Preparing image tubes, especially for removing the fluorescent coating, involves introducing magnetic and/or paramagnetic particles into the glass body and moving them onto the fluorescent coating

摘要

The method involves introducing magnetic and/or paramagnetic particles into the glass body of the image tube (2) after removing the neck and moving them onto the fluorescent coating (5) with a relatively moving externally applied magnetic field. The dissolved fluorescent coating particles are finally sucked out via a hollow lance (1).