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Determining grain direction, Determining grain direction -9 – Xerox 701P28020 User Manual

Page 19

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X e r o x N u v e r a P a p e r G u id e

1-9

S e l e c t i n g s t o c k f o r y o u r X e r o x N u v e r a S y s t e m

to the lead (left side) edge of the tray so it will bend easier as it
moves through the system. Load middleweight papers with the
grain in either direction. The weight ranges for the Xerox Nuvera
Production and Perfecting Systems are displayed in

Table 1-6.

Determining grain direction

One way to determine the grain is to fold a sheet of paper
lengthwise, then make a crosswise fold. Cross-grain folds tend to
be more rough and cracked as shown in

Figure 1-1.

Figure 1-1. Fold with and against grain

Another method you can use to determine the grain direction is to
tear a sheet. Paper always tears straighter with the grain.

Figure 1-2. Tear with and against grain

You can also allow 4 inches (100 millimeters) of the short edge of
a sheet and 4 inches (100 millimeters) of the long edge of a sheet
hang over the edge of a table as seen in

Figure 1-3.

The sheet

hangs lower (bends more) with the grain parallel to the table edge.

Table 1-6. Paper weight ranges

Paper type

Weight range in gsm

Normal (Light)
weight

56 to 84 gsm uncoated bond
56 to 84 gsm uncoated offset

Medium weight

85 to 105 gsm uncoated

Heavy weight

106 to 220 gsm uncoated
140 to 220 gsm coated