How to adjust colors in Sai Rip ARTJET 2025

How to adjust colors in Sai Rip

 

So far,  UV printer-related issues, We’ve compiled

24 articles on ink supply issues,
9 articles on head basics,
12 articles on actual head issues and their solutions,
10 actual mechanical Machine Problems and Solutions.
12 Problems and Solutions of Electronic Boards and SW Actually Issued

For related information, click on the article to go to the link.

 

I’ll explain the issues, solutions, and features related to the Sai lip.

1. How to install Sai rip and how to set up the driver and basic settings afterwards

Driver and basic settings after installing Sai Rip

2. How to fix when Sai rip Rock key is not recognized

 

Today I’m going to show you how to adjust colors in Sai Rip.

I. Can you match the colors to the Japanese equipment? _How to adjust colors in Sai Rip

1. Customer Request _How to adjust colors in Sai Rip

These were acrylic samples printed on the back, one with a Mimaki UV printer and the other with a Roland UV printer.

They asked if the colors could be matched to match the printed colors.

2. First attempt at basic ICC profile _How to adjust colors in Sai Rip

I printed with the default ICC profile and compared it to a sample printed with a Japanese product. Overall, the colors were weak.

Several factors contributing to similar color saturation are as follows:

• Due to differences in ink density and color gamut, applying an ICC profile doesn’t guarantee the same color reproduction.
• Ink droplet sizes vary depending on the print head, resulting in differences in resolution. The maximum colors that can be reproduced will inevitably vary depending on the resolution.
  For more information on ink resolution, see  Printhead resolution concept
• Third, the RIP software used differs. Image files are converted to a printable file format using RIP software. Different RIP software programs use different conversion methods and color reproduction methods.
• Fourth, when printing color + white + color on acrylic with different transparencies, such as transparent acrylic, the image colors exposed by the ink will differ from those seen through the transparent acrylic. The reason why the color of the surface where the ink is exposed and the color seen through the acrylic are different is because “transparent acrylic” is not completely transparent as we think, and contains some color. The color seen through the subtle color of the acrylic contains that color, so the color difference depends on the transparency of the acrylic used.

 

II. Is it possible to achieve similar color implementation? _How to adjust colors in Sai Rip  

1. Differences between Chinese and Japanese ink _How to adjust colors in Sai Rip

Since 2010, China has been the world’s largest consumer of UV ink.

 

The Evolution of Chinese UV Ink
Although UV printers have been manufactured in China since 2005, the company initially used Japanese Toyo ink. Japanese Toyo UV ink, when installed outdoors, discolored after nine months.

Afterwards, British Sunjet ink, known for its excellent stability and adhesion, held the top spot for over three years. However, its red ink color was weak,

and it subsequently ceded its top spot to Nazdar UV Ink from the US and Agfa UV Ink from Belgium.

Since then, UV inks manufactured in China have emerged, and today, almost all printers use Chinese inks.

Global ink companies have invested heavily in the Chinese market, and as a result, ink quality has improved. Chinese ink manufacturers were created to replace the inks of global ink companies.

The ink color and adhesion are therefore bound to be similar to those of global companies.

In other words, “Chinese inks are not weaker in color than those manufactured by Japanese, European, or American manufacturers.”

 

 

2. Resolution difference _How to adjust colors in Sai Rip  

Resolution is ultimately determined by how small the ink droplets are.

Roland products use the Epson DX4 print head, while our products use the Epson FA1080-a1 print head.

The DX4 print head is 0.5 to 1.0 pico smaller than the FA1080-a1, but it has four colors, while the FA1080-a1 print head has six colors.

The quality difference resulting from the smaller pico can be compensated for by the additional colors Lc and Lm.

According to someone who has used both Mimaki and Roland products,

“The Roland print quality is better than the Mimaki, but it was too slow, so I switched from Roland to Mimaki.”

Ultimately,
“The difference in print quality due to the ink droplets, or in other words, the print resolution, is not significant.”

3. Because the Rip software is wrong _How to adjust colors in Sai Rip  

ARTJET uses Sai RIP.

Some people might think that because it comes with the printer, it’s cheap or poorly designed RIP software.

