JP2004306611A - Control device for printing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device which has a signal-connection with the memory section for a printing machine, especially a sheet offset printer, and enables the setting value of already-performed printing subjects to be stored as a form of data set in the memory while enabling the value for preliminarily setting the printing machine to be inputted as a form of data set via an input unit connected with the control device for the printing subject newly to be printed, then enabling the printing machine to be ramarkably improved for the control device used for setting the above values via the control device. <P>SOLUTION: A comparison section 4 is provided. The inputted value of the printing subject to be printed is made to be able to be compared with the one of the already-performed printing subject using the comparison section. Through the comparison, the above inputted data set is made to be able to be corrected or changed according to the criterion which can be previously determined. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The invention relates to a control unit for a printing device according to the preamble of claim 1.

  In order to perform a printing task, many settings relating to the printing press must be made. In the case of a multiplex sheet-fed offset printing press, for example, many such settings are made in the ink dispensing members in each printing device. These ink dispensing members must be adjusted to the required amount of ink per zone predetermined according to the subject to be printed. In addition, dampening agents must be adjusted accordingly. Not only in the paper feeding device but also in the paper discharging device, the device must be appropriately adjusted to the vertical and horizontal format of the sheet. Applicable devices are, for example, air blowing devices, sheet separating devices, alignment machines (Geradestosser), sheet speed reducers (Bogenbremsen) and the like. Finally, it is also necessary to adjust the printing cylinder or impression cylinder to the thickness of the material to be printed and to adjust the supply of air suction and air delivery of the sheet guide.

  Preliminary adjustments are made to achieve the required print quality as soon as possible and with only a small amount of print waste. That is, the above-described device can be remotely set to a predetermined value via the control device. In this case, the values for the ink pre-adjustment relating to the dosing member can be obtained from a pre-printing stage (pre-stage) or by scanning or inspecting a printing plate attached to each printing device. The setting according to the type is manually performed from an input device at a control unit or a control station for a printing press, and an air suction or air blowing device (sheet feeding device, sheet discharging device, sheet guide, or the like) adapted to a printing material. The setting of the (device) is performed by the printman based on experience values, or when the task is repeated again, the stored value is set. The more accurately the preliminary setting is made, the less corrections need to be made during printing, and accordingly the less wasteful printing occurs.

  In the case of a repetitive task (repeated task), that is, when the same print task is performed again on the same subject later, the setting that is used once and obtains the required print quality can be used again. . For this purpose, the control device of the printing press includes a memory (storage unit). In this memory, the settings of the appropriate print task are stored, and thereby the print task is stored in association with further values (plate height, print material type, instructions for printing problems). Is done. These values can be selected later and recalled for configuration.

  For example, a control example of the above-described printing press for performing the preliminary setting is shown in German Patent Application Publication No. 3410683 (Patent Document 1) and German Patent Application No. 400003834 (Patent Document 2). ing. EP-A-0440241 describes an ink pre-setting system for a printing press. In this specification, the preliminary setting data is taken in from the data in the preliminary printing stage.

  Until now, how to construct data that expresses one printing task, especially data that comes from the pre-printing stage (preliminary printing stage), and what format should be used to represent these data That standard has been developed. At this time, the definitions of these so-called job formats include preliminary setting of ink and dampening agent, input values of a mold, height of a task, types of printing materials, and the like.

When a new printing task is set, if the values that provide one data set are not all present, appropriate preliminary settings cannot be made for specific components of the printing press. For example, if an input value for a dampening agent is missing in one printing task, the printing press must run the printing machine and then apply the dampening agent based on experience and at the same time based on the judgment of the test sheet. . As a result, the number of printing failures of the sheet until the required print quality is obtained increases. This case corresponds to, for example, a case where only the thickness of the material to be printed is given and the paper quality is not given. As is well known, the paper quality or the type of paper also affects the setting of the dampening agent and other settings. The same applies to the other remaining presets.
German Patent Application No. 3410683 German Patent No. 40033834 European Patent Application No. 0401241

  It is therefore an object of the invention to extend the control device described in the preamble of the preamble of claim 1 and to achieve a significant improvement in the pre-setting of the printing press.

  This problem is solved by a configuration according to the characterizing portion of claim 1. Further features of the invention are given in the subclaims.

