MIMAKI UJF-3042MkII e Maintenance manual

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Inkjet printer
UJF-3042MkII/3042MkII e/3042MkII EX/3042MkII EX e/6042MkII/
6042MkII e
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
To order replacement consumable items, contact your local dealer or our service office.
For more information on other consumable items, refer to our website.
https://mimaki.com/supply/inkjet.html
When to care What to care Reference Page
Once a day
(at the end of the daily work)
Surroundings of the heads P.5
Capping station P.6
Mist filter 1 P.7
Twice a week
(Monday and Friday) Nozzle (When PR-200 ink Ver.2 using) P.7
Once a week
(at the end of the work on
weekend)
Exterior P.9
Bottom of LED lamp and bottom of mist filter P.9
Waste ink tank P.10
Wiper tube P.10
Mist filter 2 P.11
Ink discharge passage P.11
Once a month Refill and check the antifreeze liquid P.11
Nozzle (When PR-200 ink Ver.3 using) P.7
Tools required for maintenance note
UJ Cleaning swab
F-200 / LF-200 maintenance liquid (SPC-0568)
PR-200 cleaning solution (C-ML013-Z-B2-1-KW) When PR-200 ink using.
Cotton swab
Gloves
Soft fabric
Polydropper (161-22-25-02) When SUCTION WIPER using
This printer uses a ultraviolet curable ink (UV ink).
Be sure to wear the included safety glasses and gloves.

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2. Safety Precautions
]3. 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
This printer uses a ultraviolet curable ink (UV ink). 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 (flushing), 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 benzine, 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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4. 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.
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.
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.
Ink bottle and Ink IC

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7. 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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8. 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 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 maintenance liquid
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.
2(When using rubber wiper) Clean the wiper.
3(When using suction wiper) Clean on or
around the wiper.
4Clean the cap.
• Dip the UJ Cleaning swab into the cleaning liquid for
maintenance and wipe off the cap.
Wipe off so that cleaning solution for maintenance will not
remain.
(1) Remove the wiper. (3) Set the wiper at the original
position.
(2) Clean the wiper and bracket.
Wiper
Bracket
Protrusion
Suction wipe Suction wipe
Area around wiper Area around wiper
UJF-3042MkII/UJF-3042MkII EX/
6042MkII
UJF-3042MkII e/UJF-3042MkII EX e/
6042MkII e

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5Clean 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”.
9. Periodically care (for models with PR-200 ink only)
On models equipped with the PR-200, ink may clog the nozzle.
Please check the version on the label of the PR-200 ink cartridge, pack, or bottle, and clean the nozzle.
Please clean the nozzle twice a week for Ver.2 and once a month for Ver.3.
(1) Nozzle (“Nozzle Wash (When PR-200 ink using)” Chapter 4 of the Operation Manual)
1Open the maintenance cover on the station
side.
Label Ver. notation position
220ml Cartridge 250ml Bottle
600ml Pack 1L Bottle

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2Clean the wiper.
• Include F-200 / LF-200 maintenance liquid in the clean stick and clean.
• Wipe off F-200 / LF-200 maintenance liquid so that no maintenance liquid remains.
• Refer to the Operation Manual, “Chapter 8 (2) Capping Station” steps 2 to 3 and perform the operation.
3Clean the cap rubber of the PR-200 head.
4Fill the cap of PR-200 head completely with the
PR-200 maintenance liquid (C-ML013-Z-B2-1-
KW).
• Fill up the PR-200 maintenance liquid just before it
overflows from the cap.
5Close the ma intenance cover, and press the key.
6Set the time to one minute for the maintenance liquid to be left as it is and press the
key.
• The nozzle washing is started.
7After washing the nozzles, perform the head cleaning (hard) for the PR-200 head.
8Check the nozzle status with a test print.
Use the F-200 / LF-200 maintenance liquid always to
clean the wiper, bracket, and cap rubber, and do not use
the PR-200 maintenance liquid (C-ML013-Z-B2-1-KW).
To prevent nozzle clogging, do not use PR-200 mainte-
nance liquid other than the cap of the PR-200 head.

