EP2416964B1 - Roller rotary offset printing press and method of using a roller rotary offset printing press - Google Patents

Description

The invention relates to a roll-rotary offset printing machine according to the preamble of claim 1 and to a method for using a roll-rotary offset printing machine according to the preamble of claim 14.

In the production of printed products, it is a known procedure to coat these printed products with a lacquer layer. As a result, on the one hand a protective effect is achieved, because it is previously fixed to a substrate applied color and discoloration or smearing of the color, for example, on parts of a printing press, on other printed products or on the hands of a person handling the printed products, is prevented. On the other hand results in a higher quality appearing printed product, because by a variety of different paints different effects are possible. For example, it is possible to use glossy or matt paints that completely or partially cover the printed product. Scented coatings, which release a fragrance stored in tiny capsules with slight friction, or paints with a metallic or glitter effect are known. This results in a metallic effect by a variety of contained in the paint, shiny metallic particles, while a glitter effect is due to a variety of contained in the paint, for example, iridescent and / or fluorescent, rather larger particles.

Various paint systems are known, for example those which contain a catalyst which triggers a crosslinking reaction of the substances contained in the paint. This catalyst can be activated, for example, by means of UV or electron irradiation. Other methods require a dryer that uses infrared radiation or hot air to dry the paint. The drying of such "heatset coatings" thus proceeds analogously to the drying of "heatset inks" which likewise require a dryer in which, for example, the excess liquid components of the paint are vaporized by means of hot air. Since in this case the printing substrate is heated, a device is usually required in addition, which cools the substrate web again. The use of such paints thus requires a relatively high expenditure on equipment. By the DE 102 07 184 A1 For example, a printing machine is known which does not use "heatset inks" and therefore does not include a "heatset dryer" and cooling device. An optional printing unit for applying a seal in this printing machine is followed by either an IR, a UV or an electron beam dryer, which may be provided with a thermal doctor blade. An applied amount of paint is not specified.

By the WO 2007/087531 A2 a method is known in which a printed in the "coldset" process, web-shaped substrate is coated on both sides with a water-based paint within a short time, which dries by breaking away the liquid portion of the paint in the substrate. By the coating process, no corrugation of the substrate occurs and both a greasing of the ink from the substrate and a gluing of the printed products is avoided. As an important parameter for the formation of these properties, the applied lacquer mass per surface of the printing material is specified.

The DE 102 06 601 discloses a coating unit of a printing press, which comprises a, a water-based paint-containing pan and an anilox roller, wherein the anilox roller has a plurality of, jointly forming a scoop volume, depressions in its lateral surface and wherein the coating unit along a transport path of, from the printing press and the coating unit processed, substrate, is arranged according to a printing unit of the printing press, wherein, along the transport path of the printing material, after the coating unit, apart from guide rollers or other, a Printing unit of the printing machine is arranged, wherein, along the transport path of the printing material, after the coating unit, apart from guide rollers or other, a transport direction of the printing material changing devices, as the next device a folder and / or a cutting device is arranged on the printing material acting. An applied lacquer layer is dried by means of a drying device.

The EP 0 930 161 B1 discloses a coating unit of a rotary-rotary offset printing machine, which comprises at least one, a water-based paint, chambered doctor blade and at least one anilox roller, wherein at least one anilox roller, a plurality of, together forming a scoop volume, recesses in its lateral surface and wherein the coating, along a transport path of a, processed by the rotary-rotary offset printing press and the coating, printing material, is arranged according to a printing unit of the rotary web offset printing machine, wherein, along the transport path of the printing material, after the coating, apart from guide rollers or others, a transport direction Changing the printing material, devices, as a next device, a folding device and / or a cutting device is arranged acting on the substrate. It is essential that an application of the paint is performed in opposite directions of the anilox roller with respect to the printed substrate.

By the US 4 574 732 A is a coating known, with the paint is transferred by a lubricating process to a substrate. By means of swivel arms rollers can be pressed against a counter-pressure roller. Substrate is fed through two painting nips with one horizontal and one vertical component.

The invention has for its object to provide a rotary-rotary offset printing machine and a method of using a rotary-rotary offset printing machine.

The object is achieved by the features of claim 1 and the features of claim 14.

The advantages which can be achieved with the invention are, in particular, that the printed products treated with the coating unit have a multiplicity of the advantages which can typically be achieved by means of coating installations, in comparison to unpainted printed products, such as gloss and contrast improvement and greatly reduced Lubrication and high-quality paper, although the coating is also relatively simple and requires no downstream dryer. Thus, by using cheaper paper, costs can be reduced.

Another advantage is that a risk of smearing of printing inks or paint on a substrate is reduced, because all occurring contacts between participating anilox rollers of the coating and / or application rollers of the coating and / or counter-pressure rollers of the coating and / or transfer cylinders and / or Substrate are rolling contacts. This gentle treatment facilitates drying without a dryer, since no dryer is necessary to protect freshly applied printing inks or lacquers from smearing.

Another advantage is that, by means of an arrangement of rollers forming a painting nip, such that a point containing one of its axes of rotation and a roller associated with the other axis of rotation and within a volume of the roller associated with that other axis of rotation is in a plane inclined at less than 45 ° to the horizontal an arrangement of the coating unit at a particularly favorable location within a printing press, in particular on a printing unit and / or a printing tower is made possible without complicating a web guide and / or so that unnecessarily many guide rollers before painting with a printed image in Come in contact.

It is also advantageous that not only less space is required by the elimination of the dryer, but also investment and ongoing costs can be saved, such as energy or maintenance costs.

Another advantage is that the relatively small footprint retrofit existing printing presses is possible. For example, that can Lackierwerk be inserted into the superstructure of a printing press. The space required is also low, because no dryer is arranged, a distance between the printing unit and coating unit is relatively small and the coating unit is relatively simple and compact

Another advantage is the elimination of volatile organic compounds and other, such as environmentally hazardous substances, such as may occur in paints that need to be dried by means of UV radiation. There is thus no special waste.

Another advantage is that the paint arranged in the coating unit is a water-based lacquer which dries so fast, for example, by striking that the coating unit can be arranged in a roll rotary offset printing machine, without a transport speed of a printing material being smaller. than the usual with this printing unit without active coating unit transport speed of the printing substrate of about 12 - 15 m / s. Thus, there is no speed penalty over Lackierwerken that work for example with a UV coating system. A transport path after applying the paint is thus kept small.

