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Multiple sheet feed prevention

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Chapter 6 Principles of Operation 3.1.3 Multiple sheet feed prevention The sheets set in a tray or a cassette may be stuck together at the edge due to microscope curl-up along the cutting plane caused by the guillotine, etc. The stuck sheets cause a multiple sheet feed or a jam. The mechanism for separating these stuck sheets is called "ARRF (Active Retard Roll Feeder) method". The sheets are carried by the Paper Feed Roller to the position between the Paper Feed Roller and the Separator Roller. The Separator Roller is being pushed toward the Paper Feed Roller by a spring tension. When two sheets are carried concurrently, the top sheet is separated from the bottom sheet by the friction between the Separator Roller allowing only the top sheet to be fed. When only one sheet is carried, two kinds of friction are concurrently generated between the Paper Feed Roller and the sheet (carrying force), and between the Separator Roller and the sheet (retaining force). However, the friction by the Separator Roller is released because the Separator Roller turns free by the torque limiter (CLUTCH ASSY FRICTION) provided on its shaft. The release of the Retard Roll friction allows the sheet to be fed by the Paper Feed Roller. PAPER FEED ROLLER (Takeaway Roll) PAPER FEED ROLLER (Feed Roll) SEPARATOR ROLLER SEPARATOR ROLLER SEPARATOR ROLLER CLUTCH 6 - 22 Ten06007KA

