Canon Colorado 1650, Operation Manual

Page: 343 / 384

Lines at swath boundary
Introduction
Swath boundary. Two adjoining swaths/passes of the printhead must be positioned without
overlap (dark lines), or gap (white lines ).
Problem description Cause Action
OD lines occur at the
swath boundary.
OD of the lines usually
varies over the print
(from left to right or
from line to line). Usually worse during
1
st
meter.
The way it varies is
useful in determining
the cause of the prob-
lem. If the suggested
solutions do not help.
Perform a media cali-
bration.
May be accompanied
by OD/Gloss differen-
ces between swaths
(these are uniform
within the swath), or
even a generally re-
duced OD in case of a
fixed, large paper step
error.
Very sharp line(s), no
OD variation over
print and only for a
single mono-color
(and its corresponding
mixed colors)? This is caused by a
nozzle failure at swath
boundary and not due
to paper step. Run maint
nozzle optimization.
For some (fast) print
mode-medium combi-
nations gloss/OD
swath boundary lines
will always be
present. Independent from pa-
per step errors,
though paper step op-
timization may reduce
visibility. Roll core gear is dam-
aged or warn out. Or-
der new and replace. Manual optimization
of the paper step cor-
rection may reduce
visibility, see
Change
the media settings on
page 65
.
Switch to a slower
print mode or a more
robust strategy, see
Select a print mode on
page 75
.
Follow the procedure below. You can stop at any time in the procedure when the problem is
solved.
Lines at swath boundary
Chapter 9 - Troubleshooting and support 343