EP1833675B1 - Method for adjusting the transfer of printing ink - Google Patents

Description

The invention relates to a method for adjusting a transfer of printing ink according to the preamble of claim 1.

In the DE 694 02 737 T2 a temperature-controlled system for printing machines is disclosed, wherein a compression machine optionally provides both for cooling and heating purposes temperature control for the temperature control of inking rollers several printing units. This is done by optionally charging a heat exchanger with compressed, then cooled in a condenser and finally relaxed temperature control and in the other case a Byepass with not relaxed, and therefore hot tempering. In the heat exchanger is now either a cooling or heating of the rollers passing through secondary Temperiermittelkreislaufes. The regulation of the temperature is effected by metering with this temperature control means based on a temperature sensor and a control valve of each roller.

The DE 296 08 045 U1 shows a system for temperature control, wherein for cooling dampening solution, a first cooling device is provided with a first cooling process and a first fluid circuit, which on the one hand thermally via a heat exchanger with the fountain solution supply circuit of dampening and on the other hand thermally via a second heat exchanger with a second fluid circuit is coupled, which in turn is thermally coupled with a second, designed as a cooling tower cooling process.

The DE 44 26 083 A1 discloses a Temperierungsvorrichtung, wherein a tempering fluid for controlling the temperature of a roller in its circuit optionally via a heat exchanger in thermal contact with a cooled fluid circuit or a heating heat exchanger can be performed.

By the WO 03/045694 A1 and the WO 03/045695 A1 Methods are known in which by tempering a cooperating with a printing ink rotating component of a printing unit a tack of the ink on the rotating component in a temperature range of 22 ° C to 50 ° C is kept substantially constant, the speed of the ink from the temperature on the lateral surface of the rotating component and its production speed depends. The application consists in particular in a waterless printing unit, preferably in a printing unit for newspaper printing.

The EP 06 52 104 A1 discloses a printing unit for waterless offset printing with a control device with a plurality of regulators to prevent buildup of ink on a transfer cylinder of the printing unit depending on the deviation of each associated with a thermal sensor on the transfer cylinder or a transfer cylinder associated with the form cylinder of the printing unit or a Farbreibzylinder one Form cylinder associated inking detected temperature in each case from a target value in each case a control valve for controlling the respective cylinders supplied coolant amount, eg. As water controls. During printing should by the controlled amount of coolant constant keeping the temperature of a arranged on the forme cylinder printing form z. B. be possible in a temperature range of 28 ° C to 30 ° C. The temperature of the transfer cylinder should be maintained at about 34 ° C to 35 ° C and the temperature of the inking unit between 25 ° C and 27 ° C. With the supply of the amount of coolant is also possible to preheat the printing unit, so that a chipping of the ink can be avoided at the start of printing with concomitant accumulation of paper particles in the inking unit, wherein a temperature profile of the coolant for preheating after a z. B. stored in the control unit storage unit entered temperature-time curve can be regulated.

By the DE 197 36 339 A1 / B4 is a tempering known in a printing unit, wherein the rheological properties, such as, inter alia, the toughness, are influenced by the tempering. The associated printing machine with a forme cylinder has a short inking unit with an ink fountain, an anilox roller and an inking roller. At least one of the inking rollers or the forme cylinder can be tempered by the tempering device. The temperature is controlled by cooling or heating either from the lateral surface of the inking rollers or the forme cylinder or inside the inking rollers or the forme cylinder. In addition, the color box can also be tempered, in particular also the squeegee for doctoring off excess printing ink from the anilox roller. By means of a control loop, the amount of ink transferred to the forme cylinder can be regulated, the optical density measured on the substrate serving as the signal quantity, with the help of the regulators associated with the tempering devices controlling their temperatures.

The DE-OS 19 53 590 discloses a printing unit with an inking unit and a dampening unit, which is temperature controlled by means of a tempering device. A setpoint for the temperature can depend on influencing variables, eg. B. the printing speed, determined before the start of the printing process by proofs or adjusted by means of tables. An advantageous upper limit of the temperature of the printing ink is indicated at room temperature.

By the DE 39 04 854 C1 It is known that the rotational speed of the cylinders of the printing unit, the inking unit and the dampening system have an influence on the inking unit temperature.

In the DE 44 31 188 A1 is by means of a cooling device, a printing forme Printing unit for waterless offset printing cooled to about 28 to 30 ° C.

By the DE 102 45 702 A1 is a method for controlling the ink guide in a substrate-processing machine with at least one inking known, wherein a computer at least the physical properties of ink and / or substrates are known as data, the stored data are read into a color control model stored in the computer and wherein Use this color control model to make the best color guide settings before printing or during printing.

Of the DE 101 57 271 A1 a method for adjusting a transfer of printing ink can be removed, in which a arranged in an inking unit of a printing press first ink transfers ink to a plate cylinder, in which with a tempering of the first roller on the lateral surface of a target temperature and / or with a tempering of the forme cylinder whose lateral surface is set to a desired temperature at which the tempering of the first roller and / or the tempering of the forme cylinder are each controlled or regulated by an adjustment, in which in a memory unit of the adjustment for different inks or color types color-specific curves or support points at least for one Relationship between a production speed of the printing press and the respective target temperature on the lateral surface of the forme cylinder or on the lateral surface of the first roller are deposited.

The invention has for its object to provide a method for adjusting a transfer of ink.

The object is achieved by the features of claim 1.

The achievable with the present invention consist on the one hand in that a setting and / or adjustment of the respective target temperature on the lateral surface of the forme cylinder or on the lateral surface of the first roller for different inks or ink types for the operators of a printing press in a comfortable way in a display and / or input mask on a monitor of an input and output unit of a setting device is possible because corresponding, a relationship between a production speed of the printing press and the respective target temperature on the lateral surface of the forme cylinder or on the lateral surface of the first roller defining color-specific curves or support points in a Memory unit of the setting are stored and preferably in the display and / or input mask can be displayed, selected and changed.

Moreover, it is advantageous for a delivery rate of an ink to be obtained from an atomizing roller which draws from a reservoir and transmits it to an adjacent body of revolution can be kept at least approximately constant, so that an increase in the production speed of the printing press despite a concomitant decrease in the assets of the anilox roller for transferring ink due to an increasingly incomplete emptying of their wells as constant a quantity of ink is promoted to the substrate. On the other hand, depending on the production speed of the printing machine setting the temperature on the lateral surface, in particular the forme cylinder, the tack of the ink transported by the forme cylinder is held in value in a suitable range for the printing process, so that in particular a chipping of the ink is avoided on the surface of the printing material. The ink is adjusted depending on the production speed of the printing press with regard to their cleavage and adhesion by adjusting their temperature as needed to the currently existing printing process, the setting of their temperature is done indirectly by adjusting the temperature on the lateral surface of a rotating body leading to this ink. In order to avoid waste due to inappropriate temperature-dependent properties of the printed printing ink is taken into account in an intended change in the production speed of the printing machine, the different timing for performing the adjustment of the temperature of the ink and to carry out the adjustment of the production speed of the printing press. Also, the possibility is granted, a machine specification within certain limits z. B. manually and thus to perform a directed to the production of a good quality for the printed product fine-tuning. All of these measures help maintain the quality of a printed product produced by the printing machine at a high level despite a change in the production speed of the printing press.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Fig. 1

eine stark vereinfachte Darstellung von vier aneinandergereihten Druckwerken einer Offset-Rotationsdruckmaschine;

Fig. 2

eine schematische Darstellung eines Druckwerks für den wasserlosen Offsetdruck;

Fig. 3

einen funktionalen Zusammenhang zwischen der Produktionsgeschwindigkeit der Druckmaschine und einer an der Mantelfläche eines Druckfarbe führenden Rotationskörpers einzustellenden Temperatur;

Fig. 4

einen funktionalen Zusammenhang zwischen der Produktionsgeschwindigkeit der Druckmaschine und einer von einer Rasterwalze zu fördernden Farbmenge.

Fig. 5

eine schematische Darstellung verschiedener Kreisläufe von Temperierungsmitteln in der Druckmaschine;

Fig. 6

einen Auszug einer Anzeige- und/oder Eingabemaske zur Temperierung von Rasterwalze und Formzylinder;

Fig. 7

einen Auszug einer Anzeige- und/oder Eingabemaske zur Anwahl einer bestimmten Druckfarbe;

Fig. 8

eine schematische Darstellung der zentralen Bereitstellung und dezentralen Versorgung mit Temperiermittel;

Fig. 9

eine detailliertere Darstellung der Versorgungseinheit;

Fig. 10

eine Ausführung für die Temperierung eines Druckturmes;

Fig. 11

eine Ausführung für die Ausbildung einer Kältezentrale;

Fig. 12

ein erstes Ausführungsbeispiel für die Wärmerückgewinnung;

Fig. 13

ein zweites Ausführungsbeispiel für die Wärmerückgewinnung.

Show it:

Fig. 1

a highly simplified representation of four juxtaposed printing units of an offset rotary printing machine;

Fig. 2

a schematic representation of a printing unit for waterless offset printing;

Fig. 3

a functional relationship between the production speed of the printing press and a temperature to be set on the lateral surface of a printing ink rotating body temperature to be set;

Fig. 4

a functional relationship between the production speed of the printing press and an amount of ink to be delivered by an anilox roller.

Fig. 5

a schematic representation of different circuits of Temperierungsmitteln in the printing press;

Fig. 6

an excerpt of a display and / or input mask for controlling the temperature of the anilox roller and forme cylinder;

Fig. 7

an excerpt of a display and / or input mask for selecting a particular ink;

Fig. 8

a schematic representation of the central provision and decentralized supply of temperature control;

Fig. 9

a more detailed representation of the supply unit;

Fig. 10

an embodiment for the temperature of a printing tower;

Fig. 11

an embodiment for the training of a refrigeration unit;

Fig. 12

a first embodiment of the heat recovery;

Fig. 13

a second embodiment of the heat recovery.

