System Features; Vertical Black Line Correction; Overview - Ricoh 5510L Service Manual

14 June, 2002

6.5 SYSTEM FEATURES

6.5.1 VERTICAL BLACK LINE CORRECTION

Overview

Vertical black line correction is a new software feature for this machine. It prevents
black lines in image data caused by dirt, paper dust, correction fluid, ink, etc. at the
scan line.
Before scanning the first page of the original, the machine scans the white plate to
check for dust at the scan line or a defect in the CIS; these are detected as
abnormal pixels in the scan line. If something is detected, a warning is displayed in
the operation panel LCD. If possible, the machine corrects the scanned image for
the effects of this dust or defect (if uncorrected, these could cause vertical black
lines in the image).
The number of occurrences for various categories of black line is recorded in the
vertical black line counters in the table shown below. This table is part of the
System Parameters list printed from the operation panel. (☛ 5.2.2 Function No.,
"02. Parameter List")
For details about how to read the table, see the table on the next page ("Count
Detection Parameters List").
NOTE: The outlined numbers in the table below are added for emphasis here only
to show where the counters are. These squares do not appear on the
actual System Parameter list printout.
0 1
45EE00 00 00
45EE10 00 00
45EE20 00 00
45EE30 00 00
45EE40 00 00
45EE50 02 00
45EE60 00 00
45EE70 00 00
45EE80 00 00
45EE90 00 00
45EEA0 00 00
45EEB0 00 00
45EEC0 00 00
45EED0 00 00
45EEE0 00 00
45EEF0 00 00
2 3 4 5 6
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
08 00 00 00 00
08 00 01 00 00
06 00 07 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
7 8 9 A
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 0F 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
6-51
SYSTEM FEATURES
B C D E F
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 4B 00 0F 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00