MIMAKI UJF-3042MkII EX Maintenance manual

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Inkjet printer UJF-3042MkII/3042MkII EX/6042MkII
Requests for Daily Care and Maintenance
This machine is a precision machine equipped with extremely fine mechanisms. Especially, the nozzle sur-
face of the heads from which the ink is discharged is affected even by a slightest attachment of dust or paper
powder and the proper printing results could not be obtained. With a view to using this machine in a better
condition, we would like to recommend performing the following care and maintenance on daily basis.
1. When to care
When to care What to care Reference Page
Once a day
(at the end of the daily work)
Surroundings of the heads P.2
Capping station P.3
Mist filter 1 P.3
Once a week
(at the end of the work on
weekend)
Exterior P.4
Waste ink tank P.4
Mist filter 2 P.4
Ink discharge passage P.5
Once a month Refill and check the antifreeze liquid P.6
Tools required for maintenance
• UJ Cleaning swab (SPC-0386)
• F-200 / LF-200 Washing Liquid (SPC-0568)
• Cotton swab
• Gloves
• Soft fabric
This printer uses a ultraviolet curable ink (UV ink).
Be sure to wear the included safety glasses and gloves.

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2. Daily care
(1) Surroundings of the heads ("Cleaning the Head and the Area around It" Chapter 4 of
the Operation Manual)
1Move the carriage to the left and open the
maintenance cover.
• Refer to the Step 1 to 5 of Chapter 4 “Cleaning the Head
and the Area around It” of the user’s manual to perform
the operation.
2Soak the UJ Cleaning swab or the waste cloth in the maintenance cleaning liquid and
wipe off an accumulated ink on the side of the head and on the bottom surface of the
slider.
• Scrape them off with clean swab etc. In this case, never rub the nozzle portion of the head.
• When possible, use the UJ Cleaning swab (SPC-0386) for cleaning around the head/ capping station/ wiper.
Using the other cotton bud may attach lint, then it may damage the machine.
• Be sure to perform maintenance for the ink cap and the wiper of capping station every day. If you leave it
dirty, dirt may adhere to the nozzle surface, or, dust and dry ink may be rubbed against the nozzle. It may
cause discharge defect.
• Clean the bottom of carriage every day so that it will not get dirt from inks or dusts. If you leave it dirty, dust
and dry ink may be rubbed against the nozzle at wiping operation when performing head cleaning.
• When you clean the carriage bottom surface, fully be careful not to rub the nozzle surface.
• The heads and their surroundings are the parts most liable to be tainted in this machine and if
tainted, it could cause adverse effects to the functions of the machine and the results of the printings.
Moreover, as the head itself uses very fine mechanisms, sufficient precautions are required for the
care and maintenances.
Clean the side surface of the head (shown
in deep gray) with a cleaning swab.
The nozzle part (Never
touch it.)
Clean with a cleaning swab or a waste cloth.

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(2) Capping Station ("Cleaning the Wiper and Cap" Chapter 4 of the Operation Manual)
The surrounding area of the cap is also liable to be stained by the dust and ink. It is recommended to clean
the head frequently using the cleaning liquid for maintenance suitable for the ink used to avoid the stains on
the head.
• F-200 / LF-200 Washing Liquid (SPC-0568)
1Move the carriage and open the right front
cover.
• Refer to the Step 1 to 4 of Chapter 4 “Cleaning around
the wiper” of the user’s manual to perform the operation.
2Clean the wiper.
3Clean the cap.
• Dip the UJ Cleaning swab into the cleaning liquid for
maintenance and wipe off the cap.
4Clean the mist filter 1.(“Cleaning the mist
filter” Chapter 4 of the Operation Manual)
• If the stain is strong, please replace the filter referring to
the Operation Manual Chapter 4 “Replacing the mist
filter”.
Wipe off so that cleaning solution for maintenance will not
remain.
Projection
(1) Remove the wiper. (3) Set the wiper at the original
position.
(2) Clean the wiper and bracket.
Wiper
Bracket

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3. Periodically care (Once a week)
Users are advised to perform the maintenance works described below once a week so that the printer will
keep its high performance and accuracy over an extended period of its life.
(1) Exterior (“Cleaning the Exterior Surfaces” “Cleaning the table” Chapter 4, Operation
Manual)
Depending on the using environment, the dusts or sand powder could stick to the exterior of the main unit. To
avoid the entry of the dusts into the moving part of the head, wipe them off with soft cloth dipped into water
and squeezed tightly.
(2) Waste ink tank (“If a Waste Ink Tank Confirmation Message Appears” Chapter 4 of
the Operation Manual)
Check whether the waste ink tank is full or not. Take care so
that the waste ink never overflows the tank.
(3) Clean the mist filter 2. (“Cleaning the mist filter” Chapter 4 of the Operation Manual)
If the stain is strong, please replace the filter referring to the
Operation Manual Chapter 4 “Replacing the mist filter”.

