Formax 6600 Series - Manual (Page 34)

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• pages are numbered 1-2-3-4-5-6-7-8-1-2-3-
etc. This requires three additional sequence
marks.
Pages numbered 1-2-1-2-1-etc., one
sequence mark used (first sequence
check position)
sheet 1: no mark printed sequence check 1
sheet 2: a mark printed sequence 1
sheet 3: no mark printed sequence check 1
etc.
Pages numbered 1-2-3-4-1-2-etc., two
marks used (first and second sequence
check position)
sheet 1: no mark printed sequence check 2
no mark printed sequence check 1
sheet 2: no mark printed sequence check 2
a mark printed sequence check 1
sheet 3: a mark printed sequence check 2
no mark printed sequence check 1
sheet 4: a mark printed sequence check 2
a mark printed sequence check 1
etc.
Pages numbered 1-2-3-4-5-6-7-8-1-2-
etc., three marks used (first, second
and third sequence check position)
sheet 1: no mark printed sequence check 4
no mark printed sequence check 2
no mark printed sequence check 1
sheet 2: no mark printed sequence check 4
no mark printed sequence check 2
a mark printed sequence check 1
sheet 3: no mark printed sequence check 4
a mark printed sequence check 2
no mark printed sequence check 1
sheet 4: no mark printed sequence check 4
a mark printed sequence check 2
a mark printed sequence check 1
sheet 5: a mark printed sequence check 4
no mark printed sequence check 2
no mark printed sequence check 1
sheet 6: a mark printed sequence check 4
no mark printed sequence check 2
a mark printed sequence check 1
sheet 7: a mark printed sequence check 4
a mark printed sequence check 2
no mark printed sequence check 1
sheet 8: a mark printed sequence check 4
a mark printed sequence check 2
a mark printed sequence check 1
etc.
Parity mark
By adding a parity mark the reading code can be
checked. When the OMR-2 code is used the
sum of the marks has to be even.
Safety mark
The safety mark is used as an extra security.
With skewed paper the reading head can miss
part of the reading code (see figure below). In
these situations the safety mark is not read, and
the system will give an error. The safety mark
also indicates the end of the reading code. This
mark always has to be printed on the document
if it has been activated.
1
A
A
B
B
B
C
C
2
3
4
5
6
7 #1
#2
#3
#4
#1
#2
#3
Normal paper flow Skewed paper flow
Start mark Start mark
Safety mark Safety mark
reading direction reading direction