Patent ID: 6860663

Claim:
A printing device for printing on printing material in the form of a roll, the device comprising a print head unit, a transporting device for the printing material, a housing board, on which the print head unit and the transporting device are mounted at one end in cantilevered manner and in a predetermined relationship relative to one another, the transporting device comprising a stiff support member which is rigidly connected to the housing board, a mounting member having guide elements and which extends substantially parallel relative to the housing board and is held on the stiff support member, and at least one transport roller for the transportation of the printing material, the transport roller having first and second ends and being mounted at both of said first and second ends, the stiff support member comprising connecting elements for releasably fixing the mounting member, and guide elements which co-operate with corresponding guide elements of the mounting member for positioning the mounting member with reference to the support member, the first end of the transport roller being mounted to the housing board and being releasably connected to a drive device, the second end of the transport roller being releasably mounted to the mounting member, and the stiff support member being formed from an extruded profile, comprising grooves arranged perpendicularly relative to the housing board for accommodating the mounting member in snug-fitting and slideable manner, and comprising two molded channels in the form of segments of a circle for accommodating centralizing studs for fixing a position of the mounting member in a precise manner.