The Fig. 1 shows in a highly simplified representation by way of example four juxtaposed printing units 01; 02; 03; 04 an offset rotary printing machine each with a forme cylinder 06; 07; 08; 09, a transfer cylinder 11; 12; 13; 14 and an impression cylinder 16; 17; 18; 19, wherein for the production of printed on both sides printed products each impression cylinder 16; 17; 18; 19 also preferably as a transfer cylinder 16; 17; 18; 19 is formed, which in turn cooperates with a associated therewith (not shown) form cylinder. A print carrier 21, z. B. a printing sheet 21 or a web 21, preferably a paper web 21, during a production of the printing press in each case between the transfer cylinder 11; 12; 13; 14 and the impression cylinder 16; 17; 18; 19 passed and printed with at least one printed image. It is irrelevant to the invention whether the printing units 01; 02; 03; 04 are arranged such that the print carrier 21 is guided horizontally or vertically through the printing press.

At the printing press can preferably at the output of the last in the transport direction of the printing medium 21 printing unit 04 of this printing press, an image sensor 22, z. B. a color camera 22, preferably a digital semiconductor camera 22 with at least one CCD chip, arranged and directed with its image pickup area preferably directly and directly to the print carrier 21, wherein the image pick-up area of the image sensor 22 z. B. detects the entire width of the print carrier 21, wherein the width of the print carrier 21 transversely to the transport direction through the printing press extends. The image sensor 22 thus detects an electronically evaluable image z. B. of the entire width of the printed paper web 21, wherein along the width of the paper web 21, at least one printed image on the print carrier 21 is applied. The image sensor 22 is z. B. formed as a surface camera 22.

The image sensor 22 transmits the correlated with the recorded image data to a suitable evaluation unit 23, in particular a program-controlled electronic computer system 23, the z. B. is arranged in a belonging to the printing press control room. Parameters relevant for the printing process can be checked by an analysis and evaluation of the recorded image carried out in the evaluation unit 23 and corrected, if necessary, by programs running in the evaluation unit 23 so to speak automatically, ie program-controlled. The evaluation and correction of all relevant parameters for the printing process takes place here practically at the same time by means of the same evaluation unit 23. In particular, the image acquired by the image sensor 22 during an ongoing production of the printing press and supplied in the form of a data set of the evaluation unit 23 is evaluated as to whether the current Image recorded and evaluated printed image compared to a previously recorded and evaluated print image a Tonwertveränderung, in particular a dot gain, ie a currently recorded image is checked in the current printing process in comparison to a reference image. If the result of the test is a tonal change, ie, a pressure-technically unavoidable tone value increase, the dosage and / or the supply of the printing ink in the printing machine is determined by at least one outgoing from the evaluation unit 23, via a data line 24 and at least one of the printing units 01; 02; 03; 04 modified first control command to the effect that the Tonwertveränderung is minimal by a subsequent to the currently tested image applying ink. After the control of the color density carried out with the change in the metering and / or the supply of the ink, an image following the currently checked image corresponds again to a printed image in its color impression better a previously checked image of a printed image, ie the reference image. The control and regulation of the Tonwertveränderung is therefore important to keep the color balance or gray balance and thus the color impression of the printed products - possibly within permissible tolerance limits - as constant as possible in the printing process, which is an important quality feature for printed products.

Likewise, the amount of data generated from the image of the printed image and transferred to the evaluation unit 23 is used to check the registering of the printed image applied on the print substrate 21, in particular for checking and optionally correcting a color register of a printed image printed in multicolor printing. In the printing machine at least one preferably motorized adjustable register is provided, for. B. a circumferential register or a page register, optionally also a diagonal adjustment for at least one of the forme cylinder 06; 07; 08; 09 relative to its associated transfer cylinder 11; 12; 13; 14, wherein the register by at least one outgoing from the evaluation unit 23, guided over a data line 26 and at least one of the printing units 01; 02; 03; 04 acting second control command is regulated in response to this test to the effect that for a recording of the evaluated image subsequent printing image results in a maximum register accuracy. An adjustment or adjustment of the registers is thus calculated by the evaluation unit 23 from the image data which the image sensor 22 provides to the evaluation unit 23. With the adjustment or adjustment of the side register and fan-out conditional transverse strain can be counteracted, this transverse strain occurs in particular in printing machines, which have a so-called four-tower design for their printing units.

The printing machine is preferably formed undulating. In such a printing press preferably have the forme cylinder 06; 07; 08; 09 via individual drives, by the drives for the impression cylinder 16; 17; 18; 19 are mechanically decoupled, so that the phase angle or the angular position of the Forme cylinder 06; 07; 08; 09 against the counter-pressure cylinders 16; 17; 18; 19 by an appropriate control or regulation, preferably the drives of the forme cylinder 06; 07; 08; 09 can be changed whenever an evaluation of the image taken by the print carrier 21 by means of the image sensor 22 makes this seem necessary. The entire image content, and not just individual localized pixels of the print carrier 21, such as. B. reference marks o. Ä., Thus, the control or regulation of the printing unit 01; 02; 03; 04, in particular the drives of the forme cylinder 06; 07; 08; 09th

A control command generated by the evaluation unit 23 from the image content of the image recorded by the print image acts on a control device or control device of a preferably position-controlled electric motor for rotary drive during printing of at least one of the forme cylinder 06; 07; 08; 09, the transfer cylinder 11 assigned to it; 12; 13; 14 or impression cylinder 16; 17; 18; 19. This is at least in one of the printing units 01; 02; 03; 04 of the printing press the drive, in particular the forme cylinder 06; 07; 08; 09 or of this forme cylinder 06; 07; 08; 09 associated transfer cylinder 11; 12; 13; 14 independent of the drive of the forme cylinder 06; 07; 08; 09 or of this forme cylinder 06; 07; 08; 09 associated transfer cylinder 11; 12; 13; 14 in another printing unit 01; 02; 03; 04 of the printing machine preferably controlled or regulated by electrical signals, in particular, the mutual angular position or phase position of the pressure of the printed product, ie the printed image, involved in different printing units 01; 02; 03; 04 of the printing press arranged form cylinder 06; 07; 08; 09 or their associated transfer cylinder 11; 12; 13; 14 by the associated control device or control device, for. B. the evaluation unit 23, are set to a suitable for the generation of the printed product registration. The electric motor of the forme cylinder 06; 07; 08; 09 is preferably coaxial with the axis of the forme cylinder 06; 07; 08; 09 arranged, wherein the rotor of the motor with a pin of the axis of the forme cylinder 06; 07; 08; 09 is preferably rigidly connected in the manner as z. B. in the DE 43 22 744 A1 is described. The in different printing units 01; 02; 03; 04 of the printing machine arranged impression cylinder 16; 17; 18; 19 can, such. B. in the EP 0 812 683 A1 described, for. B. be mechanically interconnected by a train of gears and z. B. have a common drive, but the forme cylinder 06; 07; 08; 09 or the associated transfer cylinder 11; 12; 13; 14 with regard to their drive from the counter-pressure cylinder 16 assigned to them; 17; 18; 19 remain decoupled. Between the forme cylinder 06; 07; 08; 09 and its associated transfer cylinder 11; 12; 13; 14 may be a coupling z. B. by means of intermeshing gears, so that the forme cylinder 06; 07; 08; 09 and its associated transfer cylinder 11; 12; 13; 14 are driven by the same drive. The control device or control device of the drives at least the forme cylinder 06; 07; 08; 09 is z. B. integrated in the evaluation unit 23.

The control or regulation of the phase position or the angular position of the forme cylinder 06; 07; 08; 09 against the counter-pressure cylinders 16; 17; 18; 19 takes place with respect to a fixed reference setting, so that the forme cylinder 06; 07; 08; 09 with respect to the associated counter-pressure cylinder 16; 17; 18; 19 may have a leading or trailing rotation, wherein the relation of the rotations of the forme cylinder 06; 07; 08; 09 and its associated impression cylinder 16; 17; 18; 19 is set in dependence on the image content of the image sensor 22 recorded image and also tracked with the control device or control device of their drives. In the same way, also the phase position or angular position of each other in the printing process downstream form cylinder 06; 07; 08; 09 be controlled or regulated with respect to a fixed reference setting, which in particular in the multi-color printing of a successive printing units 01; 02; 03; 04 of the printing press color printed matter is of importance. If the picture taken of the print image, which preferably has a plurality of colors, shows that for a print in one of the printing units 01; 02; 03; 04 verdruckten ink correction needs, is the evaluation unit 23 to the relevant printing unit 01; 02; 03; 04 from the detected interference counteracting control command.

If the control unit to be controlled by the evaluation unit 23 via setting commands, z. B. the actuators to control the supply of ink and the drives for controlling the circumferential register or the page register, are connected in the printing machine to a standing with the evaluation unit 23 data network, are provided for transmitting the first and the second control command data lines 24th ; 26 preferably realized by the data network.

The checking of a tone value change that occurs in the printing process and the check for register integrity are advantageously carried out simultaneously in the evaluation unit 23 by a parallel data processing. Preferably, these two tests are carried out continuously in the current printing process, and advantageously at the end of the printing process and also for each individual printed copy produced.

The check for register validity initially refers to a congruent coincidence in the position of the printed image or type set between perfecting or between the top and bottom in the production of double-sided printed matter. The test also includes z. For example, check the passport, d. H. the verification of the intended accuracy, which have individual partial colors when overprinting in multi-color printing. Register accuracy and register accuracy play an important role in multicolor printing.

The image sensor 22 is advantageously a lighting device 27, z. B. associated with a flashlamp 27, wherein from the flashlamp 27 emanating short-term flashes of light fast motion processes, as they represent the printing process, seem to be stopped by a stroboscopic method and make it observable to the human eye. Especially in a sheet-fed press can be carried out with the image sensor 22 detection of the printed image in or on a display 28 of the printing press, which in the Fig. 1 is shown by a dashed line of the image sensor 22 and the associated lighting device 27 as a possible option for detecting the printed image behind the last printing unit 04 of the respective printed page or at the end of the printing press. By an appropriate choice of the image sensor 22 and optionally the associated lighting device 27, the detection of the image on a visually invisible spectral range, such. As the infrared or ultraviolet range or be moved there. As an alternative to the preferred area camera 22 with a flashlamp 27, the use of a line camera with a permanent lighting is possible.

