In the digital advertising printing industry, the printer ink color abnormality is a common but headache problem. Whether the picture is off-color, muddy colors, or partial color loss, it may directly affect the visual effect of advertising works and customer satisfaction. As a core user of digital printers, how to quickly locate the root cause of the problem and solve it efficiently? This article will provide you with a complete diagnosis and solution guide to help you easily deal with color anomalies, to ensure that every print can accurately reflect the color!

I. The Common Manifestations Of Color Abnormalities And Cause Analysis

Digital printer color abnormalities may be caused by hardware failure, software settings or operating environment and other factors. The following are several typical performance and its corresponding potential causes:

1. Overall color deviation (such as reddish, bluish)

l Causes:

1) The color profile (ICC Profile) is incorrect or not loaded correctly.

2) The color management settings in the printing software (e.g. RGB/CMYK mode) do not match the actual file.

3) Change in hue due to ink batch difference or expiration.

2. Loss or mixing of some color

l Cause:

1) Insufficient ink.

2) Some of the print heads of the printhead are clogged, resulting in a specific color can not be sprayed normally.

3) Ink supply line leakage or poor sealing of the ink bladder, affecting ink flow.

4) Printhead calibration (Bi - Directional Adjustment) is inaccurate, resulting in misalignment of the printhead in bi-directional movement.

3. Uneven color or the appearance of streaks

l Causes:

1) Improper printhead height setting, resulting in inconsistent ink jet distance.

2) Poor ink absorption or uneven coating of the media (such as poor-quality light cloth, adhesive backed paper).

3) The environmental humidity is too low and the ink dries too fast.

4. Dark or faded colors

l Causes:

1) Poor ink quality or incompatible with the media (such as UV ink is not cured thoroughly).

2) Print resolution is set too low, resulting in loss of color levels.

3) Prolonged exposure to bright light leads to oxidation and fading of the picture (post-processing problems).

II. Quick Diagnostic Steps: From Phenomenon To Root Cause

Step 1: Check the basic software settings

1. Confirm the color mode of the file: ensure that the design file and the printer set the same color mode (such as CMYK for printing, RGB for screen display).

2. Load the correct ICC profile: different media need to match the corresponding color profile to avoid color differences.

3. Calibrate the monitor: use the color calibrator to align the screen and eliminate visual errors in the design process.

Step 2: Check Hardware Problems

1. print head status detection:

1) Execute print head check (print head Check) and observe whether there are broken lines or missing colors.

2) If clogging is found, immediately use the “Clean Printhead” function that comes with the printer, or manually clean stubborn clogs.

2. Check the ink supply system:

1) Check whether the ink tube is leaking and the ink capsule is sealed to ensure smooth ink flow.

2) Check whether the ink cartridge is installed in place to avoid poor contact.

3. Test the suitability of printing materials:

1) Replace other brands or types of media and observe whether the color returns to normal.

Step 3: Optimize printing parameters

1. Adjust the printhead height: according to the thickness of the media to reset the distance between the printhead and the media (usually 1.5 - 2mm).

2. Increase the resolution: for fine images, select a higher DPI (such as 720dpi or more) to enhance color performance.

3. Control environmental temperature and humidity: maintain the working environment temperature at 20 - 28 ℃, humidity 40 - 60%, to avoid the ink drying too fast or condensation.

III. Targeted Solutions

l Scenario 1: Overall color deviation

Solution:

1. Reload the media's ICC profile in the print software.

2. Use a color calibration tool (e.g. EFI ES-1000) to linearize the printer.

3. Replace the original ink with the same batch, avoid mixing different brands or expired inks.

l Scenario 2: Loss or mixing of some color

Solution:

1. Refill the ink and then drain the air from the ink tubes.

2. Perform Deep Cleaning of the printhead, or remove the printhead and soak it in cleaning solution if it is not effective.

3. Check the O-ring of the ink bladder and printhead interface, and replace the aged or broken seals. 4.

4. Recalibrate the printhead Bi-Directional Adjustment (Bi - Directional Adjustment) to ensure the same print position in both directions.

Scenario 3: Uneven color or the appearance of streaks

Solution:

1. Reduce the printing speed, especially in high precision mode to avoid ink breakage due to insufficient ink supply.

2. Replace the media with more ink absorbent media or add a coating treatment to the existing media.

3. Enable the “Pass number increase” mode (such as 8Pass ¡ú 16Pass), through multiple coverage to enhance color uniformity.

IV. Practical tips to prevent ink color abnormalities

1. Regularly maintain the equipment:

1) Perform printhead cleaning once a week and check the sealing of the ink supply system every month.

2) Use the original cleaning fluid to avoid damage to the printheads of poor-quality solvents.

2. Strict management of consumables:

1) Select the original ink that matches the printer model to avoid chemical reactions caused by compatible ink.

2) Store ink away from light and moisture, and use it up within 6 months after opening.

3. Standardized operating procedures:

1) After each media change, reload the corresponding ICC configuration file.

2) Before batch printing, be sure to make a small sample to confirm the color effect.

4. Environmental control:

1) Install constant temperature and humidity equipment, especially in the dry or rainy season requires real-time monitoring of environmental parameters.

V. Summary

Color abnormalities in digital printers is not an insurmountable problem, the key lies in the systematic diagnosis and scientific maintenance. By accurately checking the hardware status, optimizing the software settings, selecting the appropriate consumables, and combining with standardized routine maintenance, you can significantly reduce the probability of color anomalies, to ensure that every picture of the advertisement is colorful and perfect in detail.

If you still encounter difficult problems, please feel free to contact our MYJET technical support team! We will provide professional one-on-one guidance to help your printer is always in the best condition!

Precise Color, Boundless Creativity - Your professional printing partner MYJET!