公开的是与在一个区域的印刷类型，而在另一个区域指示符类型（44）携带在其外周表面上的多个型载流子（12，34）的打印单元。 印刷类型可通过转动型载流子（12，34）被带入一个打印位置。 含有设定装置（32，20，24）一种操作旋钮（32）与每个所述类型的载体（12，34）被移送到其转动的驱动连接。 停止装置（10），102，104，106，110）限制型载流子（12，34）的旋转行程。 弹性锁销元件（96）可以通过弹簧硬度齿槽逆着相对旋转转矩传递到以驱动连接类型支撑件（12，34）牢固地设置装置（32，20，24），保持所述致动钮（32）与特定的，其中所述齿槽转矩大于 用于关（12，34）是必需的扭矩的类型的载体。

There is a printing unit having a plurality of type carriers (12, 34) describes the wear on its outer peripheral surface in a region printing types and in another region indicator types (44). The printing types can be accommodated in a printing position by turning the type carriers (34 12). A an operating knob (32) containing setting arrangement (32, 20, 24) can work with any type of support (12, 34) are brought to its twisting in a drive connection. Stop means (10), 102, 104, 106, 110) to limit the rotational travel of the type carriers (12, 34). Spring locking elements (96) hold the operating knob (32) with a given by its spring hardness cogging torque against rotation relative to the the adjustment assembly (32, 20, 24) in driving connection type support (12, 34), taking the cogging torque greater than the for turning the type carriers (12, 34) is required torque.