Abstract: A process and circuit for a printer or copier has control data loaded into a working memory of a control unit. The control data is compared to predetermined values which correspond to a predetermined acceptable control data range. An error signal is generated when the control data is outside the acceptable range.

Abstract: A method for controlling a printer includes the steps of generating a plurality of set up data sets such as a first set up data set corresponding to a first printer language and a second set up data set corresponding to a second printer language. Each set up data set comprises language independent control data and language-dependent control data. The method further includes the step of loading the language-independent data and the language-dependent data of the first set up data set corresponding to the first printer language into the main memory of an electronic printer controller. During ongoing printer operation, the method further includes the step of monitoring the print data stream being communicated to the electronic printer controller and determining when a change in printer language from the first printer language to a second printer language occurs in the data stream.

Abstract: A printing system for printing on recording media first by a first printer and then by a second printer provides that print data is supplied in a page by page manner to the first and second printers from a print data source. Page information is sent to the printers using the print data and corresponding page information is sent to a buffer storage by the first printer. The page information in the buffer storage and the page information sent to the second printer are verified in a page by page manner by determining adherence to a predetermined rule. A synchronization mark is generated on the recording media by the first printer and is read by the second printer, which is used to control the printing process.

Abstract: A method for operating a printer or copier provides that error conditions are sensed utilizing monitoring units. A determination is made as to whether the error condition is readily repairable by the user and, if so, the display unit displays information on the error condition including instructions for repairing the error condition. If, on the other hand, the error condition is determined to be repairable only by a skilled technician, the display unit displays only the instructions to contact the skilled technician.

Abstract: A printer or copier apparatus is fashioned in such a way that with a single apparatus a recording medium can be printed both with magnetically readable toner (MICR toner) and also with standard toner. For this purpose, it contains one or more correspondingly fashioned developer stations (ES) and a control unit for the adaptation of the print process parameters dependent on the mode of operation.

Abstract: In a printer or copier, error conditions are sensed. A determination is made as to whether the error condition is readily repairable by the user and if so, the display unit displays information on the error condition, including instructions for repairing the error condition. If, on the other hand, the error condition is determined to be repairable only by a skilled technician, the display unit displays only the instructions to contact the skilled technician.

Abstract: In a printing or copying device which has one or several exchangeable part units with a modular assembly, the part unit to be identified has an identification device with a non-volatile memory for storing function-relevant operating data of the part unit, said operating data being allocated to operating states. The part unit also has a communication interface for detachably connecting the identification device to a process control device of the printing or copying device.

Abstract: A drive arrangement for driving a plurality of non-mechanical printing devices working in tandem operation includes an independently functioning control arrangement for each printing device coupled to an external data source, the control arrangement being organized in a data control level and in a device control level. Coupling of the printing devices through coordination control units ensues on the device control level for synchronization so that a web-shaped recording medium is printed first in a first device and then supplied to further, following printing devices.