EP1842673A2 - Integrated quality regulation - Google Patents

Abstract

The method involves measuring quality measurement data of a printed sheet by an optical detection unit and measurements and force actions of machine units by detection units. The data of the measurement are provided to evaluation and control devices, and the settings of the operating conditions or movement sequences of a plate cylinder and/or a rubber printing blanket cylinder is changed by the control units based on the detection of the quality measurement data and the measurements and force actions of the machine units. An independent claim is also included for a device for arranging and controlling a printing job in a printing machine.

Description

The invention relates to a system for preparing and controlling print jobs. Furthermore, the invention relates to a method for preparing and controlling print jobs.

Printers usually have several printing presses, which proceed to the preparation and disposition of a new print job so that of a printer first manually printing machine-unspecific basic data of the new print job to be printed, such. B. the ink involved in printing, the print format, the substrate thickness or Bedruckstoffgrammatur and the type of printing material are set. Thereafter, for the new print job to be reprinted, the printer defines print engine specific and print job dependent default values for the print job with respect to a preselected print engine. These are, for example, printing unit occupation values, coating unit occupation values, fan blade values, inking unit values and dampening unit values. After the basic data and the default values have been determined, the new print job to be reprinted is preset with respect to the preselected print engine, and in preparation for the print job, the same still subject-dependent setting values, such. B. positions of Farbdosierelementen assigned. A preselected or prepared for a preselected printing job print job is assigned to the execution or disposition of the same a specific printing press, which can change in the disposition depending on the capacity of the printing presses of a printing press type of printing machine. In the latter case, at least the presetting values of the print job set according to the available data would then have to be changed manually by the printer. Accordingly, according to the practice, a plurality of print jobs are manually preset by a printer, wherein the preset values may need to be manually changed after the disposition. This is very expensive.

From the EP 1 466 734 A2 For example, to streamline the preparation of print jobs, it is already known to compare values of a newly executed print job with values of already executed print jobs in order to automate the preparation of the new print job based on this comparison, by resorting to the preparation of values of already executed print jobs. The EP 1 466 734 A2 However, it does not take into account the fact that the preset type and the preparation of a print job may change the type of press when it is scheduled.

Furthermore, from the DE 10 2005 012 913 A1 Printing presses with at least one adjustable by an actuator machine element has become known. There, printing machines are described which have at least one adjustable by an actuator machine element. The setting of this machine element is said to affect the quality of a print executed by the printing press. For this purpose, an optical detection device detects its quality by means of a sensor directed at the surface of the pressure and transmits data to a control device. This is connected to the actuator of the machine element and this can minimize the difference between the setpoint and the actual value as a function of a nominal / actual difference between a predetermined and a measured quality of the pressure. The regulation is based on the fact that the quality of the print is comprehensively recorded by the optical detection device and its data is evaluated in terms of disturbing influences on the quality of the printing. For this purpose, in the context of print quality control, among other things, the application of tempering devices, diagonally adjustable form cylinders, adjustments of the tack value of printing inks, changes of register mark intervals as well as settings of roller contact forces and ink dosing devices will be discussed in more detail.

Furthermore, it is known to use so-called sheet-fed inspection systems in printing presses. In this case, by means of an image recording device, data of a Obtained pressure within a printing machine and compared with determined by a Gutdruck data. When errors are detected, printed sheets or benefits can be marked during the production process and / or rejected from the production process or downstream processing processes.

Furthermore, it is known to optimize print quality during printing by internal and external quality detection systems which take into account individual markings on the sheet (e.g., registration marks), measuring fields (e.g., print control strips), and / or the entire print image. These systems are coupled with evaluation and control devices, which in turn are connected to the control of the printing press. In the evaluation and control device a target template is deposited, with a comparison with the printed image can be performed. Furthermore, there are known printing difficulties (e.g., run-flat patterns) which enable recognition of certain quality disturbances. By set actual comparison, when an allowable deviation and detection, a certain quality disturbance on the control device is exceeded, an actuating element which acts on specific machine parts of the modules, adjusted such that the actual value is transferred to the desired range. The positions of the control elements for a good sheet can be stored and thus used for a repeat job.

Before the start of printing, the control elements are already preset on the basis of precursor data for the printed image or optimized with the aid of a control console computer, or in the case of repeat jobs, their last stored position is set again.

In the current state of the art must first be recognized when the known to be presupposed printing difficulties, the error, which is usually visually, then the press must be stopped and then the machine parts are manually or on the control console to adjust, so for example, the roll over Adjusting screws or register adjustment over the machine control station with registration errors. If necessary, these processes must even be repeated several times. The set-up times therefore increase and additional start-up waste arises.

On this basis, the present invention is based on the problem to provide a novel system for preparing and controlling print jobs and a corresponding method for preparing and controlling print jobs.

Printing press with positioning elements with which various printing machine components influencing the print quality can be adjusted. The control elements are automatically adjusted via a control device. The signals required for this are generated from an optical detection system with associated evaluation unit. The optical detection system is installed on an external measuring table, whereby markings (e.g., registration marks), measuring fields (e.g., control strips) and the complete signature are detectable. Evaluation unit and control device are connected to each other or part of a controller (e.g., in the control room).