Another advantage is that is prevented by a storability of a standing in contact with an at least partially coated side of the printing material in that at a standstill of the substrate, especially in an emergency shutdown of the coating and / or the printing press, the substrate at the corresponding Stick roller. A direction of a corresponding Abstellbewegung is chosen so that it can be achieved by a simple construction as possible, so for example, a linear movement and / or pivotal movement with components exclusively in directions perpendicular to axes of rotation of components of the coating.

Another advantage is that, in conjunction with a previous printing of a substrate by means of a printing unit exclusively with dry offset inks, a particularly fast repelling of the liquid portions of the disposed paint occurs, whereby reductions in the printing material web speed can be further avoided. This advantage arises from the fact that the substrate has not come into contact with water-containing material until the application of the paint and thus still has a very high absorbency.

Another advantage is that, in connection with a previous print with "coldset colors", no drying device is required for the entire production process of the printed products, whereby dryer-related disadvantages, such as a too low moisture content of the printing material, can be avoided in the manufacturing process.

Another advantage is that by limiting a transferred amount of paint by means of a scoop volume of an anilox roller negative effects such as waves in the substrate can be avoided.

Another advantage is that it can be ensured by own drives to the anilox rollers that a transferred amount of paint exactly meets the requirements and not too much or too little paint is transferred. This is further promoted by the existing between all rollers rolling contacts.

Another advantage is that the paint shop, if it is divisible, is more accessible for maintenance and other occasions and in the case of co-operating with the coating unit, divisible printing unit can be shared with this together, resulting in, for example, maintenance of coating unit and printing unit further simplify.

Another advantage is that the coating unit can be designed in various configurations, for example, with few rollers to save costs, or with many rollers, for example, flexographic printing rollers or rollers for double-sided coating order to further increase a Lackierqualität.

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

Fig. 1

eine schematische Darstellung eines Bedruckstoffs und eines Lackierwerks a) bzw. zweier Lackierwerke b) wie in Ausführungsbeispiel 1 beschrieben, enthaltend jeweils eine Kammerrakel und eine Rasterwalze;

Fig. 2

eine schematische Darstellung eines Bedruckstoffs und eines Lackierwerks a) bzw. zweier Lackierwerke b) wie in Ausführungsbeispiel 2 beschrieben, enthaltend jeweils eine Kammerrakel, eine Rasterwalze und eine Gegendruckwalze;

Fig. 3

eine schematische Darstellung eines Bedruckstoffs und eines Lackierwerks a) bzw. zweier Lackierwerke b) wie in Ausführungsbeispiel 3 beschrieben, enthaltend jeweils eine Kammerrakel, eine Rasterwalze und eine Auftragwalze;

Fig. 4

eine schematische Darstellung eines Bedruckstoffs und eines Lackierwerks a) bzw. zweier Lackierwerke b) wie in Ausführungsbeispiel 4 beschrieben, enthaltend jeweils eine Kammerrakel, eine Rasterwalze, eine Auftragwalze und eine Gegendruckwalze;

Fig. 5

eine schematische Darstellung eines Bedruckstoffs und eines Lackierwerks wie in Ausführungsbeispiel 5 beschrieben, enthaltend zwei Kammerrakeln, zwei Rasterwalzen und zwei Walzen, die jeweils sowohl als Auftragwalze als auch als Gegendruckwalze dienen a) und b);

Fig. 6

schematische Darstellungen verschiedener Konfigurationen a) und b) eines variabel einstellbaren Lackierwerks wie in Ausführungsbeispiel 6 beschrieben;

Fig. 7

eine schematische Darstellung eines Druckwerks und eines Lackierwerks, wobei sowohl das Druckwerk, als auch das Lackierwerk teilbar sind und jeweils ein Teil des Druckwerks und ein Teil des Lackierwerks starr miteinander verbunden sind;

Fig. 8

eine schematische Darstellung eines Druckwerks und eines Lackierwerks, wobei das Druckwerk teilbar ist und ein mit einem Teil des Druckwerks starr verbundenes Lackierwerk nicht teilbar ist;

Fig. 9

eine schematische Darstellung eines variabel einstellbaren Druckwerks, mit dem Konfigurationen ähnlich denen oder genauso wie in Fig. 6 erzeugt werden können.

Show it:

Fig. 1

a schematic representation of a substrate and a coating unit a) or two coating units b) as described in Example 1, each containing a chamber doctor blade and an anilox roller;

Fig. 2

a schematic representation of a printing material and a coating unit a) or two coating units b) as described in Example 2, each containing a chambered doctor blade, an anilox roller and a counter-pressure roller;

Fig. 3

a schematic representation of a substrate and a coating unit a) or two coating units b) as described in Example 3, each containing a chambered doctor blade, an anilox roller and an applicator roller;

Fig. 4

a schematic representation of a substrate and a coating unit a) or two coating units b) as described in Example 4, each containing a chambered doctor blade, an anilox roller, an applicator roller and a counter-pressure roller;

Fig. 5

a schematic representation of a substrate and a coating unit such as described in Example 5, comprising two chamber doctor blades, two anilox rollers and two rollers, each serving both as a applicator roller and as a counter-pressure roller a) and b);

Fig. 6

schematic representations of various configurations a) and b) of a variably adjustable coating unit as described in Example 6;

Fig. 7

a schematic representation of a printing unit and a coating unit, both the printing unit, as well as the coating unit are divisible and each part of the printing unit and a part of the coating unit are rigidly connected together;

Fig. 8

a schematic representation of a printing unit and a coating unit, wherein the printing unit is divisible and a rigidly connected to a part of the printing unit coating unit is not divisible;

Fig. 9

a schematic representation of a variably adjustable printing unit, with the configurations similar to those or the same as in Fig. 6 can be generated.

A coating unit 01 of a rotary rotary offset printing machine, comprises at least one formed as an anilox roller 02 roller 02, to which at least one chambered doctor 03 is employed, so that the chambered doctor blade 03 in its interior with its closing squeegee, their working doctor blade, two lateral boundaries, a housing and a part of a lateral surface of the anilox roller 02 forms a closed volume. At least one supply line and one discharge line exist through which paint can be pumped into and out of the volume. Serves at least one pumping device, which is preferably connected to a machine control. In printing operation is arranged in the volume inside the chambered doctor blade 03 varnish and preferably the paint fills this

Volume completely off. More preferably, the supply line, the discharge, the chambered doctor blade 03 and the pumping device with other devices, such as a reservoir, a closed system in which the paint is under a pressure which is higher than an atmospheric pressure.

