EBS-6100 Printer User's Manual
Paragraph 6 - SERVICE and maintenance
EBS
Ink-Jet Systems
®
106
20070529#20.5
examples given below can be seen as evidence that the ink has lost its properties and is
no longer suitable for service:
• Poor quality print is produced although all possible adjustments have been made in
relation to the operation of the head. You can observe specific symptoms, such as
the precipitation of ink drops out of the print, distortion of linearity in the horizontal
direction or distortion of characters, especially in the upper part of the print. You can
also face periodical or frequent phasing errors, quick fluctuations of ink viscosity in
a wide range of values, the clogging of the main ink filter and the ink filter inside the
gun.
• Old ink must have been added to the ink system or because the ink lost its properties
due to improper storage or similar reasons.
• Foreign matter (such as water, oil, solvents, dust or fine particles) has gotten inside
the ink system and may change physical and chemical properties of the ink. The
substances can get through the sucking duct inside the head.
If the unit is to be out of use for a longer time, switch it off, open the head and wash the
inside part of the head using a spray or possibly a gentle brush.
NOTE: The unit needs to be switched off in the regular mode except for emergency
situations. But in untypical situations non-standard procedures should be
adopted. For example,
• If the unit has been shut down in the emergency mode (due to temporary
power failure) and is not to be used for a longer period of time, it should be
switched first on and then off in the regular mode (to get the tubing rinsed).
Any dry ink should be removed from the inside of the head.
• If the emergency shut down was followed by less than 3 minutes of off time,
the printer can be switched on and used without needing to have the head
checked.
NOTE!
Sharp tools or improper liquid may lead to head damage when
they are used for cleaning out and washing the head. This
damage will not be covered by the guarantee!
The unit may only be supplied with ink, solvent and cleaning
liquid provided by the manufacturer of the printer!
Different types of ink must not be mixed!
THE FAILURE TO MEET THE ABOVE REQUIREMENTS SHALL
RELEASE THE MANUFACTURER FROM ITS GUARANTEE
OBLIGATIONS.
6.2. Checking the adjustments
A user can make sure whether proper adjustments have been made within the head by
checking on the terminal display the head status which is updated on an on-going basis. The
meaning of the status parameters is described in section 4.3 Print Head Status.
If the phasing signal decays or deteriorates after the high voltage has been applied, check if
the ink jet finds its way into the gutter with the required accuracy - see section
4.4.4.8 Adjusting the Ink Jet Path. If the ink jet fails to fall into the gutter, use the
CLEAN NOZZLE command, several times if necessary, and check whether the nozzle is
clear or not.
NOTE: When the gutter is soiled with ink the phasing signal may decay!
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