Section	Page
Dell 5110cn Service Manual - Introduction	1
Copyright notice	2
Cautions for operation	3
1. About this manual	4
2. Marks giving caution	4
3. Related documents	4
4. Safety	5
4.1 Power source	5
4.2 Driving units	6
4.3 High-temperature units	6
4.4 Laser beams	7
4.5 Warning/caution labels	8
4.5.1 Caution label for high-temperature units	8
4.5.2 Caution label regarding toner cartridge	8
4.5.3 Caution label regarding Imaging Drum and Transfer Roller	9
4.5.4 Caution label regarding MPF and paper tray	10
4.5.5 Caution label regarding Developer Frame	10
4.5.6 Caution label regarding Print Head	11
Unpacking the Printer	12
Table of Contents	13
Dell 5110cn Service Manual - Chapter 1 Troubleshooting	14
Contents	14
1. Progressing with the Troubleshooting	18
1.1 Flow of Troubleshooting	18
1.2 Preparatory Requirements	19
1.3 Cautions for Service Operations	20
1.4 Cautions for FIP Use	21
2. Level 1 FIP	23
2.1 Level 1 FIP	23
2.2 Flow of Level 1 FIP	23
3. Level 2 FIP	25
3.1 Level 2 FIP	25
3.2 Status Code List	26
3.3 LCD Display	32
3.4 Error Code FIP	42
FIP-1 001-360/001-363/001-364/001-366 Restart Printer	42
FIP-2 001-361/001-363/001-365/001-366 Restart Printer	43
FIP-3 001-362/001-364/001-365/001-366 Restart Printer	44
FIP-4 003-340/003-341/003-342/003-344/003-345/003-346/003-347/003-348/003-349/ 003-350/003-351 Re...	45
FIP-5 003-343 Restart Printer	46
FIP-6 003-356 Restart Printer	48
FIP-7 004-310 Restart Printer	51
FIP-8 006-370/006-371/006-372/006-373/006-374/006-375/006-376/006-377/006-378/ 006-379/006-380/00...	52
FIP-9 007-342/007-345/007-346/007-348 Restart Printer	53
FIP-10 007-343/007-345/007-347/007-348 Restart Printer	54
FIP-11 007-344/007-346/007-347/007-348 Restart Printer	55
FIP-12 009-340/009-341 Restart Printer	56
FIP-13 009-360/009-361/009-362/009-363 Restart Printer	57
FIP-14 010-354 Restart Printer	58
FIP-15 010-378/010-379/010-380/010-381/010-382/010-383/010-384/010-385/010-386/ 010-387/010-388/0...	59
FIP-16 016-300/016-301/016-302/016-310/016-311/016-313/016-315/016-317/016-323/ 016-324/016-327/0...	60
FIP-17 016-312 Restart Printer	61
FIP-18 016-316/016-318 Restart Printer	62
FIP-19 016-330/016-331/016-332/016-333/016-334/016-335/016-336/016-337 Restart Printer	63
FIP-20 016-338 Restart Printer	65
FIP-21 016-350 Restart Printer	66
FIP-22 016-360/016-361 Restart Printer	67
FIP-23 016-370 Restart Printer	68
FIP-24 Paper Jam 077-902	69
FIP-25 Paper Jam 077-900	70
FIP-26 Paper Jam 071-101	71
FIP-27 Paper Jam 077-907	77
FIP-28 Load Tray N 024-910/024-911/024-912/024-913/024-914	78
FIP-29 Exit Tray Full 024-920	79
FIP-30 Load MPF 024-969/Load Tray N 024-965/024-966/024-967/024-968/024-969	80
FIP-31 Tape On XXX Toner 093-919/093-920/093-921/093-922	83
FIP-32 Insert TonerCart 093-970	84
FIP-33 Insert TonerCart 093-971	85
FIP-34 Insert TonerCart 093-972	86
FIP-35 Insert TonerCart 093-973	87
FIP-36 Replace Toner 093-930	88
FIP-37 Replace Toner 093-931	89
FIP-38 Replace Toner 093-932	90
FIP-39 Replace Toner 093-933	91
FIP-40 Ready to Print 093-423	92
FIP-41 Ready to Print 093-424	93
FIP-42 Ready to Print 093-425	94
FIP-43 Ready to Print 093-426	95
FIP-44 Toner Type 093-980/093-981/093-982/093-983/CRUM ID 093-960/093-961/ 093-962/093-963	96
FIP-45 Insert Drum 091-972	98
FIP-46 Imaging Drum 091-935	99
FIP-47 Ready to Print 094-402	100
FIP-48 Imaging Drum 091-912/CRUM ID 093-965	101
FIP-49 Replace Fuser 010-351	102
FIP-50 Insert Fuser 010-317	103
FIP-51 Ready to Print 010-421	104
FIP-52 Fuser Type 010-358/CRUM ID 093-964	105
FIP-53 Transfer Roller 094-911	106
