DE102019104591A1 - Printing unit and printing machine with a printing unit and set-up method - Google Patents

Abstract

The invention relates to a printing unit for printing substrate by a rotogravure printing process, with a forme cylinder which comprises an imaging pattern of depressions on its circumference, and with an inking unit for coloring the pattern of depressions provided on the forme cylinder, comprising a first inking unit cylinder which is in the area its outer surface has recesses corresponding to recesses on the forme cylinder. The first inking unit cylinder comprises a rotatably mounted or storable cylinder body in the inking unit, on which a circumferentially closed, on its outwardly directed surface carrying the depressions of the first inking unit cylinder, is detachably arranged or can be arranged inking transfer form sleeve. In addition, the invention relates to a printing press, a corresponding printing unit, and a method for equipping an inking unit cylinder comprised by a printing unit.

Description

The invention relates to a printing unit and a printing press with a printing unit and a method for setting up according to claim 1 or 15 or 16.

The EP 2 909 033 B1 discloses an intaglio printing machine with a printing unit, in which a plate cylinder designed as an intaglio cylinder is indirectly inked via an ink collecting cylinder. This receives the printing ink via several stencil rollers, which in turn are colored by inking devices. In one embodiment, the inking is carried out by two inking rollers each, which receive the ink via a doctor roller which interacts with an ink fountain. In another embodiment, an ink transfer roller is additionally provided between the doctor roller and the stencil roller.

In the US 4,604,951 A is an Intaglio printing machine with disclosed with a plate cylinder carrying a printing plate, with an applicator roller in rolling contact with the plate cylinder, which has a structure of ink-transfer elevations on the circumference, and with an inking device, which comprises a duct roller and is in rolling contact with the applicator roller. The duct roller has essentially the same circumference as the applicator roller and has on its outer circumference corresponding depressions of different depths to the depressions on the printing plate. When printing, a distance of 0.03 to 0.05 mm is set between the roller and the ink knife.

Through the WO 2005/077656 A1 a inking system of an intaglio printing machine is known, in one embodiment the gravure printing plate is inked directly by a stencil roller, which in turn is inked by a selective ink cylinder. The latter is sprayed with printing ink on its circumferential surface, the excess ink being removed by means of a wiping roller before contact with the stencil roller. In the remaining versions, the intaglio printing plate is inked indirectly via a transfer or collecting cylinder, which is inked via one or more stencil rollers, which in turn is or are inked by a selective ink cylinder. The latter is supplied with printing ink on its circumferential surface by a spray device or a doctor roller which interacts with an ink fountain, the excess ink being removed again by means of a wiping roller before contact with the stencil roller.

The CN 101544098 B relates to a duct roller, an ink transfer device and an ink transfer system of a gravure printing machine. The ink is transferred from an ink supply via an inductor roller, which has an engraving corresponding to the engraving on the gravure cylinder, to an elastic ink roller and from there to the gravure cylinder. When the paint is applied to the duct roller, its outer surface is in contact with a hook-shaped scraper to wipe off the paint at the non-engraved areas. As a result, no uniform ink layer is applied to the elastic ink roller, but rather a color sample with different thicknesses, corresponding to the pattern of the engraving on the gravure cylinder, similar to the shape of a relief. The pressure of the contact on the lateral surface can be adjustable via an adjusting device.

The DE 103 04 117 A1 relates to a clamping cylinder and a method for clamping embossing dies for embossing rollers. In contrast to applications in the field of printing technology, the clamping cylinders used there were not suitable for embossing dies with a wall thickness of just a few tenths of a millimeter. The embossing dies, which are designed as sleeves, can be clamped on the basis of a cooling from the inside, for example with liquid nitrogen, or on the principle of elastic expansion using compressed air.

The invention has for its object to provide a printing unit and a printing press with a printing unit and a method for setting up.

The object is achieved by the features of claim 1 or 15 or 16.

The advantages that can be achieved with the invention consist in particular in that the consumption of printing ink can be reduced to a particularly low value.

In particular using a corresponding inking cylinder comprising elevations, in particular interlocking and / or disjointed, partial image structures with different colors can be produced.

