Ricoh DDP70E-92, User Manual, Page: 126 / 150

C-2 Paper Specifications
Paper Specifications
Characteristics Recommendation
Paper Grade No. 1 or No. 4 Xerographic (Note 1)
Fiber Composition 100% chemical wood pulp
Color White or pastel color
Ash Content 18% maximum (Notes 2 and 4)
Filler
Kaolin or china clay (aluminosilicate) or calcium carbonate. Tita-
nium dioxide or magnesium silicate may be added to improve
brightness.
Grain Direction Parallel to the long dimension (grain long)
CaCO
3
Content 0% (Paper that contains CaCO
3
can drastically reduce fuser life.)
Cutting Method Rotary precision cut (Lennox, Will, or equivalent)
Cutting Tolerance
Length and width:
±
0.787 mm (
±
0.031 in.)
Squareness: all corners 90 ° ± 0 ° 6
′
Basis Weight 16 to 110 lb. (60 to 199 g/m
2
) (See Notes 3 and 4)
Caliper
16 to 19 lb. (60 to 72 g/m
2
): 3.5 to 5.0 mils (90 to 127 µ
m)
20 to 24 lb. (75 to 90 g/m
2
): 3.2 to 4.0 mils (81 to 102
µ
m)
Smoothness (Sheffield)
16 to 19 lb. (60 to 72 g/m
2
): 70 to 170 Sheffield units
20 to 24 lb. (75 to 90 g/m
2
): 100 to 200 Sheffield units
Porosity (Gurley) 10 sec./100 ml minimum
Coefficient of Static Friction 0.35 to 0.62 (Notes 3 and 5)
Surface Sizing Starch - Do not use synthetic surface sizing
Internal Sizing
Acid Rosin or synthetic
(alkylketene dimer or alkyl-succinic anhydride)
Stiffness (Taber)
16 to 19 lb. (60 to 72 g/m
2
): MD 1.4 min./CD: 0.5 min.
20 to 24 lb. (75 to 90 g/m
2
): MD 1.7 to 4.5 min./CD: 0.8 to 2.4
min.
Moisture Content 3.7% to 5.5% by weight (Notes 3 and 4)
Surface Resistivity 5 x 10
9
to 1 x 10
12
ohms (Notes 3 and 6)
NOTES
:
1. The No. 1 or No. 4 designation applies only in the U.S.
2. Testing method - Technical Association of the Pulp and Paper Industry (TAPPI).
3. Testing method - American Society for Testing and Materials (ASTM).
4. Testing method - International Organization for Standardization (ISO).
5. Use 127 mm/min (5.0 in./min.) pull rate.
6. Isolate the test specimen from the metal backing plate with a piece of smooth,
nonconductive polyester film, at least 0.254 mm (0.010 in.) thick; use 100 volts.