Epson ET-8550 DTF Conversion: Fixing Paper Feed and Pickup Issues

Question:
I converted my Epson ET-8550 printer for DTF (Direct-to-Film) printing, but it suddenly stopped picking up the transfer sheets. The printer seems like it's about to start printing but fails to pull the paper in. Is there any way to diagnose this problem? I'm even open to sending it in for repair if needed.

Answer:

Now, let's look closely at what's happening with your Epson ET-8550 DTF conversion and why it's failing to pick up the film sheets.

1. Powder and Film Coating Issues

One of the most common causes is the type and orientation of your DTF transfer sheet. Many DTF sheets are single-side coated, meaning only one side has the special film layer that can accept ink and adhesive powder. The rough side is typically the printable side, while the smooth side is meant to face downward toward the paper feed rollers.
If the sheet is inserted upside down (with the coated side down), the printer rollers may not grip the film properly, causing it to fail to load. In addition, excess DTF powder can create a slippery or uneven surface that prevents proper traction. Before printing, always double-check the orientation and clean off any stray powder on the back side of the sheet.

2. Paper Feed Timing and PE Sensor Detection

The Epson ET-8550 uses a Paper End (PE) sensor to measure how long it takes for the sheet to reach a certain point in the feed path after the printer sends a "load paper" signal.

• If the sheet takes too long to reach the sensor, the printer assumes no paper is present and cancels the job.

• If it reaches the sensor too quickly, the printer assumes there's a paper jam.

DTF film sheets are thicker and stiffer than standard paper, so they can easily interfere with the sensor's expected timing. Try feeding a single sheet at a time and gently assisting it by guiding the leading edge during the initial pickup. Avoid stacking multiple DTF sheets, as this can further confuse the timing sensor.

3. Cleaning or Checking the PE Sensor

It's also possible that your PE sensor has become obstructed. Ink mist, DTF powder, or debris can easily settle on the sensor, preventing it from correctly detecting paper movement. The PE sensor is typically located under the platen area where the paper first passes.
To clean it, turn off the printer, open the main cover, and use a lint-free cloth or cotton swab lightly dampened with isopropyl alcohol. Gently wipe the sensor area to remove any buildup. Allow it to dry completely before powering on the printer again.

4. Additional Considerations for DTF Conversions

Because the ET-8550 was not originally designed for DTF use, the feed rollers and sensors are more sensitive to the material thickness and coating of the film. If the problem persists after checking the items above, you may need to inspect the pickup rollers for wear or residue buildup. Cleaning them with alcohol can help restore traction.

If your printer repeatedly fails to detect sheets despite cleaning and proper loading, the PE sensor or mainboard timing could be miscalibrated, which requires professional service.

Addressing printer issues can be a complicated affair due to the hands-on nature of the problems. Therefore, we're not able to provide remote troubleshooting or repair support. We do, however, offer in-person evaluation and repair services (https://bchtechnologies.com/printer-repair-service). Because of high demand, we operate on a first-come, first-served basis, and it may take a few weeks before we can accept a drop-off. Our services include both full printer repairs and part-specific repairs with clear instructions on how to proceed. While our rates may not be the lowest, we highly encourage customers to explore self-help resources online first. You can start with our YouTube channel (https://youtube.com/@bchtechnologies), where you can use the search icon near the "About" section to look up specific repair or maintenance videos.

Thank you again for reaching out and for your continued support. Your trust and curiosity help us keep creating educational content that empowers printer owners and DTF enthusiasts like you to troubleshoot and succeed on their own.