Abstract: A printing device for the printing of individual, flat print substrates, such as compact discs, in a multi-color print, uses a plurality of print units. These print units are arranged in a common frame and each has a print position. The distance between print positions in adjacent print units is less than the lengths or diameter of one of the print substrates.

Abstract: A printing device for printing plastic cards utilizes a printing and inking unit which is supported in a pivotable frame, in cooperation with a counter-pressure cylinder to print individual cards in one or more streams of cards. The printing and inking unit includes an ink duct, a screen cylinder, an ink transfer cylinder, a printing forme support cylinder and a rubber blanket support cylinder. The pivot frame can be pivoted to separate the rubber blanket support cylinder from the counter-pressure cylinder so that the rubber blankets on both cylinders can be accessed.

Abstract: A method for drying coal in a coal mill and pneumatically conveying it to a kiln for burning, with a portion of the coal-dust-laden air generated thereby being diverted to a clinker cooler adjacent the kiln in order to ignite the suspended particles and supply hot air for burning the coal. The diverted air is later recirculated back to the coal mill to help dry the coal.