Multiple station label printing machine

Label printing mechanism for use with and controlled by a ticket issuing system requiring labels with various data, such as store name, commodity name and grade, price per pound, selling price, data code, and operator code. Type printing elements and coded data bars are disposed on the periphery of a single printing cylinder or drum, there being an auxiliary cylinder in the nature of typewheels, journaled on an axis spaced from the axis of the drum and which, together with a pressure roller and print hammers, comprise printing stations for the labels. The typewheels are set or indexed by means of a key insertable in a slot in the printing cylinder, the key being programmed at intervals therealong corresponding to the typewheel locations. The single cylinder or drum is of modular construction to permit flexibility in adapting to a variety of printing applications.