  According to the invention, the control device comprises a comparing unit, by means of which the values of the data set used for the preliminary setting and input through the input device and the already executed printing tasks held in the memory Can be compared with the values of the data set, and the value of the data set that is input and used for the preliminary setting can be modified / changed according to the result of the comparison. The pre-set values detected before the printing task to be newly performed are either made by hand, via the control station of the printing press, via a reading device or directly via a network. Can be entered after it has been obtained from the preliminary printing stage.

  According to a preferred embodiment of the invention, preset values that are not present or have not been entered can be supplemented from the most similar data set as far as possible according to criteria that can be provided in advance. When no pre-settings have been made for the setting of the dampening device of the offset printing press, the invention makes it possible for the ink dispensing element to be selected from a data set of previous printing tasks stored in a memory that has already been executed. Data sets whose settings are similar or identical can be detected by the comparing unit.

  By means of the comparison unit according to the invention, the preliminary setting is clearly improved, which leads to a reduction in the amount of printing waste during the preliminary run until the required print quality is achieved, and a corresponding reduction in the time. Is also brought about. Of particular advantage is the fact that the time from inception to processing of the task is often very long, and that the conditions in the print hole that change with it can be taken into account. By comparing the stored settings of the performed printing task with the current state of the machine in the print hole (actual pre-set values), the previous saved settings are saved until the press is ready. Old task values can be adapted to current machine conditions.

  An embodiment of the comparison criterion is a filter embodied in software in the comparison unit. This filter is parameterizable. That is, the comparison criterion can be modified in order to identify a printing task or a data set of the printing task that is as similar as possible. At this time, the degree of coincidence can be designated, and the degree of coincidence is used to correct a corrected / changed value of a printing task to be newly executed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The printing press 1 is connected to a control device 2. The control device 2 controls the dispensing device in the inking device in the printing device, the dampening device in the printing device, the sheet guide device in the printing device and between the printing devices, and the paper feeding device in the paper discharging device, and The sheet separating device in the paper receiving device is particularly controllable. Corresponding devices in the above-described components of the sheet-fed offset printing press are not shown, but they are well known.

  The control device 2 is connected to the memory 3 so that signals are connected thereto, and the setting of the print task that has already been executed is stored in the memory 3 in a data set format. Here, the data set organized and stored in the memory 3 contains all settings which were then associated with the printing task performed, as well as, in particular, the inks, wetness, etc. consumed or failed to print by the individual printing device. It contains additional information such as the addition of a printing agent, the basis weight of the material to be printed, and its quality and type.

  The control device 2 is further connected to a control station 5 (control unit) of the printing press 1 so that a signal is connected. Via this control station 5, it is possible to input preset values in the form of data sets. The input can be made by hand from a keyboard, from a data carrier (for example, a disk or a magnetic card), or directly from a pre-printing stage via a network (not shown).

  The control device 2 includes a comparison unit 4. The comparison unit can compare the value of the data set of the printing task to be newly transmitted from the control station 5 with the value of the data set stored in the memory 3 (storage unit). In this way, the printing task closest to the new printing task can be calculated in accordance with the matching criterion that can be set in advance. In this way, when the data set of the printing task to be newly performed has, for example, a blank with respect to a particular preset value, that is, when that value is not present, such a blank value From similar printing tasks that have already been performed.

FIG. 1 shows a printing press with a control device and a control station.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 ... Sheet-sheet offset printer 2 ... Control device 3 ... Memory (storage part)
4 Comparison section 5 Control station (control section)

Claims (4)

A control device for a printing press, in particular a sheet-fed offset printing press, connected in signal communication with a storage unit, wherein the set values of the already executed printing tasks are stored in the storage unit in the form of a data set. For printing tasks that have been stored and are to be newly printed, the values for the pre-setting of the printing press can be entered in the form of a data set via an input device connected to the control device, thus In a control device configured to set the value by the control device,
A comparison unit (4), wherein the input value of the print job to be printed can be compared with the value of the print job already executed by the comparison unit, and through this comparison, the input data set is: A control device characterized in that it can be modified or changed in accordance with a criterion that can be determined in advance. The control device according to claim 1,
The comparison unit (4) can calculate, from the data sets of the print tasks that have already been executed, a data set that maximally matches the data set of the print task to be printed based on a predetermined reference. A control device characterized by being configured as follows. In the control device according to claim 1 or 2,
The control device, characterized in that the comparison unit (4) is formed as a computer and comprises a programmable filter. The control device according to claim 3,
The control device, wherein the filter can be parameterized.

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