EP2045076B1 - Web-fed printing press - Google Patents

Description

The invention relates to a web-fed printing press according to the preamble of claim 1.

Web-fed printing presses have a plurality of printing form-based printing units for the static printing of at least one printing substrate web surface of at least one printing substrate web with a printed image that is the same for all printed copies of a print job. Each printed copy usually contains several printed pages. Such printing form-based printing units that serve the static printing of the or each printing material web are typically designed as offset printing units. It is also possible that the printing form-based printing units are designed as gravure printing units.

From practice, it is already known to provide in a web printing press in addition to the printing form-based printing units that serve the static printing of the or each substrate web with a print copy for all printed copies, at least one processing device to the printed copies inline and in addition to the static printing by dynamic To customize printing. Such a processing device can be a pressure-formless printing device, such as an inkjet printing device, for example, to print at least one printing material web surface of at least one printing material web with a print image that is variable for at least some printed copies. Furthermore, such a processing device can be a painting device or an adhesive device or a laser cutting device or a film transfer device or a perforation device or an imprint device for RFID or odorants or invisible ink or the like.

From the prior art is the US 5 906 156 A in which a web-fed printing press with an integrated inkjet printing device is disclosed, wherein the dynamic image data are adjusted in a control device with signals, in particular the position of the printing cylinder for stationary printing of the printing material, so that thereby the dynamic printing image in the direction of positioning the printing form variable image the web running direction is positioned to the static printed image.

In web-fed printing presses which have at least one printing plate-based printing unit for static printing at least one printing material web and a processing device for inline individualizing at least one printing material, the control-side integration of the or each processing device in the web printing machine is difficult, namely in particular if an existing, conventional web press , which so far only printing form-based printing units and no processing facilities such. b. includes pressure-free inkjet printing devices to be retrofitted with at least one such processing device. In this case, there is no opportunity on an existing press control system to provide control commands to the or each machine.

On this basis, the present invention has the object to provide a novel web printing press.

This object is achieved by a web-fed printing press according to claim 1.

According to the invention, the or each processing device is assigned in each case a sensor which automatically measures a printed substrate web which is static and, depending on the measurement of the printing material web, drives the respective processing device in order to handle the processing to be performed by the processing device, in particular the dynamic print image to be printed, in the transport direction and / or Positioned transversely to the transport direction of the printing substrate at the desired position on the printing substrate, wherein the or each processing device is associated with an operating device to provide the or each processing device independently of a printing press control system control commands.

The present invention has the advantage that the or each processing device, which preferably serves to individualize at least one static printed substrate, is independent of a printing press control system, as can be provided via an operating device for the or each processing device individually without the aid of printing press control system control commands , The statically printed printing material web can be measured via a sensor assigned to the respective processing device, wherein the respective processing device can be controlled depending on the measurement of the respective printing material web. If the sensor can not automatically determine a transport speed of the respective printing material web, the respective processing device requires the transport speed of the respective printing material web as the only input variable from the web printing press. Otherwise, the or each processing device is self-sufficient on the control side, so that when retrofitting an existing web press no changes to the printing press control system are required. Existing web presses can be retrofitted in a simple manner with processing facilities preferably for the customization of static printed substrates.

Fig. 1:

einen schematisierten Ausschnitt aus einer erfindungsgemäßen Rollendruckmaschine.

Preferred embodiments of the invention will become apparent from the dependent claims and the description below. An embodiment of the invention will be described, without being limited thereto, with reference to the drawing. Showing:

Fig. 1:

a schematic section of a web printing machine according to the invention.

Hereinafter, the invention with reference to Fig. 1 for the preferred application, the integration of a trained as an inkjet printing device processing device described in a web press.

However, the invention is not limited to this application. Rather, in the context of the invention, other processing devices such as a painting device or an adhesive device or a laser cutting device or a film transfer device or a perforation device or an imprint device for RFID or odors or invisible ink or the like may be integrated into a web press.

Fig. 1 shows a schematic section of a trained as a newspaper printing machine web press in the field of a printing form based printing unit 10. The printing form based printing unit 10 has four printing units 11, wherein in the area of the printing unit 10 a web-shaped substrate 12, which is transported in the vertical direction by the printing unit 10, on both sides , So in the range of both printing material web surfaces, can be printed. The printing form-based printing unit 10 is used for static printing of the printing material web 12 with a print image that is the same for all printed copies of a print job. Each printed copy contains several printed pages. The printing units 11 of the printing form-based printing unit 10 are preferably designed as offset printing units. It is also possible that they are designed as gravure printing units.

After printing on the printing material web 12 in the region of the printing unit 10, the printing material web 12 can be deflected on a deflection roller 13 in such a way that the printing material web 12 is transported substantially horizontally following the deflection roller 13 so as to transfer the statically printed printing material web 12 to an inkjet roller. To supply printing device 14, which serves the dynamic printing of a printing material web surface of the printing material web 12 with a variable at least for a few printed copies print image. This makes it possible to customize the printed in the printing unit 10, static print image.

The inkjet printing device 14 is associated with a sensor 15, which automatically measures the visible, printed with a static print image substrate surface of the substrate 12, on the one hand depending on the measurement automatically a transverse offset for the inkjet printing device 14 is determined to the with the inkjet Printing device 14 to be printed print image seen transversely to the transport direction of the substrate web at the desired position on the substrate web 12 or a corresponding print page, and on the other hand depending on the measurement of the printing substrate 12 automatically a drive signal for the inkjet printing device 14 is determined in order to position the printing image to be printed with the inkjet printing device 14 in the transport direction of the printing material web at the desired position on the printing material web or the corresponding printing side.