With the adjustment and correction options described, the printing difficulties are minimized by presetting even before the start of printing and reduced or even eliminated during the printing process, without requiring manual intervention on the printing press in addition to the acquisition process for the measured values on the printing sheet. However, the acquisition of measured values on the printed sheet can also be done inline by measuring during the printing process in the printing press. For this purpose, so-called inline densitometers or inspection systems are known. This results in a significant reduction of machine downtime and thus improved productivity, as well as a reduction of waste accumulation.

Because monitoring the print quality by taking pictures of the printed sheets does not directly take into account the behavior of the press during operation It may be useful to set the detected pressure disturbances in relation to changes in the operating behavior of machine elements.

It is therefore provided according to the invention to take into account changes in the kinematic range of the printing units. It is known that inking rollers, dampening rollers or blankets (blanket) by the action of printing ink, dampening solution and detergent change in shape or dimension, since the rubber materials used swell or shrink. The consequence is that changing the diameter also changes the contact points or the contact strips and leads to effects on the print quality. Therefore, in combination with the already described methods and devices, a monitoring of the dimensions of said machine elements can be provided in order to control actuators which interact with these machine elements.

Advantageously, an inline detection of measured values such as roller or cylinder diameter takes place. With the aid of the measured values, an automated or semi-automatic adjustment of the optimal operating conditions can then take place. Here, the side or contact strips between rollers or rollers and the blanket / blanket cylinder are adjusted under all external operating conditions. In conjunction with this, a temperature compensation can be made.

In a preferred manner, control strategies are also developed in which control signals from the image evaluation are compared with those from the kinematic monitoring.

The invention will be explained in more detail with reference to drawings.

Figur 1

ein Funktionsschema in der Art eines Blockschaltbildes und

Figur 2

ein Funktionsschema einer Regeleinrichtung.

Show here

FIG. 1

a functional diagram in the manner of a block diagram and

FIG. 2

a functional diagram of a control device.

The presentation is based on an offset printing press, which usually contains several printing units. Each printing unit is provided with an inking unit and possibly a dampening unit. Each inking unit includes an ink fountain with a Farbduktorwalze and Farbdosierelementen, usually a lifting roller or a film roll, a variety of inking rollers and distributor rollers, and inking rollers. There are also inking with so-called anilox rolls, possibly built as short inking on known. Furthermore contains - if available - the dampening unit a Feuchtduktorwalze, dampening rollers and at least one dampening roller. The inking and dampening rollers are associated with a plate cylinder carrying a printing plate. The plate cylinder is associated with a blanket or blanket cylinder which transfers a color image from the printing plate to a signature held on an impression cylinder.

The printed sheet passes through all the printing units and records the different partial images of a printed image in different colors.

Furthermore, it is also possible to provide drying devices for one or more printing units.

In the functional diagram according to FIG. 1, pre-stage data can be supplied via an evaluation and control device to adjusting elements present in the printing press, which serve in machine components or units for influencing process steps such as ink dosing, dampening, drying or the like. By means of the evaluation and control device, data of an optical detection unit recorded by a good or printed sheet can furthermore be fed to the production process by means of the adjusting elements.

1. a) Voreinstellung am Beginn eines Druckauftrages
   Aus Vorstufendaten zu einzelnen Farbauszügen eines mehrfarbigen Druckbildes werden vielfältig bereits übliche Voreinstellungen z. B. von Farbdosierelementen, der Geschwindigkeit eines Farbduktormotors und einer Heberanlagezeit an einer Farbduktorwalze, die so genannte Heberstreifenbreite, vorgenommen. Zusätzlich können sujetabhängig die so genannte Beistellung von einzelnen Farb- und Feuchtauftragwalzen sowohl an eine Druckplatte als auch an eine Reiberwalze und eine Feuchtduktorwalze angepasst werden. Im Bedarfsfall können einzelne der Walzen des Farb- und/oder Feuchtwerkes auch ganz abgestellt werden.
   Des Weiteren kann eine Farbflussumschaltung im Farbwerk im Bedarfsfall automatisch aktiviert werden. Hierbei ist es möglich eine so genannte vorderlastige Einstellung bei schablonieranfälligen Druckformen zu wählen, wobei die Druckfarbe hauptsächlich über die ersten Farbauftragwalzen auf die Druckplatte am Plattenzylinder aufgetragen wird.
   Zusätzlich werden auch Parameter der Verreibung, nämlich ein so genannte Verreibungshub, ein Verreibungseinsatz und eine Changierung der Farbauftragwalzen sujetabhängig voreingestellt. Die Verreibung kann im Bedarfsfall auch abgestellt werden.
   Eine weitere Voreinstellgröße mit Auswirkung auf die Färbung ist der so genannte Hebertakt, der angibt, wie oft pro Maschinenumdrehung die Heberwalze an die Farbduktorwalze zur Farbaufnahme angelegt wird. Auf der Basis der Vorstufendaten wird automatisch eine Standard-Voreinstellart oder spezifische Einstellung für geringe Farbverbräuche bei geringen Flächendeckungen auf der Druckplatte eingestellt.
2. b) Optimierung während des Druckprozesses
   In der Auswerteeinheit ist eine Vorlage des Druckbildes aus Daten der Druckvorstufe (theoretischer Gutbogen) z.B. als berechneter, virtuell optimierter Druckbogen oder ein realer eingescannter Gutbogen gespeichert. Diese Daten dienen als Referenz für die im Folgenden zu erfassenden aktuell hergestellten Druckbogen. Hierbei sind die im Folgenden genannten Druckschwierigkeiten messtechnisch erfassbar, die in einem Druckbild erkennbar und über Stellelemente an Maschinenbauteilen während des Druckens beeinflussbar sind:
   • Abwicklungsstreifen (aus der Geometrie der Druckwerke resultierende Markierungen im Farbbild),
   • Streifen infolge mechanischer Stöße,
   • Kanalstreifen (hervorgerufen durch Kanaldurchgang der Feuchtauftragwalze, die sich dabei stärker mit Wasser auflädt),
   • Cordstreifen (aus der Feuchtung resultierende Markierungen),
   • Schablonieren (geisterhafte Bildwiederholungen),
   • Butzen (Verschmutzungen aus dem Druckprozess),
   • Unter- oder Überfärbung,
   • geschwindigkeitsabhängige Einflüsse (Kompensationen),
   • Störungen der Walzenabwicklung oder der Breite der Beistellstreifen zwischen Walzen durch Schrumpfen oder Quellen der Walzenbezüge und
   • Schmieren (bei zu geringer Feuchtung).