The anilox roller 02 has its own drive motor, via which it is driven and which is preferably connected to the machine control. In particular, the anilox roller 02 is thus mechanically independent of other anilox rollers 02 or driven by other drive motors of the printing press. A lateral surface of the anilox roller 02 is preferably made of a ceramic material, which may include, for example, alumina (Al ₂ O ₂ ) and / or titanium dioxide (TiO ₂ ) and / or zirconium dioxide (ZrO ₂ ). An engraving in the form of a plurality of depressions is introduced into the lateral surface, preferably by means of a production process which comprises a laser bombardment of the lateral surface of the anilox roller 02 as a step. The depressions can be arranged, for example, in a regular point-like structure, a line structure or a stochastic structure. Lines of such a line pattern are also called Haschuren. A regular-dot-shaped structure is a structure in which individual depressions are located on points of a regular grid.

In the case of a line structure, a density of the lines is 40 to 130 lines per cm. If the coating unit 01 is designed such that a printing substrate 06, for example a printing material web 06, rests directly against the anilox roller 02 during the coating operation, the density of the lines is preferably 90 to 130 lines per cm and more preferably 100 to 120 lines per cm. If the coating unit 01 is designed in such a way that no printing material 06 is applied directly to the anilox roller 02 during the coating operation, the density of the lines is preferably 40 to 80 lines per cm and more preferably 50 to 70 lines per cm. A width and a depth of the individual lines, ie an extent along the lateral surface or perpendicular to the lateral surface of the anilox roller 02, determine predetermined density of lines a total paint volume that can accommodate the anilox 02 in their wells, a so-called Schöpfvolumen. The scoop volume depends on a desired amount of paint that is to be transferred from the anilox roller 02. The scoop volume of the anilox roller 02 is designed so that the paint film transferred to a printing material 06 in the dried state has a surface-related mass of at most 4 g / m ² and preferably of at most 2 g / m ² . In other words, this means that the scoop volume is filled on a part of the lateral surface of the anilox roller 02 with a quantity of paint whose mass, based on this part of the lateral surface of the anilox roller 02 minus an average water content, is at most 4 g / m ² and preferably at most 2 g / m ² . This results in an advantageous behavior of the printing material 06 with respect to corrugations or sticking together of coated printing substrate 06.

Even with a different arrangement of the recesses, for example in a regular-point or stochastic structure, such a defined, adapted to the application Schöpfvolumen is preferred, in particular in the above-mentioned frame. In the painting operation, the anilox roller 02 takes on paint by coming through the rotation of the anilox roller 02, the wells in contact with the arranged in the interior of the chambered doctor blade 03 paint and so filled. Excess paint is stripped in the further rotation of the anilox roller 02 of the working doctor blade and only arranged in the wells paint passes out of the interior of the chambered doctor blade 03. Subsequently, the part of the lateral surface of the anilox roller 02, which has recesses filled with lacquer, comes into contact with the printing substrate 06 or another constituent of the coating unit 01, which may be a roller 07 formed as an applicator roller 07, and transfers lacquer to the Printing material 06 or this other component of the coating 01. The paint is preferably applied to a substrate 06, which has already been printed with color.

For example, the color processed by the printing press may be color for the printer conventional offset printing or preferably dry offset ink and it is preferably already at least partially dried before the paint is applied. Due to the better water absorption capabilities of the printing material 06, which has not come in contact with water before a paint job, the use of dry offset inks is preferred. As substrate 06, for example, paper comes into question. Uncoated and coated paper grades can be used and lighter paper grades typical for coldset printing with a basis weight of up to 50 g / m ² or rather heatset printing paper grades with a weight per unit area of more than 40 are used g / m ² in question. In order to aid in the process of stripping the water content of the paint into the substrate 06, it is preferable to use low-coverage or uncoated paper, for example, having a coating weight of less than 10 g / m ² . If, as preferred, coldset inks are used, it is preferred to use paper that achieves desirable results with these inks.

The arranged in the volume inside the chambered doctor blade 03 is characterized by various properties. He is a dispersion varnish, so a water-based paint. In particular, the paint dries on the substrate 06 mainly by knocking. This means that water and other possibly contained liquid constituents of the paint are absorbed by the printing substrate 06 and solid constituents of the paint remain on a surface of the printing material 06. The paint is such that such a drying process happens relatively quickly, and so fast that the paint, which is located on the substrate 06, dries after his order before the substrate 06 with its painted spot a next contact to another component a printing machine containing the coating 01 has. This ensures that both of the paint-covered paint, as well as the paint itself can no longer lubricate the substrate 06 and even with high color coverage produce clean printed products.

The coating unit 01 is arranged along a transport path of the substrate 06 processed by the printing press and the coating unit 01 for a printing unit 11. Preferably, the printing substrate 06 is transported at an equal speed by the printing press when the coating unit 01 is set up as without an applied coating unit 01, namely at 10 to 17 m / s and preferably at 12 to 15 m / s, without the undried lacquer after it was applied to the substrate 06, with something other than the substrate 06 and the surrounding air comes into contact. A dryer is not necessary for this drying process. Preferably, along the transport path of the printing material 06 between a roller 12 of the printing unit 11 (Wobei with a roller 12 in this context, a cylinder 12 should be referred to.) And a roller 02; 07; 09 of the coating unit 01, which may be an anilox roller 02 or an applicator roller 07, no dryer arranged. Further preferably, no dryer is arranged along the transport path of the printing substrate 06 between the printing unit 11 and a folding apparatus and / or a cutting device, and even more preferred, no dryer is arranged in the printing machine at all. Accordingly, the coating unit 01 follows along the transport path of the printing material 06, apart from, guide rollers or other devices that serve a change in direction of the transport path, directly a former or a folder, a cutting device or other component of the printing press, in and / or of the printing material 06 and / or on or in the printing substrate 06 located inks and / or paints and / or constituents of these paints and / or paints only mechanically, but in no way chemically or by the action of electromagnetic radiation or electron beams or changes in temperatures, be treated. Under a cutting device is also a perforating to understand.

