Appendix
78
A
Print surface
A
The characteristics may differ a little between the face side and reverse side of a sheet of paper.
Usually, the opening side of the ream of paper package is the print side. Follow any indication of the print side
on the paper package. Typically, the print side is indicated by an arrow.
Moisture content
A
Moisture content is the amount of water left in the paper after manufacture. It is one of the important
characteristics of the paper. This can change greatly depending on the storage environment, although usually
paper contains about 5% water by weight. Because paper often absorbs water, the amount of water can
sometimes be about 10% in a high humidity environment. When the amount of water increases, the
characteristic of the paper changes greatly. The fixing of the toner may become worse. For storage of the
paper and during use, we recommend that the humidity of the surrounding environment is between 50% and
60%.
