Line detecting sensor for 0.5 mm range(line width)

Other Hardware Sensors
1

I want to track 0.5 mm width black colour line in white sheet.So please guide me to choose sensor.

2

To do such a fine line you need a finely focussed beam. Most common sensors would have a beam much wider.

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3

Please explain this concept and how to detect this type of line by using IR sensor or any other method

4

Search for Line follower in the search box at top of page. Gives many hits.

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