Chapter 8
8-6
8.2.3 Skew Correction
0019-5030
imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
Before the paper fed from the cassette or manual feed tray is transported to the ETB unit, a skew is corrected.
1) The fed paper comes into contact with the registration shutter at the registration roller assembly.
The lead edge of the paper comes into contact with the registration shutter so that the right and left edges of the paper are aligned.
2) The paper is warped because the paper path is obstructed by the registration shutter.
Since the registration shutter is pressed by springs, the registration shutter does not move only with the power of the sheet trying to move ahead.
When the paper is warped, the stiffness of the paper is applied in addition to the power of trying to move ahead, which increases the power of lifting up the
registration shutter.
3) When the power exceeding a specified level is applied to the paper, the registration shutter is lifted up.
In this condition, the paper is transported while keeping the right and left edges being aligned, and the skew is corrected.
F-8-6
Registration shutter
Registration shutter
Paper
Paper
Paper feed direction
Summary of Contents for imageCLASS MF9170c
Page 16: ...Chapter 1 Introduction ...
Page 55: ...Chapter 2 Basic Operation ...
Page 61: ...Chapter 3 Main Controller ...
Page 75: ...Chapter 4 Original Exposure System ...
Page 88: ...Chapter 5 Original Feeding System ...
Page 105: ...Chapter 6 Laser Exposure ...
Page 113: ...Chapter 7 Image Formation ...
Page 150: ...Chapter 8 Pickup and Feed System ...
Page 184: ...Chapter 9 Fixing System ...
Page 200: ...Chapter 10 External and Controls ...
Page 230: ...Chapter 11 Maintenance and Inspection ...
Page 233: ...Chapter 12 Measurement and Adjustments ...
Page 237: ...Chapter 13 Correcting Faulty Images ...
Page 260: ...Chapter 14 Error Code ...
Page 272: ...Chapter 15 Special Management Mode ...
Page 280: ...Chapter 16 Service Mode ...
Page 322: ...Chapter 17 Upgrading ...
Page 327: ...Chapter 17 17 4 3 Click Next F 17 4 4 Select a USB connected device and click Next F 17 5 ...
Page 328: ...Chapter 17 17 5 5 Click Start F 17 6 6 Click Yes F 17 7 Download will be started F 17 8 ...
Page 330: ...Chapter 18 Service Tools ...
Page 334: ...Appendix ...
Page 349: ......