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8.3 How to use the OMR marks
Gate 1, Gate 2
Mark Structure
The Gate 1 and Gate 2 act as start - reading - marks. Each mark
sequence must always include the two Gate marks. If not, the sheet
will be detected as blank.
Gate 1
Gate 2
E. O. S.
Parity
Seq. 1
Seq. 2
Sequence 1 - 2
The “Seq1” & “Seq2” marks are needed for the OMR reader to detect
that the sheets in a set are fed in the right order. The sequence is: No
marks, S1 mark, S2 mark, S1 and S2 mark, no mark and so on.
End Of Set (E.O.S)
To indicate the last sheet in a set, an ”End Of Set” mark is required.
Parity
There must always be an even number of marks on each sheet. When
needed, add the parity mark.
The example below illustrates a set containing eight sheet.
Page
1
2
3
4
5
6
7
8
G1
G2
EOS
P
S1
S2
The example below illustrates a set containing five sheets.
Page
1
2
3
Sheet Feeder Model 49 Operator Manual
T10114
Jan 2001
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