Olivetti PG L2435, Operation Manual, Page: 36 / 222

Paper Handling 2-5
Smoothness
The paper should have a smooth, uncoated surface. Paper with a rough
or sandy surface can cause blank spaces in the printed output. Paper
that is too smooth can cause multiple feeding and fogging problems.
(Fogging is a gray background effect.)
Basis Weight
Basis weight is the weight of paper expressed in grams per square meter
(g/m²). Paper that is too heavy or too light may cause feed errors or
paper jams as well as premature wear of the product. Uneven weight of
paper, namely uneven paper thickness may cause multiple-sheet
feeding or print quality problems such as blurring because of poor toner
fusing.
Paper Weight Equivalence Table
The paper weight is listed in pounds (lb) and metric grams per square
meter (g/m²). The shaded part indicates the standard weight.
Thickness
The paper used with the machine should be neither extremely thick nor
extremely thin. If you are having problems with paper jams, multiple
feeds, and faint printing, the paper you are using may be too thin. If you
are having problems with paper jams and blurred printing the paper may
be too thick.
U. S. Bond Weight (lb) Europe Metric Weight (g/m²)
16 60
17 64
20 75
21 80
22 81
24 90
27 100
28 105
32 120
34 128
36 135
39 148
42 157
43 163
47 176
53 199