In addition, it is preferable along this transport path of the printing substrate 06 between the roller 12 of the printing unit 11 and a roller 02; 07; 09 of the coating 01, apart from any existing guide rollers, no other part of Pressing the substrate 06 touching arranged. In this way it is prevented that a printed image, which is to be protected by the application of paint against smearing, is already smeared before the application of paint. For this reason, the number of any existing guide rollers in this area is to be kept as low as possible; are preferred between the roller 12 of the printing unit 11 and the roller 02; 07; 09 of the coating 01 at most 2 guide rollers arranged on the substrate 06, more preferably no guide rollers in this area are arranged on the substrate 06. To be able to apply the paint to the substrate 06 as quickly as possible after the application of ink in the printing unit 11 is preferably a smallest dimension between a contacting the substrate 06 roller 12 of the printing unit 11 and a paint-transferring roller 02; 07; 09 of the coating unit 01 along the transport path of the printing material 06 is less than 4 m and more preferably less than 2 m. The lacquer disposed inside the chambered doctor blade 03 can be, for example, a gloss lacquer, a matt lacquer or a milky lacquer, it can also produce a metallic and / or a glitter effect and / or it can be a fragrant lacquer containing fragrances in tiny capsules that are released during friction, for example.

The rotary-rotary offset printing machine comprises at least one machine section, each machine section comprises at least one printing unit and each printing unit comprises at least one printing unit 11. Preferably, each printing unit comprises four printing units 11, which are designed as double offset printing 11, ie in particular two forme cylinder 14 and two with the Form cylinders 14 in contact, serving as a counter-pressure cylinder 12 transfer cylinder 12th

The coating unit 01 may be constructed so that substrate 06 during the painting process vertically or horizontally or obliquely, ie with vertical and horizontal directional components, is transported. Preferably, the printing material 06 is transported in one direction through the coating unit 01 whose vertical component is larger, as its horizontal component and more preferably the printing material 06 is transported exclusively vertically through the coating unit 01, since there are advantages in connection with a vertical web guide in the printing unit 11 cooperating with the coating device 01. It is at least a pair of two rollers 02; 07; 08; 09 are arranged, which together form a Lackierspalt through which the substrate 06 is transported in a painting. These two rollers 02; 07; 08; 09 are arranged such that a first plane including a horizontal plane includes an angle of less than 45 °, and more preferably less than 30 °, and more preferably between 1 ° and 20 °. The first plane is set such that it has an axis of rotation of one of these two rollers 02; 07; 08; 09 includes and that it is a point of a rotation axis of the other of these two rollers 02; 07; 08; 09, which is within one of the other of these two rollers 02; 07; 08; 09 fixed volume. It is possible to arrange the coating unit 01 so that a printing material 06 is fed directly to the coating unit 01 after printing. But it is also possible that between the printing and the coating process further steps for the treatment of the printing substrate 06 take place, such as a combination of several layers of substrate 06 to a substrate strand. The coating unit 01 is preferably arranged directly on a printing unit or in a superstructure of a printing press. Preferably, the coating unit 01 is arranged so that at least one axis of rotation of an anilox roller 09 of the coating 01 is arranged further above, as all axes of rotation of cylinders 14 and other cylinders 12 and rollers 12 in a the coating unit 01 with respect to a transport direction of the printing material 06 upstream printing unit are arranged.

In addition to the components described, the coating unit 01 may also comprise further components, for example the one or more application rollers 07 and / or one or more rollers 08 designed as counter-pressure rollers 08. A number of different exemplary embodiments will be described below. In all embodiments, the peripheral speed of the anilox rollers 02 and / or Application rollers 07 and / or counter-pressure rollers 08 preferably equal to the speed at which the printing substrate 06 is transported in the printing operation by the printing press and in particular by the coating unit 01. The direction of rotation of the anilox rollers 02 and / or applicator rollers 07 and / or counterpressure rollers 08 ensures that only rolling contacts between anilox rollers 02 and / or applicator rollers 07 and / or counterpressure rollers 08 and the printing substrate 06 are possible. This series of embodiments is not exhaustive, other embodiments are also conceivable.

Embodiment 1: "direct, with wrap"; only relevant in connection with exemplary embodiment 2

This embodiment is also in Fig. 1 a) to see. The printing substrate 06 is in printing operation in direct contact with the anilox roller 02. The paint is thus transferred from the wells in the lateral surface of the anilox roller 02 directly to the substrate 06. The transferred from the individual wells paint points are still slightly after their transfer and connect with each other, so that at the desired locations on the substrate 06 a continuous paint surface is achieved. For this purpose, a relatively finely screened screen roller 02 is used, which means that in the case of a line structure, the density of the lines is preferably between 90 and 130 lines per cm. The printing material 06 is pressed by a looping to the anilox roller 02, ie the substrate 06 touches the anilox roller 02 not only on a line parallel to a rotation axis of the anilox roller 02, but the substrate 06 touches the anilox roller 02 flat by a piece along a circumference of the anilox roller 02 is carried. The proportion of the lateral surface of the anilox roller 02, which is in contact with the printing substrate 06 at a time, depends on the angle that the transported to the anilox roller 02 and the transported away from the anilox roller 02 substrate 06 include. This angle also affects the force with which the printing material 06 is pressed against the anilox roller 02.

It is also possible to have two paint shops 01 ( Fig. 1 b) ) to arrange this embodiment, so that the one coating unit 01 painted a first side of the printing substrate 06 and the other coating unit 01 a second side of the printing substrate 06 painted. The printing material 06 is first performed in the painting operation with its one side on the anilox roller 02 of a coating unit 01 and provided with paint, then the other side of the printing material 06 is guided along the anilox roller 02 of the other coating unit 01 and provided with paint. In each of the two contacts between an anilox roller 02 and the substrate 06, a contact force is generated by the wrapping of the printing substrate 06 to the respective anilox roller 02, whereby the paint from the wells of the anilox roller 02 is transferred out to the substrate 06. Since the anilox rollers 02 do not press from both sides against the same location of the printing substrate 06, a location of the printing substrate 06 is not simultaneously painted from both sides in the painting, but between the application of the paint on one side of the printing material 06 and the application of the paint on the other side of the printing material 06 passes a time difference .DELTA.t, which depends on the speed at which the printing substrate 06 is transported and the distance between the anilox rollers 02 from one another.

