Paper Curl; How To Avoid Paper Curl - Ricoh DDP184 User Manual

Paper Curl

Paper curl is a very significant factor in printer performance. It can affect the printer in
the following ways:
Paper jam, paper skew and ability to be picked up
Paper stacking uniformly in the output stacker
Paper wrinkles through the heat roller (fuser).
Nearly all paper has curl or a tendency to curl. Curl can occur after the paper passes
through the printer's fuser where it is exposed to high temperatures. In most paper, curl
results from unusually large, sudden, or uneven changes in the moisture content.
Acceptable paper curl is less than 10 mm.
How to measure paper curl:
1. Print simplex, face down, less than 5% print density.
2. Place paper, curl side up, on a flat surface.
3. Measure from the table to the top of the curl as shown below.
:
NOTE
Measurement must be performed with 2 minutes of printing.

How to Avoid Paper Curl

Use high-quality xerographic paper.
Store the paper in a moderate environment (40% to 60% relative humidity).
Minimize humidity changes throughout the day in the printer room.
Minimize the humidity difference between the paper storage area and the printer
room. If the humidity difference is considerable, move the paper into the printer
room a few days before to allow the paper to adjust to the printer room
environment.
Wrap the unused paper properly in moisture-resistant wrappers to protect the
paper from moisture absorption or loss.
C-6 Paper Specifications
OG L 0 0
Acceptable Paper Curl
Less than 10 mm