 paper size (installation)
Switch
5 built-in type
T1-B
Tray1 paper remaining quantity detection
Detects tray1 paper remaining quantity
Transmission
2 built-in type
T1-C
Tray1 paper empty detection
Detects tray1 paper empty
T1-D
Tray1 upper limit detection
Detects tray1 upper limit
T1-E
Tray1 transport detection
Detects tray1 paper pass
Reflect
T2-A
Tray 2 paper size detection
T2-B
Tray2 paper remaining quantity detection
Detects tray2 paper remaining quantity
T2-C
Tray2 paper empty detection
Detects tray2 paper empty
T2-D
Tray2 upper limit detection
Detects tray2 upper limit
T2-E
Tray2 transport detection
Detects tray2 paper pass
RE-A
Paper regi time detection
Detects paper regi. Time
RE-B
Transparency detection
Detects transparency
FU-A
Paper curl detection
Detects paper position
3 built-in type
EX-A
Paper jam detection
Detects fuser jam
EX-B
Exit tray1 jam detection
Detects exit jam
EX-C
Exit tray1 paper full detection
Detect paper full
EX-D
Return transport path detection
Detects return(Exit2 tray) paper pass
EX-E
2nd Exit tray jam detection
Change paper path
EX-F
2nd Exit tray paper full detection
EX-G
Return Path Solenoid
Plunger
T1-A
T2-A
T1-C
T1-D
T2-C
T2-D
T2-B
T1-B
T1-E
T2-E
RE-A
RE-B
FU-A
EX-E
EX-C
EX-B
EX-A
EX-G
EX-F
EX-D

18. HW CHANGE POINT – Paper-Handling(3/12)
◆ Paper Path and Sensing Specification 2
MP-A
MP-E
MP-B
MP-C
MP-F
MP-H
MP-G
MP-D
T2-F
T1-F
Signal
Name
Function /
Operation
Type
Remark
MP-A
MPF solenoid
MPF pick up roller up/down
Plunger
MP-B
MPF media size detection
Detects MPF paper size
Resistance
MP-C
MP media size detection (Long media)
Transmission
MP-D
MPF Paper empty detection
Detects MPF paper empty
MP-E
MPF clutch
MPF power Switching
e-Clutch
MP-F
Duplex clutch
MP-G
Duplex jam detection 2
Detects duplex jam 2
MP-H
Duplex jam detection 1
Detects duplex jam 1
T1-F
Tray1 Lift Motor
Lifting knock up plate
DC Motor
T2-F
Tray2 Lift Motor
※ Quantity : Default value is 1
(If there is not additional remark)

19. HW CHANGE POINT – Paper-Handling(4/12)
◆ Cassette Design Direction
Lift Gear
Auto Size Sensing
Cover
Knock Up
Paper Guide F
Paper Guide R
  1) Feeding of plain paper and Special Media Paper is supported.
  2) Auto sensing of 12 different kinds of paper.
  3) Max. Media Size : 12"×18“ (305×457㎜)
◆ Cassette Specifications
1) Structure : Cassette Type, plain paper recognized automatically.
  2) Capacity : 520 Sheets (80g/㎡)
  3) Paper : 
         -. Plain Paper : A5, A4, A3, B5, B4, Letter, 11"×17"(Ledger), Statement, Legal
         -. Special Paper : 12"×18“, Label, Card stock
 4) Weight :   Plain Paper 60 ~ 163g/㎡
 5) Plate knock up Lift Type : Lift Motor + Up Limit Sensor