Exemplary embodiment 2: "direct, with back pressure"

This embodiment is also in Fig. 2 a) to see. The printing substrate 06 is, as in the embodiment 1, provided directly from the anilox roller 02 with paint. The anilox roller 02 is formed as in Embodiment 1 and the transfer of the paint is the same as in Example 1, also here run the transferred paint dots still at the desired locations on the substrate 06 to a continuous paint surface. A counter-pressure roller 08 presses the printing substrate 06 against the anilox roller 02 in order to achieve a better contact between the anilox roller 02 and printing material 06 and thereby to improve the transfer of the paint from the depressions of the anilox roller 02 to the printing substrate 06. Of the Substrate 06 can wrap around the anilox roller 02 and / or the counterpressure roller 08 or even between the anilox roller 02 and the counterpressure roller 08, ie a contact zone between the substrate 06 and the anilox roller 02 can be parallel to the axis of rotation of the anilox roller 02 or flat on the lateral surface the anilox roller 02 be pronounced. The counter-pressure roller 08 is preferably formed on its lateral surface of a relatively soft material to ensure that the substrate 06 is pressed against the anilox roller 02 and the transfer of the paint is improved on the substrate 06. Preferably, the lateral surface of the counterpressure roller 08 has a Shore A hardness between 30 and 70, more preferably, the lateral surface of the counterpressure roller 08 has a Shore A hardness of 60. The material of the lateral surface of the counter-pressure roller 08 may be, for example, rubber or polyurethane.

It is also possible to mount two coating units 01 of this embodiment ( Fig. 2 b) ), so that one coating unit 01 paints a first side of the printing material 06 and the other coating unit 01 paints a second side of the printing material 06. The printing material 06 is first performed with its one side of the anilox roller 02 of a coating unit 01 and provided by the contact pressure of a platen roller 08 with paint, then the other side of the substrate 06 to the anilox 02 of the other coating unit 01 along guided and provided by the contact pressure of a counter-pressure roller 08 with paint. Since the anilox rollers 02 do not press from both sides against the same location of the printing substrate 06 in Lackierbetrieb a point of the substrate 06 is not painted simultaneously from both sides, but between the application of the paint on one side of the printing substrate 06 and the application of the paint on the other side of the printing material 06 passes a time difference .DELTA.t, which depends on the speed at which the printing substrate 06 is transported and the distance between the anilox rollers 02 from one another.

Embodiment 3: "with application roller, with looping"; only relevant in connection with exemplary embodiment 6.

This embodiment is also in Fig. 3 a) to see. The anilox roller 02 is next to the chambered doctor blade 03 also with an applicator roller 07 in contact. The application roller 07 is in turn in rolling contact with the printing material 06. Since the printing material 06 is not in direct contact with the anilox roller 02, in the case of a linear structure of the depressions in the lateral surface of the anilox roller 02, the density of the lines is preferably in the range of 40 to 80 lines per cm. The printing material 06 wraps around the applicator roller 07, so that the contact between applicator roller 07 and substrate 06 is not formed as a line, but as a surface and a contact pressure between the substrate 06 and application roller 07 is generated. Paint is transferred from the interior of the chamber doctor blade 03 via the anilox roller 02 to the applicator roller 07 and from there to the printing substrate 06. The proportion of a lateral surface of the applicator roller 07, which is in contact with the printing material 06 at a time, depends on the angle which the transport transported to the applicator roller 07 and the transported away from the applicator roller 07 substrate 06 include. The applicator roller 07 is preferably formed on its lateral surface of a relatively soft material to ensure that the paint is effectively transferred from the wells of the applicator roller 07 in contact with anilox roller 02 on the lateral surface of the applicator roller 07. Preferably, the lateral surface of the applicator roller 07 has a Shore A hardness between 30 and 70, more preferably, the lateral surface of the applicator roller 07 has a Shore A hardness of 60 on. The material of the lateral surface of the applicator roller 07 may be for example rubber or polyurethane. The applicator roller 07 may also be formed as a Spotlackierwalze so that it can be carried out with a spot-painting. For this purpose, the applicator roller 07 is sized in such a way that its circumference is equal to the circumference of a transfer cylinder 12 in a printing unit 11 of the printing press. In addition, the applicator roller 07 is such that only certain, selectively selectable parts of the lateral surface of the applicator roll 07 accept paint and thus can transfer. In this way it is ensured that for each printed portion of the printing substrate 06, for example, per printed side of a printed product, always an equal part of the Section painted or not painted.

It is also possible to mount two coating units 01 of this embodiment ( Fig. 3 b) ), so that one coating unit 01 paints a first side of the printing material 06 and the other coating unit 01 paints a second side of the printing material 06. The printing substrate 06 is first performed in the painting with its one side of the applicator roller 07 of a coating unit 01 along and provided with paint, then the other side of the printing material 06 is guided along the applicator roller 07 of the other coating unit 01 and provided with paint. In each of the two contacts between an applicator roller 07 and the substrate 06 is generated by the wrapping of the printing material 06 to the respective applicator roller 07, a contact force, whereby the paint is transferred from the applicator roller 07 to the substrate 06. Since the application rollers 07 do not press from both sides against the same location of the printing substrate 06, a location of the printing substrate 06 is painted not simultaneously from both sides in the painting, but between the application of the paint on one side of the printing substrate 06 and the application of the paint on the other side of the printing material 06 passes a time difference .DELTA.t, which depends on the speed at which the printing substrate 06 is transported and the distance between the applicator rollers 07 from each other. The application roller 07 of one or both coating units 01 can be designed so that a spot coating can be carried out with it.

Exemplary embodiment 4: "with application roller, with back pressure"

This embodiment is also in Fig. 4 a) to see. The anilox roller 02 is next to the chambered doctor blade 03 also with an applicator roller 07 in contact. The application roller 07 is in turn in rolling contact with the printing material 06. Since the printing material 06 is not in direct contact with the anilox roller 02, in the case of a linear structure of the depressions in the lateral surface of the anilox roller 02, the density of the lines is preferably in the range of 40 to 80 lines per cm. A Counterpressure roller 08 presses the printing substrate 06 against the applicator roller 07, in order to achieve a better contact between the applicator roller 07 and substrate 06 and thereby to improve the transfer of the paint from the applicator roller 07 to the substrate 06. The printing substrate 06 can wrap around the applicator roller 07 and / or the counterpressure roller 08 or can also be guided in a straight line between the applicator roller 07 and the counterpressure roller 08. The applicator roller 07 is preferably formed on its lateral surface of a relatively soft material to ensure that the paint is effectively transferred from the wells of the applicator roller 07 in contact with anilox roller 02 on the lateral surface of the applicator roller 07. Preferably, the lateral surface of the applicator roller 07 has a Shore A hardness between 30 and 70, more preferably, the lateral surface of the applicator roller 07 has a Shore A hardness of 60 on. The material of the lateral surface of the applicator roller 07 may be for example rubber or polyurethane. The material of the lateral surface of the counter-pressure roller 08 is harder than the material of the lateral surface of the applicator roller 07, preferably has a Shore A hardness of more than 70 and may be, for example, Rilsan. The application roller 07 can also be designed as a spot-coating roller. For this purpose, the applicator roller 07 is designed in size so that its circumference is equal to the circumference of a transfer cylinder in a printing unit 11 of the printing press. In addition, the applicator roller 07 is such that only certain, selectively selectable, parts of the lateral surface of the applicator roll 07 accept paint and thus can transfer. In this way, it is ensured that for each printed portion of the printing substrate 06, for example, per printed side of a printed product, always a same part of the section is painted or not painted.

