II-15
2.2
Printer Mechanism
2.2.1
Paper Transfer
1)
Paper Supply
The
paper pick-up roller
picks up one sheet of paper from the paper feeder every time it
is rotated and feeds it to the
paper feed roller
.
Fig. 2-20
The paper is gripped between the pick-up roller and the
separation pad
and separated
into individual sheets.
The pick-up roller is directly connected to the sector gear, whose rotation is forcibly
stopped by the gear stopper. When the pick-up solenoid is activated, the clutch
mechanism is engaged by the solenoid action and the sector gear is driven; when it has
completed one full turn its rotation is stopped again by the gear stopper. The paper
drawn out by the pick-up roller pushes against the top of form sensor lever and the paper
top position/absence of paper is detected by sensing the motion of the lever.
2)
Paper Registration
When paper picked up from the multi-purpose sheet feeder pushes against the top of
form sensor actuator, the registration sensor lever is caused to turn, and the photo
sensor detects this motion. When this signal from the sensor is detected the paper feed
roller is stopped temporarily by the clutch. The paper is fed to the nip point between the
paper feed roller and the pinch roller in the multi-purpose sheet feeder, and the skew of
the paper is corrected by pushing the leading edge of the paper against the nip point.
When the paper feed roller starts to be rotated again when it is released by the clutch,
paper, with the leading edge correctly aligned, is fed by the paper feed roller and is
transported to the
transfer roller
.
Clutch mechanism (engaged/released by the solenoid assembly)
Released when the solenoid is ON and engaged when the solenoid is OFF.
Fig. 2-21
Hopper plate
Papers
Pick-up roller
Registration sensor lever
Separation pad
Paper
Pinch roller
Transfer roller
Drum
Paper feed roller
Содержание HL-P2000
Страница 1: ......
Страница 27: ...II 8 1 3 8 Engine I O Fig 2 10 shows the engine interface circuit Fig 2 10 ...
Страница 69: ...III 28 4 PACKING Fig 3 48 Documents Accessory carton Pad Pad Printer Bag Carton Drum Unit ...
Страница 92: ...IV 23 4 4 Location of Feed Roller Shaft and Grounding Contacts Fig 4 7 Feed roller shaft For paper feed roller ...
Страница 115: ...Appendix 5 Main PCB Circuitry Diagram 1 3 CODE UK3981000 B512018 CIR 1 3 NAME A 6 ...
Страница 116: ...Appendix 6 Main PCB Circuitry Diagram 2 3 CODE UK3981000 B512018 CIR 2 3 NAME A 7 ...
Страница 117: ...Appendix 7 Main PCB Circuitry Diagram 3 3 CODE UK3981000 B512018 CIR 3 3 NAME A 8 ...
Страница 118: ...Appendix 8 Panel Sensor PCB Circuit Diagram CODE UK4010000 B48K303CIR NAME A 9 ...
Страница 119: ...Appendix 9 Scanner Panel PCB Circuit Diagram CODE UK3982000 B512019 CIR NAME A 10 ...
Страница 120: ...Appendix 10 Scanner Sensor PCB Circuit Diagram A 11 B512020 CIR CODE UK3983000 NAME ...
Страница 170: ......
Страница 249: ...APPENDIX A 9 HP LaserJet IIP EPSON FX 850 IBM Propritner XL EPSON FX 850 ...
Страница 260: ...Aug 98 84U007BE0 PARTS REFERENCE LIST MODEL MFC P2000 HL P2000 R LASER PRINTER ...