FIP-54 Ready to Print 094-422	107
FIP-55 BTR Not Detected 094-910	108
FIP-56 Load Tray N 077-912/077-913/077-914/Tray Detached 024-945/024-946/024-947/ 024-948/024-949	109
FIP-57 Close Front Door 077-300	110
FIP-58 CTD Sensor Dirty 092-310/Ready to Print 092-910	112
FIP-59 Out of Memory 016-700	114
FIP-60 Disk Full 016-980	115
FIP-61 PCL Request 016-720	117
FIP-62 Invalid Job 016-799	118
FIP-63 Ready to Print 193-700	119
FIP-64 Invalid ID 016-383/Range Chk Error 016-384/Header Error 016-385/ Check Sum Error 016-386/F...	120
FIP-65 MPC Error 016-388/MPC Detached 016-389/MPC Com. Failed 016-390	121
FIP-66 Invalid User 016-757/Disabled Func 016-758/Reached Limits 016-759	123
3.5 Image Quality Troubleshooting	124
P1 \	130
P2 \	133
P3 \	135
P4 \	136
P5 \	139
P6 \	142
P7 \	145
P8 \	147
P9 \	151
P10 \	156
P11 \	157
P12 \	158
P13 \	159
P14 \	160
P15 \	162
P16 \	164
3.6 Other FIP	167
FIP-No Power	167
FIP-Multiple Feed	168
4. Abnormal Noise Trouble	169
4.1 Entry Chart for Abnormal Noise Troubleshooting	169
4.2 Operation Mode Table	170
FIP-1.N1 When Power is Turned On	170
FIP-1.N2 During Standby	171
FIP-1.N3 During Printing	172
Dell 5110cn Service Manual - Chapter 2 Operation of Diagnostics	177
Contents	177
1. Overview	179
1.1 Position of the Diag. in the Whole System	179
2. Configuration	180
3. How to use Diag. Customer Mode	181
3.1 Roles of the control panel in Diag.	181
3.2 Entering diag. Customer mode	182
3.3 Selecting Diag. item	182
3.4 Change method parameters value	182
3.5 Executing/Exiting Diag. mode	182
3.6 Diag. mode menu tree	183
4. The Kind of Diag. and Contents of a Test	185
4.1 Details of ESS diagnosis	189
4.1.1 Executing ESS diagnosis	189
4.1.2 All Test	189
4.1.3 CodeROM Test	189
4.1.4 FontROM Test	189
4.1.5 EEPROM Test	190
4.1.6 DRAM Test	190
4.1.7 MAC+PHY Test	191
4.1.8 ASIC Test	191
4.1.9 PANEL Test	191
4.1.10 IOT Test	191
4.1.11 HD Test	191
4.2 IOT Diag.	192
4.2.1 Digital Input (DI) Test	192
4.2.2 Executing digital input (DI) test	192
4.2.3 Exiting digital input (DI) test	194
4.2.4 How to check sensors and switches	194
4.2.5 Digital Output (DO) Test	212
4.2.6 Executing digital output (DO) test	212
4.2.7 Exiting digital output (DO) test	216
4.2.8 How to check the motors, clutches and solenoids	216
4.3 Test Print	239
4.3.1 Executing test print	239
4.3.2 No Image [IOT]	239
4.3.3 Test Pattern 600[IOT]	239
4.3.4 Grid2	240
4.3.5 20％ Density Chart	240
4.3.6 Gradation	242
4.3.7 Toner Pallet Check	242
4.3.8 Contamination Check	243
4.4 Parameter Setting	244
4.4.1 Handling parameters	244
4.4.2 Printing the parameter list	246
Dell 5110cn Service Manual - Chapter 3 Removal and Replacement Procedures (RRPs)	247
Contents	247
1. Removal and Replacement Procedures (RRPs)	251
1.1 Before starting service work	251
1.2 Description of procedure	254
2. Removal and Replacement Flows	256
RRP1. COVER	264
RRP1.1 TOP COVER FRAME (PL1.1.4)	264
RRP1.2 OPERATOR PANEL (PL1.1.5)	266
RRP1.3 FRONT COVER (PL1.1.6)	268
RRP1.4 IMAGING DRUM COVER (PL1.1.8), IMAGING DRUM COVER HINGE PIN (PL1.1.21)	270
RRP1.5 COVER ASSY REAR (PL1.1.17)	272
RRP1.6 REAR FAN (PL1.1.19)	274
RRP1.7 RIGHT SIDE COVER (PL1.1.20)	276
RRP1.8 RIGHT FRONT COVER (PL1.1.22)	278
RRP1.9 MULTIPURPOSE FEEDER (MPF) TRAY (PL1.1.23)	280
RRP1.10 MULTIPURPOSE FEEDER (MPF) COVER (PL1.1.25)	282
RRP1.11 LEFT FRONT COVER (PL1.1.28)	284
RRP1.12 LEFT SIDE COVER (PL1.1.30)	286
RRP1.13 FAN LV (PL1.1.33)	288
RRP1.14 REAR COVER (PL1.1.18)	290
RRP2. PAPER CASSETTE	292
RRP2.1 SEPARATOR ROLLER. (PL2.1.13), SEPARATOR ROLLER CLUTCH (PL2.1.14)	292