It is also possible to mount two coating units 01 of this embodiment ( Fig. 4b) ), so that one coating unit 01 paints a first side of the printing material 06 and the other coating unit 01 paints a second side of the printing material 06. The printing material 06 is first performed in the paint shop with its one side on the applicator roller 07 of a coating unit 01 along and provided with paint in the Following the other side of the printing material 06 is guided along the applicator roller 07 of the other coating unit 01 and provided with paint. In each of the two contacts between an applicator roller 07 and a substrate 06 is produced by the respective counter-pressure roller 08, a contact force, whereby the paint is transferred from the applicator roller 07 to the substrate 06. The printing material 06 can each wrap around the applicator roller 07 and / or the counterpressure roller 08 or can also be guided in a straight line between the applicator roller 07 and the counterpressure roller 08. Since the application rollers 07 do not press from both sides against the same location of the printing material 06 in Lackierbetrieb a point of the substrate 06 is not painted simultaneously from both sides, but between the application of the paint on one side of the substrate 06 and the application of the paint on the other side of the printing material 06 passes a time difference .DELTA.t, which depends on the speed at which the printing substrate 06 is transported and the distance of the applicator rollers 07 from one another. The application roller 07 of one or both coating units 01 can be designed so that a spot coating can be carried out with it.

Exemplary embodiment 5: "two-sided, with application roller equal to counter-pressure roller"

This embodiment is also in Fig. 5 a) to see. This exemplary embodiment describes the preferred embodiment of the coating unit 01. The entire coating unit 01 comprises at least two chamber doctor blades 03, two anilox rollers 02 and two application rollers 07, which simultaneously serve as counterpressure rollers 08. The substrate 06 is in the painting on both sides simultaneously with one application roller 07 in contact and is therefore provided on both sides simultaneously with paint. In this case, the two applicator rollers 07 each form the counterpressure roller 08 of the other applicator roller 07 in order to achieve a better contact between application roller 07 and substrate 06 and thereby to improve the transfer of the paint from the applicator roller 07 to the substrate 06. The printing material 06 can wrap around one or both application rollers 07 or even between the two Mandatory rollers 07 are guided therethrough. In a preferred embodiment, each application roller 07 is preferably formed on its lateral surface of a relatively soft material to ensure that the paint is effectively transferred from the wells of, with the applicator roller 07 in contact, anilox roller 02 on the lateral surface of the applicator roller 07 becomes. Preferably, the lateral surface of the applicator roller 07 has a Shore A hardness between 30 and 70, more preferably, the lateral surface of the applicator roller 07 has a Shore A hardness of 60 on. The material of the lateral surface of the applicator roller 07 may be for example rubber or polyurethane. One or both application rollers 07 may also be formed as a spot-coating roller. For this purpose, the corresponding application roller 07 is designed in size such that its circumference is equal to the circumference of a transfer cylinder 12 in a printing unit 11 of the printing press. In addition, the applicator roller 07 is such that only certain, selectively selectable, parts of the lateral surface of the applicator roll 07 accept paint and thus can transfer. In this way, it is ensured that for each printed portion of the printing substrate 06, for example, per printed side of a printed product, always a same part of the section is painted or not painted. If the Spotlackierwalzen be designed as a flexographic printing rollers, it is necessary to arrange on each side of the substrate 06 an anilox roller 02, a standing in contact, designed as a flexographic printing roller 07 and a roller acting as a transfer roller and as a counter-pressure roller 08 roller 08 ( Fig. 5b) ).

Exemplary embodiment 6: "flexible coating unit for implementing various arrangements"

This embodiment is also in Fig. 6 and 9 to see. In addition to at least two chambered doctor blades 03 and at least two anilox rollers 02, at least two, but preferably four, further rollers 09 are arranged, which can be used as application rollers 07 and / or as counterpressure rollers 08. These are these rollers 09 mounted so that they are each displaceable perpendicular to a direction of its axis of rotation and there are devices 13 arranged to move these axes of rotation. The rollers 09 are preferably mounted such that their axes of rotation can be displaced along a virtual cylinder jacket surface when the rollers 09 are displaced, whose axis of symmetry coincides with an axis of rotation of the anilox roller 02 resting against the corresponding roller 09. In this case, the rollers 09 are always in contact with the corresponding anilox roller 02. Furthermore, preferred and optionally additionally arranged devices with which the corresponding roller 09 can be moved independently of this virtual cylinder surface perpendicular to its axis of rotation. Such devices may, for example, on the type of in the DE 101 52 021 C2 disclosed device.

In painting two rollers 09 can be moved so that they are each in contact with an anilox roller 02 and press together from both sides against the guided between them substrate 06. Other rollers 09 are irrelevant. In this way, the coating unit configuration as in the exemplary embodiment 5 (FIG. Fig. 6b) ).

It is also possible that the one side of the printing material 06 is painted by a roller 09, which is used as applicator roller 07, while the other side of the printing material 06 is painted by another roller 09, which is also used as a applicator roller 07 and both rollers 09 used as application roller 07 are in each case in contact with another anilox roller 02. The printing material 06 wraps around each of the applicator roller 07, so that the contact surfaces between substrate 06 and applicator roller 07 are not linear, but flat. The two rollers 09 used as application rollers 07 paint the printing substrate 06 at different locations and do not serve each other as a counterpressure roller 08. The result is a coating unit configuration as in exemplary embodiment 3 (FIG. Fig. 6c) ). In addition, still can one ( Fig. 6d) ) or both ( Fig. 6d) ) used as the application roller 07 rollers 09, one, from the other side of the substrate 06 pressed, not with an anilox roller 02 in contact, used as a counter-pressure roller 08 roller 09 assigned. In the event that a pair of platen rollers 07 is assigned a counter-pressure roller 08, a coating unit configuration is produced as in exemplary embodiment 4 (FIG. Fig. 6d) ). A roller 09 used in this case as a counterpressure roller 08 can be a roller 09 which can be used both as a pure counterpressure roller 08 and simultaneously as a counterpressure roller 08 and applicator roller 07. It is also possible with this printing unit 01, all rollers 02; 07; 08; 09 so that only one side of the substrate 06 is painted.

