Brother GTX pro Bulk Manuel utilisateur

ENVIRONMENTAL CONDITIONS

Ideal Operating Temperature & Humidity

Temperature & Humidity are recorded in the Log le

PRE-TREATMENT RATIO & QUANTITY

Mixing Pre-Treatment Solution

A ratio of 1:1 (1 part Brother pretreat to 1 part distilled water) is recommended.

Go to the menu: Maintenance Temperature/Humidity Info

> If temperature is too cold, printer will switch automatically to Low-Temp Mode and reduce output.

> If humidity too low, please install a HUMIDIFIER.

> Min & Max Temperature & Humidity ranges are ideal and we recommend running your GTXpro at a higher

number than minimum to reduce additional cleanings.

> This mixing ratio might vary due to the type of garment which is used. See video on garment proling.

1 Part

Brother

Pretreat

Distilled

Water

1:1 Mixed

Pretreat

Solution

1 Part

> Proper pretreat volume for a garment should be determined by a garment’s absorbency rate in

conjunction with using the Highlight-Mask Check Pattern to help determine driver ink settings.

> Don’t forget that you have to dene a surface of 14 X 16 inches [35 X 40 cm] with your pretreatment ma-

chine to weight the amount of spray, with a scale, after applying the pretreat on a T-shirt.

> For example, on a Schulze pretreat machine, you should enter a length of 13 inches and the full width

of 4 nozzles will be 17 inches. And then, calibrate the pretreat machine to spray 30 g on the garment.

1:1 Mixed

Pretreat

Solution

High Absorbency

Fabric Absorbency Pretreat Amount

40-50 Grams

Medium Absorbency 30-39 Grams

Low Absorbency 15-29 Grams

Thick materials or open weaves like hoodies

Regular Cotton Tees 4.0 to 6.0 oz

Thin Material + Blend or Specialty Items

Determining Pretreat Quantity

Pretreat solution quantity will vary based on thickness of the garment. Use the chart below as a guideline.

HEAT PRESS SETTINGS FOR PRETREAT CURING

1:1 Mixed

Pretreat

Solution 35

Seconds

75-80

PSI

5-5.5

Bars

360°F

182°C

Conveyor Dryer Settings for Pretreat & Ink Curing

> Conveyor Dryer recommended for high volume printers. See heat press settings below as an alternative.

> Check the REAL temperature with a probe or with strips to ensure proper washability of the print.

Conveyor Dryer Pretreat Curing Conveyor Dryer Ink Curing

1:45

Minutes

3:30

Minutes

320°F

160°C

320°F

160°C

> Placing silicone based parchment paper over the pretreated garment while heat pressing can mitigate dried

pretreat buildup on the non-stick covers. Clean the non-stick covers on the heat press with a scrap t-shirt or

cloth after every 5 t-shirts if not using silicone based parchment paper.

WHITE INK AGITATION & SEDIMENTATION

NEVER POWER OFF THE PRINTER

VERY IMPORTANT

The Brother GTXpro B should ALWAYS

be left with the Power ON. NEVER shut

OFF the printer except if requested by the

display message only. Power is needed to

perform the needed circulation of the white

ink and auto maintenance every day.

In the event that power goes out or your printer has an error during printing, push the Carriage

back all the way to the left to dock it and use the Fixing Pin to lock it in place (see images above).

Before relling the bulk white ink tank, you have to agitate the white ink container. When white

ink is left idle for a period of time, ink separation occurs, where sediments from the ink start to

settle at the bottom of the container. Sediments must be removed through proper agitation of

the container BEFORE lling the White Ink Tank, otherwise, unagitated white ink could create

an inconsistant ow of ink through the lines causing dull prints and potential damage to the

ink delivery system.

HEAT PRESS SETTINGS FOR INK CURING

> Check the REAL temperature of the heat press with a probe or with strips to be sure that your garments

are properly cured for washability.

HEAT

PRESS INK

CURING 35

Seconds

10-20

PSI

0.7-1.4

Bars

356°F

180°C

CHECKING WHITE INK FOR SEDIMENTATION

Use an agitation machine to properly break up sediment. Dierent types of agitation

machines vary in the time it takes them to properly agitate white ink. A gyroscopic mixer takes

about 5 minutes to agitate, while a vibrating plate can take up to 2 hours.

After agitation, let the white ink settle for 10 minutes. This gives the white ink time to dissipate

any foam that may have appeared during the agitation process.

Turn the container upside down and use a ashlight to view the sediment. Move the

container around gently to clear any foam that has appeared.

A ashlight will review the amount of sediment in the container. Look for dark areas of

more solid material. If ink has no sediment, it is OK to rell the tank. An example is below:

HANDLING INK BEFORE PRINTING

When handling bulk ink containers, you will need specialized tools to help you in your daily

workow. 20 Kg [18 L] bulk ink containers are heavy and cumbersome, which necessitates

the use of both a hydraulic scissor lift and an agitation device. These specialized tools will

help to professionally move and agitate the inks before lling the tanks on your printer.