Since preferably each printed copy is subjected to a check, in the current printing process, i. H. in the print run, a trend for both the Tonwertveränderung and for the registration of successively produced printed copies recognizable. Depending on the value determined for the tone value and / or its associated register in the current printing process, the printed copies can be classified into groups of different quality levels and marked as reject copies if an allowable tolerance limit is exceeded. Committee copies can be discharged in a controlled manner by the evaluation unit 23 or, in particular, in a sheet-fed printing machine in the delivery 28, at least deposited on a separate storage stack 29. For this purpose, from the evaluation unit 23 evaluating the image, at least one third positioning command, which is directed via a data line 31, is issued. As a waste signal to at least one acting on at least one means for transporting the print carrier 21 actuator for sorting the Exemplarstromes.

For synchronization of the frequency with which the detection of images of the print carrier 21 takes place, with the transport speed of the print carrier 21, ie the speed z. B. the paper web 21 is at least in one of the printing units 01; 02; 03; 04, preferably in that printing unit 01; 02; 03; 04, in or on which the capture of the images with the image sensor 22, a rotary encoder 32 is installed, the current rotary encoder 32 in a fixed ratio to the speed of that transfer cylinder 11; 12; 13; 14 at which the image sensor 22 detects the images. The rotary encoder 32 outputs its output signal to the evaluation unit 23 and / or also to the image sensor 22. The output signal of the rotary encoder 32 is used inter alia as a trigger for the flash lamp 27.

The image detected by the image sensor 22 and supplied in the form of a data quantity to the evaluation unit 23 is preferably displayed on a monitor of an input and output unit 33 connected to the evaluation unit 23 and standing in bidirectional data exchange. Likewise, the input and output unit 33 provides correction options for at least one of the mentioned controls by allowing manual inputs and / or triggering of at least one control command.

The evaluation unit 23 has a memory 34 u. a. for storing captured image sequences and for storing data useful for logging and accompanying documentation of the quality of the printed matter as well as for statistical analysis of the printing process. It is of advantage if the evaluation unit 23 can provide the data evaluated and / or stored in it through a corresponding connection 36 to a company network.

For the comparison of data carried out by the evaluation unit 23, which correlate with an image currently recorded during ongoing production of the printing press, with data of a previously generated image, it may be provided that the data of the previously generated image is provided with a prepress preceding in one of the printing press correlated, wherein a data processing device of the prepress (not shown) connected to the evaluation unit 23 and the data of the previously generated image of the evaluation unit 23 zuleitet. In this way, the data of the previously generated image are generated as an alternative or in addition to data that correlate with an image recorded by the image sensor 22 and provided to the evaluation unit 23 for evaluation. Prepress data correlated with the print image forms the more accurate reference data for controlling or regulating the color register against data obtained from previously printed images in current production.

In the illustrated printing machine, register control and color control based on an analysis of the image captured by the image with the image sensor 22 is possible by evaluating the image of the image with respect to various parameters relevant to the printing process in a single evaluation unit 23 and simultaneously inspecting the image Print image to assess the quality of the printed matter.

The register control is based on a register measurement in the printed image. After all printing inks required for the printed image have been printed, the entire printed image is preferably acquired by the camera at the end of the printing press. In the evaluation unit 23, the detected printed image is preferably decomposed into the color separations CMYK customary in printing technology and an analysis of suitable print image sections and relative position determination of a color separation with respect to a reference color separation by correlation methods with a previously acquired or obtained reference print image.

The reference image or reference value for image section or a print image mark (density target) is z. B. either from the prepress stage, which has the advantage that the reference image is already present in the individual color separations, or it will be a reference image, for. B. a printed image having reference sheet, used for evaluation from a pressure of the printed image, this reference image additionally still has to be decomposed into the color separations. This reference sheet is recorded after the image has been adjusted manually once so that all printed inks are properly aligned with each other and a proper color register is set. This reference print image obtained in this way can be stored for subsequent repeat jobs, so that it is possible to fall back on this previously recorded reference image in the case of a repeat job. By accessing the stored reference print image, the color register can also be adjusted automatically by the evaluation unit 23 without manual intervention, which leads to a further reduction of the waste in the case of a repeat job.

From the reference print image characteristic and suitable cutouts are selected based on which the position of the individual color separations is determined to the reference color separation. This is the so-called set position for the later register comparison. This reference image, including the color separations and the target position z. B. stored in memory 34. The selection of the appropriate printed image sections can be done manually by the operator or automatically by the evaluation unit 23, z. B. for a presetting of the desired position, done. Suitable printed image sections with regard to registration measurement are areas in which the printing ink to be measured dominates or exclusively occurs.

In the current printing process, ie in the continuous printing, each print image is detected by means of the camera system and decomposed into the color separations CMYK. The position of the individual color separations is now determined within the previously defined, suitable print image sections. This is done by comparison with the color separations from the reference print image z. B. by a correlation method, in particular a cross-correlation method. By means of the correlation method, the position of the color separations can be determined to be about 0.1 pixel of the camera resolution. If a stationary register offset is determined repeatedly for each printed sheet 21, a high accuracy of the measured value is due to a stochastic scattering suppression guaranteed.

The determination of the position of the individual color separations takes place in the web running direction corresponding to the longitudinal register and in the transverse direction to the web running direction corresponding to the page register. The position differences thus obtained are converted by the evaluation unit 23 into setting commands and used as correction signals to the adjustment system, i. H. to the drives, sent.

In offset printing, spot colors do not match the standard colors; H. the scales CMYK, mixed, but separately printed. Special colors are therefore also measured separately. First of all, the areas in which special colors are printed must be specified. For each of the special colors, separate suitable areas are now defined, in which the position of the color separation in the same manner as for the scale colors CMYK, d. H. the standard colors are determined. The further procedure for register control for spot colors is identical to the procedure described above for standard colors.

An advantageous embodiment is described below in which, based on acquired data on the color density and / or spectral analysis, the control of the ink feed is carried out as a reference variable via a temperature adjustable on the surface of the rotating body involved in the printing process. In this case, the acquisition of the data over the entire web width or printing width, only via one or more print image sections or special applied on the substrate brands. The color density corresponds to a layer thickness of the ink applied to the substrate and can, for. B. be detected densitometrically, both inline, ie in the current printing process as well as offline, ie by a measurement of discharged from the current printing process printed copies.

As the Fig. 2 shows, an adjusting device 37 is provided, which a signal with data from the evaluation unit 23 are supplied. For example, depending on z. B. determined by the setting device 37 deviation of a currently detected color density D1 of a predetermined color as a setpoint density D2 a change of the setting device 37 by means of at least one tempering device 57; 58 set temperature on the lateral surface of at least one of the participating in the printing process, ink-transporting rotary body 43; 47; 53; 54, z. B. cylinder 43; 47 and rollers 53; 54 made. With regard to a fast, systematic and thus reproducible change z. B. in a arranged in the adjustment device 37 or the evaluation unit 23 memory 34, a functional relationship between the deviation in the color densities D1 and D2 and the temperature to be set be kept, this functional relationship z. B. in at least one characteristic, table or in another suitable, the correlation representing form z. B. is fixed graphically or electronically.

In the Fig. 2 shown adjusting device 37 together with the arrows represent here representative of the action paths of the control or regulation. This was not distinguished between signal paths and supply paths. The adjustment device 37 may include a control device 72, for. Example, an electronic control unit 72, and / or a supply device 71, not shown here for the metering and supply of temperature control means have (see 8 to 11 ). The control electronics 72 then act on actuators (eg valves) of the supply device 71, for example according to the specifications determined by means of a stored logic.

The in the Fig. 2 illustrated printing machine is in particular designed as a rotary printing machine and has a printing unit 41, which at least one inking unit 42, a printing plate 44-bearing cylinder 43, z. B. has a form cylinder 43 executed printing cylinder 43, and a counter-pressure cylinder 46 has. Particularly advantageous is the solution described below for Printing machines or modes of operation at a web speed of more than 10 m / s, in particular greater than or equal to 12 m / s. The printing form 44 is preferably designed as a printing plate 44 for the planographic printing (planographic printing plate 44), in particular for the waterless planographic printing (waterless planographic printing plate 44). The printing unit 41 is z. B. designed as a printing unit 41 for offset printing and has between the forme cylinder 43 and the impression cylinder 46, a further cylinder 47, z. B. a 47 designed as a transfer cylinder printing cylinder 47 with a lift 48 on its lateral surface. The transfer cylinder 47 forms with the impression cylinder 46 in a print-on position on a substrate 49, z. B. a printing substrate 49, a printing point 51. The impression cylinder 46 may be another transfer cylinder 46 of a non-designated further printing unit, or a no ink leading impression cylinder 46, z. As a steel or a satellite cylinder, be.

The printing form 44 can be sleeve-shaped or else designed as one (or more) pressure plate (s) 44, which is fastened or suspended with its ends in at least one narrow channel which does not exceed a circumferential width of 3 mm (indicated in FIG Fig. 2 ). Likewise, the elevator 48 on the transfer cylinder 47 sleeve-shaped or as (at least one) blanket be executed 48, which is also attached and / or tensioned in at least one channel. If the blanket 48 is designed as a multi-layer metal printing blanket, then the channel is also designed with the above-mentioned maximum width.

The inking unit 42 has a paint supply 52, z. B. a paint tray with a fountain roller or a lift, or a chamber doctor blade with ink supply, and at least one engageable with the forme cylinder 43 in a print-on position roller 53, z. B. an applicator roller 53. The ink is transported in the example shown by the ink supply 52 via an executed as an anilox roller 54 54, the roller 53, the forme cylinder 43 and the transfer cylinder 47 on the substrate 49 (eg web-shaped or as a sheet). It can also be a second, with the anilox roller 54 and the form cylinder 43 cooperating, dashed lines applicator roller 53 may be arranged. The anilox roller 54 has recesses or cups on its lateral surface in order to be filled with this printing ink from a reservoir 61 for the printing ink, e.g. B. scoop color box 61 contained in a printing ink and on an adjacent rotary body 53, z. B. the applicator roll 53 to transfer.

