Morgana DocuMaster MFC, Руководство по обслуживанию

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Morgana DocuMaster MFC - Service Manual 87
4. Service Procedures - Machine Adjustments and Calibration
4
4.5.18.2 Adjust the Crease Stretch
The crease stretch trim adjustment makes allowance for manufacturing tolerances
between different creaser modules. The stretch measurement is a known number of
motor steps that is approximately equal to
4 x circumference of the input rollers. The
stretch trim makes the crease position accurate on the sheet.
Note: The inner pair of edge-sensors are used by default when
the MFC Test program does the crease stretch check.
Figure 4.65 Measure the Crease Stretch Distance
•
A (-) offset value will reduce the crease stretch.
•
A (+) offset value will increase the crease stretch.
12 Adjust the outer pair skew offset
trim to make the crease parallel to
the lead-edge of the sheet. Do Steps 5 thru 8.
13 Do a check to see if the crease
stretch trim is correct. (See Section 4.5.18.2).
Step Action Information
Step Action Information
1 Do a skew offset check (if you did
not do it before this.). (See Section 4.5.18.1)
2 Feed a single sheet of test stock
through the MFC. •
Remove the sheet from the
gathering area.
3 Do a check to see if the stretch
crease trim is correct.
•
Put the sheet on a flat surface.
•
Do a check to see if the distance
between the first crease and the
stretch crease is 320mm (see
Figure 4.65).
4 Adjust the stretch crease trim to
make the distance between the
first crease and the stretch crease
measure 320mm. Set a stretch trim value
in the setting box.