RRP2.2 RETARD ASSY (PL2.1.12)	294
RRP3. PAPER FEEDER	296
RRP3.1 PAPER FEEDER CHUTE. (PL3.1.2)	296
RRP3.2 PAPER TRAY COVER (PL3.1.3)	298
RRP3.3 PAPER FEEDER (PL3.1.7)	300
RRP3.4 SWITCH ASSY SIZE (PL3.2.5)	304
RRP3.5 SWITCH (PL3.2.10)	306
RRP3.6 HARNESS ASSY OPFPLG (PL3.2.11)	308
RRP3.7 PAPER PICKUP ASSEMBLY (PL3.3.1)	310
RRP3.8 ROLL ASSY TURN (PL3.3.2)	312
RRP3.9 SENSOR PHOTO: NO PAPER (PL3.3.7)	314
RRP3.10 Blank Page	316
RRP3.11 SOLENOID FEED (PL3.3.11)	318
RRP3.12 Blank Page	320
RRP3.13 CHUTE UPPER (REFERENCE ONLY)	322
RRP3.14 PAPER FEED ROLLER (PL3.3.18)	324
RRP3.15 ACTUATOR NO PAPER (PL3.3.20)	326
RRP4. RETARD & REGI ASSY	328
RRP4.1 ACTUATOR REGI (PL4.1.1)	328
RRP4.2 REGISTRATION SENSOR (PL.4.1.3)	330
RRP4.3 REGISTRATION CHUTE ASSEMBLY (PL4.1.20)	332
RRP4.4 Blank Page	334
RRP4.5 MULTIPURPOSE FEEDER (MPF) SEPARATOR ASSEMBLY (PL4.1.13), MULTIPURPOSE FEEDER (MPF) SEPARAT...	336
RRP4.6 REGISTRATION ASSEMBLY (PL4.2.1)	338
RRP4.7 ROLL REGI METAL. (PL4.2.3)	340
RRP4.8 ROLL REGI RUBBER. (PL4.2.4)	342
RRP4.9 CLUTCH REGI. (PL4.2.7)	344
RRP4.10 CLUTCH TURN. (PL4.2.9)	346
RRP4.11 ROLL TURN MSI. (PL4.2.10)	348
RRP5. CHUTE ASSY IN & OUT	350
RRP5.1 FUSER. (PL5.1.1)	350
RRP5.2 TRANSFER ROLLER. (PL5.1.4)	352
RRP5.3 AUTOMATIC DENSITY CONTROL (ADC) SENSOR. (PL5.2.19)	354
RRP5.4 TONER FULL SENSOR (PL5.2.20)	356
RRP5.5 DRIVE ASSY FUSER (PL5.2.25)	358
RRP5.6 MULTIPURPOSE FEEDER (MPF) SOLENOID. (PL5.3.9)	362
RRP5.7 MULTIPURPOSE FEEDER (MPF) PAPER SENSOR (PL5.3.14)	366
RRP5.8 MULTIPURPOSE FEEDER (MPF) ACTUATOR (PL.5.3.15)	368
RRP5.9 MULTIPURPOSE FEEDER (MPF) ROLLER (PL.5.3.20)	370
RRP5.10 OUTPUT TRAY FULL SENSOR (PL5.4.1)	374
RRP5.11 SENSOR PHOTO: JAM (PL5.4.1)	376
RRP5.12 OUTPUT TRAY ACTUATOR (PL5.4.2)	380
RRP5.13 DUPLEX DRIVE MOTOR (PL5.4.5)	382
RRP5.14 ACTUATOR DUP (PL5.4.13)	384
RRP5.15 ROLL DUP (PL5.4.15)	386
RRP5.16 ROLL EXIT (PL5.4.16)	388
RRP5.17 INNER DUPLEX ASSEMBLY (PL5.2.1), DUPLEX HINGE LINK SPRING (PL5.1.6), DUPULEX HINGE LINK (...	390
RRP5.18 OUTER DUPLEX ASSEMBLY (PL5.3.1), DUPLEX RETAINING STRAP (PL5.1.5)	394
RRP5.19 FAN FRONT (PL5.3.31)	398
RRP6. XEROGRAPHICS	400
RRP6.1 PRINT HEAD (PL6.1.2)	400
RRP6.2 HSG ASSY BIAS (PL6.1.7)	402
RRP7. DEVELOPMENT	404
RRP7.1 DEVELOPER FRAME (PL7.1.1)	404
RRP7.2 CRUM (PL7.1.4)	406
RRP7.3 DEVELOPER ASSEMBLY (Y), (M), (C), (K) (PL7.1.17~20)	408
RRP7.4 TONER DISPENSER ASSEMBLY (PL7.2.22)	410
RRP7.5 DISPENSER ASSY (Y) (PL7.2.1)	414
RRP7.6 DISPENSER ASSY (M) (PL7.2.2)	416
RRP7.7 DISPENSER ASSY (C) (PL7.2.3)	418
RRP7.8 DISPENSER ASSY (K) (PL7.2.4)	420
RRP7.9 SENSOR NO TONER (Y), (M), (C) (PL7.2.5)	422
RRP7.10 SENSOR NO TONER (K) (PL7.2.5)	424
RRP7.11 ACTUATOR SENSOR 2 (PL7.2.7)	426
RRP7.12 TONER CARTRIDGE SENSOR (PL7.2.12)	428
RRP7.13 DUCT LV (PL7.2.23)	430
RRP8. DRIVE	432
RRP8.1 DEVELOPER DRIVE ASSEMBLY (PL8.1.1)	432
RRP8.2 MAIN DRIVE ASSEMBLY (PL8.1.2)	436
RRP9. ELECTRICAL	438
RRP9.1 CONTROLLER CARD (PL9.1.3)	438
RRP9.2 LVPS ASSY (REFERENCE ONLY)	442
RRP9.3 LOW VOLTAGE POWER SUPPLY (LVPS) (PL9.1.6)	444
RRP9.4 HARNESS ASSY AC INLET (PL9.1.7)	446
RRP9.5 HARNESS ASSY INTERLOCK (PL9.1.11)	448
RRP9.6 PWBA EEPROM STD (PL9.1.12)	450
RRP9.7 MACHINE CONTROL UNIT (MCU) (PL9.1.16)	452
RRP9.8 SENSOR HUM (PL9.1.20)	458
RRP9.9 HIGH VOLTAGE POWER SUPPLY (HVPS) (PL9.1.21)	460
RRP9.10 OPTION HDD ASSY (PL9.1.25)	462
RRP9.11 OPTION MULTI PROTOCOL (PL9.1.26)	464
Dell 5110cn Service Manual - Chapter 4 Plug/Jack (P/J) Connector Locations	466
Contents	466
1. Connector [P (plug) / J (jack)]	468
1.1 List of P/J	468
1.2 IOT P/J layout diagram	470
