A - 7 APPENDIX
Moisture content
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%.
Rough estimate of basis weight
Paper size
g/m2 lb
Bond Index
60 16
64 17
75 20
90 24
105 28
120 32
135 36
161 43 90
20053110
Letter 8.5 × 11 in.
Legal 8.5 × 14 in.
Executive 7.25 × 10.5 in.
A4 210 × 297 mm
A5 148 × 210 mm
A6 105 × 148 mm
B5 (ISO) 201 × 276 mm
Envelope Monarch 3.875 × 7.5 in.
Envelope #9 3.875 × 8.9 in.
Envelope #10 4.12 × 9.5 in.
Envelope #11 4.5 × 10.375 in.
Envelope DL 110 × 220 mm
Envelope C5 162 × 229 mm
Envelope C6 114 × 162 mm
Envelope B5 176 × 250 mm
Envelope B6 176 × 125 mm
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