Xerox 4050 User Manual

TROUBLESHOOTING

Figure 4-2.

These two examples of lines entered in the line table result in
lines that are visually contiguous but are not logically contiguous.
As indicated in the following sections that describe problems
with boxes, such conditions can result in a situation where FDL
cannot find a box, or creates a box that has one or both of its
dimensions equal to zero.

To enter lines, draw the longest possible logical line first, then
draw any shorter elements.  If the logical line consists of different
types of lines (for example, solid and dotted), draw a SOLID 0
line first, extending over the full range of the logical line.  For
example, the above example of five line segments of five units
each might have consisted of alternating solid and dotted lines.
In that case, the following is the most reasonable method of
specifying the total line:

AT 0 LINE 0 TO 25 USING SOLID 0;

AT 0 LINE 0 TO 5 USING SOLID 2 AND AT 10, 20;

AT 0 LINE 5 TO 10 USING DOTTED 1 AND AT 15;

Figure 4-3 shows the resulting line.

Figure 4-3.

Scan line density depends on printer and imaging speed.
Therefore, it can vary with each product and even with different
configurations of the same product.  The basic limitation is linked
to dispatchable items, which become visible in character count
and number of lines.

Both characters and lines contribute to the dispatchable item
count.  When one dispatchable item is superimposed over
another dispatchable item, the result is considered to be two
dispatchable items by the system.  When too many dispatchable
items are present on a scan line on the long axis of the paper,
the LPS operating system displays the following line density error
message:

OS6950 LINE DENSITY EXCEEDED

4-6

XEROX 4050/4090/4450/4650 LPS FORMS CREATION GUIDE