Dell 5110cn Service Manual - Chapter 5 Parts List	474
Contents	474
1. Parts List	476
1.1 Caution for use of parts list	476
1.2 Caution for use of engineering parts list	476
Spare parts illustration	477
Engineering parts list	483
PL1.1 Cover [Illustration]	483
PL1.1 Cover [List]	484
PL2.1 Paper Cassette [Illustration]	485
PL2.1 Paper Cassette [List]	486
PL3.1 Paper Feeder (1/3) [Illustration]	487
PL3.1 Paper Feeder (1/3) [List]	488
PL3.2 Paper Feeder (2/3) [Illustration]	489
PL3.2 Paper Feeder (2/3) [List]	490
PL3.3 Paper Feeder (3/3) [Illustration]	491
PL3.3 Paper Feeder (3/3) [List]	492
PL4.1 Retard & Regi assy (1/2) [Illustration]	493
PL4.1 Retard & Regi assy (1/2) [List]	494
PL4.2 Retard & Regi assy (2/2) [Illustration]	495
PL4.2 Retard & Regi assy (2/2) [List]	496
PL5.1 Chute Assy In & Out (1/4) [Illustration]	497
PL5.1 Chute Assy In & Out (1/4) [List]	498
PL5.2 Chute Assy In & Out (2/4) [Illustration]	499
PL5.2 Chute Assy In & Out (2/4) [List]	500
PL5.3 Chute Assy In & Out (3/4) [Illustration]	501
PL5.3 Chute Assy In & Out (3/4) [List]	502
PL5.4 Chute Assy In & Out (4/4) [Illustration]	503
PL5.4 Chute Assy In & Out (4/4) [List]	504
PL6.1 Xerographics [Illustration]	505
PL6.1 Xerographics [List]	506
PL7.1 Development (1/2) [Illustration]	507
PL7.1 Development (1/2) [List]	508
PL7.2 Development (2/2) [Illustration]	509
PL7.2 Development (2/2) [List]	510
PL8.1 Drive [Illustration]	511
PL8.1 Drive [List]	512
PL9.1 Electrical [Illustration]	513
PL9.1 Electrical [List]	514
PL10.1 Harness [Illustration]	515
PL10.1 Harness [List]	516
Dell 5110cn Service Manual - Chapter 6 Principles of Operation	518
Contents	518
1. Printing Process	520
1.1 Summary of Printing Process	520
1.2 Schematic Diagram for Printing Processes	521
1.3 Description of Printing Process Techniques	522
1.3.1 Charging with electricity	522
1.3.2 Exposure	523
1.3.3 Development	525
1.3.4 Trickle	527
1.3.5 Primary transfer (drum -> IDT 1)	529
1.3.6 Secondary transfer (IDT 1 -> IDT 2)	531
1.3.7 Cleaning (IDT 1)	531
1.3.8 Tertiary transfer (IDT 2 - paper)	533
1.3.9 Cleaning (IDT 2)	533
1.3.10 Static elimination	533
1.3.11 Fixing	534
1.3.12 Cleaning (general)	535
2. Paper Transfer	537
2.1 Paper Transfer Route (without option)	537
2.2 Layout of Paper Transfer Route	538
3. Functions of Major Functional Components	539
3.1 Paper Cassette	539
3.1.1 Major functions	539
3.1.2 Reference diagram	540
3.1.3 Multiple sheet feed prevention	541
3.2 Paper Feeder	543
3.2.1 Major functions	543
3.2.2 Reference diagram	544
3.3 Separator & Registration Assembly	545
3.3.1 Major functions	545
3.3.2 Reference diagram	546
3.3.3 Multiple sheet feed prevention	547
3.3.4 Lead edge registration	548
3.4 Inner Duplex Assembly	549
3.4.1 Major functions	549
3.4.2 Reference diagram	550
3.5 Outer Duplex Assembly	551
3.5.1 Major functions	551
3.5.2 Reference diagram	552
3.6 Transfer Roller & Fuser	553
3.6.1 Major functions	553
3.6.2 Reference diagram	554
3.7 Xerographics	555
3.7.1 Major functions	555
3.7.2 Reference diagram	556
3.8 Toner Dispenser Assembly	557
3.8.1 Major functions	557
3.8.2 Reference diagram	558
3.9 Frame & Drive	559
3.9.1 Major functions	559
3.9.2 Reference diagram	560
3.10 Electrical	561
3.10.1 Major functions	561
3.10.2 Reference diagram	562
3.10.3 Data Flow	563
4. MODES	564
4.1 Print Mode	564
4.2 Operation Modes	564
5. Control	565
5.1 Control of Paper Size	565
5.2 Selective Control on Paper Cassette	565
5.3 PRINT HEAD Light Quantity Control	565
5.4 Process Control	566
5.4.1 Potential Control	566
