Unacceptable Paper - Konica Minolta bizhub 4000P User Manual

Curl
Curl is the tendency for paper to curl at its edges. Excessive curl can cause paper feeding problems. Curl
can occur after the paper passes through the printer, where it is exposed to high temperatures. Storing
paper unwrapped in hot, humid, cold, or dry conditions, even in the trays, can contribute to paper curling
prior to printing and can cause feeding problems.
Smoothness
Paper smoothness directly affects print quality. If paper is too rough, toner cannot fuse to it properly. If
paper is too smooth, it can cause paper feeding or print quality issues. Always use paper between 100
and 300 Sheffield points; smoothness between 150–250 Sheffield points produces the best print quality.
Moisture content
The amount of moisture in paper affects both print quality and the ability of the printer to feed the paper
correctly. Leave paper in its original wrapper until it is time to use it. This limits the exposure of paper to
moisture changes that can degrade its performance.
Condition paper before printing by storing it in its original wrapper in the same environment as the printer
for 24–48 hours before printing. Extend the time to several days if the storage or transportation
environment is very different from the printer environment. Thick paper may also require a longer
conditioning period.
Grain direction
Grain refers to the alignment of the paper fibers in a sheet of paper. Grain is either grain long, running the
length of the paper, or grain short, running the width of the paper.
2
For 60–90-g/m (16–24-lb) bond paper, grain long paper is recommended.
Fiber content
Most high-quality xerographic paper is made from 100% chemically treated pulped wood. This content
provides the paper with a high degree of stability resulting in fewer paper feeding problems and better
print quality. Paper containing fibers such as cotton can negatively affect paper handling.

Unacceptable paper

The following paper types are not recommended for use with the printer:
• Chemically-treated papers used to make copies without carbon paper, also known as carbonless
papers, carbonless copy paper (CCP), or no carbon required (NCR) paper
• Preprinted papers with chemicals that may contaminate the printer
•
Preprinted papers that can be affected by the temperature in the printer fuser
User's Guide
- 72 -