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Chapter 7 OMR
OMR Description
OMR marks or "bars" are printed in the center of uniformly spaced rectangular fields
which are not visible. Not all fields must contain marks. If a giv e n cell has a mark within
its boundaries, you can consider the cell to have a value of 1 (one). If the cell has no
mark, it has a value of 0 (zero). With this symbology you can generate a binary number
that can be used by any system to interpret the meaning of the code. The content of
the code can vary from manufacturer to manufacturer, but the applications are gener-
ally very similar. A typical symbol has 8 to 32 fields and will contain encoded data relat-
ing to groups, sets, page numbers, or any combination of these. A start or "gate" mark
is always present in the first cell; all remaining fields may or may not have marks
present.
7-3
MS-9 Scanner User's Manual
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