5.4.2 Toner Density Control	567
5.4.3 High Area Coverage Mode	568
5.4.4 Admix Mode	568
5.4.5 LED Light Quantity Control of AUTOMATIC DENSITY CONTROL SENSOR	568
5.5 Color Registration Control	569
5.6 Transfer Roller Control	570
5.6.1 Detecting the Installation of Transfer Roller	570
5.6.2 Detecting the Life of Transfer Roller	570
5.7 Toner Control	571
5.7.1 SENSOR NO TONER	571
5.7.2 Toner presence control	571
5.8 Fuser Control	572
5.8.1 Fuser temperature control	572
5.8.2 Cool down	572
5.8.3 Sensor Warm-up	572
6. Drive Transmission Route and Gear Layout	573
6.1 MAIN DRIVE ASSEMBLY	573
6.2 DEVELOPER DRIVE ASSEMBLY	575
6.3 TONER DISPENSER ASSEMBLY (Y, M, C, K)	577
6.4 DRIVE ASSY FUSER	578
6.5 MOTOR ASSY DUP	579
Dell 5110cn Service Manual - Chapter 7 Wiring Diagrams and Signal Information	580
Contents	580
1. General Wiring Diagram	582
2. Wiring Diagram between Parts	584
2.1 Configuration	584
2.2 Notes on Using the Wiring Diagram between Parts	586
§ 1 Power supply section	589
§ 2 Cassette section	591
§ 3 Drive section	593
§ 4 Developer section 1	595
§ 5 Developer section 2	597
§ 6 Fuser section	599
§ 7 ROS section	601
§ 8 Xerographics 1	603
§ 9 Xerographics 2	605
§ 10 Paper feed section	607
§ 11 Controller section	609
Dell 5110cn Service Manual - Chapter 8 Printer Specifications	611
Contents	611
1. Configuration of Printer	613
1.1 Basic Configuration	613
1.2 Functional Configuration	613
2. Electrical Properties	614
2.1 Power Source	614
2.2 Power Consumption	614
3. Mechanical Properties	615
3.1 Dimensions/Mass of Printer	615
3.2 Dimensions/Mass of Universal Paper Tray (standard paper supply - 500 sheets)	615
3.3 Dimensions/Mass of Consumables (CRU)	616
3.3.1 Print head (PHD) cartridge	616
3.3.2 Transfer roll (BTR) cartridge	616
3.3.3 Black toner cartridge	616
3.3.4 Yellow toner cartridge	616
3.3.5 Magenta toner cartridge	616
3.3.6 Cyan toner cartridge	617
3.3.7 Black toner high yield cartridge	617
3.3.8 Yellow toner high yield cartridge	617
3.3.9 Magenta toner high yield cartridge	617
3.3.10 Cyan toner high yield cartridge	617
3.4 Installation Space (min. installation space)	618
4. Functions	619
4.1 Recording System	619
4.2 Exposure System	619
4.3 Development System	619
4.4 Fixing System	619
4.5 Resolution	619
4.6 Operation Mode	619
4.7 Process Speed	620
4.8 Print Mode	620
4.9 Paper Mode	621
4.10 Warm-up Time	621
4.11 FPOT (First Print Output Time)	622
4.12 Continuous Printing Speed	623
4.13 Printing Area	624
4.13.1 Usable paper size	624
4.13.2 Maximum printable area	624
4.13.3 Guaranteed printing area	624
4.14 Input Properties	625
4.14.1 Paper pick-up system	625
4.14.2 Paper pick-up capacity	625
4.15 Output Properties	626
4.15.1 Paper delivery system	626
4.15.2 Paper delivery capacity	626
4.15.3 Delivery paper size/mass	626
4.15.4 Full stack detection	626
4.16 Paper	627
4.16.1 Paper type	627
4.16.2 Paper mass	627
4.16.3 Paper size	627
5. Consumables	628
5.1 Items of Consumables	628
5.2 Consumable Life	628
6. Operating Environment	629
6.1 Installation Temperature / Humidity	629
6.2 Installation Altitude	629
6.3 Installation Horizontality	629
6.4 Ambient Lighting	629
7. Safety / Environment Conditions	630
7.1 Safety Standard	630
7.2 Laser Safety Standard	630
7.3 EMI	630
7.4 Noise	630
8. Print image Quality	631
8.1 Image Quality Guarantee Conditions	631
8.1.1 Environmental conditions	631
8.1.2 Guaranteed paper	631
8.1.3 Paper condition	631
8.1.4 Printer condition	631
8.1.5 Image quality guaranteed area	631
8.1.6 Criterion	631
8.1.7 Print mode and resolution	631

