# Does line/contrast guiding require a different sensor than edge guiding?

> No. With Roll-2-Roll Sensors, you do not need to purchase or install a separate sensor for line/contrast guiding. The same ODC or 1DC sensor family handles edge detection, line guiding, center guiding, and contrast guiding. For most high-contrast applications, the standard infrared light source w...

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

**Source:** https://r2r.tech/resources/faq/does-linecontrast-guiding-require-different-sensor-edge-guiding

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## Question

Does line/contrast guiding require a different sensor than edge guiding?

## Short Answer

No. The same ODC or 1DC sensor handles edge, line, center, and contrast guiding.

## Detailed Answer

No. With [Roll-2-Roll® Sensors](https://r2r.tech/products/sensors), you do not need to purchase or install a separate sensor for line/contrast guiding. The same ODC or 1DC sensor family handles edge detection, line guiding, center guiding, and contrast guiding. For most high-contrast applications, the standard infrared light source works for both edge and line detection. For low-contrast or UV-printed lines, white light or UV light source options are available.

**Category:** Technical, General

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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