Paper Creases or Curls

Paper Creases

Is paper loaded correctly?

If paper is not loaded below the load limit line or is loaded obliquely, it may crease.
Loading Paper

Are you using paper that has absorbed moisture?

Replace with appropriate paper.
Loading Paper

Are you using appropriate paper?

Check usable paper, and replace with appropriate paper.
Available Paper
Loading Paper

Does this problem occur when printing on plain paper or thin paper? (MF735Cx)

Change the setting of <Paper Wrinkle Correction>. The improvement effect is stronger with <Mode 2> than <Mode 1>. First try with <Mode 1>.
<Paper Wrinkle Correction>

Setting a greater improvement effect may result in faded printouts or slower printing speed.

Does this problem occur when printing on envelopes or thin paper? (MF635Cx / MF633Cdw / MF631Cn)

Change the setting of <Paper Wrinkle Correction>. <Mode 1> is effective for envelopes. <Mode 2> provides stronger improvement, and is effective for envelopes and thin paper. First try with <Mode 1>.
<Paper Wrinkle Correction>

When <Mode 1> or <Mode 2> is specified, printed images may be blurry.

Paper Curls

Are you using appropriate paper?

Check usable paper, and replace with appropriate paper. Also, specify the paper size and type settings properly.
Available Paper
Loading Paper
Specifying Paper Size and Type

Change the setting of <Paper Curl Correction>. The improvement effect is stronger with <Mode 2> than <Mode 1>. First try with <Mode 1>.
<Paper Curl Correction>

Setting a greater improvement effect may result in faded printouts or slower printing speed.

Reload the paper by changing the side to print on (front side/back side).

In rare cases the symptom may become worse depending on the paper. If this occurs, change the side to print on back to the previous side.

Are you using paper that has absorbed moisture?

Replace with appropriate paper.
Loading Paper

Change the setting of <Paper Type> to a setting for thinner paper. For example, if the current setting is <Plain 1>, change it to <Plain L>.
Specifying Paper Size and Type
Available Paper

Change the setting of <Paper Curl Correction>. The improvement effect is stronger with <Mode 2> than <Mode 1>. First try with <Mode 1>.
<Paper Curl Correction>

Setting a greater improvement effect may result in faded printouts or slower printing speed.

Are you using the machine in an environment with high humidity? (MF735Cx)

Setting <Reduce Toner Fixing Stain 2> to <Mode 1> may solve the problem.
<Reduce Toner Fixing Stain 2>

If you set to <Mode 1>, printouts may be faded.