<p>A door device for an elevator has an elevator door having first and second doors; first and second door drive devices having first and second rotating shafts, respectively; a first drive transmission mechanism for moving the first door by rotation of the first rotating shaft; a second drive transmission mechanism for moving the second door by rotation of the second rotating shaft; a position detector for producing a signal that is based on rotation of the first rotating shaft; and a door control device for controlling the second door drive device so that rotation of the second rotating shaft follows rotation of the first rotating shaft. Movement speeds of the first and second doors are synchronized according to information from the single position detector.</p>