However, it was developed in Salt Lake City, USA.
Rip, headquartered in Salt Lake City, is Onyx Wasatch, a company you’ll likely recognize if you’ve used a lot of large equipment.
It’s been a widely used RIP software in Europe for over a decade.

In other words,
“The RIP software program’s specifications are not far behind those of Japanese equipment.”

 

4. Difference in acrylic transparency _How to adjust colors in Sai Rip

The difference in acrylic transparency is a factor beyond our control.

I ignored this and tried adjusting the color.

III. Color adjustment _How to adjust colors in Sai Rip

1. Rip software Color adjustment results _How to adjust colors in Sai Rip

There are two ways to achieve the same result:

• Adjusting the colors in the AI ​​file.
• Adjusting the colors using the color adjustment graph in Rip software.

If you can’t achieve the same result no matter how many times you adjust the AI ​​file, you should use the color adjustment graph in Rip software.

I used the color adjustment graph to achieve the same result without adjusting the AI ​​file.

You can see the purple area before applying the color options.

This is the color I found after adjusting the color adjustment graph several times to match the purple color.

Red and eye color are clearly visible, before color adjustment

This is the color I found after adjusting the Red and Eye images and color adjustment graph several times.

2. Color adjustment graph principle  _How to adjust colors in Sai Rip

The numbers on the bottom are the input color values, and the values ​​on the vertical axis are the actual print color values.
When nothing is adjusted, the 50% value on the bottom will meet the 50% output value on the vertical axis as you move upward.
In other words, if you leave the graph untouched, the input values ​​and ICC profile values ​​will be printed as is.

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Now, let’s change the input from 5% to the output from 8%.

The graph changes to a parabolic curve, drawing a color balance based on the changed value, rather than just the input portion.

Except for 0% and 100%, the output values ​​for all colors are slightly higher than the input values.

While maintaining color distortion, the output value is higher than the input, resulting in an overall darker color.

In the image above, Channel: All is set to All, meaning that all CMYK Lc Lm channels are adjusted.

Clicking the down arrow next to All allows you to select individual colors and adjust their value graphs separately.

 

3. Color adjustment example _How to adjust colors in Sai Rip

“The black isn’t being expressed properly. It’s a bit bluish. Is it not possible to express it as a perfect black?”

The values ​​I found are: Changing the total input value to 95% and the output value to 97% will produce the desired black color.
However, adjusting the graph too much can change all the colors, so it’s important to find the right values.

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“How did you increase the purple in the example above?”

If the purple is still weak despite adjusting the overall color in Black, adjust the graph for each color, not the entire color.
For a deep purple, I changed the 5% area in the Cyan graph to 8%, as shown below.

4. Save the adjusted graph _How to adjust colors in Sai Rip

 

Click the Save As icon below

Select the options you want to save and click OK.

Since we’re using color, check only the Color Adjustment tab and click “OK.”

After a while, the window below will appear, give it a name and click the OK button.

If you want to retrieve the saved color adjustment values, select from below

5. Final request _How to adjust colors in Sai Rip

There are many factors that affect color, including UV ink, print resolution, RIP software, and materials.

While it’s impossible to achieve a similar color match using the [Color Adjustment Option], it’s possible to achieve a similar result.

However, this requires the four conditions mentioned above to be met.

“In the case of the ARTJET UV Printer, the ink, head specifications, and RIP are not significantly inferior to those of Japanese equipment,” so I decided to adjust the colors.

 

IV. 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.

You can see the product print quality by clicking here.

 

1. Additional information on printhead problems

Please refer to the information summarized above, and there is no additional information summarized yet.

 

2. Additional information on ink supply issues

Please refer to the information summarized above, and the additional information summarized below is as follows.

Addition

“no clogged nozzles, but banding in the red ARTJET 2025”
“When I print it, the whole thing has a yellow tint to it”

 

3. Additional information on Mechanical issues 

Please refer to the information summarized above, and there is no additional information summarized yet.

4. Additional information on Electron board and Software issues 

Please refer to the information summarized above, and there is no additional information summarized yet.

5. Sai Flexi Rip software  

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

 

6. Problems and solutions from actual consumer sites

1. Paper that absorbs ink
2. A line-like thing appears at the end of the white print surface
3.Can varnish banding be reduced?
4. 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.