Accordingly, the dynamic printing image to be printed by the inkjet printing device 14 in the transport direction of the printing material web 12 and transversely to the transport direction of the printing material web 12 can be positioned at a desired position on the printing material web 12 via the sensor 15.

The inkjet printing device is associated with an operating device 16 independent of a printing machine control system for providing control commands to the inkjet printing device 14 independently of the printing press control system. It includes according to Fig. 1 the operating device 16 a computer unit 17 and a data input and display unit 18, wherein the data input and display unit 18 is preferably designed as a touch screen on the one hand control data displayed and on the other hand control data can be entered.

The computer unit 17 generates control commands for the inkjet printing device 14 on the basis of the data entered via the data input and display unit 18.

Accordingly, the invention proposes a web-fed printing press wherein the inkjet printing device 14 integrated in the web press is self-sufficient on the control side and therefore does not require any interface with a press machine control system, in particular a control station of the web press. About the inkjet printing device 14 associated sensor 15, the position of the dynamic printing in the transport direction and transverse to the transport direction of the substrate is determined automatically and independently. Autonomous control commands for the inkjet printing device 14 can be provided via the operating device 16 which is independent of the printing machine control system. The only additional information that the inkjet printing device 14 requires for proper operation is the transport speed of the printing material web 12.

The sensor 14 can either automatically determine the transport speed of the printing material web 12, or a printing unit 10 positioned upstream of the inkjet printing device 14 provides the inkjet printing device 14 with the transport speed of the printing material 12. In the case in which the sensor 15 misses the same printed marks at a predetermined distance during the measurement of the printing material web 12, the transport speed of the printing material web 12 can be automatically determined by the sensor 15 from the distance between the marks and from the time between two consecutive marks , If the accuracy of this speed determination is not sufficient, it is possible to resort to a speed signal provided by the static printing unit 10.

For example, correction commands can be entered via the operating device 16 as control commands for the inkjet printing device 14 in order to correct the position of the dynamic printing of the printing substrate web 12 determined by the sensor 15 in the transport direction and transversely to the transport direction of the printing material web 12.

Furthermore, it is possible, via the operating device 16 as a control command, to input the desired position for the dynamic printing by the inkjet printing device 14 with respect to marks of the printing material web 12 to be measured. Furthermore, a start command or stop command for the inkjet printing device 14 can be provided via the operating device 16. Furthermore, maintenance and service functions can be called up via the operating device 16 for the inkjet printing device 14. In addition, status messages and error messages as well as operating instructions on the operating device 16 can be visualized.

In the case in which the web-fed printing press comprises a plurality of inkjet printing devices 14 with corresponding sensors 15, control commands can be provided for all inkjet printing devices 14 via a common operating device 16, whereby the inkjet printing device 14 can be selected via the operating device 16 the current control commands are to be provided.

With the inventive concept of a web-fed rotary printing press existing web-fed rotary presses whose press control systems are not designed for the integration of inkjet printing devices for dynamic printing of substrate webs but only for static printing thereof, can be retrofitted with little effort by inkjet printing devices, as on the separate control device the Providing control commands for the or each inkjet printing device can be made independently of the printing press control system. The same automatically and automatically determines the position for the dynamic printing of the printing material web via the sensor of the respective inkjet printing device in the transport direction and transversely to the transport direction of the printing material web. A still required speed signal on the transport speed of the substrate web is either automatically and automatically determined by the sensor or provided by a printing unit that serves the static printing of the printing material.

LIST OF REFERENCE NUMBERS

10

printing unit

11

printing unit

12

printing material

13

idler pulley

14

printing formless printing device / inkjet printing device

15

sensor

16

operating device

17

computer unit

18

Data input and display unit

Claims (3)

1. A reel-fed printing press with at least one print form-based printing unit (10) for statically printing at least one substrate web (12) with a print image that is static for print copies of a print order, and with at least one print form-less printing device (14) that is positioned downstream of the print form-based printing units (10) and upstream of a folder for dynamic inline printing at least one substrate web (12) with a print image that is variable for at least some print copies, in addition to the static printing of the same, wherein the or each print form-less printing device (14) is assigned an operating device (16) in order to make available control commands to the or each print form-less printing device (14) independently of a printing press control system, and wherein the print image to be printed with the print form-less printing device (14) in transport direction of the substrate web (12) is positioned in the desired position on the substrate web (12), wherein the or each print form-less printing device (14) is assigned a sensor (15) each, which automatically measures a statically printed substrate web (12) and dependent on the measurement of the substrate web (12) activates the respective print form-less printing unit (14) in order to position the dynamic print image to be printed with the print form-less printing device (14) in the desired position on the substrate web (12)in transport direction and/or transversely to the transport direction of the substrate web (12) and wherein the or each sensor (15) is a sensor (15) for detecting the visible substrate web surface printed with a static print image, characterized in that as control command the desired position of the print image printed by the print form-less printing device on the substrate web (12) can be input via the operating device (16).
2. The reel-fed printing press according to any one of the preceding claims, characterized in that via the operating device (16) maintenance commands can be input as control commands.
3. The reel-fed printing press according to any one of the preceding claims, characterized in that in addition to the control commands made available via the operating device (16) a transport speed of the substrate web (12) can be made available to the or each processing device (14) by an assembly of the reel-fed printing press, in particular by a print form-based printing unit.

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