Ultimately, this will affect the print quality of the press sheets. This closes the control loop.

1. a) Presetting at the beginning of a print job
   From precursor data to individual color separations of a multicolored print image be manifold already customary settings z. As of Farbdosierelementen, the speed of a Farbduktormotors and a Heberanlagezeit on a Farbduktorwalze, the so-called Heberstreifenbreite made. In addition, the so-called provision of individual inking and dampening rollers can be adapted to a printing plate as well as to a distributor roller and a dampening roller depending on the type of product. If necessary, individual of the rollers of the inking and / or dampening unit can also be completely turned off.
   Furthermore, a color flow switch in the inking unit can be activated automatically if necessary. In this case, it is possible to select a so-called front-heavy adjustment in stencil-prone printing forms, the ink being applied mainly to the printing plate on the plate cylinder via the first inking rollers.
   In addition, parameters of the trituration, namely a so-called Verreibungshub, a trituration and a traversing of the inking rollers are subject to sujetabhängig. The trituration can also be turned off if necessary.
   Another presetting factor with effect on the color is the so-called lifter stroke, which indicates how often per revolution the machine is rotated to apply the squeegee roller to the ink fountain roller for ink absorption. On the basis of the precursor data, a standard preset type or specific setting for low color consumption is automatically set with low areal coverage on the printing plate.
2. b) Optimization during the printing process
   In the evaluation unit a template of the print image from data of the prepress (theoretical goodwill) eg as calculated, virtually optimized printed sheet or a real scanned good sheet is stored. These data serve as a reference for the currently produced printed sheets to be recorded below. In this case, the printing difficulties mentioned below can be detected metrologically, which can be recognized in a printed image and can be influenced by means of adjusting elements on machine components during printing:
   • Development strips (markings resulting from the geometry of the printing units in color image),
   • Streaks due to mechanical impact,
   • Duct strip (caused by channel passage of the dampening roller, which is more heavily charged with water),
   • Cord strips (marks resulting from the dampening),
   • Stenciling (ghostly image repetitions),
   • Slugs (contamination from the printing process),
   • Under- or over-staining,
   • speed-dependent influences (compensations),
   • Disruption of the roll handling or the width of the Beistellstreifen between rolls by shrinking or swelling of the roll covers and
   • Lubricate (if moisture is too low).

The mentioned printing difficulties can all be detected by means of optical density measurement or by means of an arc inspection system. The mentioned printing difficulties are definable deviations from the specified target values (optical density, brightness) in the printed image (too much or too little). Other recognizable and influenceable deviations are registration errors (errors in the position of partial images on the printed sheet) and changes in printing length (deviation of the length of a printed image caused by the printing process).

In the context of dimensional or operational disturbances, such as speed influences, roll development disturbances or changes of the additional strips, the additional acquisition of data at the printing press may be necessary. In particular, measuring devices can be provided for machine speed, roll diameter, auxiliary printing or auxiliary strips.

A difficult problem is represented by stripes transverse to the sheet travel direction. For their unambiguous assignment, stripe patterns, which can be caused by the color, damp and printing unit geometry, must be deposited in the evaluation unit, whereby it should be taken into account that so-called development strips and stripes due to mechanical shocks always occur at the same distance from the sheet leading edge. In the case of a strip once recognized, the provision values of the individual applicator rollers for the printing plate and / or for a distributor roller can be adjusted by motor. Likewise, individual application rollers can be completely turned off the plate. Possibly. also intermediate roll, which serve the forwarding of the ink stream, and also so-called rider rolls, which serve the storage and homogenization of the ink stream, if they have an influence on the banding, are adjusted.

