Shifting In Printing/Color Shifting; Ink Drops On The Media; Vertical Banding - Roland SOLJET PRO III XJ-540 Service Notes

6-3 SHIFTING IN PRINTING/COLOR SHIFTING

NO CHECKING POINT
1 The media is set tilted
Encoder Scale is
2
dirty/broken
Encoder Module is
3
dirty/broken
4 Head is out of adjustment Head Alignment
Bad contact of Flexible
5
Cable

6-4 INK DROPS ON THE MEDIA

NO CHECKING POINT
1
Foreign substances
2
Media strikes Head
Static electricity of
3
the media
4
Wiper wears out
5 Broken Ink Tube
6 Broken Head

6-5 VERTICAL BANDING

NO CHECKING POINT
1
Encoder Scale is dirty
2 LM Guide is dirty
There is dirt in teeth of the
3
gear
ACTION REFERENCE
Set the media correctly User's Manual
[3-10 ENCODER
Clean or replace
SCALE
Encoder Scale
REPLACEMENT]
Clean or replace
Encoder Module
[4-4 HEAD
ALIGNMENT]
Refix / Replace the
Flexible Cable
ACTION REFERENCE
Manual Cleaning User's Manual
Use the media clamps/
Replace with suitable
media
Perform [PERIODIC CL] User's Manual
Wiper Replacement User's Manual
[3-6 INK TUBE
Ink Tube Replacement
REPLACEMENT]
[3-1 HEAD
Head Replacement
REPLACEMENT]
ACTION REFERENCE
[3-10 ENCODER
Clean / Replace
SCALE
Encoder Scale
REPLACEMENT]
Clean LM Guide
Clean the gear
Load the media while the left media holder is positioned close to the left
edge. Also, never secure the media holder in place before loading the
media. Loading media without following the steps described in the
User's Manual may make smooth and straight media feed impossible
or affect the print quality.
Feed is not smooth when the media is tilted or tensioned unevenly on
the left and right. Hold the media at the center and pull it out straight
and make sure all areas of the media are taut before setting up the
media.
When Encoder Scale is not read correctly, printing position may shift.
When Encoder Scale is not read correctly, printing position may shift.
If the Heads are not aligned or Horizontal adjustment is not performed
properly, the color shifting occurs.
If the Flexible Cable is not fixed correctly, the Head moves incorrectly
and results in the shifting in printing.
When foreign substances such as fiber dust are stuck on the surface of
the Head, Ink sometimes leaks from it. Wipe the surface of Head with a
cleaning stick.
If media tends to curl or become bumpy due to the Ink absorption
and/or the Heater temperature, the Head sometimes strikes the media
and it causes the Ink dropping problem.
If media produces static electricity easily, the ink tends to remain on the
head surface while printing and results in ink dropping. When this is set
to [1 min] to [990 min], automatic cleaning is performed while printing
and it may prevent the ink dropping.
Also, connecting to ground or humidifying the room may reduce the
static electricity generated on the media.
Cleaning does not work effectively with worn wiper. Therefore, foreign
substances stuck on the head surface cannot be removed completely
and the ink flows through it and results in ink dropping.
When the ink tube is broken, it is not possible to keep the ink line air
tight and results in ink dropping.
When a head is broken mechanically such as a crack, it is not possible
to keep the ink line air tight and results in the ink dropping.
When there is scratch or dirt on the Encoder Scale, the printing image
could be affected and the vertical bandings could appear at the position
where there is scratch or dirt.
When the sliding resistance in the motion of the Head Carriage
increases partly due to some dirt on the LM Guide, it may affect the
printing at the position where there is dirt and the vertical banding may
appear.
When there are foreign substances on the teeth of the gear, the
movement of the Head Carriage changes at the position where there is
dirt. And it results in the periodical vertical banding.
6-3
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