55
ENGLISH
Parity Mark
By adding a parity mark the reading code can be checked. When the 1-track code is used
the sum of the marks has to be even.
Safety Mark (only 1-track OMR)
The safety mark is used as an extra security. With
skewed paper the reading head can miss part of the
reading code. 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 must always be present on the document
if it has been activated as an OMR code.
Examples of OMR Code
In the figure the legend for the following example is
shown. In this example feeder station 1 is the
reading feeder. The feeder stations 2 through 6 are
selected for selective feeding.
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.
Normal paper flow
Skewed paper flow
Start mark
Start mark
Safety mark
Safety mark
reading direction
reading direction
accumalate
mark printed
no mark printed
insert
no selective feed
wanted, mark not
printed
selective feed
wanted, mark
printed
or
reading feeder 1
selective feeder 2
selective feeder 3
selective feeder 4
selective feeder 5
selective feeder 6
Содержание 6602 Series
Страница 1: ...6602 Series Inserters OPERATOR MANUAL FIRST EDITION 8 2007...
Страница 6: ...5 ENGLISH Conventions Note A note gives additional relevant information...
Страница 7: ...6...