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(4) Ink Discharge Passage (“Washing the Ink Discharge Passage” Chapter 4 of the Oper-
ation Manual)
Wash the ink discharge passage (DISWAY WASH) regularly (about once a week) to prevent the head nozzles
from clogging due to ink coagulation inside the passage.
1Select “MAINTENANCE” menu  “STATION”  “DISWAY WASH”.
• Refer to the Step 1 to 3 of Chapter 4 “Washing the Ink Discharge Passage” of the user’s manual to
perform the operation.
• The carriage will move onto the platen.
2Press key.
• Dry suction operation is performed repeatedly until the washing work is completed.
3Open the right front cover.
4Fill up the cap with cleaning solution for
maintenance.
• Suck maintenance solution into a dropper and fill up
the cap with it.
5Press the key.

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4. Periodically care (once a month)
(1) Refill and check the antifreeze mixed water (“Refilling antifreeze mixed water” Chap-
ter 4 of the Operation Manual)
It is recommended that check the amount of antifreeze liquid about once a month to keep the machine itself in
good working order.
When antifreeze liquid is a little, refill the antifreeze liquid.

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5. Storage of media
Media should be stored in the little dust area, and not in direct sunlight. Avoid storing the media in the area
with high temperature and high humidity.
6. Storage of ink bottle
Be careful of the followings to store.
• Store the ink bottle in no direct sunlight, and no high humidity.
• As it's a delicate product, do not drop it.
• Ink IC should not be contaminated and discharged static electricity.
• Be sure to store the ink bottle and the ink IC together.
7. The examples of defective printing
These following examples indicate improper head (nozzle) firing by dust, which effect printing.
Confirm the nozzle condition periodically before or during outputting not to use in such as this condition.
The nozzle condition can be confirmed with [test printing] in this plotter. (Operation manual Chapter 2 “Test
Printing”)
Deflection Nozzle out
Ink dropping Satellite
Ink bottle and Ink IC

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8. Recovery method of defective nozzle discharge
When this printer has not been used for an extended period of time, or depending on the environmental tem-
perature, the discharge at the nozzles could become unstable. In such a case, the following methods may be
taken to recover the status of the nozzles.
9. Supplies
1.Daily maintenance and care
Perform the cleaning of the parts described in this document.
2. Performing Head Cleaning (normal). Refer to
Chapter 2 of Operation Manual.
After having performed the care and maintenance stated in step
1, perform the cleaning of the heads in accordance with the pro-
cedures stated in Operation Manual.
Perform test printing and check
(Chapter 2 of Operation Manual)
In the event nozzle missing etc. have not been improved
3. Performing Head Cleaning (hard). Refer to Chapter
2 of Operation Manual.
If the nozzle missing does not disappear even after repeating the
head cleaning (normal) several times, reset the cleaning mode to
"hard" and perform the cleaning again.
Perform test printing and check
(Chapter 2 of Operation Manual)
In the event nozzle missing etc. have not been improved
4. Performing Head Cleaning (urtora). Refer to Chap-
ter 2 of Operation Manual.
Perform test printing and check
(Chapter 2 of Operation Manual)
In the event nozzle missing etc. have not been improved
5. Performing sub-tank maintenance. Refer to Chap-
ter 4 of Operation Manual.
Perform test printing and check
(Chapter 2 of Operation Manual)
In the event nozzle missing etc. have not been improved
6. Performing nozzle wash. Refer to Chapter 4 of
Operation Manual.
Perform test printing and check
(Chapter 2 of Operation Manual)
In the event nozzle missing etc. have not been improved
7. Replacing the wiper. Refer to Chapter 4 of Opera-
tion Manual.
Perform test printing and check
(Chapter 2 of Operation Manual)
In the event nozzle missing etc. have not been improved
8. Set the nozzle recovery function. Refer to Chapter
4 of Operation Manual.
Set the nozzle recovery function.
Perform test printing and check
(Chapter 2 of Operation Manual)
If the nozzle missing has not been improved even with the above operations,
please call us or your sales agent from whom you purchased this printer.
Product Name Product No. Product Name Product No.
F-200 / LF-200 Washing Liquid SPC-0568 UJ Cleaning swab SPC-0386
Wiper kit 300TS SPA-0271 Bottle wipe filter set SPC-0820
Mist filter set SPC-0819 Cap absorber SPC-0822
LED glass SPA-0290 Waste ink tank absorber SPC-0658

