A printed material holding device includes a printed material tray for receiving printed material, an adjustable mechanism located above the printed material tray, a binding mechanism, and a transmission mechanism attached to the binding mechanism. The transmission mechanism includes a driving device, a first gear wheel driven by the driving device, a second gear wheel driven by the first gear wheel, and a belt. The driving device meshes with the first gear wheel, and the belt encircles the first gear wheel and the second gear wheel.