20. HW CHANGE POINT – Paper-Handling(5/12)
◆ Pick-up Design Direction
1) Retard Roller used to achieve high quality Paper feeding for A3 25 ~ 50 ppm MFP.
 2) Pick Up Roller is φ 20mm making the first Cassettes’ height 90mm.
3) Good quality material for long life (Urethane, Life = 225K)
4) Feed Roller built-in with wall connector for ease of service.
Pick Up Roller
Empty Sensor
Forward Roller
Retard Roller
◆ Pick-up Specifications
1) Type  : Center Loading  reverse separation
  2) Pick Up / Forward / Retard Roller
        a) Coefficient of friction : Over 1.2
        b) Material : Urethane (Hardness ; 50˚± 5˚)
        C) The velocity ratio : Forward Roll VS Pickup Roll (1:1) , Forward Roll VS Retard Roll (1:0.67)
  3) Torque Limiter : Torque ; (350±7%)gf
  4) Picking Force  : 250±5% gf            
  5) Retard Roll Pressure : 108±5% gf
  6) Pick up Clutch On, Off Time : On ≒ 400mmsec , Off ≒ 930mm/sec (Letter Standard)
  7) Paper feeding Velocity : 40PPM in Letter LEF (Long Edge Feeding)

21. HW CHANGE POINT – Paper-Handling(6/12)
◆ Regi. Design Direction
1) Main Frame fixed for enhanced Skew quality
  2) Easy roller replacement by accessing side cover.
3) Jam lever attached to RegiRoller for ease of jam removal.
Regi Roller
Shaft-Regi
Regi Sensor
OHP Sensor
Jam Removal Lever
◆ Regi. Specifications
1) Skew in Simplex
         -. Top Skew  : 2.0mm/241.3mm  ( Option : 2.5mm/241.3mm)
         -. Side Skew : 1.5mm/241.3mm  ( Option : 2.0mm/241.3mm)
  2) Skew in Duplex
         -. Top Skew  : 3.0mm/241.3mm  ( Option : 3.5mm/241.3mm)
         -. Side Skew : 2.3mm/241.3mm  ( Option : 2.5mm/241.3mm)
  3) Dog Ear, Nicks, Wrinkling
         -. Plain Paper   : 1/5,000
         -. Special Media : 1/1,000
  4) Margin
         -. Top Margin   : 4.23 ± 2 mm  ( Tray2, 3 : 4.23 ± 2.5 mm)       
         -. Left, Right Margin  : 3 ± 2 mm  ( Tray2, 3 : 3 ± 2.5 mm) 

22. HW CHANGE POINT – Paper-Handling(7/12)
◆ Side Design Direction
1) Slide Open Method for ease of replacement parts and jam removal.
2) Duplex unification design.
3) Paper Path stabilization and twist prevention.
◆ Side Specifications
1) Structure 
Slide Rail for easy of service
Presses located in 4 directions(left/right/up/down) for twist prevention.
Stabilized alignment through fixed point at frame unit and exit unit.
2) Duplex Specifications
a) Efficiency : 40ipm (100% , 3 Batch)
b) Paper :  A4, A3, B5, B4, Letter, Ledger, Statement, Legal,12"×18”,
  c) Weight : Plain Paper60 ~ 163g/㎡
d) Speed : Into 2 times 100% efficiency achievement  

23. HW CHANGE POINT – Paper-Handling(10/12)
◆ MPF Design Direction
1) Retard Roller used to achieve high quality Paper feeding for A3 25 ~ 50 ppm MFP.
  2) Easy roller replacement by accessing side cover.
3) Auto sensing of 12 different kinds of paper. (Volume Resistance + Photo Sensor)
MPF Tray
MPF Clutch
MPF Pick Up Roller
Long Paper Sensor
Empty Sensor
◆ MPF Specifications
1) Type :  Center Loading  reverse separation type
  2) Pick Up / Forward / Retard Roller
    a) Coefficient of friction : Over 1.2
   b) Material : Urethane (Hardness ; 50˚± 5˚)
    c) Speed ratio : Forward Roll VS Pickup Roll (1:1)
3) Torque Limiter : Torque ; (350±7%) gf
  4) Picking Force  : 220±5% gf        
  5) Retard Roll force : 170±5% gf
6) Tray Capacity : 100sheets (Weight 80g/㎡ standard)
7) Media : Max 12”×18” (305×457㎜) Min 3.5”×5.8” (89×148㎜)
8) Weight : Plain paper 60 ~ 216g/㎡
  9) Paper Feeding Speed: 40PPM in Letter LEF(Long Edge Feeding)

