Chapter 8
8-32
F-8-26
PS2: Arch sensor
PS16: Arch sensor 2
M3: Fixing motor
3. Control Sequence
The sequence of arch control is shown as below.
a. Starting arch monitoring
Start arch monitoring from the point where the leading edge of paper enters fixing (the point of reaching the fixing nip).
b. Detection of the arch level
Two arch sensors detect the arch level.
- Arch sensor 2 (PS16): Detects large arch (sagging)
- Arch sensor (PS2): Detects small arch (sagging)
F-8-27
Reference:
This machine has two different sensors to detect large and small arch respectively to prevent noise and faulty image.
If there is large arch when a paper passes through the secondary transfer roller, the paper with large arch will straighten and noise occurs. If a paper hits somewhere,
faulty image (including soiled paper edge, etc) may occur.
To prevent this symptom, make the arch level of a paper smaller before passing through the secondary transfer roller so that the paper passes through the secondary
transfer roller without a large arch.
c. Speed control for the fixing motor (M3)
Control the fixing motor (M3) according to ON / OFF of the arch sensor (PS2) and the arch sensor 2 (PS16) to change the feeding speed.
In the former part of the control, keep the arch level large while the arch sensor 2 (PS16) detects large arch. In the latter part, keep the arch level small while the
arch sensor (PS2) detects small arch.
In both sensors, increase the fixing feeding speed when the sensor is ON (the arch level becomes larger). Decrease the fixing feeding speed when the sensor is OFF
(the arch level is smaller). This control keeps the arch level optimum.
For heavy paper and OHT, the arch sensor (PS2) usually controls only small arch.
There is no arch control for envelope.
DC Driver
DCON
PS16
PS2
M3
FUSE_M_XA
FUSE_M_A
FUSE_M_B
FUSE_M_XB
LOOP_SNS
LOOP2_SNS
PS16
Detection of large arch
Detection of small arch
PS2
Summary of Contents for CiRC2550
Page 2: ......
Page 27: ...Chapter 1 Introduction ...
Page 28: ......
Page 47: ...Chapter 1 1 18 F 1 14 ON OFF ON OFF ...
Page 70: ...Chapter 1 1 41 5 Turn on the main power switch ...
Page 79: ...Chapter 2 Installation ...
Page 80: ......
Page 85: ...Chapter 2 2 3 Not available in some regions ...
Page 134: ...Chapter 3 Basic Operation ...
Page 135: ......
Page 137: ......
Page 143: ...Chapter 4 Main Controller ...
Page 144: ......
Page 152: ...Chapter 4 4 6 F 4 6 CPU HDD ROM access to the program at time of execution ...
Page 171: ...Chapter 5 Original Exposure System ...
Page 172: ......
Page 203: ...Chapter 6 Laser Exposure ...
Page 204: ......
Page 206: ......
Page 220: ...Chapter 7 Image Formation ...
Page 221: ......
Page 277: ...Chapter 8 Pickup Feeding System ...
Page 278: ......
Page 282: ......
Page 336: ...Chapter 9 Fixing System ...
Page 337: ......
Page 339: ......
Page 357: ...Chapter 10 Externals and Controls ...
Page 358: ......
Page 362: ......
Page 366: ...Chapter 10 10 4 F 10 2 F 10 3 FM1 FM2 FM5 FM8 FM11 FM4 FM3 FM6 FM7 FM9 FM10 ...
Page 375: ...Chapter 10 10 13 F 10 10 2 Remove the check mark from SNMP Status Enabled ...
Page 376: ...Chapter 10 10 14 F 10 11 ...
Page 402: ...Chapter 11 MEAP ...
Page 403: ......
Page 405: ......
Page 452: ...Chapter 12 RDS ...
Page 453: ......
Page 455: ......
Page 464: ...Chapter 13 Maintenance and Inspection ...
Page 465: ......
Page 467: ......
Page 469: ...Chapter 13 13 2 F 13 1 8 9 1 2 3 3 5 6 7 10 11 12 13 14 4 ...
Page 474: ...Chapter 14 Standards and Adjustments ...
Page 475: ......
Page 477: ......
Page 485: ......
Page 486: ...Chapter 15 Correcting Faulty Images ...
Page 487: ......
Page 495: ...Chapter 15 15 4 F 15 2 COLOR M 1 COLOR Y C K 0 ...
Page 569: ...Chapter 15 15 78 F 15 82 J102 J107 J103 J108 J101 J109 J106 J112 J115 J113 J114 J104 J105 ...
Page 570: ...Chapter 16 Self Diagnosis ...
Page 571: ......
Page 573: ......
Page 600: ...Chapter 17 Service Mode ...
Page 601: ......
Page 603: ......
Page 712: ...Chapter 18 Upgrading ...
Page 713: ......
Page 715: ......
Page 746: ...Chapter 19 Service Tools ...
Page 747: ......
Page 749: ......
Page 752: ...APPENDIX ...
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