BP-900KII User's Manual
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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 tractor hole
D
4.0 ± 0.1
It is the hole with tractor edge, its minimal
diameter is the D value and its maximal
diameter is 4.5mm.
When using the multi-ply paper with tractor
holes, it is allowed that the diameter of the
tractor hole is bigger than 4.1mm.
Distance between tractor
hole centers
B
12.70 ± 0.05
Distance between nearby tractor hole centers in
the same side.
Accumulative error of
distance between tractor
hole centers
–
Below ± 0.3
The accumulative error along the central line of
any two tractor holes which are 254mm apart.
Warp of tractor hole
center
C Below
0.1
The maximal warp of the tractor hole center in
the same side.
Central warp of right and
left tractor holes.
E Below
0.15
The warp value of the beeline which
perpendiculars to central line through any
tractor hole in the left and the center of
B
Central line
Central line
Transverse perforation
Vertical perforation
Vertical perforation
Transverse perforation
90°
C
C
Edge Edge
A
D
E
A
Figure of continuous paper specification and tractor hole
