A device for accommodating punched sheets, in particular loose sheets of paper, and a folder, in particular a binder, having such a device is provided. The device comprises a base plate, at least two retainer bracket pairs designed to be openable and closable, each of which having a first bracket and a second bracket, wherein the at least two first brackets are connected to each other by a bracket connector that is connected to the base plate so as to be rotatable about an axis of rotation that runs parallel to the base plate, and is connected to a pivot lever. The device further comprises a carriage that is displaceably mounted on the base plate, wherein the carriage has a link that guides the pivot lever and is designed such that, when the carriage is displaced, the link determines a rotational movement of the pivot lever about the axis of rotation, which is parallel to the base plate, in both directions of rotation.

A device for accommodating punched sheets, in particular loose sheets of paper, and a folder, in particular a binder, having such a device is provided. The device comprises a base plate, at least two retainer bracket pairs designed to be openable and closable, each of which having a first bracket and a second bracket, wherein the at least two first brackets are connected to each other by a bracket connector that is connected to the base plate so as to be rotatable about an axis of rotation that runs parallel to the base plate, and is connected to a pivot lever. The device further comprises a carriage that is displaceably mounted on the base plate, wherein the carriage has a link that guides the pivot lever and is designed such that, when the carriage is displaced, the link determines a rotational movement of the pivot lever about the axis of rotation, which is parallel to the base plate, in both directions of rotation.

The invention relates to a cover for disc-bound, fold-over binding systems, comprising a series of parallel T-shaped slits, characterized by the fact that the cover consist of a one-piece sandwich panel containing two rigid outer layers which are permanently attached to a flexible core layer, wherein the sandwich panel is provided with an area which runs parallel to the edge of the cover wherein between 0.1% and 100% of the outer layers of the sandwich panel is removed.