UV Printer nozzle is normal, but a specific color is missing during printing ARTJET 2025

UV Printer nozzle is normal, but a specific color is missing during printing

 

For your reference, Ink pumping and inkload is same meaning of this article.

We are looking at UV Printer ink supply problems and solutions.

So far, we have explained each part related to ink supply.
If you are curious about the content, click on the article.

1. the importance of the Captop lower tube.
2. the function of the Damper and problematic points.
3. the operating principle of the pump motor.
4. we explained the Captop and Print head positions.
5. we explained how to replace the Captop.

 

For the time being, we will cover the problems and solutions that actual users are talking about.

6. “Last week, the colors were bright, but today, I would say they’re too muddy? The colors overall feel like they’ve been toned down.
7. “White inkload and cleaning, even after repeating the same process 5 times, white does not survive”
8. “Inkload and cleaning are both working well, but white nozzle recovery is not working well.”
9. “The motor pump is running well, but the ink load (pumping) is not working.”
10. “Even if I change the captop and yellow tube, and check the position of the head and captop several times, the ink load (pumping) does not work.”
11.”I used it without any problems yesterday, but suddenly the ink load (pumping) is not working.” 
12. “White is blown around the image”
13. “Inkload is working well, cleaning well, and White just doesn’t seem to live.” 
14. “Inkload and cleaning work, but channels 1,2,3,4 come out sometimes and sometimes not.”
15. “Inkload(pumping) worked fine until yesterday but does not work at all today.”

 

Today, I will explain the problem of a specific color missing during printing even though the nozzle test is normal.

About a year ago, I had a really hard time with this problem, and the troubleshooting data I found that way is very useful.

There was no problem for two weeks after installing the equipment, but this symptom suddenly appeared, and after many twists and turns, I replaced the captop and thought it was solved,

Two weeks later, the same problem appeared, and after checking this and that, I replaced the captop and it was fine again. If I list the tasks I did at that time,,,

• Ink line, main bottle, everything was replaced twice
• Several dampers were replaced
• Captop was replaced
• Checked the position of the head and captop
• Printed numerous test images
• Replaced the print head

Even after replacing everything I could, the problem was not solved, so I almost gave up,,,

I remember feeling disheartened because it was solved so easily.

I. Problem Symptoms _UV Printer nozzle is normal, but a specific color is missing during printing

1. Finding the problem channel by printing a test image _UV Printer nozzle is normal, but a specific color is missing during printing   

“Team leader, I sent you an image via KakaoTalk. Can you check what the problem is?”

“Just a moment. I’ll look at the image.”

The image above lets you know that ‘a certain color seems to be missing,,,’ but you can’t tell exactly which color is missing.

The image below will let you know which color is missing.

If you look at the crimson gradient inside the red border, it is expressed up to the middle, but not all the way.

• The dark part is the area where Magenta is printed,
• and the light part is the area where Light Magenta is printed.

In other words, Light Magenta is not printed, so the problem is that the entire color does not match.

3. Ink Supply Or Data Problem? _UV Printer nozzle is normal, but a specific color is missing during printing

 

“I need to check if it’s a DATA problem or an ink supply problem, so please do a Nozzle TEST.”

There are two reasons why a specific color is missing during printing.

• Is the ink not supplied properly and the ink is not coming out during printing?
• Is the nozzle test coming out, but is there an abnormality in the print head data?

 

First, I checked for a DATA abnormality.

• In the photo above, if the color bar in red does not come out,
• or if it does come out, it is thin, the corresponding channel does not come out during printing.

Although the nozzle test does not reveal all DATA problems, it can be used for initial confirmation.

Based on the results of the photo above, I concluded that it is not a DATA problem, i.e., a print head, data cable, or electronic board.

 

II. Troubleshooting and Causes _UV Printer nozzle is normal, but a specific color is missing during printing

1. Troubleshooting _UV Printer nozzle is normal, but a specific color is missing during printing 

 

“I sent you a picture via KakaoTalk. What is the Capping height value?”

“It’s 6.”

“Change it to 5, press OK, press the x button on the right side of the box to exit, and try again.”

“How do I change 6 to 5? It doesn’t work,,”

“You can change the number by double-clicking on the number section.”

“Oh, yes, it works.”

 

And then, about 20 minutes later, I received a KakaoTalk message saying that the printing was completed normally.

If it’s 5, then 4.5 or 4,  If it’s 4, then 3.5 or 3,
However, if you lower it too much, the print head and captop won’t be sealed, so the best way is to replace the captop with a new one.

 

2. “Why? Suddenly??” _UV Printer nozzle is normal, but a specific color is missing during printing

“if you look inside the captop, isn’t it colored with magenta?”

“Oh, that’s right. There’s a lot of red. I think it was originally black,,”

 

This symptom does not necessarily cause the same problem, but if a specific color is missing during printing and that color is visible a lot on the captop, there is a high probability that it is this problem.

 

The nozzle is normal, and the correct color is printed at the beginning of printing, but a specific color is missing in the middle of printing.
Or, the reason why ink suddenly disappears on the 3rd or 4th printing after printing normally for several times.
The reason why this symptom suddenly appears after a certain period of use after using it well.

It is because the rubber blade of the captop has become dull and has collapsed.