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10. Safety Precautions
]
11. Installation environment
• Use this printer as much as possible in a dust-free environment. Fans and air-blowers could cause the
dustspewing.
• The using environment of this printer is from 20 to 30°C (68°F to 86°F) in temperature and from 35 to 65 %
in relative humidity. Avoid the use of this printer at a temperature and humidity higher or lower than the
indicated ranges.
CAUTION
Be sure to wear the included safety glasses and gloves.
To secure the stability of the ink discharge, when the printer is not used (output) for an extended
period of time, it could become necessary to discharge periodically a small amount of ink (flush-
ing), depending on the kinds of the ink.
When not using for an extended period of time, execute the [CUSTODY WASH] function of this
equipment, ("When the Machine Is Not Used for a Long Time (CUSTODY WASH)" Chapter 5 of
Operation Manual) and put off the power switch on the front, only. Leave the main power switch
at the side of the equipment on and keep the cable socket inserted into the plug.
Make maintenance after the LED UV has been sufficiently cooled, or burn injury may occur.
Never disassemble this machine. It could cause electrical shock, fire and breakage.
Keep away the moisture from the inside of this machine. If the inside is moistened, it could
cause electrical shock, fire and breakage.
Perform the maintenance and care after switching off the power and taking off the power cable.
Otherwise, it could cause unexpected accidents.
Avoid using benzene, thinner, and chemicals containing abrasive compounds. The surface of
the cover could be degenerated or deformed.
Do not supply lubricant oil etc. to the inside this machine.
It could cause the breakdown of this machine.
Aggregates will occur when the UV curing ink(UV ink) is mixed with water or alcohol. Please be
careful not to adhere water or alcohol to not only the nozzle surface, but also the head and
around the cap, wiper etc.

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12. Notes for working environment
Performing frequency of the print setting or maintenance is greatly influenced by the printing environment or
the condition of the media used. Use this machine with a full understanding of the followings.
Working environment Consideration
When the head gap is set wide
because fibers stick out of media
UV light can expose the nozzle when there is a lot of scattered mist.
Raise the refreshing level for drawing (Operation Manual Chapter 3
"Setting of REFRESH"), and set the automatic maintenance (
Operation Manual Chapter 4 “Automatic Maintenance”).
Increase performing frequency of every maintenance.
When the media that reflects UV
light well is used such as glasses
or glazed metal
When there is an
infrequentlyused ink (print head)
An infrequently-used print head can be unstable to discharge ink
comparing with the other print heads. Raise the refreshing level for
drawing (Operation Manual Chapter 3 "Setting of REFRESH") to
raise the usage rate of the head.
When printing on the media on
which static can be charged
Please take a sufficient antistatic such as using the optional ionizer
or putting a humidifier. Static may collect mist or dust around the
printing area or the head. To print continuously for a long time, set
the automatic maintenance. (Operation Manual Chapter 4
“Automatic Maintenance”)
When printing in a dry place (such
as in winter)
When printing on a markedly
uneven media (or object)
To keep the head gap the same, please fill the gap by setting media
which do not use where a printing media is set. Leaving the head
that has been degraded by reflected light may cause failure that
needs replacing of the head.

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13. Maintenance when needed
(1) Cleaning of the LED UV unit
Remove ink or dust attached to the LED UV periodically.
(2) Removal of ink attached to the table
If necessary, remove ink attached to the table with an alcohol-impregnated cloth. Be careful not to scratch the
table face when removing cured ink.
(3) Removal of the vacuum hole clogging on the table
The vacuum holes on the table can be clogged with ink. Remove the ink in the vacuum holes when needed.
Be careful not to leave a part of cured ink on the table.
(4) Cleaning of the bottom of the carriage
Remove ink attached to the bottom of the carriage.
A proper maintenance schedule is determined by the operator who observes throughout a period of
use of the printer.
• Some media need maintenance every time of printing.
• The maintenance schedule differs depending on the image to be printed. For example, when the image is
almost filled, perform maintenance frequently.
• Clean the LED UV with care in order not to scratch an irradiation part on the bottom of the unit. If there is
a certain amount of dirt or a light shielding object on the irradiation part, ink may not cure well and it may
cause banding.
• Please replace the part if the stain is too strong.
Caution when using solvent
• Leaving the table after attachment of ink may make the ink removal hard with alcohol only. When using a
special solvent, contact our office before use. It may cause a failure of the machine.

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