If a channel strip is detected, the amount of dampening solution will be adjusted by adapting the speed of the dampening roller or by providing the wet metering roller to the dampening roller.

The adjustment of the parameters is carried out until the setpoint values are kept stable. Alternatively, an indication of the malfunction on a machine control station is possible. Here, the operator can be given specifications for the manual adjustment of the rolls for printing optimization.

The so-called stenciling can be detected by means of typical density deviations. When stenciling is recognized, the relevant parameters of the transfer are preferably adapted, namely the rubbing stroke, the trituration insert or the traversing of the inking rollers. Likewise, the inking unit can be switched on a Fabflussumschaltung in a switching state front-heavy.

The so-called cord strips can be identified by significant density differences in the printed image and the distances between two maximum and / or minimum values transversely to the sheet travel direction. By adjusting the speed of the dampening duct roller and / or the dampening solution temperature, the cord strips are eliminated or minimized.

In a recognized so-called slug depending on its location, a relative speed of the dampening roller to the plate cylinder is activated for a limited period of time when the slug is in the middle to back of the printing plate or printed image. Likewise, an engageable between inking and dampening rollers bridge roller can be switched to "integrated". Since it then also fount solution promotes inking, so that thereby the dampening solution in the inking does not increase unacceptably, a Farbwerkblasvorrichtung be activated to remove excess dampening solution from the inking unit. It is also known to use so-called Butzen catcher in the form of engageable with rollers or the pressure plate scraper blades automatically by means of a coordinate of contamination.

With uniform under- or over-color in the printed image on the sheet in one or more printing units instead of adjusting the Farbdosierelemente increase or decrease the Farbduktorgeschwindigkeit and thus the Heberstreifenbreite thus evenly increased ink supply to achieve the desired target state.

In so-called lubrication, pressure-free surfaces, i. on printed image-free areas, the printing plate ink on. This process is usually due to a too low dampening solution supply. When the greasing is detected, the amount of fountain solution is increased by making a higher ink duct speed or increasing the dosing gap in the dampening unit by adjusting the dosing roller. In one-sided position of the greasing in relation to the printed image, a so-called entanglement of the wet metering roller is adjusted by their inclination is changed to the adjacent dampening roller.

Further recognizable and influenceable printing difficulties are register errors. Registration errors can be identified by corresponding markings on the printing plate or on the printed sheet and their deviations. If a deviation is detected on a measuring table in the offline measuring procedure or can also be detected inline within the printing press, the corresponding register settings, namely a circumferential, lateral and / or oblique register are automatically activated. In this case, a relative adjustment of the printing plate or of the plate cylinder to the printing sheet or a relative adjustment of the printing sheet to the printing unit is usually carried out.

A detected deviation of the printing length, e.g. because a print sheet is extended by fountain solution absorption can be corrected by a drive correction on the plate cylinder. This is advantageously done by means of a separate - e.g. by means of its own drive motor - driven plate cylinder possible, which allows the change of the peripheral speed of the plate cylinder relative to the machine speed.

For continuous monitoring of the printing process, press sheets are continuously recorded during printing and adjustment values are corrected if necessary.

Monitoring the print quality by taking pictures of the printed sheets does not take into account the behavior of the press during operation and over a longer period of operation. Therefore, it makes sense to set the pressure disturbances determined according to the method described in relation to changes resulting from the operating behavior of the printing press, such as dimensional, force or temperature fluctuations of machine elements.

It is therefore intended to take into account pressure disturbances resulting from changes in the kinematic range of the printing units. It is known that inking rollers, dampening rollers or blankets (blanket) by the action of printing ink, dampening solution and detergent, with which they come in contact inevitably change in shape or dimensions. The rubber materials used here as standard swell or shrink together. The consequence is that changing the diameter and the contact points or the contact strip. This in turn has an impact on the printing quality of the print. Therefore In combination with the already described methods and devices, a monitoring of the dimensions of said machine elements can be provided in order to actuate actuating elements which interact with these machine elements.

The described disorders can also occur in connection with temperature fluctuations within the printing press. Although tempering devices are already known for their control. However, the effects can also be addressed by means of the aforementioned monitoring of machine elements. The measures described below are therefore intended inter alia also relate to the combating of the function of the printing units disturbing temperature gradients.

Advantageously, an inline detection of measured values such as roll diameter or cylinder diameter takes place. With the aid of the measured values, an automated or semi-automatic adjustment of the optimal operating conditions can then take place. Here, the side or contact strips between rollers or rollers and the blanket / blanket cylinder are adjusted under all external operating conditions. In conjunction with this, a temperature compensation can be made.

The design of the device is designed to be set directly via actuators or via a visual display on the control console to provide instructions to the operator on the press about the optimum setting, e.g. in the form of correction values.

The detection of a change in diameters of rollers or the rubber / blanket cylinder can be done groping or non-contact, for example by laser measurement, by ultrasonic measurement or by magnetic, inductive, capacitive or infrared sensors executable measuring method. For this purpose, known methods and measuring devices are used, which are suitable for scanning the corresponding surfaces of rollers or rubber / blanket cylinder.

