# 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://live-roll2roll.pantheonsite.io/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 designs and manufactures patented fiber-optic web position sensors and advanced web guiding controllers — the precision measurement and control core of modern roll-to-roll manufacturing. Spun out of Oklahoma State University's Web Handling Research Center and trusted by Fortune 500 medical, battery, and nonwovens manufacturers, our patented sensors work without recalibration at ±0.1mm accuracy up to 760 mpm — typical customer outcomes are 50%+ less downtime and payback under six months. Headquartered in Stillwater, Oklahoma, our team of PhDs, controls engineers, and industry veterans extends the sensor + controller core into complete web guide systems including stepper-motor-based linear actuators (RLA, BLA, LHS).

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