Every third book in the world is bound using machines produced by the German company Kolbus. Nearly everything from Harry Potter to the local phone book runs across their conveyor belts.
The family firm was founded as a blacksmiths in 1775, changing to bookbinding in 1900 as the horse-and-buggy days waned. But technology is changing yet again, and Kolbus has to work hard to stay relevant in the digital age.
Report by Julia Henrichmann.