The printing unit 41 is designed as a so-called. Printing unit for the waterless planographic printing "in particular" waterless offset printing "(dry offset"), d. H. that in addition to the supply of ink no further supply of fountain solution for the formation of "non-printing" areas is required. In these methods, the application of a moisture film on the printing plate 44 can be omitted, which otherwise in the so-called "wet offset" prevents the non-printing parts on the printing plate 44 from accepting printing ink. In waterless offset printing this is achieved by the use of special inks and the special design of the surface on the printing plate 44. So z. B. take a silicone layer in waterless offset printing the role of assignable with dampening hydrophilic range of wet offset and prevent the printing plate 44 on the color recording.

Generally, the non-printing areas and the printing areas of the printing form 44 are achieved by the formation of areas of different surface tensions when interacting with the ink.

In order to print tone-free, ie without the non-printing areas also accept printing ink and possibly even clogging, it requires a printing ink, which is set in their tack (measured as tack value) so that due to the surface tension difference between printing and non-printing games on the printing forme 44 can be properly separated. Since the non-printing areas are preferably formed as a silicone layer, a printing ink with a compared to the wet offset significantly higher tack is needed for this purpose.

The tackiness represents the resistance with which the ink counteracts the film splitting in a nip or during the transfer of the printing ink in the printing zone between the cylinder and the printing substrate.

As the tack of the ink changes with temperature, in practice, during operation of the printing press, the cylinders 43; 47 and the inking unit 42 tempered, in particular cooled, and kept at a constant temperature in order to avoid cloning for the changing operating conditions during printing.

The temperature dependence of rheological properties, such. As the viscosity and / or the tack, is now used to influence, in particular regulation, the amount of ink to be transported from the reservoir 61 to the substrate 49. Instead (or in addition) of mechanical actuators, such. As the opening or closing of doctor blades or the changes in a speed of lifters or film rollers, by changing the temperature on the lateral surface of at least one of the rotational body 43 involved in the printing process; 47; 53; 54 are influenced on the result of the comparison of the target color density D2 with the detected actual color density D1.

The tack of the ink, in addition to the separation of printing and non-printing areas, however, also influences the thickness of a plucking in the interaction of a color-guiding cylinder 43; 47 with the substrate 49. In particular, when the substrate 49 as uncoated, low-density newsprint with very good absorbency, ie open-pored and with very low Wegschlagzeit executed, increases the risk of loosening caused by fibers or dust. This danger is but z. B. also used in web offset printing lightly coated or lightweight, coated paper grades with a coating weight of z. B. 5 - 20 g / m ² , in particular 5 - 10 g / m ² or even less before. Overall, the Tempering especially for uncoated or coated papers with a coating weight of less than 20 g / m ² . For coated papers, the temperature of the ink-carrying cylinder 43; 47 then advantageous if it is found that the stroke is "pulled off" by increasing speed from the paper (at least partially).

In order to minimize picking on the printing substrate 49 or build-up of printing ink on the elevator 48 of the transfer cylinder 47 and / or the printing forme 44 of the forme cylinder 43, an attempt is made to manufacture and use the ink for the intended use and the expected operating conditions, that it should be used as much as possible at the lower limit of its speed.

In one embodiment, one or more of the color-leading components, such. B. in an advantageous embodiment of the form cylinder 43 designed as a printing cylinder 43 as farbführendes component 43, and / or the ink itself, are heated simultaneously in dependence on the production speed V of the press, including a correlating with the production speed V of the printing press signal z. B. sensor on the ink-carrying transfer cylinder 47, z. B. with a rotary encoder (not shown), tapped and the adjusting device 37 and / or the evaluation unit 23 is supplied. The temperature on the lateral surface of at least one of the rotating bodies 43 involved in the printing process; 47; 53; 54, preferably of the forme cylinder 43, is not kept constant for all production speeds V in a specific temperature range, as otherwise usual in waterless offset printing, but instead has a different desired temperature T _{i, soll} for different production speeds V. The setpoint temperature T _{i, soll} is adjusted by means of the setting device 37 as a function of the production speed V such that the tack of the printing ink at any desired production speed V is within a predefinable window of tolerable tack values. For a higher production speed V, an increased value for the setpoint temperature T _{i, soll of} the corresponding component 43 or the Ink selected.

A regulation is based for example on the principle that for the intended, imminent or currently set production rate V as a reference variable due to a systematic assignment, a specific value or maximum value for the setpoint temperature T _{i, soll of} the component 43 or the printing ink as output variable is provided. In both cases, the desired value or maximum value represents a presetting temperature, which in the first case corresponds to a temperature to be maintained and in the second case corresponds to an upper limit of an admissible temperature. On the basis of a with a photoelectric sensor 56, preferably an image sensor 56, in particular a CCD camera 56, preferably inline carried out the currently applied to the substrate 49 by the printing process color density D1 and the comparison of this detection value with that in this print for the color density D2 however, the temperature is varied and tracked until a sufficient coincidence between the actual color density D1 and the target color density D2 is achieved.

If other conditions exist, eg. As a printing ink having substantially different properties, in particular in terms of their consistency, or a substrate 49, which has a different surface texture of uncoated newsprint paper and / or a completely different Rupfverhalten, the values of the relationship may differ significantly from the above values. However, the solution is still the common setting of the temperature of the forme cylinder 43 as a function of the production speed V, in such a way that it has a higher setpoint or maximum value in a range of higher production speeds V than for a range of lower production speeds V. Plucking between ink-guiding cylinder 43; 47 and the substrate 49 reduced and ideally almost prevented.

The above-mentioned relationships between a determined color density deviation and a temperature change and / or between temperature on the lateral surface of at least one of the rotational body 43 involved in the printing process; 47; 53; 54 and the production speed V of the printing press can be stored for different printing inks and / or types of printing material. During the printing operation, the relationship specific to the respective printing ink and / or the respective printing substrate 49 is then used. See also part of the description of the embodiment according to Fig. 6 and 7 ,

In an advantageous embodiment, the anilox roller 54 and the forme cylinder 43 each have an effect of their interior on the respective lateral surface, preferably of a flowable tempering, z. As water flowed through tempering 57; 58, wherein the temperature at the lateral surface of the anilox roller 54 is adjusted, preferably controlled, with regard to the quantity of ink to be transferred therefrom and the temperature at the lateral surface of the forme cylinder 43, taking into account the production speed V of the printing machine to avoid picking and / or cloning or regulated. The adjusting device 37 is formed as a control device 37 or as a control device 37 depending on the present case, whether the process is controlled or regulated. In the case of the embodiment as a control device 37, there is no feedback in the process via the photoelectric sensor 56 or the signals or data supplied by it.

For the control of the temperature on the lateral surface of the anilox roller 54, the temperature (empirical) at which the desired color density can be determined on the product is determined, for example, in the run-up to production for the relevant pairing (s) of printing ink / paper at different production speeds V is. In the regulation of the temperature on the lateral surface of the anilox roller 54, the currently set temperature can be detected by means of at least one thermo sensor 59 arranged on or at least close to the lateral surface of the anilox roller 54, the output signal of which is fed to the adjusting device 37 and then in dependence be adjusted if necessary by a comparison made in the evaluation unit 23 of the current temperature with a temperature setpoint as desired and thus tracked to promote the required amount of ink for the print image.

Parallel to the control / regulation of the temperature on the lateral surface of the anilox roller 54, the temperature on the lateral surface of the forme cylinder 43 in dependence on the production rate V (possibly additionally depending on the substrate 49 and / or the ink) controlled or regulated, the scheme the temperature at the lateral surface of the forme cylinder 43 using a further (not shown) thermocouple is similar to that for controlling the temperature on the lateral surface of the anilox roller 54. Preferably, however, this is not additionally varied over the result of the output unit 23, but it correlates firmly with the production speed V of the printing machine.

It is advantageous that a temperature to be set for a value of the production speed V of the printing press on the lateral surface of the roller 54, in particular the anilox roller 54 and / or the cylinder 43, in particular the forme cylinder 43, is started or at least started with the setting of this required temperature before the printing machine sets the new value of the production speed V, so that the temperature adjustment with respect to an intended change in the production speed V is advanced. By this precontrol an otherwise systematically occurring error can be avoided because the amount of waste produced due to an inappropriate temperature setting can be significantly reduced by a temporally advanced adjustment of the temperature setting. Because the adjustment of the temperature setting usually reacts slower, so with a longer reaction time to reach a stable operating condition, as the change in the production rate V, the z. B. is performed by means of electronically controlled or regulated drives. Thus, an intended change in the production rate V, the z. B. by a corresponding, z. B. manual input to the evaluation unit 23 associated input and output unit 33 is displayed, for. B. program technically delayed by the evaluation unit 23 in their execution until the tempering 57; 58 has reached the required for the new production speed V, to be set on the lateral surface of the anilox roller 54 and / or the forme cylinder 43 completely or at least to a considerable extent of well over 50%, preferably over 80%, in particular over 90%.

With regard to the anilox roller 54 alone or the printing machine as a whole, the measures described above are also suitable for setting the temperature to be set on the lateral surface of the anilox roller 54 as a function of the production speed V of the printing press or at least adjustable such that it increases with increasing production speed V the printing machine declining assets of the formed on the lateral surface of the anilox roller 54 depressions for transferring ink on the anilox roller 54 adjacent rotational body 53 is compensated by a temperature-induced reduction of a viscosity of the ink. Because with increasing production speed V of the printing press, the ink-filled depressions or wells on the lateral surface of the anilox roller 54 increasingly imperfectly emptied, so that the deteriorating transfer behavior of the anilox roller 54 can be compensated by an adapted liquefaction of the ink to be transferred, wherein the reduction in viscosity the ink is advantageously carried out by means of the temperature to be set on the lateral surface of the anilox roller 54.

In a further advantageous embodiment, the tempering device 57; 58 formed such that with the tempering device 57; 58 assigned adjusting device 37 due to a predetermined functional assignment for a value of the production speed V of the printing press on the lateral surface of the Roller 54, in particular the anilox roller 54, and / or the cylinder 43, in particular of the forme cylinder 43, set temperature within predetermined limits z. B. is changeable by a manually executed setting. As a result, a possibility of intervention in machine-specified settings is given, whereby within a maximum permissible tolerance range of z. B. +/- 5% or 10% with respect to the default value as needed a z. B. manually executed fine tuning is feasible. The threshold values may be symmetrically or asymmetrically spaced from the default value, e.g. B. also define a tolerance range between - 5% and + 10%.

