Chapter 7
7-7
7.1.6 Transfer Block
0013-8467
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR C3080i / iR
C2550
This block consists of 3 steps, in which the toner image is moved from the photosensitive drum surface to paper.
step 4: primary transfer
In this step, toner is moved from the photosensitive drum to the ITB.
A positive bias is applied to the primary transfer roller found on the inner side of the machine, thus charging the ITB to a positive potential. As a result, the negatively
charged toner on the surface of the photosensitive drum moves to the positively charged ITB. This whole process is performed for all colors (Y, M, C, Bk).
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step 5: secondary transfer
In this step, the toner on the ITB is moved to paper.
A positive bias is applied to the secondary transfer outside roller to charge the back of paper to a positive potential. As a result, the toner on the ITB moves to the
paper.
To prevent soiling of the back of paper, the secondary transfer outside roller is given a positive and then a negative bias in turns at the end of secondary transfer,
thus returning the residual toner on the secondary transfer outside roller to the ITB.
Thereafter, the residual toner returned to the ITB is collected to the waste toner case in the ITB cleaning block.
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step 6: separation
In this step, the rigidity of paper is used to separate paper from the ITB.
Thin paper has little body. The static eliminator decreases the charges on paper, thus weakening the static bonding and, consequently, facilitating separation.
photosensitive drum
DC bias
ITB
Primary transfer roller
Paper
DC bias
ITB
Secondary transfer inside roller
Secondary transfer outside roller
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 ...
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Page 715: ......
Page 746: ...Chapter 19 Service Tools ...
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Page 752: ...APPENDIX ...
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