FIG. 2 shows a block diagram of this method part. A measuring device is indicated by arrows associated with a roller. The measuring device supplies measured values for the current diameter of a roller constantly or at intervals during machine operation. This may also be the rubber / blanket cylinder as previously stated. The measured values are forwarded to a control device. The control device in turn is also connected to the adjusting elements for adjusting the rollers. Thus, it is always possible to carry out a comparison between the roller diameters assumed in connection with the set values of the roller adjustment with the currently measured actual values. With increasing roll diameter by swelling would give a greater Walzenbeistellung without changing the roll adjustment, which leads to poorer print quality. Therefore, the control device can correct this error by means of appropriate control signals to the actuators of the rollers by the roller distance is increased accordingly.

As the rolls shrink, the roll spacing decreases accordingly.

The measuring method can be simplified by measuring only one roller. Since all rolls undergo the same treatment, it can be assumed with great certainty that the change behavior is the same or very similar. Therefore, it can be concluded from the change of a roller on the change behavior of other rollers used in the same function. Here, the diameter ratios are taken into account.

The measurement of an inking roller can thus be used by means of a corresponding calculation model for determining the diameter of further inking rollers or even the dampening roller (s). As a result, only one measuring device in the inking unit or dampening unit is necessary.

The above is also applicable to the rubber / blanket cylinder. Its interaction with the plate cylinder and the counter-pressure cylinder can be controlled by means of a Druckbeistellantriebes. The control device is hereby used in the same way as in the context of Color / dampening rollers was described in detail. Thus, a printing quality disturbing development of Druckbeistellung between rubber / blanket cylinder and plate or impression cylinder during the printing process is avoidable.

Another possibility for avoiding the print quality of disturbing effects is that the forces acting between machine elements on the processual setting of the machine elements is closed to each other. For this purpose, forces in roller bearings, cylinder bearings or in bearer ring contacts can be detected. From the development of the measured forces can in turn be concluded on changes in the contact strip width. Rising forces are therefore to be reduced, and declining forces have to be corrected. Corresponding correction values for maintaining the initial state are therefore determined and introduced into the corresponding actuating means. Likewise, the correction values can be displayed so that the operator can make the corrections.

Thus, by means of the measures described, further disturbances of the print quality due to unintentional changes of contact strip widths (auxiliary strips) can be detected and eliminated.

According to FIG. 2, for example, the device for printing image monitoring according to FIG. 1 can now also be included in the control process. This avoids that resulting from the print image evaluation resulting control signals superimpose in addition in a worsening manner with the control signals from the roll or rubber / blanket cylinder monitoring. The control device according to FIG. 2 can therefore compare the control signals proposed from the print image monitoring with those which have been obtained and suggested by the diameter or force monitoring on rollers or rubber / blanket cylinders. For this purpose, one or a set of control strategies is stored in the control device, which take into account how the print quality can be influenced from the respective determined values.

• Wenn beide Strategien zur Verstellung konsistent sind kann die Verstellung vorgenommen werden.
• Wenn beide Strategien zur Verstellung die gleiche Tendenz aufweisen, aber zu unterschiedlichen Stellwerten führen, kann ein Mittelwert aus beiden Stellsignalen gebildet werden.
• Wenn beide Strategien zur Verstellung sich widersprechen, kann eine zu bevorzugende Strategie ausgewählt oder für die aus der Druckbildbewertung gefundene Strategie zur Verstellung eine alternative Strategie gesucht werden.
• Wenn aus einer oder beiden Strategien zur Verstellung Stellsignale au-ßerhalb eines Stellbereiches vorgegeben werden oder wenn keine zureichende Strategie zur Verstellung ermittelbar ist, können Warnungen an den Bediener ausgegeben werden, um die Druckmaschine, deren Einstellungen und die Funktionsfähigkeit der beteiligten Maschinenelemente zu überprüfen.

This can be done as follows:

• If both strategies for adjustment are consistent, the adjustment can be made.
• If both strategies for the adjustment have the same tendency but lead to different control values, an average of both control signals can be formed.
• If both strategies of adjustment contradict one another, a preferable strategy can be selected or an alternative strategy can be sought for the strategy for adjustment found from the print image evaluation.
• If control signals outside of an adjustment range are specified from one or both adjustment strategies or if an insufficient adjustment strategy can not be determined, warnings can be issued to the operator to check the press, its settings and the functionality of the involved machine elements.

• ausgebildet sein.

The described methods can be used on sheetfed and web presses. They are suitable for both wet offset and waterless offset printing. The inking units can conventionally be equipped with a plurality of inking rollers or as a flexographic unit - as a chamber doctor blade with anilox roller - or as an anilox unit - chamber doctor blade, anilox roller and one or more inking rollers

• be educated.

