Fixing Blurry Prints and Nozzle Issues on Procolored R1390 After Belt Replacement

Question:
I recently replaced the orange timing belt on my Procolored R1390, and now my prints are coming out blurry. I've already tried nozzle cleaning and even removed and cleaned the printhead, but the nozzle check still shows broken gaps and the prints remain blurry. What could be causing this problem, and how can I fix it?

Answer:

From your description, several factors could cause blurring and nozzle check inconsistencies after replacing the belt. Let's go step by step:

1. Printhead Distance / APG Setting

If the printhead sits too far from the film or paper, it can result in blurry prints because ink droplets don't land precisely where they should. This can happen if the Auto Platen Gap (APG) setting is incorrect. Make sure the platen gap is adjusted properly for the media you're printing on.

2. Ink Accumulation Under the Printhead

Sometimes, dried ink or buildup beneath the printhead can disturb airflow or cause ink overspray. Even after manual cleaning, residue may remain in hard-to-reach areas. Carefully inspect the underside of the head and surrounding components to ensure there is no ink accumulation.

3. Ink Overspray / Misting

When you notice a halo or haze around solid colors (often magenta and cyan), this suggests that ink mist is not landing correctly. Causes include:

• Dirty or clogged nozzles leading to partial misfiring.

• Humidity issues causing ink to spread.

• Paper quality-low-grade or incompatible media can cause ink bleed.

Running multiple cleaning cycles can sometimes worsen this issue if too much ink builds up. Instead, focus on a careful manual cleaning and using high-quality media.

4. Printhead Alignment Problems

Fuzzy edges or doubled lines often point to misalignment. After replacing the belt, even a slight skew in the carriage movement can throw off precision. Running the printhead alignment utility is essential. If the problem persists, you may need to use Epson Adjustment Software to fine-tune the platen alignment.

5. Mechanical Vibrations or Worn Parts

Since you replaced the timing belt, double-check:

• Belt tension: If it's too loose, the carriage may vibrate during movement.

• Encoder strip: Smudges or ink marks on the transparent encoder strip can cause the printer to misread positioning, leading to blurring. Carefully clean it with a lint-free cloth and isopropyl alcohol.

• Rollers and carriage rails: Dirt, grease, or uneven wear can interfere with smooth head movement.

Addressing printer issues can be a complicated affair due to the hands-on nature of the problems. For this reason, we're not able to provide remote troubleshooting, suggestions, or support for printer repairs. However, we do offer an in-person evaluation and repair service through our local diagnostic facility (https://bchtechnologies.com/printer-repair-service). Please note that we operate on a first-come, first-served basis, and it may take a few weeks before your printer can be worked on. Our services are available for complete printer repairs or individual parts, with clear instructions on how to proceed. While our rates may not always be the most economical, we encourage self-help via online resources. For guidance, you can browse our YouTube channel (https://youtube.com/@bchtechnologies) and use the search function next to the "About" section to quickly find relevant tutorials.

Thank you again for reaching out and for your patience. We're grateful for your support, and we hope this guidance helps you get closer to resolving the issue with your Procolored R1390.