Fig. 3 schematically shows a functional relationship (eg dependence B in Fig. 6 ), such as a target temperature T _{i, should} on the lateral surface of at least one of the rotating body 43 involved in the printing process; 47; 53; 54 may be dependent on the production speed V of the printing press. The functional relationship can be linear or not linear. In any case, based on the functional relationship for a printing process determined inter alia by the printing ink used and the substrate 49 used as a function of the production speed V of the printing machine, a suitable value for the on the lateral surface of at least one of the rotating body 43 involved in the printing process; 47; 53; 54 to be set target temperature T _{i, should be} determined. The value determined by machine for the at least one of the rotating bodies 43 involved in the printing process on the lateral surface; 47; 53; 54 to be set target temperature T _{i, should} be within specified limits in the sense of fine-tuning z. B. be manually changeable, which in the Fig. 3 is indicated by a vertical, enclosed in boundary lines double arrow.

Fig. 4 also shows by way of example a functional relationship of an amount of ink delivered by the anilox roller 54 as a function of the production speed V of the printing press. By adjusting the temperature on the lateral surface of the anilox roller 54, in particular the viscosity of be promoted to be conveyed ink such that the delivery rate remains at least approximately constant with a change in the production speed V of the printing press. This can preferably take place via a reserved relationship (eg dependence A in FIG Fig. 6 ) between production speed V and a target temperature T _{j, should} take place. In particular, however, the delivery rate of the anilox roller 54 may alternatively or in addition to its dependency on the production speed V of the printing machine be made dependent on a determined deviation of the currently detected color density D1 from the color density D2 predetermined as the desired value.

The index "i" or "j" in the setpoint temperature T _{i, soll} or T _{j, soll} should indicate that this is a plurality of deposited dependencies A; B for various components 43; 54 and / or color types F and / or paper types can act. Thus, in the storage unit 34 of the adjustment device 37 there is a set of differing relationships A; B at least for the respective setpoint temperature T _{i, soll} ; T _j, the anilox roller 54 and the forme cylinder 43 is to be deposited on the means of the input and output unit 33 z. B. the adjustment device 37 can be accessed.

Fig. 6 and 7 represent in a display and / or input mask an exemplary embodiment of a temperature control, wherein a specification of the setpoint temperature T _{i, soll} ; T _{j, is} the temperature of the component 43; 54 - here the anilox roller 54 and the forme cylinder 43 - in dependence A for the forme cylinder 43 and B for the anilox roller 54 from the production speed V takes place. For this purpose, in a memory unit 34, z. B. in a database of the control computer, the setting device 37 or the evaluation unit 23, for different inks or color types color-specific curves (analytic) or supporting points (tabular) for the relationship between the setpoint temperature T _{i, soll} ; T _{j, should} the relevant component 43; 54 and the production speed V deposited. As in Fig. 6 can be seen for the temperature of anilox roller 54 and forme cylinder 43 each own dependencies A; B (curves or tables). In the Fig. 6 Curves based on in the memory unit 34, in particular a database of the memory unit 34, for a particular selected or selected color type F (here exemplified by "HUBER MAGENTA") held by supporting points. The selection of the color type F, and thus the dependency, can for the anilox roller 54 and / or the forme cylinder 43 from a list, for. B. via a mask or a menu accordingly Fig. 7 , respectively. When selecting a printing color or a color type F, the stored dependency A; B (a curve and / or the deposited support points) uploaded and as a basis for setting the temperature of this component 43; 54 used. Preferably, the curves or support points can be changed by the operator to make an adjustment and then changed in the memory unit 34 can be stored so changed.

Based on this reserved dependency A; B or relationships becomes a required target or target temperature T _{i, soll} ; T _{j, is} the temperature of the component 43; 54 defined for the present production rate V, as a default value for the target temperature T _{i, soll} ; T _{j, should be} output and implemented, for example via a below explained in more detail supply device 71 with control electronics 72.

An advantage is an education, according to which a reserved dependency A; B (as a curve and / or as a series of fulcrums) can be corrected by the operator as a whole, absolutely or relatively up or down. This is expressed in Fig. 6 (in each case for the forme cylinder 43 and the anilox roller 54), for example, by the input field "Temp.-Offset [%]" and the input field "Curve change". As a result, the dependency A; However, an adaptation to special printing density requirements and / or an adaptation to the requirements of different printing materials can be achieved by an input at the display and / or input mask 33 displayed on the monitor of the input and output unit 33 (FIG. Fig. 6 and 7 ) manually, ie manually. In the variant "Temp. Offset [%]", however, the stored and displayed dependency becomes itself not modified, but only applied to the resulting for the subsequent control loop setpoint accordingly with the change. Thus, the reserved dependency A remains; B or curve in principle, the change affects only the selected printing unit. In a second conceivable variant "curve change", the dependency (curve or series of interpolation points) can be changed per se. It can be provided that this can be done by adding a constant (total lifting or lowering) and / or percentage (spreading or upsetting).

In the present example, for the forme cylinder 43 target or setpoint temperatures T _{i, should} preferably be between 20 and 24 ° C. for production speeds V of 5,000 cylinder revolutions / hour and between 24 and 28 ° C. at 35,000 cylinder revolutions / hour. For the anilox roller 54 are the target or target temperatures T _{i, should be} for production speeds V of 5,000 cylinder revolutions / hour between 22 and 27 ° C and at 35,000 cylinder revolutions / hour between 31 and 36 ° C.

Of the Fig. 5 is removable, that in the printing machine several separate circuits for temperature control can be provided, namely in particular a supply circuit K2, z. B. circuit K2 for at least one of the printing cylinder 43; 47 and / or the anilox roller 54 and another supply circuit K3, z. B. Circuit K3 z. B. for the drives M of the printing cylinder 43; 47 and / or the anilox roller 54 and / or optionally assigned to these drives M controller as components to be tempered M.

The z. B. substantially of water (with or without additives) existing tempering is used for temperature control of the printing cylinder 43; 47 and / or the anilox roller 54 by a cooling device 77, z. B. a refrigeration unit 77, provided in a temperature range between 10 ° C and 25 ° C, whereas the temperature control means for controlling the temperature of the drives M of the printing cylinder 43; 47 and / or the anilox roller 54 is provided in a temperature range between 24 ° C and 30 ° C. As explained in more detail below, this refrigeration unit 77 can be an air-cooled condenser and / or a free-cooling device and / or a booster cooling for peak power at higher ambient temperatures z. B. in summer and / or have a heat exchanger for heat recovery and / or a compressor chiller. As explained below, it preferably has at least two of these cooling devices 77.

By heat recovery, z. B. a device for heat recovery 66 such as to FIGS. 12 and 13 described, z. B. 5-10% of the cooling capacity of the cooling processes 87 (see below) are recovered. This recovered energy can be used for internal use 64, such. B. a building temperature, a hot water treatment, a Gebäudeluftbefeuchtung or for fresh air preheating and / or as (partial) energy source for a Heizwasserspeicher 76 (see Fig. 5 and 8th ) are used. As in Fig. 5 shown schematically, a heat recovery 66 from different sources, eg. B. with the heat flow 68 and 69 indicated from the return of the supply circuit K3 and / or K2 and / or but with the heat flow 63 indicated from the heated in the region of the pressure units ambient air or the heated product stream. In particular, the temperature of the components 43; About temperature control and heat recovery causes the press only in a relatively small amount of waste heat to the surrounding air and / or to a copy stream of the printed matter produced by her, so fed by energy sources 67 in the printing press energy, especially electrical energy , from Z. B. several kVA is used with high efficiency.

The heating water tank 76 has z. B. a capacity of about 1 m ³ per printing tower 73 (see below) and performs the tempering 57; 58 of the printing cylinder 43; 47 and / or the anilox roller 54 for a comparatively short time of z. B. 3 to 4 Minutes when booting the printing press the stored temperature control with a temperature T1 z. B. between 50 ° C and 70 ° C, to the temperature on the lateral surface of the printing cylinder 43; 47 and / or the anilox roller 54 at least for the time of startup of the printing press to at least 50 ° C, z. B. 55 ° C set. Due to the elevated temperature T1 of the temperature control from the heating water tank 76, the printing press is brought to its operating temperature in a short time, which has a favorable effect on the quality of the printed products produced during the start of the printing press. The output of start-up waste is thereby reduced.

Subsequent embodiments for the control of the temperature and the supply of temperature control are particularly advantageous in conjunction with one or more of the aforementioned design features, such. B. with the color density control loop i.V. with the evaluation unit 23 and / or with the temperature of the anilox roller 54 as a function of the speed and / or with the temperature of the forme cylinder 43 as a function of the speed. For details, reference is made to the above.

The supply of the components 43; 54 with temperature control carried out according to Fig. 8 via decentralized supply devices 71, which together with (on-site) control electronics 72 form, for example, a decentralized adjustment device 37 for one or more printing units 41. Preferably, the adjusting device 37 or the supply device 71 is assigned to a group of printing units 41, which together form at least one printing unit 73. For example, the printing unit 73 represents the group of all printing units 41 associated with a web to be printed and / or forms a printing tower 73 Fig. 8 on the right side, a first section with a printing tower 73 and a folding apparatus 74 and on the left side a second section with two printing towers 73 and an associated folding apparatus 74 are shown. The supply device 71 can now one or more adjacent printing towers 73 be assigned to a section. In this supply device 71 are described in detail below supply lines and control valves for the targeted supply of components to be tempered 43; 54 with the required temperature control of the appropriate temperature level.

The supply device 71 or the associated control electronics 72 receives from a higher-level control device 75, z. B. a implemented in the machine control or a control computer logic, either directly above the target or target temperatures T _i , after, as described above there on the basis of deposited dependencies A; B were determined, or the control electronics 72 receives at least data on the color type F and / or the production speed V, which enables a logic implemented in the control electronics 72 to set the target or target temperature T _i, based on then stored there dependencies A; B to determine.

