Ink Drops On The Media; Vertical Banding; When Performing Printing With Long Delay - Roland Advanced Jet AJ-1000 Service Notes

6-4 INK DROPS ON THE MEDIA

NO CHECKING POINT
1
Foreign substances
2 Media strikes Head
3
Static electricity of the med Perform [PERIODIC CL] User's Manual
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 a dirt in teeth of
3
the gear
6-6 MISSING DOT OR DEFLECTED-FIRED DOT APPEARS WHEN PERFORMING PRINTING WITH LONG DELAY
NO CHECKING POINT
Check the main power
1
switch
ACTION REFERENCE
Manual Cleaning User's Manual
Change the media
Wiper Replacement User's Manual
[3-6 INK TUBE
Ink Tube Replacement
REPLACEMENT]
[3-1 HEAD
Head Replacement
REPLACEMENT]
ACTION REFERENCE
Clean / Replace [3-10 Encoder scale
Encoder Scale replacement]
Clean LM Guide
Clean the gear
ACTION REFERENCE
Do not switch off the
User's Manual
main power
When foreign substances such as fiber dust is stuck on the surface of
the head, ink sometimes leaks from it. Wipe the surface of head with a
cleaning stick.
If the media tends to curl or become bumpy due to ink, the head
sometimes strikes the media and it causes the ink dropping problem. It
can be avoided by using the media clamps or changing the head
height.
if the media produces static electricity easily, it makes accumulated ink
on the head while printing and results in ink dropping. When this is set
to a value from 1 min to 99 min, automatic cleaning is performed while
printing and it may prevent ink dropping.
If the cleaning does not work efficiently, foreign substances stuck on
the surface on the head. The ink flows through it and results in ink
dropping.
When the ink tube is broken, the ink flows through the head nozzles
and results in ink dropping.
When the head is broken mechanically, the ink flows through the head
nozzles 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 be appeared at the
position where there is scratch or dirt. Use KIMWIPE for cleaning or
replace it. Never use chemicals, such as alcohol, for cleaning.
When there is dirt on the LM Guide, the head carriage has the big
moving resistance and the printing image becomes to be changed from
the other part at the position where there is a dirt. And it results in the
vertical banding.
When there is a dirt in the teeth of the gear, the movement of the head
carriage is changed at the position where there is a dirt. And it results in
the periodical vertical banding.
The main power is turned off may cause the head nozzle clogging by
not performing self cleaning. To turn off the power, switch off only the
sub power.
6-4
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