Plockmatic Morgana PowerSquare 160, Manual

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Quality Tolerances
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Plockmatic PowerSquare™ 160 - Service Training Workbook
15. Quality Tolerances
Book Quality
Tolerances
Sheet Alignment:
Sheet to sheet: up to 0.5mm
Within set: up to 1.0mm
Accuracy of stapling and folding:
Staple position: within 0.5mm of the centreline of the sheet,
measured on an un-trimmed book.
Formed spines: Centreline of staple within centre 50% of spine
width
Un-formed spines: On spine +/- 1mm
Squareness of folding:
From spine to trimmed edge: within 0.28°
Accuracy of trimming:
Within 1mm (a, b, c)
Staple form:
Low impact stapling with moving clinch produces flat staples.
Legs should lie flat so they cannot cause injury
Legs should not re-penetrate the spine
Spine forming:
The quality of the SquareBack spine is subjective and is operator adjustable. Its
purpose is to produce a book with a superior appearance to a non-formed spine.
The appearance of the spine will vary according to material and machine set-up.
Spine forming should not cut the paper nor cause excessive wrinkling. A witness
from clamp, spine forming and fold blade is visible. It should not encroach into
the book beyond the clamp line.
Production may vary according to operating conditions. In line with a policy of
continual product improvement, the manufacturer reserves the right to alter the
materials or specification of this product at any time without notice.
50%
x
°
sp
ine
op
en
edge
a
b
c
illustration
shows a book