The decentralized in the printing press system near the pressure tower arranged supply units 71 are now connected to a first supply circuit K1, z. B. circuit K1 connected, which supplies the supply unit 71 purely for heating purposes with temperature control of a first temperature level T1 above the ambient temperature. This temperature control can either be heated as needed, as done for example in a water heater. Advantageously, however, a correspondingly tempered supply in a memory 76, z. B. a Temperiermittels memory 76 and a Heizfluidspeicher 76, in particular a Heizwasserspeicher 76, already held. On the energy supply in this or the heating is not discussed here. This can be done by conventional heating systems, with or without waste heat on the press. In an advantageous embodiment with waste heat recovery, at least a portion of the heating energy for the memory 76, for example, by a heat recovery 66, in particular z. B. a heat recovery 66 according to or similar to Fig. 13 with heat pump 121, are applied. A the temperature control in the circulation K3 transporting pump 70 (see Fig. 11 ) can be advantageously provided in a line branch of circuit K3 or in the range of Heizwasserspeicher 76.

Next, the supply unit 71 least connected to a second circuit K2, which supplies the supply unit 71 for temperature control with temperature control of a second temperature level T2, which, depending on the current requirement, but in principle in a range of z. B. between 5 ° C and 30 ° C, advantageous 8 to 25 ° C, in particular 10 to 15 ° C may be. Depending on the requirements of the desired component temperature is then more or less tempering from this supply circuit K2 a the component 43; 54 tempering temperature control circuit vehicle; KRW (see below) mixed. To provide the temperature control, a cooling device 77, z. B. a refrigeration unit 77, at least one corresponding cooling process (also Temperiermittelquelle), but advantageously two different energetically cooling processes (Temperiermittelquellen) on. Advantageously, the temperature control of these levels, however, in direct or indirect dependence on the level of outdoor temperature and requested by the printing press temperature T2 optionally from the mutually different cooling processes or Temperiermittelquellen the refrigerator 77 or usually a specific mixture of temperature control of the two in energy terms different cooling processes come (see below). Further details of how this is provided by a cooler 77 will become more apparent below Fig. 11 received. A pump 80 transporting the temperature control medium in the circuit K 2 can advantageously be provided in a line branch of the supply circuit K 2 in the supply unit 71, but also in the refrigeration device 77.

In an in Fig. 8 in the right part of the figure shown in dashed lines a third circuit K3 is provided, which is also supplied by the refrigeration device 77. The refrigeration device 77 (see below) provides, for this supply circuit K3, temperature control means of a 'middle' temperature level T3 which is in a relation to the circuit K2 higher temperature range of z. B. 20 to 35 ° C, in particular 24 to 30 ° C, is located. The request or definition of the desired temperature level T3 to the refrigeration device 77 is carried out by a computing and / or control device 100 of the printing press to a logical unit 92, z. B. Control 92 of the refrigeration device 77 (see Fig. 11 ). The computing and / or control device 100 and the control device 75 may be designed as a control device or be components of the same control device.

In an in Fig. 8 and 9 dashed line shown alternative, the circuit K3 is connected to the decentralized supply device 71 and the temperature control is the customers (see below: drives M and / or drive controller) of the printing tower 73 not as above directly, but via the supply device 71, respectively.

Fig. 9 represents an advantageous embodiment of a decentralized supply device 71, which includes at least the two supply circuits K1 and K2 and in one possible embodiment (dashed) the supply circuit K3. The supply device 71 is assigned to a group of n printing units 41, which here are the printing units 41 of a printing tower 73 (eg. Fig. 8 , right) form. For clarity, only two to be tempered cylinder 43, z. B., forme cylinder 43, and two rollers 54, z. B. anilox rollers 54, shown, which ultimately two pressure points, z. B. a double pressure point for the simultaneous two-sided pressure of two mutually employed employee transfer cylinder 47 corresponds in rubber-to-rubber operation.

In the illustrated advantageous embodiment, the preparation of the temperature control in the temperature control circuit KFZ short circuit KFZ the form cylinder 43 in pairs, ie in each case two forme cylinder 43, in particular those of a common double pressure point, are supplied in parallel with the conditioned temperature control. Basically, it is also possible, depending on the requirement, each individual forme cylinder 43 or larger groups (eg four, six or eight) of forme cylinders 43 to assign a temperature control circuit KFZ.

The tempering takes place in such a way that in the temperature control circuit KFZ the temperature control means, driven by a pump 81, rotates and thereby the or the associated (s) to be tempered (s) component (s) 43; 54, in particular their tempering 57; 58, flows through. At the crossing point 82, temperature control agent from one of the supply circuits K1 (for heating purposes) or K2 (for cooling purposes) can be metered in and an adequate amount can be discharged at the intersection point 83. The selection of the temperature control medium to be metered takes place via the position (open or closed) of valves 78, remotely operable switching valves 78 in corresponding, with the supply circuits K1; K2 connected line branches. After merging the line branches, the metering of the selected temperature control in the temperature control KFZ via a, in particular remotely operated driven, metering valve 79. At the intersection 82 now mixes the metered amount with the circulating in the temperature control KFZ temperature control, the rapid mixing in addition by a not shown Verwirbelungskammer between junction 82 and pump 81 can be accelerated.

A setpoint for a temperature of the component 43; 54 (explained here on a pair of forme cylinders representative of individual or groups of forme cylinder 54 or anilox rollers 54) can in principle be generated in a very wide variety of ways and should now be used in the supply device 71 for this component 43; 54 are implemented. Advantageously, the specification of the target or target temperature T _{i, should} be tempered component 43; 54 as above too Fig. 6 and 7 explained in dependence on the production speed V, z. B. in addition also the color type used F and / or paper type can be considered. In the simplest version of the control loop, the conversion is now carried out in such a way that at least one measured value m2 for the temperature of the Temperiermittels just before entering the component 43; 54 and / or a measured value m3 for the surface temperature of the component 43; 54 itself, z. B. as measured value m3 of a directed onto the roll surface infrared sensor, and is compared in the control electronics 72 with the relevant target value. Depending on the deviation, temperature control agent from one of the supply circuits K1 or K2 is metered into the circulation system KFZ (or KRW, see below) via the metering valve 79. The selection of the required circuit K2; K3 (temperature level T1 or T2) is effected by a corresponding setting command S1; S2 from the control electronics 72 to the switching valves 78 (eg, one closed and the other opened), the dosage of the required injection quantity via a control command S from the control electronics 72 to the metering valve 79th

Significantly faster an advantageous development of the described control circuit reacts with a measured value m1 for the temperature shortly after admixing at the crossing point 82, in particular after a swirling chamber and before the pump 81, a measured value m2 of the temperature of the temperature just before entering the component 43; 54 (already in the area of the corresponding printing unit 41) and / or a measured value m3 (of an infrared sensor) for the surface temperature of the component 43; 54 or the color located thereon itself and a measured value m5 for the temperature of the temperature control in the return (already back in the supply device 71) before the crossing point 83. In development can also additionally a measured value m4 shortly after exiting the component 43; 54 (still in the area of the corresponding printing unit 41) be included. These measured values m1 to m3 and m5 and possibly m4 are now processed together in a multi-cascaded control loop, taking into account runtime corrections and pilot control elements, as described, for example, in US Pat WO 2004/054805 A1 is described in detail and their disclosure content in this context is hereby incorporated by reference. Especially when using the measured value m1 shortly after the metering point, if necessary after a Verwirbelungsstrecke but before the pump 81, it allows the reaction time, taking into account control information significantly compared to a scheme for example, which only uses measured values m3, m4 or m5 for regulation. The result of an intervention is not noticed and considered very late in the latter case.

Measured values m6 and m7 for decreasing the temperatures in the supply lines of the supply circuits K1 and K2 are also advantageously taken off and supplied to the control electronics 72 for consideration.

Structure and effect of a temperature control circuit KFZ; KRW was only using the example of the forme cylinder 43 in Fig. 9 described. However, this is also to be applied to the other temperature control circuits KFZ other of the supply device 71 associated with the form cylinder 43 and the temperature of the anilox rollers 54.

In the example, the anilox rollers 54 are each tempered individually by a number of I own controllable temperature control circuits KRW short cycle KRW, which are connected to the two circuits K1 and K2. This has the background that hereby for each individual screen roller 54, the amount of ink to be transported is adjustable for itself. To be on the safe side, the temperature control circuits KRW of two anilox rollers 54 of a double pressure point are connected to one another via lockable ByPass lines. For this purpose, corresponding valves 84 are provided. If, for example, a pump 81 or metering valve 79 fails in one of the two interconnected circuits KRW, the temperature control of the component 43 threatened by the failure can temporarily take place after opening and closing corresponding valves 84; 54 are taken over by the corresponding circuit KRW with. The same is indicated by dashed lines for the circulation of motor vehicle form cylinder 43, in which case the tempering of two affected by the failure of the form cylinder 43 is taken over by an adjacent circuit KFZ two other form cylinder 43 with.

In the event that the circuit K3 is also coupled to the supply device 71, For example, the principle of admixing temperature control medium from circuit K3 into a temperature control circuit KAN short circuit KAN, by which one or more groups of drives M of pressure unit 73 are heated, can be transmitted (see dashed representation of K3 in FIG Fig. 9 ). In this case, the treatment is controlled for example by the associated metering valve 79 in response to the measured value m1 of this circuit KAN directly behind the feed and / or the measured value m5 in the return. Since no heating is required here, the temperature control circuit KAN is only connected to a supply circuit K3. Since the drive temperature control is less critical than that of the forme cylinder 43 or rollers 54, here a larger number of n drives M can be tempered by a common circuit KAN. It may be advantageous if a number of m = 2 circuits KAN are provided, each of which supplies one half (left or right side of a printing unit 73 or printing tower 73, respectively (see FIG Fig. 10 ).

In the two circuits K2 and K3, the supply and discharge lines in the region of their refrigeration device 77 far end are preferably connected to each other via at least one Byepass line which can be opened or closed by means of switchable valves 85. With very low Temperiermittelabnahme through the circuits KFZ and KRW this valve 85 can be opened to maintain a sufficient fluid flow and thus vorzuhalten a properly tempered temperature control in the supply line for the circuits KFZ and KRW. Advantageously, two or more Byepass line per cycle K1; K2 with valves 85 different flow cross sections or per circuit with respect. Its flow rate controllable valve 85 can be used. Thus, the circulating amount can be adjusted as needed graded.