 

To explain in more detail,

• Epson series print heads perform ink loading (pumping) and cleaning through the captop, and are sealed when not in use to protect the head.
• The captop must be tightly pressed against the bottom of the print head to seal it, so that pumping and cleaning can function normally.
• The square frame of the captop is made of rubber to seal the bottom of the head and block air.
• As the capping station rises, the captop rubber gently contacts the print head with the spring force under the captop,
• and as the capping station rises a little more, the spring is pushed a little more, so that the captop tightly presses the bottom of the head.
• The printer always maintains the capping state except for printing.
• In the capping state, physical force is continuously applied to the captop rubber blade,
• and the once firm captop rubber blade gradually becomes dull and sinks.
• As this happens, the print head nozzle surface touches the white cotton inside the captop rubber blade.
• As the nozzle touches the cotton, the ink inside the damper is continuously absorbed into the cotton.
• Then, the ink in the damper will naturally flow downward, and the damper will be empty of ink.

 

If you clean the print head in this state,
the remaining ink in the damper will enter the print head, and the Nozzle TEST will be normal,
but since there is not enough ink in the damper, the color will not come out at the beginning or middle of printing.

 

To prevent this problem, you should replace the consumable Captop periodically.
Of course, you can reduce the physical force applied to the Captop rubber blade by adjusting the height of the capping station,
but since adjusting the height of the capping station can affect other colors and cleaning, it is better to replace the Captop first.

 

III. This is how ARTJET supports our customers.

One thing I feel while selling and maintaining ARTJET UV Printers for 5 years is that the next most important thing after product stability is Troubleshooting DATA.

All products have problems, whether they are actual equipment problems or consumer errors, and product stability is how easily and quickly you solve those problems.

We are organizing all the troubleshooting DATA as follows.

 

1. Printhead Problems and Solutions Total 10

ARTJET UV Printer Problems and Solution _Printhead Problems Summary

Additional issue and solution
The red color does not appear at first, then appears during printing, and then does not appear again
Printhead replacement video and precautions

 

2. Ink Supply Problems and Solutions Total 17

ARTJET UV Printer Problems and Solutions_Ink Supply Problems Summary

Comprehensive application
Damper replacement time
The nozzle test is fine, but it seems that a certain color is not coming out during printing
Capping station block positioning to match the print head and captop
Can I ignore the ink alarm and use it?
UV Printer Monday Morning Routine
I tried white cleaning every day for a month

3. Mechanical problem and Solutions 

1. How to align the print head in a straight line
2. There is a clicking noise from the X-axis
3. Banding problem in specific section
4. The Importance of Head Height in Bidirectional Printing
5. Problems that occur when the wiper height is high
6. When the cleaning belt screw is loose
7. When the capping fixing plate does not fit
8. How do I prepare the ARTJET electricity?
9.When Anti-crash becomes a jam in captop
10. Print head Anti crash system 

 

4. Electron board and Software problem is hereunder. 

1. The printer works but printing does not work
2. Resetting to default settings
3. Touch panel does not turn on
4. The printer is printing, but nothing is printed
5. Software closes when I just press the print button
6. Printing in the wrong place
7. Positioning misalignment in X-axis direction
8. How to make the Offset fine tune
9. Vertical offset is not correct only for the right section of white
10. Software turn off when click print button

 

5. Sai Flexi Rip software  

1. Sai Flexi Rip _ How to make the Spot Color & several mistakes
2. Sai Flexi Rip _ Color is strange after applying Spot color
3. Sai Flexi Rip _ White is sticking out
4. Sai Flexi Rip _ Installation and Dongle Key Recognition Failure Measures
5. Sai Flexi Rip _ Dongle Key Recognition Failure
6. Sai Flexi Rip _ White lines appear when printing only color
7. Sai Flexi Rip _ Color Adjustment through Graph
8. Sai Flexi Rip _ Print size compensation
9. Sai Flexi Rip _ Ink Consumption Calculation
10. What is ICC profile & menu board UV Printing
11. Sai Flexi Rip _ Dongle Key recognition Failure from USB port

 

6. Problems and solutions from actual consumer sites

1. Paper that absorbs ink
2. White Motor Pump Does Not Turn
3. A line-like thing appears at the end of the white print surface
4.Can varnish banding be reduced?
5. Are there many problems with China’s UV Printer?

7. UV Printer Application 

we are explaining not only UV printer problems and solutions, but also what products are produced with UV printers.

1. Braille printing
2. Flip the material and align it
3. 2.5D UV print
4. ARTJET UV Printer Application 6 _아크릴 본딩 장비
5. I phone 14 print limitation 
6. Mask printing not recommend
7. Leather Cigarette Case UV Printing
8. Round soccer strategy board UV printing
9. Primer  performance & limitation 
10. UV Print & Laser crop mark cutting
11. Mobil case UV print profit
12. Screen vs Digital Comparison and UV Printing on Hand Sanitizer Cases
13. Bottle zig & print
14. Canvas UV Printing
15. Applying epoxy effect with varnish
16. Making a light frame with UV Printer & Laser cutter
17. UV Printer & Laser Cutting Equipment Button Name Tag Making
18. UV Printer & Laser Cutting Making a Cell Phone GripTok
19. Making an Acrylic Keychain with UV Printer & Laser Cutter
20. UV Print with Zig
21. How to make RD WORKS CCD camera cutting Video manual
22. Acrylic bonding equipment
23. All the steps to create UVDTF
24. UVDTF TEST Result on various material
25. ARTJET CW+C Print time & Ink Cost
26. Create a white shield with different images on the front and back of the keyring
27. Keyring Business Required Equipment and Investment Costs
29. Acrylic Lighting Goods
30. Ballpoint pen jig printing
31. Staining occurs when printing on coated leather

 

 

That’s it for today.