Brother HL-1850 User Manual

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APPENDIX 
 
 
A–9 
 
♦     Acid Paper and Neutralized Paper 
 
Paper can be classified as either acid paper or neutralized paper.  
Modern methods for making paper started with acid paper, but neutralized 
paper is taking the place of acid paper because of environmental or 
preservation issues.  
However, many forms of acid paper can be found in recycled paper. We 
recommend that you use neutralized paper for this printer. 
You can use an acid paper check pen to distinguish acid paper from neutral 
paper. 
 
 
♦     Print Surface 
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 
paper side is indicated with an arrow. 
 
 
♦     Moisture Content 
Moisture content is the amount of water left in the paper after it has been 
made. It is one of the important characteristics of the paper.  This can 
change greatly depending on where the paper is stored, although usually 
paper is 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 
storing of the paper and during use, we recommend that the humidity of the 
surrounding environment is between 50% and 60%.