Claims (49)

A method of preparing and controlling print jobs in a printing press having a printing unit provided with an inking unit comprising a fountain pen, ink metering devices, a ink ductor and a squeegee roller, inking, rubbing and inking rollers, a dampening unit comprising a dampening roller, a metering roller and dampening rollers, a plate cylinder carrying a printing plate, a blanket / blanket cylinder and registering means,
characterized,
in that by means of an optical detection unit, quality measured values of printed sheets and / or dimensions and / or force effects of the printing quality determining machine elements are measured by one or more further recording units, that the data of the measurements are fed to one or more evaluation and control devices and that by means of the evaluation and control equipment settings of operating conditions or movements of inking and / or dampening rollers and / or a plate cylinder and / or a rubber / blanket cylinder is variable depending on the detection of quality measurements on a sheet and / or measurements of dimensions or force effects on machine elements. Method according to claim 1,
characterized,
that for correcting errors after the detection of strips transverse to the direction of sheet travel on a sheet in the evaluation unit stripe patterns are deposited, which are caused by conditions of color, dampening and printing unit geometry, that the stripe patterns are compared with the quality measurements and that by means of the evaluation - and control device Beistellungswerte of individual applicator rollers to the pressure plate and / or be adjusted to a distributor roller motor or individual application rollers are parked by the pressure plate or intermediate rollers or rider rollers are adjusted. Method according to claim 1,
characterized,
that for correcting errors after the detection of changes in diameter, changes in shape or changes in force effects on inking or dampening rollers in the evaluation setpoint values for diameter and / or shape and / or axial spacing and / or force effects of or to rolls are deposited by conditions of Color, dampening and printing unit geometry are determined that setpoints are compared with the measured values and that by means of the evaluation and control device Beistellungswerte of individual inking or dampening rollers to each other and / or application rollers to the printing plate or to the plate cylinder and / or to a distributor roller be adjusted by motor or individual applicator rollers of the pressure plate or the plate cylinder are turned off or intermediate rollers or rider rollers are adjusted. Method according to claim 1,
characterized,
in that for correcting errors after the detection of changes in diameter, changes in shape or changes of force effects of a rubber / blanket cylinder in the evaluation unit, set values for diameter and / or shape and / or axial distance and / or force effects of the rubber / blanket cylinder for the plate cylinder be deposited, which are determined by conditions of color, dampening and printing unit geometry, that setpoints are compared with the measured values and that by means of the evaluation and control device Beistellungswerte the rubber / blanket cylinder to the printing plate or the plate cylinder are adjusted. Method according to claim 2, characterized in that
in order to correct errors in the detection of channel strips, the amount of dampening solution can be adjusted by adjusting the speed of the dampening roller or the provision of a wet metering roller to the dampening roller. Method according to claim 1,
characterized,
that for correcting errors an evaluation of the measured data with respect to typical density deviations occurs and that in such a detection of stenciling on one or more distributor rollers preferably the Verreibungshub and / or the trituration insert and / or switching on or off the traversing of individual or all inking rollers or that the inking unit is switched by means of a Fabflussumschaltung in a switching state front-heavy. Method according to claim 1,
characterized,
that for the correction of errors, an evaluation of the measured data with regard to significant differences in density in the printed image and intervals of two maximum and / or minimum values transversely to the sheet travel direction and in such a detection of Cordstreifen an adjustment of the speed of the dampening roller and / or the dampening solution temperature and / or an adaptation or activation or deactivation of a differential speed between the dampening form roller and the plate cylinder takes place. Method according to claim 1,
characterized,
that for the correction of errors an evaluation of the measured data in terms Butzen takes place and that each position of the / the slug, a relative speed of the dampening roller to the plate cylinder is activated for a limited period of time or an engageable between inking and dampening rollers bridge roller is switched to integrated, where appropriate, a device for eliminating excess dampening solution is switched from the inking unit , or that a scraping device is employed in accordance with the position data of the slugs for a short time on a roller or the plate cylinder. Method according to claim 1,
characterized,
that for the correction of errors, an evaluation of the measured data with respect to a uniform under- or over-coloring in the printed image in one or more printing units and that a uniform adjustment of the Farbdosierelemente or an increase or decrease in the Farbduktorgeschwindigkeit and / or the Heberstreifenbreite takes place, wherein the change to the selection a presettable characteristic curve for compensating influences from the printing speed can take place. Method according to claim 1,
characterized,
that for the correction of errors, an evaluation of the measured data with respect to a greasing by detecting ink in the area pressure-free surfaces and then the amount of fountain solution is increased by a higher humidor speed, wherein for changing the selection of a presettable characteristic to compensate for influences from the printing speed can, or an enlargement of the dosing in the dampening unit is made by adjusting a metering roller, wherein in one-sided position of the error with respect to the print image, an entanglement of the wet metering roller is adjusted. Method according to claim 1,
characterized,
that for the correction of errors, an evaluation of the measured data with respect to registration errors by measuring corresponding markings on the printing plate or on the sheet and their comparison to a desired position is carried out and automatically corresponding settings of a circumferential, lateral and / or oblique register. Method according to claim 11,
characterized,
in that a correction is made by adjusting the position of a sheet transport drum to correct errors. Method according to claim 1,
characterized,
that for the correction of errors an evaluation of the measured data with respect to a deviation of the printing length of the printed image takes place and that thereupon a drive correction to the plate cylinder takes place by a change of the peripheral speed of the plate cylinder is made relative to the machine speed. Method according to claim 1,
