Ink smear 2 (smear on back side)

Assumed cause
  • Feed belt surface dirt
  • Paper transport path dirt

Defect-related parts
  1. EJ Unit
    Ink smear in paper feed path
  2. Paper guides
    Ink smear in paper feed path
  3. Transport rollers
    Ink smear in paper feed path
  4. Head Unit
    Ink dripping due to head failure
  5. Wiper Assy
    Ink remaining due to poor wiping
  6. Belt Drawer Unit
    Ink adhesion to the Belt Drawer Unit surface
  7. Anti Static Brush
    The head surface is rubbed because the paper cannot be suppressed
  8. Registration Unit
    Head surface is rubbed against paper due to paper suction failure
Troubleshooting
Step Confirmation and action YES NO
1

Perform 10 blank sheets feeding

  • Has the image defect been improved?

Expecting a cleaning effect by passing blank paper

 End of work Go to step 2
2

Perform one blank sheet feeding after CL0.

  • Is the dirt worse than the 10th sheet of feed in step 1?

(identifying ink dripping from the head)

Go to step 6
(Caused by head)

Go to step 3
(Caused by route)
3

Clean the Belt Drawer Unit

  • Has the image defect been improved?
 End of work Go to step 4
4

Paper path cleaning
Clean the paper feed path, each feed rollers and each EJ rollers.

  • Has the image defect been improved?
 End of work Go to step 5
5

EJ unit replacement
Check the head nozzle surface for any foreign objects, such as a piece of paper left, and remove any foreign substances.

  • Has the image defect been improved?

(Remove directly from the EJ unit and check directly)

 End of work Replace the parts/components to be checked one by one.
6

Check the head nozzle surface
Check the head nozzle surface for any foreign objects, such as a piece of paper left, and remove any foreign substances.

  • Has the image defect been improved?

(Remove directly from the EJ unit and check directly)

 End of work Go to step 7
7

Replace the Head Unit

  • Has the image defect been improved?
 End of work Go to step 8
8

Replace the Wiper Assy

  • Has the image defect been improved?
 End of work

Replace the parts/components to be checked one by one.