naaltryckhuvud, luminaire foer naaltryckhuvud, and foerfarande foer installation of naaltryckhuvud

摘要

The head includes a front plate (13), a number of fixtures (14) with armatures (7) and printing needles (12), a body (3-8) incorporating a magnetic field path for each fixture, and a bottom plate (24). The fixtures are fastened in the space between the front plate and the body by clamping. The front plate and/or body has centering components which work in conjunction with recesses in the fixtures for centering the latter. The body incorporates an intermediary plate (6) for conducting the magnetic field, and which functions in conjunction with the front plate. The centering components on the front plate consist of circular rod-shaped raised structures in the peripheral part of the plate. The centering recess are two semicircular formations in each fixture section with counter-directed apertures.