3 fine adjustment of perforating line – MBM Corporation 307A (PERF & SCORING UNIT) User Manual
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3.3 Fine Adjustment of Perforating Line
CAUTION: 
Before making any adjustment, make 
sure that the paper is tightly placed 
without play between the Paper Guides 
in the Paper Feed Tray of Folder. 
Otherwise, right angle of perforation is 
not available in any event. 
3.3.1 Adjusting line location
3.3.2 Adjustment of perforating angle
– If the line is extremely out of desired location,
Perforating Unit must be relocated.
- If the line is away for approximately 5mm or
less from desired position, fine adjustment 
may be possible without changing Perforating 
Block set up. 
 NOTE: 
 Before fixing Perforating Block, make sure 
 to place Blade Position Reference to center 
 position so that fine adjustment may be 
 possible after the Block is fixed. 
Fine Adjustment Dial:
While squeezing release levers, turn Fine Adjustment Dial to direction (1) and
Perforation position moves to right.
When it is turned towards direction (2), Perforator position moves to left.
In case perforation is not performed in the 
right angle, adjustment of angle may be 
possible. 
 
- In case finishing of perforation is angled 
to right A, turn Slant Adjustment Dial to 
the direction of 1. 
- In case finishing of perforation is angled
to left B, turn Slant Adjustment Dial to 
the direction of 2. 
Angled to right
Angled to left
Paper
direction
1
2
Slant Adjust Dial
Indicator
A
B
Thumb Screw
Blade Position 
Reference 
Release Lever
1
2
Fine Adjustment Dial
Slant Adjust Dial