characterized,
in that, for the correction of errors, an evaluation of the measured data with respect to a deviation from staining disturbances and / or a deviation of the printing length of the printed image takes place by changing the provision between a plate and a blanket / blanket cylinder. Method according to claim 3,
characterized,
that measurement data of a machine element are used to determine a change of one or more machine elements with regard to shape, type, material, operating conditions, temperature behavior or installation location. Method according to claims 1 to 15,
characterized,
in that combined actuating and / or regulating strategies are stored in order to correct errors in the printing quality in the open-loop and closed-loop control system, such that if a proposed setting / control strategy from the image evaluation and a proposed setting / control strategy are consistent from the measurement of machine elements are, the proposed adjustment is made. Method according to claims 1 to 15,
characterized,
that combined control and / or regulating strategies are stored for correcting errors in the printing quality in the open-loop and closed-loop control system such that, if a proposed control strategy from the image analysis and a proposed control strategy from the measurement of machine elements have the same tendency, but lead to different control values, an average of two control signals is formed. Method according to claims 1 to 15,
characterized,
in that combined actuating and / or regulating strategies are stored in order to correct errors in the print quality in the open-and-closed-loop control system, such that when a proposed setting / control strategy from the image evaluation and a proposed setting / control strategy from the measurement of machine elements are contradictory, a preferred strategy is selected or an alternative strategy is sought for the strategy found from the print image evaluation. Method according to claims 1 to 15,
characterized,
in that combined actuating and / or control strategies are stored in the control and regulating device for correcting errors in terms of print quality, such that when a proposed control strategy from the image analysis and a proposed control strategy from the measurement of machine elements control signals outside of a control range or if no adequate control strategy can be determined, warning messages are issued to check the machine and its settings. Apparatus for carrying out a method for preparing and controlling printing jobs in a printing press according to claim 1, comprising a printing unit having a dampening unit comprising an inking unit comprising a paint box, ink metering devices, a ink ductor and a squeegee roller, inking, rubbing and inking rollers comprising a dampening roller, a metering roller and dampening rollers, a plate cylinder carrying a printing plate, a blanket / blanket cylinder and register means;
characterized,
that an evaluation and control device is provided, which is connected to a device for recording and storing prestage data, with an optical detection unit and with actuators of the printing press, such that by means of the Vorstufendaten and by means of the optical detection unit of a good and / or an adjustment of the adjusting elements taken from the production sheet such that machine units provided with the adjusting elements are changed in their function of influencing the printing quality of printed sheets. Device according to claim 20,
characterized,
that in the inking unit a drive of a ductor roller is provided, which is controllable in dependence of measured values by means of the evaluation and control device with respect to a change in its speed. Device according to claims 20 and 21,
characterized,
that in the inking unit a drive of a lifting roller is provided, which is controllable in dependence on measured values by means of the evaluation and control device with respect to a change in its investment time on the ductor roller. Device according to claim 20,
characterized,
in that one or more drives of distributor rollers are provided in the inking unit, which can be controlled as a function of measured values by means of the evaluation and control device with respect to a change of the Verreibungshubes and / or the Verreibstaktes and / or a Verrreibungseinsatzpunktes and / or Verreibungsofsefinrinkels the machine cycle. Device according to claim 20,
characterized,
in that one or more drives of distributor rollers are provided in the inking unit, which are in communication with inking rollers and can be controlled as a function of measured values by means of the evaluation and control device with respect to a change in a Verreibungsoffszwinkels between the respective Verreibungsbewegungen to each other. Device according to claim 20,
characterized,
in that one or more drives are provided in the inking unit in conjunction with inking rollers, which can be controlled as a function of measured values by means of the evaluation and control device with regard to a switching on or off of a Verreibungsbewegung. Device according to claim 20,
characterized,
in that one or more drives are provided in the inking unit in conjunction with inking rollers which can be actuated by the plate cylinder as a function of measured values by means of the evaluation and control device with regard to an activation or deactivation of the inking rollers. Device according to claim 20,
characterized,
in that drives are provided in the inking unit in connection with inking and inking rollers, which can be controlled as a function of measured values by means of the evaluation and control device with regard to providing the inking unit to distributor rollers and the inking rollers to the plate cylinder. Device according to claim 20,
characterized,
in that one or more drives are provided in the inking unit in connection with inking rollers which, depending on measured values, can be actuated by means of the evaluation and control device with respect to an on and off of the inking rollers to further inking rollers. Device according to claim 20,
characterized,
in that one or more drives in conjunction with inking rollers are provided in the inking unit, which can be controlled to switch an inking unit from a normal operating state into a symmetrical or front-loaded inking unit. Device according to claim 20,
characterized,
that a drive of a ductor roller is provided in the dampening unit, which can be controlled as a function of measured values by means of the evaluation and control device with respect to a change in its speed. Device according to claim 20,
characterized,
that the dampening unit has a drive of the metering roller, which is dependent on measured values by means of the evaluation and control device with regard to the provision and / or entanglement with neighboring driven rollers. Device according to claim 20,
characterized,
in that a drive of a dampening form roller is provided in the dampening unit, which can be controlled as a function of measured values by means of the evaluation and control device with respect to a change in its speed relative to the speed of the plate cylinder. Device according to claim 20,