Preferably, at least a small amount of temperature control agent always circulates in the circuit K2, so that the reaction time is as short as possible, if required, by a temperature control medium of appropriate temperature.

In Fig. 10 is an advantageous embodiment of a printing tower 73 with a number of i = 8 printing units 41, which here a number of h = i / 2 = 4 double printing or double printing units 62 for the simultaneous two-sided printing with two mutually employed transfer cylinders 47 in rubber against Form rubber operation. The pressure tower 73 is associated with the supply device 71 with control or regulating device 72. As explicitly shown only for the lowest of the four double printing units 62, each anilox roller 54 of the printing tower 73 has its own circuit KRW. The form cylinders 43 belonging to the same double printing unit 62 have a common circulation motor vehicle in pairs. All rotary drives M, in particular mechanically independent drives M, the anilox rollers 54 and form and transfer cylinder 43; 47 of a same side of the printing substrate 49 are connected to a common circuit K3. Thus, for the present printing tower, 73 k = 4 cycles of the motor vehicle, I = 8 cycles KRW and m = 2 cycles of KAN according to FIG Fig. 9 , Preferably, all form and transfer cylinders 43; 47 and anilox rollers 54 as drives M from each other mechanically independent drives, so that each circuit KAN a number of n = 12 drives M are tempered.

To supply the printing press or the supply devices 71 with temperature control means of the second circuit K2 and advantageously also of the third circuit K3, the refrigeration control center 77 is provided. In a particularly advantageous embodiment, the refrigeration unit 77, as in Fig. 11 shown, designed as a combination system, which two coupled cooling processes 86; 87, namely a first process 87 with a device 89, 90, 91, z. B. chiller 89, 90, 91, for generating compression refrigeration and a second process 86 with a device 88 for cooling by means of ambient or outdoor air. The first process 87 is designed to cool a temperature control medium to a temperature level T _k below the ambient or external temperature. However, it is essential here that the processes 86; 87 are coupled to each other such that the two above-mentioned circuits K2; K3 through both processes 86; 87 can be supplied with cold. This supply can, depending on the requirement of the requested temperature level T2; T3 of the relevant circuit K2; K3 optionally by one or the other process 86; 87 or in particular by combining the two processes 86; 87 done. For this purpose, an intelligent controller 92 for providing the temperature control for the circuits K2; K3 provided with optimal use of the device 88 for cooling by ambient or outdoor air.

The second process 86 has, in a first coolant or fluid circuit 93, the means for cooling by means of ambient or fresh air, in short free-cooling device 88, which can be designed, for example, as a convection cooler with or without evaporator. The energy exchange takes place by thermal contact between the fluid of the fluid circuit 93 and the ambient air and, in the case of additional spraying with water, moreover exploits the evaporation cold. The free cooling device 88 is thermally on the output side via the fluid -. B. via a respective heat exchanger 94; 96 - to the circuits K2; K3 coupled. In particular, it is coupled to the returns of the two circuits K2; K3, which after passing through the heat exchanger 94; 96 via controllable valves 103; 104 partial streams 106; 107 for re-feeding into the two circuits K2 and K3 are removed. The more or less large decoupled partial flow 108 as required; 109 is brought into thermal contact with the first process 87 before the required amount of fluid cooled in this process 87 is passed through the valves 103; 104 in the circuits K2; K3 is fed. To control the heat exchanger 94; 96 on the side of the fluid circuit 93 passing through the volume flow is z. B. in each case a controllable valve 97; 98 provided which the fluid flow in a heat exchanger 94; 96 flows through and divides a flowing in the return to the device 88 stream. The promotion of the fluid takes place z. B. each heat exchanger branch by a pump 99th

The first process 87 is provided to remove the fluid of the disengaged substreams 108; 109 lower to a temperature level T _k below ambient temperature and for reconnection in the circuits K2; To provide K3. For cooling, the first process 87 in a fluid circuit 101, z. As refrigerant, the means 89, 90, 91 for generating compression refrigeration, which a compressor 89, z. B. as a compressor 89, a radiator 91, z. B. as a free cooling device 91, and a relief valve 90 has. The device 89, 90, 91 or the first process 87 is thermally coupled behind the expansion valve 90 on the output side with the circuits K2 and K3. In particular, the process 87 via the heat exchanger to substreams 111; 112 coupled to the Rückspeisdung previously decoupled and then cooled fluids in the two circuits K2 and K3. Between heat exchanger 102 and the valves 103; 104 may advantageously be arranged a memory 113, from which the partial streams 111; 112 are served and in which the decoupled substreams 108; 109 are led. Thus, fluid can be continuously pumped out of the reservoir 113 through the heat exchanger 102 in a circuit via a pump 114 and, on the other hand, cooled fluid can be withdrawn as needed for feeding back into the circuits K2 and K3.

The two returns from K2 and K3 are thus brought first to the second process 86 in thermal contact before they _should depending on the requirements of the respective target temperatures T2; T3 _should be able _{to be} divided into two sub-streams, with one sub-stream again equal to the supply stream of the relevant circuit K2; K3 is fed while the other substream is brought into thermal contact with the first process 87 before, in this process 87, cooled fluid also enters the supply stream of the respective circuits K2; K3 is fed back. The respective ratio between the currents 106 to 111 and 107 to 112 is set by the controller 92 and can basically from 0% to 100% to 100% to 0% of the feed stream 116 respectively set; 117, ie the feed stream 116; 117 may consist of a mixture of the two partial flows 106 and 111 or 107 and 112 or be provided only from one of the partial streams 106 or 111 or 107 or 112.

Especially in the event that as mentioned above and in Fig. 8 and 9 for the circuit K3 shown by solid lines, this is not processed and conveyed in the supply device 71, a pump 95 may be provided in the supply stream 116 of the circuit K3. For the dashed case of the Fig. 9 For example, the corresponding pump 95 may be provided in the supply device 71.

The controller 92 receives from a computing and / or control device 100 of the printing press setpoint temperatures T2 _soll ; T3 _{is intended} for the temperature levels T2; T3 in the flow of the circuits K2; K3 and from a temperature sensor 118, the outside temperature T _A. The computing and / or control device 100 may be part or process of a machine control, a control center computer or else a process in another control device assigned to the printing press. Depending on the setpoint temperatures T2 _should ; T3 _{is intended} and the outside temperature T _A is determined by the controller 92, the cooling strategy and only indicated signal connections, the resulting settings of the respective valve 103; 104, z. B. control valves 103; 104 (and possibly 97, 98) as actuators 103; 104 (97; 98).

The following are exemplary of a specific specification of setpoint temperatures T2 _should ; T3 _should , for. B. T2 _{should be} with a value between 10 ° C and 25 ° C and T3 _{should be described} with a value between 24 ° C and 30 ° C, possible operating situations: If the outside temperature T _{A of} the air, for example, at T _A <about 5 ° C, so the cooling or supply of the connected to the refrigeration device 77 circuits K2, ie the rollers 54 and cylinder 43, to a maximum of about 50% via the process 86, z. The cooling or supply of the connected circuits K3, ie the drives, takes place 100% via the free-cooling device 88. The supply flow 116 is 100% partial flow 106 fed.

With increasing outside temperature T _A to z. B. about 20 ° C, the cooling or supply of connected to the refrigeration device 77 cycles K2 with increasing proportion of the chiller 89, 90, 91 and less and less on the free cooling device 88. The cooling or supply of the connected circuits K3 can still 100% done via the free cooling device 88 when z. B. a target temperature T3 _{is given} by example of 24 to 30 ° C.

If the outside temperature T _A z. B. at about 20 - 24 ° C, the cooling or supply of connected to the refrigeration device 77 circuits K2 z. B. exclusively via the chiller 89, 90, 91, the feed stream 117 in the circuit K2, for example, 100% of the partial flow 112. The cooling or supply of the connected circuits K3 takes place to only part of the free cooling device 88 and another part via the chiller 89, 90, 91.

In the event that the outside temperature T _A z. B. at about 24 ° C and more, the cooling or supply of connected to the refrigeration device 77 circuits K2 and K3 takes place only on the chiller 89, 90, 91.

In addition to the described outdoor temperature influence the specifications for the target temperatures T2 can now _intended; T3 _should , in particular the setpoint temperature T2 _soll , with the machine status of the printing press, in particular with the production speed V, vary. Decisive for the generation of the setpoint T2 _is , however, the lowest required setpoint temperature of all to be supplied by the refrigeration device 77 printing units 41 and their forme cylinder 43 and anilox rollers 54. Compliance with this lowest target temperature must be ensured by the specification of the setpoint temperature T2 _should . When the machine is run up to higher production speeds V, this lowest setpoint temperature for the component 43 to be tempered changes; 54, so can also by the computational and / or Control device 100, the setpoint temperature T2 _{is to be} raised. However, when the setpoint temperature T2 _{is raised} , the above-mentioned threshold temperatures for the different cooling combinations may also shift upwards.

FIGS. 12 and 13 show two advantageous developments in which a part of the heat energy is recovered. These developments can be integrated individually or together in the above-mentioned temperature control.

In the first embodiment ( Fig. 12 ) there is a direct use of the warm return, z. B. at a maximum temperature of 35 to 40 ° C, in particular about 38 ° C, from the circuit K3 for temperature control of the drives M, for example via a fluid gas heat exchanger 119, z. B. a heat exchanger heating coil, for direct air heating in winter operation.

In second embodiment ( Fig. 13 ) takes place using the Temperiermittelrücklaufs from the circuit K2 as a heat source for a heat pump 121. By the heat pump 121 is in a memory 122, a higher temperature level, for. B. reach 55 ° C than in the embodiment according to Fig. 12 However, additional construction and energy expenditure is required.

The two in FIGS. 12 and 13 However, recovery concepts shown can also refer to the other source (K2 or K3) - eg in Fig. 12 on the return of K2 and in Fig. 13 on the return of K3. The systems can also act as a source on the heat 63 (see Fig. 5 ) To fall back on.

