Printing machine with removable components

Details Printing machine with removable components Printing machine with removable components

1996-02-02

1998-08-04

Burr, Edgar S.

Printing

Assembly or disassembly features

492 8, 492 9, 492 10, 492 18, B41F 3300

Patent

active

057878137

ABSTRACT:
A printing machine, particularly a sheet-fed offset printing machine, which has removable components, such as, in particular, inking-unit, dampening-unit or varnishing-unit rollers, is described. The printing machine includes an arrangement wherein it can be established, particularly via a control station of the printing machine, whether a component and which component is not properly installed. This measure is intended primarily to avoid malfunctions or even machine damage. This is achieved, according to the invention, in that the removable component has a permanent magnet which can be sensed by a sensor mounted fixedly relative to the frame of the printing machine at a point corresponding to the magnetic field produced by the permanent magnet. The signal or signals from one or more sensors are fed to an evaluation unit which determines the proper installation state from these signals.

REFERENCES:
patent: 4646042 (1987-02-01), Eshelman
patent: 4912291 (1990-03-01), Hepperie et al.
patent: 5025726 (1991-06-01), Funabashi et al.
patent: 5537920 (1996-07-01), Hasegawa et al.

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