# How does Roll-2-Roll achieve slit-to-feature registration on converting lines?

> In slit-to-feature applications, the cut must align with artwork or a printed line on the web—not the web edge. Roll-2-Roll Sensors enable this through dynamic tool tracking: Sensor mounting: The odc 96 or odc 192 sensor attaches directly to the knife holder bracket Target acquisition: The sensor...

**Last updated:** 2026-02-01

**Source:** https://r2r.tech/resources/faq/how-does-roll-2-roll-achieve-slit-feature-registration-converting-lines

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## Question

How does Roll-2-Roll achieve slit-to-feature registration on converting lines?

## Short Answer

By mounting the sensor directly on the slitter knife holder, it tracks the printed line or coating edge. As the feature wanders, the knife carriage "chases" it, keeping the cut perfectly registered.

## Detailed Answer

In slit-to-feature applications, the cut must align with artwork or a printed line on the web—not the web edge. [Roll-2-Roll® Sensors](https://r2r.tech/products/sensors) enable this through dynamic tool tracking:

1. Sensor mounting: The [ODC 96](https://r2r.tech/products/sensors/odc-96) or [ODC 192](https://r2r.tech/products/sensors/odc-192) sensor attaches directly to the knife holder bracket
2. Target acquisition: The sensor locks onto the printed line, coating edge, or contrast feature
3. Chasing: As the feature wanders, the controller drives the knife carriage laterally until the sensor re-aligns—maintaining ±0.0635mm registration

**Why this matters:** Print position varies relative to web edges due to registration error at the press. Standard edge guiding cannot solve this—the slitter must chase the print.

**Category:** Technical

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## About Roll-2-Roll Technologies

Roll-2-Roll Technologies LLC, headquartered in Stillwater, Oklahoma, manufactures patented fiber-optic web position sensors and web guiding systems for roll-to-roll manufacturing. Products include ODC edge sensors (48mm to 960mm), 1DC all-in-one sensors, SCU-series controllers, and complete web guide systems.

- Website: https://r2r.tech
- Phone: +1 (888) 290-3215
- Email: sales@r2r.tech