8R1U-012
Paper or Envelope is Wrinkled
Paper or envelope tends to wrinkle because the printer is installed in a hot or humid environment or the paper or envelope used is thin. Check the solutions below.
Envelope
← Feeding Direction
Thin paper
← Feeding Direction
Remedy
Locate the machine in a room that has consistent and suitable temperature and humidity. Keep the paper in the same environment as that where the machine is located. For the appropriate temperature and humidity, see other guides such as the User's Guide.
To improve this situation, adjust the value for <Adjust Gloss> to match the specific characteristics of the paper.
Press 
→ <Preferences> → <Paper Settings> → <Paper Type Management Settings> → select the type of paper you are using that is having this problem → press <Details/Edit> → <Change> for <Adjust Gloss> → adjust the value toward the minus end.
→ <Preferences> → <Paper Settings> → <Paper Type Management Settings> → select the type of paper you are using that is having this problem → press <Details/Edit> → <Change> for <Adjust Gloss> → adjust the value toward the minus end.
"Managing the Machine" > "Paper Type Management Settings" in the User's Guide > see the subsection "Adjust Gloss"To improve this situation, adjust the value for <Adjust Temp. to Prevent Wrinkles> to match the specific characteristics of the paper.
Press → <Preferences> → <Paper Settings> → <Paper Type Management Settings> → select the type of paper you are using that is having this problem → press <Details/Edit> → <Change> for <Adjust Temp. to Prevent Wrinkles> to adjust the value toward the plus end.
→ <Preferences> → <Paper Settings> → <Paper Type Management Settings> → select the type of paper you are using that is having this problem → press <Details/Edit> → <Change> for <Adjust Temp. to Prevent Wrinkles> to adjust the value toward the plus end. "Managing the Machine" > "Paper Type Management Settings" > "Changing the Wrinkle Correction Level" in the User's Guide