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10. 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) Bottom of LED lamp and bottom of mist filter (“Clean the bottom of the LED lamp
and the bottom of the mist filter” Chapter 4, Operation Manual)
1Move the carriage to the left and open the maintenance cover.
• Refer to the Step 1 to 5 of Chapter 4 “Clean the bottom of the LED lamp and the bottom of the mist filter”
of the user’s manual to perform the operation.
2Clean the bottom of the LED lamp and the bottom of the mist filter.
●When it is very dirty
(1)Soak the cleaning stick in the maintenance liquid.
(2)Clean the ink which is adhered to the bottom of the LED lamp and the bottom of the mist filter with
the image of gently tapping.
●When there is dust on it
(1)Place the tape with weak adhesive strength (drafting tape, etc.) on the relevant part.
(2)Lightly press with your fingers.
(3)Peel off the tape.
•Execute multiple times as needed.
• Do not rub. The low reflection treatment may peel off.
• The power to press the tape should not be too strong.
The low reflection treatment may peel off.

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(3) 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.
(4) (When using suction wiper) Wiper waste ink tank
(“If Check Wiper Waste Ink tank Warning Appears” Chapter 4 of the Operation Man-
ual) *UJF-3042MkII/6042MkII only
Check the waste ink level in the waste ink tank frequently. Continuing to use the machine without disposing of
the waste ink may result in waste ink overflowing from the waste ink tank.
(5) (When using suction wiper) Wiper tube (“Cleaning the Wiper and Cap” Chapter 4 of
the Operation Manual)
• Use a dropper to fill with the cleaning
solution through the mouth of suction
wiper.
To prevent nozzle clogging, do not use PR-200 mainte-
nance liquid other than the cap of the PR-200 head.
Clean the red area with a clean stick
or similar.
①
②
Dropper Dropper
UJF-3042MkII/UJF-3042MkII EX/
6042MkII
UJF-3042MkII e/UJF-3042MkII EX e/
6042MkII e

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(6) 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”.
(7) 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.
11. 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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12. Replacing consumables
To order replacement consumable items, contact your local dealer or our service office.
For more information on other consumable items, refer to our website.
https://mimaki.com/supply/inkjet.html
(1) Replace wipers/ wiper absorbers (“(When using rubber wiper) Replace the wiper/
wiper absorber.” Chapter 4 of the Operation Manual)
The wiper and the wiper absorber are consumable. When the display indicates the warning message
“!REPLACE WIPER/ABSORBER”, it is necessary to check and replace the wiper and wiper absorber immedi-
ately with a new one.
Also, wipe ink sticking to the lower surface of the slider off.
(2) Replace the nozzle cap(“(When using suction wiper)Replace the nozzle cap” Chapter
4 of the Operation Manual)
If the nozzle cap is badly scratched or dirty, replace it by referring to Chapter 4 "Replacing the Nozzle Cap" in
the User's Manual.
(3) Replacing the mist filter (“Replacing the mist filter” Chapter 4 of the Operation Man-
ual)
If the stain is strong, please replace the filter referring to the Operation Manual Chapter 4 “Replacing the mist
filter”.
(4) Replacing the mist filter box (“Replacing the mist filter box” Chapter 4 of the Opera-
tion Manual)
If the stain is strong, please replace the mist filter box referring to the Operation Manual Chapter 4 “Replacing
the mist filter box”.
(5) Replacing the LED Glass (“LED Glass Replacement” Chapter 4 of the Operation Man-
ual)
If the stain is strong, please replace the LED Glass referring to the Operation Manual Chapter 4 “LED Glass
Replacement”.
• When the warning message for replacing wiper is shown, confirm whether there is no damage and
fuzz at the top edge of the wiper film. If there is no damage on the top edge of the wiper film, it is
possible to use the wiper continuously without replacing it.Also, if ink is not accumulated in the wiper
absorber, use it as it is.
• A cleaning wiper is an option. Please buy one through the dealer in your region or at our service
office.

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13. 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

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14. 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.
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.(When using rubber wiper) Replacing the wiper.
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
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)
In the event a large number of white missing nozzles etc. have not been restored
9.Set the white maintenance. Refer to Chapter 4 of
Operation Manual. 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.

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2016 MIMAKI ENGINEERING CO., LTD.
D203045-40-18102021 KM