1. Print head 1
  2. Print head 2
  3. Print head 3
  4. Nozzle D column
  5. Nozzle C column
  6. Nozzle B column
  7. Nozzle A column

Check the position of the print heads where discharge defects such as clogging nozzles in the nozzle check pattern have occurred. Check the print heads with discharge defects by referring to the following illustration.

Normal printing result

When there are discharge defects in the heads

  1. Nozzle clogging has occurred.
  2. The nozzle check pattern is wave-like.
  3. The nozzle check pattern is intermittent.
  4. The intervals in the nozzle check pattern are not equal. (Bending lines have occurred.)

Check the clogged nozzle number. The numbers on the left and right of the test pattern are used for determining which nozzle is clogged. For example, if nozzle clogging is in the location shown in the following illustration, count left from nozzle number 91 to determine that the clogged nozzle is on nozzle number "94".