II-27
2.2
Paper Transfer
2.2.1
Paper Supply
The 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. 2-31
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.
2.2.2
Paper Registration
When paper picked up from the multi-purpose sheet feeder (MPF) 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. 2-32
Hopper plate
p
Pick-up roller
Registration sensor lever
Separation pad
Paper
Pinch roller
Transfer roller
Drum
Paper feed roller
Содержание HL-1020
Страница 1: ......
Страница 36: ...II 20 Fig 2 22 shows the CDCC interface circuit Fig 2 22 HL 1050 ...
Страница 37: ...II 21 1 3 10 Engine I O Fig 2 23 shows the engine interface circuit Fig 2 23 HL 820 1020 1040 ...
Страница 38: ...II 22 Fig 2 24 shows the engine interface circuit Fig 2 24 HL 1050 ...
Страница 67: ...III 18 4 PACKING Fig 3 32 Documents Accessory carton Pad Pad Printer Bag Carton ...
Страница 87: ...IV 20 3 4 Location of Feed Roller Shaft and Grounding Contacts Fig 4 7 Feed shaft roller For feed roller ...
Страница 101: ...CODE UK4007000 B48K312CIR NAME V 5 Appendix 5 Main PCB Circuit Diagram HL 820 1020 1040 1 2 ...
Страница 102: ...Appendix 6 Main PCB Circuit Diagram HL 820 1020 1040 2 2 CODE UK4007000 B48K312CIR NAME A 6 ...
Страница 103: ...Appendix 7 Main PCB Circuit Diagram HL 1050 1 5 CODE UK4041000 B512001CIR NAME A 7 ...
Страница 104: ...Appendix 8 Main PCB Circuit Diagram HL 1050 2 5 CODE UK4041000 B512001CIR NAME A 8 ...
Страница 105: ...Appendix 9 Main PCB Circuit Diagram HL 1050 3 5 CODE UK4041000 B512001CIR NAME A 9 ...
Страница 106: ...Appendix 10 Main PCB Circuit Diagram HL 1050 4 5 CODE UK4041000 B512001CIR NAME A 10 ...
Страница 107: ...Appendix 11 Main PCB Circuit Diagram HL 1050 5 5 CODE UK4041000 B512001CIR NAME A 11 ...
Страница 108: ...Appendix 12 Panel Sensor PCB Circuit Diagram CODE UK4010000 B48K303CIR NAME A 12 ...
Страница 117: ...Apr 98 84U005BE0 PARTS REFERENCE LIST MODEL HL 820 1020 1040 1050 R LASER PRINTER ...
Страница 122: ...1 1 1 MODEL HL 1050 84U 861 101 103 104 84U 862 106 6 4 5 MAIN PCB HL 1050 OTHERS ISRAEL 3 ...
Страница 133: ...R Lower Tray Unit for HL 2400C Color Laser Printer PARTS REFERENCE LIST MODEL LT 24CL Feb 1999 54S003BE0 ...
Страница 135: ...CONTENTS LOWER TRAY UNIT List 1 Drawing 2 ...
Страница 137: ... 2 GENERAL DRAWING MODEL LT 24CL 54S X06 4 3 1 6 5 2 7 ...
Страница 138: ...R Lower Tray Unit for HL 2400C Color Laser Printer SERVICE MANUAL MODEL LT 24CL Feb 1999 54S004BE0 ...
Страница 214: ......
Страница 296: ...USER S GUIDE A 12 HP LaserJet IIP 6P EPSON FX 850 IBM Propritner XL EPSON FX 850 ...