Hydraulic

Scissor Lift

Agitation

Device

> The shadows of bubbles may be mistaken for sediment after the white ink agitation, so wait until bubbles

disappear before checking the container for sediment.

> To distinguish between bubbles and sediment, lightly shake the replenishment ink container. The shadows

of bubbles move but the shadows of sediment do not move.

Repeat Agitation Steps If Any Sediment Remains

Adjustable Hydraulic Scissor Lift With Castors

Agitation Devices for White Ink Containers

Two Suggestions for Agitation Devices

This tool will help to move the bulk ink containers into

position to ll the ink tanks cleanly and easily.

To use the adjustable hydraulic scissor lift to help rell an

ink tank, adjust the lift to the appropriate height and guide

the faucet on the ink container directly over the opening

of the ink tank before opening the spout (see photo to the

left). This will keep the ink from spilling on the oor.

We suggest two dierent types of machines to agitate the white ink containers before lling the ink

tank on the printer. These tools will help you to mix the ink homogeneously. Remember that a bulk

ink container of 18 liters is quite heavy and weighs around 44 pounds. Once the non-agitated ink

goes inside the tubes of the printer, it is not possible to remove it and shake it again.

If white ink is not agitated thoroughly, white prints will look faded and gray.

An agitation device must be used, such as a Santint G48 Gyroscopic Paint Mixer for high ink

usage or a tness vibration plate for low to intermediate ink usage. It is best to pick the agitation

device based on how often you will use an 18L container of white ink. You must have a device

available to use even if neither of these examples are purchased.

> White ink needs agitation EVERY TIME before relling the tank.

> White ink containers MUST BE FLIPPED 180° in your stock room once a week.

> Inspect white ink containers for sediment periodically during agitation. Test, as time listed is only recommended.

Santint G48

Gyroscopic

Paint Mixer

Insert the white ink

container inside the

two doors and let

the mixer spin for

5 minutes.

BLUEFIN

Fitness 3D

Vibration

Plate

Just drop the white

ink container on

top of it and let the

vibrating plate run

for up to 2 hours.

REFILLING PROCESS WITH IC STICK

Because ink is delivered in bulk, you will have to follow the procedure step-by-step to

activate the relling with the IC Stick.

The printer will detect when the ink is lled in any of the tanks

• If the IC Stick is NOT in place, the printer will prompt you for it.

• Even when printer is OFF, the rell will be detected by the GTXpro B.

• The whole process is controlled by the display MENU.

• If the IC Stick is broken or lost, contact support at BrotherDTG.com/Support for a new one.

Be aware of the delay in the printer recognizing the IC Stick before determining that it is broken.

• If the IC Stick is for the wrong color, the printer will detect and trigger an alert.

• Calibration of the ink tanks is necessary once a month.

• In the case of an operator error, the printer will display an alert to protect the GTXpro Bulk.

• Keeping a spare set of ink will help you to not be stopped during production.

Here is an example to show the whole procedure to rell Yellow ink:

REFILLING INK FLOW USING INK REFILL MENU

REFILLING BULK INK TANKS

REFILLING CLEANING SOLUTION

> CALIBRATION of tank sensor is necessary ONCE A MONTH

> The Internal Tank has a sensor that detects when

empty, however, the Bottom Tank doesn’t have a sen-

sor to detect when empty. It must be visually inspected

and relled when running low to avoid issues.

Relling of the Cleaning Solution is done from the bottom tank. The GTXpro B has an

internal tank which draws from the bottom tank and once empty, it will prompt an error.

When “C.S. Empty” error

shows up on the display,

ll up the tank.

Then select “Filling

solution tank” in the

Menu.

> CALIBRATION is necessary to keep the ACCURACY of the pressure sensor

INK TANKS CALIBRATION

By performing the calibration, the actual remaining ink amount is matched with the remaining

ink amount detected by the printer.

If calibration is not performed, “Empty error” may be displayed even though a large amount of

ink remains in the tank.

• Warning “Tank correction time” appears once every 30 days

• If you do not perform ink correction for two days, an error will occur and you will not be able

to print

• To solve this error 1010 & 1011, you need to perform a CALIBRATION

ORDER to follow

for CALIBRATION:

Regarding White ink, the number

is dicult to check. If you use a

ashlight, it will be easier.

READING METHOD

BEST PRACTICE FOR PRINTING - A MUST!

> Always keep the closest distance between the printheads and the surface of the garment.

It is very important for the long life of your printer.

Good

Gap

Excessive

Gap

INPUTTING METHOD

CALIBRATION FAQ

• Select the number on the tank where the ink level makes contact

• If the liquid is on the border, please select the larger number

Question: Is it necessary to perform calibration for all colors once a month even though the

indicated remaining ink on the display and on the tanks are not dierent?

Answer: YES. Even if there is no shift at present, all colors need to have calibration

performed for them once a month. This will prevent a shift from occurring. The reason for

performing all colors at the same time is to prevent the number of warnings from increasing.

Question: What if the printer operator inputs the wrong number?

Answer: Enter the menu again and select “Remaining sensor correction”. Then re-enter the

correct values for all colors.

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