Device for thermal printing of a rolled paper strip, in particular for a plug-in or cordless portable payment terminal

In a device for thermal printing of a rolled paper strip, in particular for a portable payment terminal, the said paper strip being designed to be unwound in front of a thermal print head by means of a paper drive roller, and to be cut into sections in order to form a payment authorisation or the like, the device being of the type which comprise a frame, which comprises a fixed part, which can support the thermal print head, and a mobile part which forms a cover for access to a paper compartment, and is articulated around an axis which is parallel to the drive axis of the rolled paper strip,

• the improvement wherein the fixed part of the frame comprises two lateral cheeks, which are spaced from one another, parallel to one another, perpendicular to the axis of articulation of the cover, and each comprise on their inner side fixed articulation means, the two lateral cheeks being connected partially to one another by a dished cylindrical wall;
• wherein the cover comprises two discs, which are designed to be accommodated between the two fixed cheeks, and each comprise on their outer side mobile articulation means, which cooperate with the fixed articulation means, the two discs being connected to one another by a cylindrical envelope portion, which is designed to form the paper compartment;
• and
• wherein the mobile and fixed articulation means are designed to make the cover pivot between an open position, in which access to the paper compartment is open, and a closed position, in which access to the paper compartment is closed.