Match case Limit results 1 per page

Chapter 6

Principles of Operation

6 – 22

3.1.3

Multiple sheet feed prevention

The sheets set in a tray or a cassette may be stuck together at the edge due to microscope curl-up

along the cutting plane caused by the guillotine, etc.

The stuck sheets cause a multiple sheet feed or a

jam.

The mechanism for separating these stuck sheets is called "ARRF (Active Retard Roll Feeder)

method".

The sheets are carried by the Paper Feed Roller to the position between the Paper Feed Roller and the

Separator Roller. The Separator Roller is being pushed toward the Paper Feed Roller by a spring

tension.

When two sheets are carried concurrently, the top sheet is separated from the bottom sheet by the

friction between the Separator Roller allowing only the top sheet to be fed.

When only one sheet is carried, two kinds of friction are concurrently generated between the Paper

Feed Roller and the sheet (carrying force), and between the Separator Roller and the sheet (retaining

force). However, the friction by the Separator Roller is released because the Separator Roller turns free

by the torque limiter (CLUTCH ASSY FRICTION) provided on its shaft.

The release of the Retard Roll friction allows the sheet to be fed by the Paper Feed Roller.

Ten06007KA

PAPER FEED ROLLER (Feed Roll)

PAPER FEED ROLLER (Takeaway Roll)

SEPARATOR ROLLER

SEPARATOR ROLLER CLUTCH