Each application roller 07 described in this exemplary embodiment preferably has a lateral surface with a Shore A hardness of between 30 and 70, more preferably, the lateral surface of the application roller 07 has a Shore A hardness of 60. The material of the lateral surface of the applicator roller 07 may be for example rubber or polyurethane. Each application roller 07 described in this embodiment can also be designed as a spot-coating roller. For this purpose, the corresponding application roller 07 is designed in size such that its circumference is equal to the circumference of a transfer cylinder 12 in an inking unit of the printing press. In addition, the applicator roller 07 is such that only certain, selectively selectable, parts of the lateral surface of the applicator roll 07 accept paint and thus can transfer. In this way, it is ensured that for each printed portion of the printing substrate 06, for example, per printed side of a printed product, always a same part of the section is painted or not painted.

Each roller 09 used exclusively in this exemplary embodiment as a counter-pressure roller 08 preferably has a material on its lateral surface which repels the substance applied to the printing substrate 06 before contact with this counterpressure roller 06, ie either paint or varnish, in order on its side Printing material 06 applied paint or the applied on their side of the substrate 06 paint during the painting process of the other side of the printing material 06 does not smear.

The following describes details of the coating unit 01, which are equally valid for all embodiments.

Preferably, the coating unit 01, for example, for maintenance, be shared. For this purpose, at least one part of the coating unit 01 is preferably displaced, while at least one other part of the coating unit 01 is held in its position or displaced in another direction. More preferably, a division takes place so that such components of the coating 01, such as a chambered doctor blade 03, an anilox roller 02 and any applicator rollers 07 and / or counter-pressure rollers 08 and / or rollers 09 generally touching the painting one side of the printing substrate 06 are arranged or are in contact with such components, are not displaced, while such components of the coating 01, such as a chambered doctor blade 03, an anilox roller 02 and any applicator rollers 07 and / or counter-pressure rollers 08 and / or generally rollers 09, in the painting another side of the printing material 06 are arranged touching or are associated with such components, are moved so that they move away from the unshaded components of the coating 01. The coating unit 01 can thus be divided, regardless of whether a substrate 06 is currently in the coating unit 01 or not. Even more preferably, a part of a housing of the coating 01, which is not moved, rigidly connected to a part of a housing of the printing unit 11, which is also not displaced, while another part of the housing of the coating 01, which is moved with a other part of the housing of the printing unit 11 is rigidly connected, which can be moved, for example, for maintenance ( Fig. 7 ).

If the coating unit 01 is not designed to be divisible, its housing is preferably rigidly connected to at least part of the housing of the printing unit 11 (FIG. Fig. 8 ). Under a rigid connection is a connection between two parts to understand, although in principle, for example by loosening screws or the like, can be separated, but can not be moved relative to each other in the normal case, and especially in the case of a running operation.

Regardless of whether the coating unit 01 is formed divisible, preferably each with an at least partially painted side of the substrate 06 in contact standing anilox rollers 02 and / or applicator rollers 07 and / or counter-pressure rollers 08 of the coating 01 are placed on the substrate 06. In the event that an applicator roller 07 and / or a counter-pressure roller 08 is employed on the printing material 06, this can be offset, for example, by a linear and / or curved, for example circular segment-shaped movement, for example about an axis of rotation of an adjacent roller 09 from the printing substrate 06 , Also combinations of such movements are possible. In the event that an anilox roller 02 is employed directly on the printing material 06, the same applies to their Abstellbewegung, but in addition must be moved together with the anilox 02, the adjacent chambered doctor blade 03, and preferably so that no paint uncontrolled from the chambered doctor blade 03 exit. The same applies to inflow and outflow lines. The Abstellbewegung takes place in each case preferably in directions exclusively perpendicular to a respective axis of rotation of the printing substrate 06 in contact with the roller 02; 07; 08; 09th

If desired, only one partial web can be painted with the coating unit 01, ie, only one part of the printing material 06, for example half, one third or one fourth, is painted on the direction parallel to the axis of rotation of the anilox roller 02. There are different possibilities for this. If an applicator roller 07 is arranged in the coating unit 01, this can be such that they only on the part of their Extension in the direction parallel to the axis of rotation of the anilox roller 02 record and can transfer paint, which comes into contact with the part of the printing material 06, to be applied to the paint. Regardless of whether an applicator roller 07 is arranged in the coating unit 01, a chambered doctor blade 03 is preferably arranged, which in its extent with respect to the direction parallel to a rotational axis of an adjacent anilox roller 02 is the same size as the area of the printing material 06 to be painted , That is, possibly smaller than an extension of the printing material 06 in the direction perpendicular to the transport direction of the printing material 06, and which is arranged so that in the paint operation paint is ultimately transmitted exclusively to the desired locations of the printing material 06. A change in the extent of the applicator roller 07 in the direction of its axis of rotation is conceivable for this purpose.

If an entire printing material strand, that is to say a plurality of superimposed layers of printing stock 06, is transported through the coating unit 01 located in the painting operation, then this printing material strand can also be painted, ie. H. Depending on the coating unit constellation, either one or both outer layers of the printing material 06, in each case on their side facing away from the remaining printing material strand, are coated with a lacquer layer. Participating gaps between application rollers 07 and anilox rollers 02 or counterpressure rollers 08 should be adapted accordingly in their extent.

If two coating units 01 are used for coating both sides of the printing substrate 06, paint is not applied to the printing substrate 06 at exactly the same point in time on one side of the printing substrate 06, as on an exactly opposite point on the other side of the printing material 06, Thus, the speed at which the printing material 06 is transported, and the distance between the two points at which paint is applied, are coordinated so that the resulting time difference .DELTA.t between the application of paint to the two is less than 0.5 seconds. In other words, this means that a product from a transport speed of the printing material 06 and a time of 0.5 seconds must be greater than the distance between the two points, where each one side of the printing substrate 06 with a corresponding roller-coating roller 02; 07; 09 of the coating 01 is in contact.

Each Spotlackierwalze may be formed as a flexographic printing roll, in which the selection of the painting areas is determined by a different radius at the appropriate location. It should be noted that two spot-coating rollers should preferably not be mutually attached as counter-pressure rollers 08, since occurring different radii on at least one flexographic printing roller can not ensure a constant backpressure over a peripheral surface of the flexographic printing roller. Instead, the property of whether varnish is transferred or not can be influenced, for example, by the choice of the surface material, for example in the manner in which offset printing is also used.

