Ricoh DDP 70e - Manual (Page 126)

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.
Titanium 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 to72 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.