Samsung SCX-4521F Series Service Manual page 169

6. Line Interface Part
Line interface part helps the machine connect to the PSTN or PABX Line and is made
of almost primary circuit.
Its main function is Line connection, Line state monitoring and TAD interface that
enables a extension telephone or TAD machine to connect to the SCX-4517F machine.
7. Engine Paper Feeding
1) Feeding Type
2) Feeding Standard : Center Loading
3) Feeding Qty: Cassette 150 sheets (75g/ ㎡ , 20lb paper standard)
4) 1 sheet (Paper, OHP, Envelope etc.)
5) Separating Type: Cassette - Friction Pad Type
6) Manual Tray : 1 sheet
7) Driver Type : Driving by Gearing from Main Motor
8) Pick_up Roller Driver : Solenoid
9) Pick up Roller Rubber Material : EPDM+IR μ =1.3 or more
10) Pick up Velocity : 94.8731mm/Sec (Process : 93.0667mm/sec)
11) Paper detecting Sensor : Photo Sensor
12) Paper Size Sensor : None
13) Paper Separating Pad Material : NBB 52°, μ =0.8~1.2
14) Separating Pad Pressure : TBD 150 gf
15) Pick_up Roller RPM : 47.683 RPM
16) Feeding Pressure (Same as Transfer Roller)
: TBD 150~200 gf (SPRING H mm, based on 1sheet)
TBD 150~200 gf (SPRING H mm, based on 150sheets)
17) Paper Exit Type : Face Down
18) Feed Roller Force : TBD Kg.f or more.
19) Spring Feed Tensile Force : TBD gf
20) Feed roller Velocity : mm/sec
21) Feed Roller Material : -
22) Exit Sensor : Photo Sensor
: MP Cassette Type