characterized,
that in the inking unit and / or dampening unit a drive of a bridge roller is provided, which is controllable in dependence of measured values by means of the evaluation and control device with respect to a displacement for establishing a connection between inking and dampening unit. Device according to claim 33,
characterized,
that the inking unit comprises means for dampening eliminate or - comprises reduction, which is controllable with regard to dampening solution removal from the inking system as a function of measured values by means of the evaluation and control device and in connection with the circuit of the bridge roller. Device according to claim 20,
characterized,
that the plate cylinder drives for adjusting the circumferential and / or lateral and / or angular register which are relatively controlled for rubber / blanket cylinder or to the printing sheet as a function of measured values by means of the evaluation and control device for the displacement of the plate cylinder. Device according to claim 20,
characterized,
that the plate cylinder has a drive for adjusting the peripheral speed of / can be controlled depending on measured values by means of the evaluation and control device with respect to the rotational speed of the plate cylinder relative to the rubber / blanket cylinder or to the printing sheet. Apparatus according to claim 36,
characterized,
that the plate cylinder is assigned its own drive motor. Apparatus for carrying out a method for preparing and controlling printing jobs in a printing press according to claim 1, comprising a printing unit having a dampening unit comprising an inking unit comprising a paint box, ink metering devices, a ink ductor and a squeegee roller, inking, rubbing and inking rollers comprising a dampening roller, a metering roller and dampening rollers, a plate cylinder carrying a printing plate, a blanket / blanket cylinder and register means;
characterized,
that an evaluation and control device is provided, which is provided with a device for detecting and storing adjustment data, with one or more measuring devices for non-contact and / or touching detection of diameters and / or surface shapes of machine elements and / or force effects on or between machine elements and is connected to control elements of the printing press, such that by means of the adjustment data and the measurement data obtained by the / the adjustment of the adjusting elements such that provided with the adjusting elements machine elements or units are changed in their function to influence the print quality of printed sheets. Device according to claim 38,
characterized,
in that one or more drives are provided in the inking unit in conjunction with inking rollers which can be actuated by the plate cylinder as a function of measured values by means of the evaluation and control device with regard to an activation or deactivation of the inking rollers. Device according to claim 38,
characterized,
that in the inking unit drives are provided in connection with inking and inking rollers, which are controllable in dependence on measured values by means of the evaluation and control device with respect to a supply of inking rollers with each other, the inking unit to distributor rollers and / or the inking rollers to the plate cylinder. Device according to claim 38,
characterized,
in that one or more drives are provided in the inking unit in connection with inking rollers which, depending on measured values, can be actuated by means of the evaluation and control device with respect to an on and off of the inking rollers to further inking rollers. Device according to claim 38,
characterized,
in that one or more drives are provided in connection with inking rollers in the inking unit, which can be controlled to switch the inking unit in a symmetrical or a front-heavy inking unit. Device according to claim 38,
characterized,
that the dampening unit has a drive of the metering roller, which is dependent on measured values by means of the evaluation and control device with regard to the provision and / or entanglement with neighboring driven rollers. Device according to claim 38,
characterized,
that the plate cylinder has a drive for adjusting the peripheral speed of / can be controlled depending on measured values by means of the evaluation and control device with respect to the rotational speed of the plate cylinder relative to the rubber / blanket cylinder or to the printing sheet. Device according to claim 46,
characterized,
that the plate cylinder is assigned its own drive motor. Device according to claim 38,
characterized,
in that one or more drives are provided in connection with the rubber / blanket cylinder and / or the plate cylinder, by means of which, on the basis of an evaluation of the measured data, a change in the provision between the plate and the blanket / blanket cylinder is made. Device according to claims 20 and 38,
characterized,
that a common control system with at least one evaluation and control device for processing measurement data from a print sheet and measurement data of machine elements is provided, in which the respective data are comparable storable and setpoints and for storing and supplying determined from the comparison of control signals to adjusting elements is arranged. Device according to claim 47,
characterized,
in that the control system has an evaluation and control device for the common processing of measurement data from a print sheet and measurement data of machine elements and that the evaluation and control device with the device for processing pre-stage data, the optical detection unit, the device for recording and storing of Einsteildaten, the / the measuring devices for detecting diameters and / or surface shapes of machine elements and with actuators of the printing machine is connected and that the evaluation and control device for data storage, the Soll- / lstwertvergleich, evaluation of the comparison, the selection and storage and supply of the Assessment determined actuating signals is arranged on adjusting elements. Device according to claim 47,
characterized,
in that the control system has a first evaluation and control device for processing measurement data from a print sheet which is connected to the device for processing pre-stage data and the optical detection unit, and a second evaluation and control device for processing measurement data from machine elements which are connected to the / the measuring devices for detecting diameters and / or surface shapes of machine elements is connected, and that a further evaluation and control device is provided which is connected to the first and the second evaluation and control device and with actuators of the printing press, and that the further evaluation - And control device for data storage, for the evaluation of the comparison results of the first and second evaluation and control device, for the selection and storage and supply of determined from the evaluation control signals is arranged on control elements.

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