Man Roland Druckmaschinen Ag

Johannes Tenfelde

Gerold Wende

Karsten Wendt

Horst Klingler

Michael Dotzert

Matthias Zoll

Michael Hess

Heiner Sirowitzki

Sven Olaf Cabus

Heiner Schilling

Jens Dietrich

Alexnader Wiedekind-Klein

Hans-Martin Reinert

A monitoring device is provided for a printer, especially a sheet-fed offset printer. The printer has a controller that records the signals of signal transmitters in the individual units of the printer, through which command signals for actuators/drives connected to the control can be generated as a function of the signal state, and a monitoring computer that additionally records the signal states of the signal transmitters and causes the switching off of actuators/drives. In the monitoring device, the signal states of the signal transmitters (G) of the printer units are fed to several slave computers (S), which are connected to each other via a monitoring bus (UB) and to a monitoring master (UM) connected upstream from the monitoring computer (UR). The actuators/drives (A) are connected to respective ones of the slaves (S) and can be switched off by the slaves in response to a command sent by the monitoring master (UM) via the monitoring bus (UB).

Monitoring device for printer

A computer controlled sheet-fed offset printing machine is described which includes an Interpreter-program for obtaining an image of the signal-state of specified interfaces of the many interfaces that are needed for the operation of the computerized printing press. The Interpreter-program has access to a reserved region of memory for storing and manipulating, if desired, the image of the signal-state. Furthermore, the Interpreter-program has very limited and defined access to the inputs and resources used by the control programs used to operate the computerized printing press. This ensures that the control programs can execute in real-time unaffected by the execution of the Interpreter-program while data is acquired by the Interpreter-program while the computerized printing press is in operation. The Interpreter-program can execute diagnostic routines and provide data for detecting and correcting errors that are otherwise hard to localize in a complex system with complex software.

Control computer for a printing machine

The present invention relates to a control means for a printing machine, in particular a sheet-fed offset printing machine, having a plurality of units, such as feeders, printing units, varnishing and coating devices, deliverers, folding apparatus and the like, each unit being assigned a station having at least one computer and these stations being connected to one another via a first bus. It is intended to ensure that the switching processes which are to be carried out in the individual units of the printing machine at specific, predetermined angle positions can proceed exactly, even at the highest machine speeds. According to the present invention, for this purpose it is proposed that, in addition to the first bus, via which the stations exchange signals with one another, a second bus is provided, via which the individual stations may be fed with the angle position signals of a single-turn rotating angle encoder which is fitted on one unit of the printing machine. It is thus ensured that each station can carry out the switching processes which are a function of angle position in the associated unit.

Control system for a printing machine

Growing community of inventors

Grosskrotzenburg, Germany

Johannes Tenfelde