White spots of 0.2–0.3 mm (0.008–0.01 inches) in diameter appear.

Cause:

This may occur if printed at low temperature or humidity.

  • To adjust the following settings, pre-register the type of paper in use as a custom paper. For details see “3. Custom Paper Settings for Administrator” in the TCRU “Adjustment Item Menu Guide”.
  • If you reduce the paper transfer current to eliminate white spots, copies may become too faint.

Solution:

Check both sides of the paper for the problem.

  • If the problem appears only on Side 1 do Procedure (a).
  • If the problem appears only on Side 2, do Procedure (b).
  • If the problem appears on both sides of the paper, do Procedure (a), and then do Procedure (b).

Procedure (a) White Spots on Side 1

  1. Adjust the setting for the side 1 of the paper. In Advanced Settings for the custom paper in use, decrease the absolute value of the negative current by 5% in Paper Transfer Current Setting: Side 1. (SP2-811-001 to 100: PTR Current:Side1 Custom Paper 001 to 100)
    Example: If the present current is -40 uA, change it to -38 uA.

  2. Print the image. Is the problem resolved?

    Yes

    Finished! If Side 2 was also affected do Procedure (b).

    No

    Lower the setting by 5%.

  3. Repeat Step 2. If this does not solve the problem, consult the product specialist.

Procedure (b) White Spots on Side 2

  1. Adjust the setting for the side 2 of the paper. In Advanced Settings for the custom paper in use, decrease the absolute value of the negative current by 5% in Paper Transfer Current Setting: Side 2. (SP2-812-001 to 100: PTR Current:Side2 Custom Paper 001 to 100
    Example: If the present current is -40 uA, change it to -38 uA.

  2. Print the image. Is the problem resolved?

    Yes

    Finished!

    No

    Lower the setting another 5%.

  3. If repeating Step 2 does not solve the problem, consult the product specialist.