24. HW CHANGE POINT – Paper-Handling(11/12)
◆ Exit Design Direction
1) Stack Height 66mm (500 Sheets Stack standard)
2) Duplex unification design
3) Dual use Fuser Motor
4) 2nd Exit can be installed.
◆ Exit Specifications
1) Stack Structure
Sheets (80gsm) ( Height of Cover Top ~ Exit Entrance : 68mm)
- Paper Stack Quality: Paper Width ± 15mm
2) Out Bin full Sensor

25. HW CHANGE POINT – Paper-Handling(12/12)
◆ 2nd Exit Design Direction
1) A5 ~ A3, Ledger paper
  2) Dual use Duplex Path
3) Can be used even if finisher is installed
◆ 2nd Exit Specifications
1) Stack Structure
- Paper Size : A5 ~ A3, Ledger
- Paper Weight : 60gsm ~ 163 gsm
- Stack Volume : 125 Sheets (80gsm standard)
  2) Dual use Duplex Path
3) Out bin Full Sensor
4) Can be used even if duplex is applied (Duplex Efficiency 50~70%)
5) Sensor can recognize if it is installed or not

26. HW CHANGE POINT – Drive(1/3)
COLOR
MONO
[MAIN DRIVE]
- OPC/DEVE ; BLDC(4) , E-Clutch(4)
- ITB ; BLDC
- T1 Engage ; PM STEP
[MAIN DRIVE]
- OPC/DEVE ; BLDC
- REGI, /MP/Duplex ; BLDC , E-CLUTCH
REGI. CLUTCH
OPC/Deve. BLDC
REGI./MP/DUP BLDC
[REGI./MP/DUP DRIVE]
- REGI ; Hybrid STEP
- MP/Duplex ; Hybrid STEP 26

27. HW CHANGE POINT – Drive(2/3)
COLOR
MONO
[FUSER RELEASE DRIVE]
- Driving system inside fuser unit
[FUSER RELEASE DRIVE]
- Driving system outside the fuser unit
[DUCT DRIVE]
: A driving system is added.
- Toner duct is a horizontal structure.
Color : No driving system
- Toner duct is a vertical structure. 27

28. HW CHANGE POINT – Drive(3/3)
COLOR
MONO
[EXIT DRIVE]
[EXIT DRIVE]
- The bracket is the only new part.
Driving systems of Pick-up, WTB & Toner-bottle are common in both color & mono devices. 28

29. HW CHANGE POINT – LSU(1/3)
COLOR
MONO
[Major performance]
- Optical parts : motor(2) ,LD PBA(4) ,Flens(8)
- Additional devices : skew assy, shutter assy, joint PBA
- Size : L496*W358*H75
- Weight : 5.66Kg
[Major Performance]
- Optical parts : motor(1) ,LD PBA(1), Flens(2)
- Additional devices : No additional device
- size : L275*W410*H40
- Weight : 1.6kg 29

30. HW CHANGE POINT – LSU(2/3)
COLOR
MONO
[Required additional PBA B’d]
- multiple connectors are used
[Not Required additional PBA B’d ]
- 1 connector is used
In the case of Color, LSU consists of 4 laser beams (for K, C, M, Y color)
In the case of mono, LSU consists of 1 laser beam (for K color). 30

31. HW CHANGE POINT – LSU(3/3)
COLOR
MONO
[shutter assy]
- Because LSU and OPC are in vertical position, shutter drive is used for protecting cover glass pollution.
[No shutter assy]
- Because LSU and OPC are in parallel position, no need for special shutter drive to cover glass pollution.
Cover glass
Optical system including optical parts is the same as color device,
but (compared with color) sub-parts and additional devices are reduced, so frame and structure is different. 31

32. Samsung IT Solutions Business
Thank You