User's Manual

GSX-190II User's Manual
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◆ The position and size of gear hole
The gear hole of tractor paper should accord with the specification.
The positions and sizes of gear hole are shown below. The central line here refers to the line
between any two gear hole centers which in the distance of 254mm in either side of the paper.
Item Mark Size (mm) Function
Position of Central line A 6.0 ± 0.7
The distance from central line to the nearer
edge. The standard distance is 6.35mm.
Diameter of gear hole D 4.0 ± 0.1
It is the hole with gear edge, its minimal diameter
is the D value and its maximal diameter is
4.5mm.
When using the multi-ply paper with gear holes,
it is allowed that the diameter of the gear hole is
bigger than 4.1mm.
Distance between gear
hole centers
B 12.70 ± 0.05
Distance between nearby gear hole centers in
the same side.
Accumulative error of
distance between gear
hole centers
– Below ± 0.3
The accumulative error along the central line of
any two gear holes which are 254mm apart.
B
Central line
Central line
Transverse perforation
Vertical perforation Vertical perforation
Transverse perforation
90°
C
C
Edge Edge
A
D
E
A
Figure of tractor paper specification and gear hole