The coating unit 01 forms in all the described embodiments, together with the printing substrate 06, a system consisting of the respective coating unit 01 and the substrate 06 arranged therein.

A number of rollers 09 between chambered doctor blade 03 and substrate 06 can also be increased if a desired amount of paint transferred should be correspondingly smaller.

A continuous lacquer surface is preferably achieved in that a lacquer on the printing substrate 06 transmitting lateral surface of a corresponding roller 07; 08; 09 is at least 80% and preferably at least 90% covered with varnish. Paint transferring lateral surfaces of rollers 07; 08; 09, which are not an anilox rollers 02, are preferably formed by elevators, the lateral surfaces of these rollers 07; 08; 09 forming arranged. Such an elevator can be designed, for example, as a printing blanket, that is to say as coated, dimensionally stable support plates which can have a plurality of layers, for example a layer of a metal forming a base body and a layer of an elastomer of corresponding hardness. Such an elevator is on the corresponding cylinder 07; 08; 09 aufziehbar or raised and in corresponding channels of the rollers 07; 08; 09 attachable or attached.

Preferably, at least one roller (07, 08, 09) of the coating unit (01) can be arranged or arranged with a lift, which has a same sequence of layers, such as at least one printing unit working in at least one, the same printing material (06) arranged elevator. As a result, used components are standardized, resulting in less administrative and labor.

LIST OF REFERENCE NUMBERS

01

Painting works

02

Roller, anilox roller

03

chambered doctor blade

04

-

05

-

06

Substrate, substrate web

07

Roller, applicator roll (01)

08

Roller, counterpressure roller (01)

09

roller

10

-

11

Printing unit, double offset printing unit

12

Roller, cylinder, transfer cylinder, impression cylinder (11)

13

contraption

14

Form cylinder (11)

Claims (14)

1. A roller rotary offset printing press with at least one coating unit (01) and at least one printing unit (11), wherein the coating unit (01) comprises at least one chamber blade (03) and at least one anilox roller (02), wherein at least one anilox roller (02) has a plurality of recesses in its lateral surface, together forming a conveyed volume and wherein the coating unit (01) is arranged along a transport path of a printed stock (06) processed by the roller rotary offset printing press and the coating unit (01) downstream of the at least one printing unit (11) of the roller rotary offset printing press, characterized in that at least one rotational axis of an anilox roller (09) of the coating unit (01) is arranged further above than all rotational axes of printing cylinders (14) and other cylinders (12) and rollers (12) which are arranged in a printing unit upstream of the coating unit (01) with respect to a transport direction of the printed stock (06) and that the at least one printing unit (11) is detachably arranged and a part of a housing of the at least one printing unit (11) is displaceably arranged and a part of the housing of the at least one printing unit (11) is not displaceably arranged and that the at least one coating unit (01) is not detachable and that a housing of the at least one coating unit (01) is rigidly connected to one of the parts of the housing of the at least one printing unit (11).
2. The roller rotary offset printing press according to claim 1, characterized in that at least one pair of two rollers each (02; 07; 08; 09) is arranged, which together form a coating gap and that these two rollers each (02; 07; 08; 09) each forming a pair are arranged such that a plane, which contains a rotational axis of one of these two rollers (02; 07; 08; 09) and which contains a point of a rotational axis of the other two rollers (02; 07; 08; 09) arranged within a volume defined by the other of these two rollers (02; 07; 08; 09), which with one horizontal plane includes an angle of less than 45°.
3. The roller rotary offset printing press according to claim 1, characterized in that at least one pair of two rollers each (02; 07; 08; 09) is arranged, which together form a coating gap and that in each case at least one roller (07; 08; 09) of at least one such pair is in contact with the at least one anilox roller (02).
4. The roller rotary offset printing press according to claim 1, characterized in that along the transport path of the printed stock (06), downstream from the coating unit (01), apart from guide rollers or other devices changing a transport direction of the printed stock (06), as next device a folding apparatus and/or a cutting device is arranged to act on the printed stock (06).
5. The roller rotary offset printing press according to claim 1, characterized in that along the transport path of the printed stock (06) between a roller (12) of the printing unit (11) and a roller (02; 07; 09) of the coating unit (01) transferring coating at the most devices are arranged as components of the printing press coming into contact with the printed stock (06), which change a transport direction of the printed stock (06).
6. The roller rotary offset printing press according to claim 1, characterized in that the printed stock (06) to be coated is in contact with an application roller (07) in contact with the anilox roller (02) and the printed stock (06) is arranged coming into contact with the surfaces of the application roller (07).
7. The roller rotary offset printing press according to claim 1, characterized in that the printed stock (06) to be coated is in contact with an application roller (07) in contact with the anilox roller (02) and a counter-pressure roller (08) pressing the printed stock (06) on the application roller (07) is arranged.
8. The roller rotary offset printing press according to one of claims 6 or 7, characterized in that a lateral surface of at least one application roller (07) consists of a material with a shore-A-hardness of 30 to 70.
9. The roller rotary offset printing press according to claim 7, characterized in that the lateral surface of the counter-pressure roller (08) consists of a material with a shore-A-hardness of more than 70.
10. The roller rotary offset printing press according to claim 1, characterized in that at least one roller (07; 09), in a coating operation transferring coating to the printed stock (06), is configured as a spot coating roller transferring coating only to specified places of the printed volume (06).
11. The roller rotary offset printing press according to claim 1, characterized in that all contacts occurring between involved rollers (02; 07; 08; 09; 12) and/or transfer cylinders (12) and/or the printed stock (06) are rolling contacts.
12. The roller rotary offset printing press according to claim 1, characterized in that no dryer is arranged along the entire transport path of the printed stock (06).
13. The roller rotary offset printing press according to claim 1, characterized in that all respective anilox rollers (02) and/or application rollers (07) and/or counter-pressure rollers (08) of the coating unit (01) in contact with an at least partially coated side of the printed stock (06) are detachably arranged from the printed stock (06).
14. A method for using a roller rotary offset printing press according to claim 1, characterized in that the conveyed volume is filled with a coating quantity at least on a portion of the lateral surface of the anilox roller (02) the mass of which based on this part of the lateral surface of the anilox roller (02), minus a water portion, equals on average a maximum of 4 g/m².

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