LIST OF REFERENCE NUMBERS

01

printing unit

02

printing unit

03

printing unit

04

printing unit

05

-

06

form cylinder

07

form cylinder

08

form cylinder

09

form cylinder

10

-

11

transfer cylinder

12

transfer cylinder

13

transfer cylinder

14

transfer cylinder

15

-

16

Impression cylinder, transfer cylinder

17

Impression cylinder, transfer cylinder

18

Impression cylinder, transfer cylinder

19

Impression cylinder, transfer cylinder

20

-

21

Print carrier, printing sheet, material web, paper web

22

Image sensor, color camera, semiconductor camera, area camera

23

Evaluation unit, computer system

24

data line

25

-

26

data line

27

Lighting device, flashlight lamp

28

display

29

discard pile

30

-

31

data line

32

encoders

33

Input and output unit

34

Storage

35

-

36

Connection of a company network

37

Adjusting device, control device, regulating device

38

-

39

-

40

-

41

printing unit

42

inking

43

Rotary body, cylinder, printing cylinder, forme cylinder, component

44

Printing form, planographic printing form, waterless planographic printing plate, printing plate

45

-

46

Impression cylinder, transfer cylinder

47

Rotary body, cylinder, printing cylinder, transfer cylinder

48

Elevator, blanket

49

Substrate, substrate web

50

-

51

bruise

52

paint supply

53

Rotary body, roller, applicator roller, component

54

Rotary body, roller, anilox roller, component

55

-

56

Photoelectric sensor, image sensor, CCD camera

57

Tempering device (54)

58

Tempering device (43)

59

thermal sensor

60

-

61

Reservoir, color box

62

Double printing unit, double printing unit

63

Heat flow for recovery

64

Use, internally

65

-

66

Heat recovery

67

energy

68

Heat flow for recovery

69

Heat flow for recovery

70

pump

71

supply

72

Control device, control electronics

73

Printing tower, printing unit

74

folding

75

control device

76

Storage tank, temperature control tank, heating water tank

77

Cooling device, cooling center

78

switching valve

79

metering valve

80

pump

81

pump

82

intersection

83

intersection

84

Valve

85

Valve

86

Cooling process, process, second

87

Cooling process, process, first

88

Device, free cooling device

89

Compressor, compressor

90

expansion valve

91

Cooler, free cooling device

92

Unity, logical, control

93

Coolant or fluid circuit

94

heat exchangers

95

pump

96

heat exchangers

97

Valve, adjustable, control valve, actuator

98

Valve, adjustable, control valve, actuator

99

pump

100

Calculating and / or control device

101

Fluid circuit

102

heat exchangers

103

Valve, adjustable, control valve, actuator

104

Valve, adjustable, control valve, actuator

105

-

106

partial flow

107

partial flow

108

partial flow

109

partial flow

110

-

111

partial flow

112

partial flow

113

Storage

114

pump

115

116

power supply

117

power supply

118

temperature sensor

119

Fluid-gas heat exchanger

120

-

121

heat pump

122

Storage

A

Dependency, form cylinder

B

Dependency, anilox roller

D1

Color density, is

D2

Color density, target

F

color type

M

Drive, components

V

production speed

T _{i, shall}

Target temperature, target temperature

T _{j, shall}

Target temperature, target temperature

K1

Supply cycle, circulation

K2

Supply cycle, circulation

K3

Supply cycle, circulation

T1

Temperature, temperature levels

T2

temperature levels

T3

temperature levels

KAN

Temperature control circuit, circuit (M)

motor vehicle

Temperature control circuit, circulation (43)

KRW

Temperature control circuit, cycle (54)

m1

reading

m2

reading

m3

reading

m4

reading

m5

reading

m6

reading

m7

reading

S

adjusting command

S1

adjusting command

S2

adjusting command

Claims (20)

1. Method for adjusting a transfer of printing ink, a first roll (54) arranged in a printing couple (42) of a printing press transferring printing ink to a form cylinder (43), a set temperature (T_{j, soll}) being set on its lateral surface using a temperature control device (57) of the first roll (54) and/or a set temperature (T_{i, soll}) set on its lateral surface using a temperature control device (58) of the form cylinder (43), the temperature control device (57) of the first roll (54) and/or the temperature control device (58) of the form cylinder (43) in each case being controlled or regulated by an adjusting device (37), ink-specific curves or support points for various printing inks or ink types being stored in a storage unit (34) of the adjusting device (37) at least for a connection between a production rate (V) of the printing press and the respective set temperature (T_{i, soll}; T_{j, soll}) on the lateral surface of the form cylinder (43) or on the lateral surface of the first roll (54), characterized in that a change in the adjustment of the respective set temperature (T_{i, soll}; T_{j, soll}) on the lateral surface of the first roll (54) and/or of the form cylinder (43) accompanying a change in the value of the production speed (V) of the printing press is begun before the new value for the printing press of its production speed (V) is adjusted.
2. Method according to Claim 1, characterized in that at least the respective relationship between the production speed (V) of the printing press and the respective set temperature (T_{i, soll}; T_{j, soll}) on the lateral surface of the form cylinder (43) or on the lateral surface of the first roll (54) for various printing inks or ink types is shown graphically in the display and/or input mask on the monitor of an input and output unit (33).
3. Method according to Claim 1, characterized in that at least the respective relationship between the production speed (V) of the printing press and the respective set temperature (T_{i, soll}; T_{j, soll}) on the lateral surface of the form cylinder (43) or on the lateral surface of the first roll (54) is selected in the display and/or input mask on the monitor of the input and output unit (33) from a set of ink-specific curves or support sites laid down for various printing inks or ink types.
4. Method according to Claim 1, characterized in that at least the relationship between the production speed (V) of the printing press and the respective set temperature (T_{i, soll}; T_{j, soll}) on the lateral surface of the form cylinder (43) or on the lateral surface of the first roll (54) indicated in the display and/or input mask on the monitor of the input and output unit (33) for a selected printed ink or a selected ink type is changed by an input and/or selection in the display and/or input mask.
5. Method according to Claim 4, characterized in that the change in the indicated relationship between the production speed (V) of the printing press and the respective set temperature (T_{i, soll}; T_{j, soll}) on the lateral surface of the form cylinder (43) or on the lateral surface of the first roll (54) having taken place by the input and/or selection is changed within fixed limits.
6. Method according to Claim 4, characterized in that the change in the indicated relationship between the production speed (V) of the printing press and the respective set temperature (T_{i, soll}; T_{j, soll}) on the lateral surface of the form cylinder (43) or on the lateral surface of the first roll (54) having taken place by the input and/or selection is stored in the storage unit (34).
7. Method according to Claim 4, characterized in that the change in the indicated relationship between the production speed (V) of the printing press and the respective set temperature (T_{i, soll}; T_{j, soll}) on the lateral surface of the form cylinder (43) or on the lateral surface of the first roll (54) having taken place by the input and/or selection applies the respective set temperature (T_{i, soll}; T_{j, soll}) to the lateral surface of the form cylinder (43) or to the lateral surface of the first roll (54) with a temperature offset.
8. Method according to Claim 4, characterized in that the change in the indicated relationship between the production speed (V) of the printing press and the respective set temperature (T_{i, soll}; T_{j, soll}) on the lateral surface of the form cylinder (43) or on the lateral surface of the first roll (54) having taking place by the input and/or selection changes the relationship between the production speed (V) of the printing press and the respective set temperature (T_{i, soll}; T_{j, soll}) on the lateral surface of the form cylinder (43) or on the lateral surface of the first roll (54) originally stored in the storage unit (34).
9. Method according to Claim 1, characterized in that the temperature control devices (57; 58) adjust a parameter of the printing ink.
10. Method according to Claim 1, characterized in that using the set temperature (T_{j, soll}) adjusted on the lateral surface of the first roll (54) a first parameter of the printing ink is adjusted and using the set temperature (T_{i, soll}) adjusted on the lateral surface of the form cylinder (43) another, second parameter of the same printing ink transferred to the form cylinder (43) is adjusted.
11. Method according to Claim 10, characterized in that the first parameter of the printing ink adjusted on the lateral surface of the first roll (54) relates to its viscosity.
12. Method according to Claim 10, characterized in that the second parameter of the printing ink adjusted on the lateral surface of the form cylinder (43) relates to its tackiness.
13. Method according to Claim 1, characterized in that the adjustment of the set temperature (T_{j, soll}) on the lateral surface of the first roll (54) and the adjustment of the set temperature (T_{i, soll}) on the lateral surface of the form cylinder (43) are performed selectively.
14. Method according to Claim 1, characterized in that the adjustment of the set temperature (T_{j, soll}) on the lateral surface of the first roll (54) is performed independently of the adjustment of the set temperature (T_{i, soll}) on the lateral surface of the form cylinder (43).
15. Method according to Claim 1, characterized in that carrying out the adjustment of the new value of the production speed (V) is delayed until the first roll (54) and/or the form cylinder (43) reaches in full or at least to a considerable extent the set temperature (T_{i, soll}; T_{j, soll}) to be adjusted for the new value of the production speed (V) on the respective lateral surface.
16. Method according to Claim 11 or 12, characterized in that the viscosity and/or the tackiness of the printing ink is used for influencing the amount of ink to be transported from a reservoir (61) of the printing ink to a print substrate (49).
17. Method according to Claim 11, characterized in that with the adjustment of the viscosity a capacity of the first roll (54) diminishing with increasing production speed (V) of the printing press for the transfer of printing ink to a rotating body (53) adjacent to the first roll (54) is compensated by a lowering of the viscosity of the printing ink brought about by the set temperature.
18. Method according to Claim 11, characterized in that with the adjustment of the viscosity a feed rate of the first roll (54) is kept approximately constant in the case of a change in the production speed (V) of the printing press.
19. Method according to Claim 12, characterized in that the tackiness influences a separation of the printing ink between printing and non-printing areas of the printing form (44).
20. Method according to Claim 12, characterized in that the tackiness influences the severity of picking on interaction of an inking cylinder (43; 47) with the print substrate (49).

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