Watkiss Automation Automatic SpineMaster, Руководство по обслуживанию

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Quality RAPS
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Thin Booklet RAP
Watkiss Automatic SpineMaster Service Manual - Edited 17/06/04
3 - 3
3.2 Thin Booklet RAP
The specified booklet thickness for the ASM is a minimum of 1mm (0.04”)
and a maximum of 6.5mm (0.25”). This is approximately 30 sheets of 80gsm
(20# bond) folded into a 120 page booklet.
When operating with thin booklets always question whether the use of Square-
Backing is of any benefit to the finished product. Thin booklets are flexible
and have a tendency to curl upwards at the spine, (the larger the booklet height
and width, the worse the problem). Occasionally they can ‘collapse’ on the
Clamp Stop, forcing the spine between the edge of the Stop and the Anvil
Clamp.
Remedial Action
If the customer reports this problem, ascertain whether the booklets are within
the machine specifications. If not, it is recommended that they are not square-
backed.
If within specifications, turn the booklet so that the ‘curl’ faces the Bolster
Clamp rather than the Anvil Clamp – it is not possible for the booklet to drop
below the edge of the Stop on this side. However, when running online with a
digital printer, this would mean inserting the booklets by hand after they have
been made.
Set the ‘Book Thickness Adjustment’ control to the lowest setting. This con-
trol alters the height of the Stop (the higher the setting the lower the Stop,
opening more of a gap between the Stop and the Anvil). If the problem persists
on minimum setting, adjust the Stop (see 4.7.7).
If the Stop oscillates excessively, there is a risk that the following booklet may
fall down between the edge of the Stop and the Anvil. To prevent this adjust
the Stop damping (see 4.7.8).