Section Factors - Xerox 4450 Forms Creation Manual

Avoiding boundary line
density problems

Section factors

XEROX 4050/4090/4450/4650 LPS FORMS CREATION GUIDE
Terminating the shading before reaching the boundary line helps
to avoid line density problems, conserves space in the form file
and in the form image buffer, and enhances the appearance of
the form.
Figure 4-6. Terminating shading to avoid line density
problems
Normal shading using the
same coordinates and
sizes as the box.
You can create sections to duplicate identical information on a
page. However, you should take into account the form image
buffer limitations and potential line density problems whenever
you use this feature.
A form that is made up of many sections often takes up more
space in the form image buffer than a form created without
sections. This occurs because a single long line requires less
buffer space than many short lines. When you create a form by
invoking defined sections, there is a tendency to begin and end
lines at section boundaries, even when they are continuous
through a series of sections. This is a much less efficient way to
create forms than by taking the long lines out of the sections and
drawing them as continuous lines.
A less obvious inefficiency of using the form image buffer may
occur when you have a line that switches from solid to dotted
and vice versa. The common method of creating this type of line
is to draw short segments of solid and dotted lines. This is an
inefficient use of the form image buffer even if a SOLID 0 line is
drawn first. A SOLID 0 line is useful in saving space in the line
tables, but cannot help save buffer space.
To save form image buffer space efficiently, draw a continuous
dotted line and overlay a series of short, solid line segments.
This technique makes best use of the form image buffer space,
but does not reduce the load on the imaging section of the
system. Refer to the "Scan line density" section in this chapter
for more information. In a form where there is a problem with
exceeding both form image buffer and line density restrictions,
you may have to use logos or a specialty form font.
TROUBLESHOOTING
Early shading termination
using a smaller box for
shading.
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