A particularly suitable printing unit for printing substrate using a gravure printing process comprises a forme cylinder which has an imaging pattern of depressions on its circumference, and an inking unit for coloring the pattern of depressions provided on the forme cylinder, which has a first inking unit cylinder which is in the region of its lateral surface to indentations on the forme cylinder

In a particularly advantageous embodiment, the first inking cylinder comprises a rotatable one in the inking unit mounted or storable cylinder body, on which a circumferentially closed, on its outward-facing surface carrying the depressions of the first inking unit cylinder, is releasably arranged or can be arranged.

In an advantageous embodiment, the ink transfer form sleeve comprises a layer which has the depressions on its outward-facing surface and a carrier layer which carries this layer in the middle or directly.

In an advantageous embodiment, the layer having the depressions is formed by a ceramic layer, in particular a layer of oxide ceramic, preferably of chromium oxide.

In an advantageous embodiment, the ink transfer form sleeve comprises a metallic intermediate layer between the layer having the depressions and the carrier layer, which is preferably formed by aluminum.

In an advantageous embodiment of an intermediate layer, it has a layer thickness of 0.10 to 0.35 mm.

The color engraved cylinder or the cylinder body can advantageously be temperature-controlled, in particular designed to be flowed through by temperature-control fluid.

In an advantageous embodiment, the color engraving cylinder or the cylinder body can be removed from the inking unit for maintenance and / or armament purposes.

The layer having the depressions is preferably formed by a layer of oxide ceramic, in particular of chromium oxide.

The layer having the depressions preferably has a thickness of at most 350 μm, in particular at most 200 μm.

If a collecting cylinder working together with a plurality of inking units is arranged, a plurality of colors can be printed simultaneously, in particular with interlacing and / or unrelated partial image structures.

In a particularly advantageous embodiment for the printing unit, the inking device on at least the downstream side of the application unit in the direction of rotation of the inking unit cylinder comprising the recesses - in particular between this application unit and a nip point to the downstream inking unit cylinder - a z. B. designed as a doctor blade or ink knife, through which viewed in the direction of rotation behind the ink application and before the first nip point with the second inking cylinder previously applied to the outer surface of the first inking cylinder ink can be removed.

In a particularly preferred embodiment, a third inking unit cylinder, in particular an ink collecting cylinder, is provided between the second inking unit cylinder, which has the elevations or raised areas, and the forme cylinder, which preferably has an elastic and / or compressible outer surface.

In an advantageous embodiment, a squeegee designed and / or effective and - in particular operationally, d. H. at least in the working or operating position or during production - provided in contact with the outer surface of the inking cylinder comprising the depressions, by means of which printing ink lying on non-engraved areas can be removed.

In another advantageous embodiment, the retaining means is spaced apart from the lateral surface in its working position, e.g. B. at least 2 microns, especially at least 5 microns, and / or z. B. at most 100 microns, in particular at most 50 microns, spaced and / or spaced from the lateral surface, adjustable color knife formed by which on non-engraved areas printing ink to a small layer thickness, for. B. at least 2 microns and / or z. B. at most 100 microns, in particular at most 50 microns, lying layer thickness is removable.

The “application point” is also to be understood as a circumferential section that calculates in the circumferential direction and on which ink is applied to the first inking unit cylinder by the inking device.

In a particularly advantageous embodiment, the inking device comprises an ink reservoir, which is at least partially delimited on the side facing the inking cylinder comprising the depressions by its outer surface, and a second inking cylinder which has elevations corresponding to depressions on the forme cylinder or raised areas in the region of its outer surface which correspond to depressions comprising areas of the imaging pattern of depressions on the forme cylinder.

In one embodiment, the inking device is arranged on the side of the inking cylinder which has the depressions and which has the elevations or raised areas Inking cylinder is facing. In another embodiment, however, it is provided on the side facing away and / or on the circumference of the first inking cylinder in the area of the upper half and / or on the side rotating upward during operation.

In an advantageous embodiment, the printing unit comprises a plurality of ink trains, each with an inking device, a first inking unit cylinder with depressions and a second inking unit cylinder with elevations or raised areas, by means of which the forme cylinder can be inked directly or indirectly. The first inking cylinder of two ink trains have z. B. different patterns of wells.

In an advantageous embodiment, the inking device advantageously comprises a removal device for printing ink collecting behind a retaining means and / or at least the retaining means is designed to be axially changeable and / or at least the retaining means can be adjusted while maintaining the inclination in the radial direction and / or is a color distribution device with axial an oscillating color distributor is provided with a distributor head and / or a color outlet and / or monitoring and / or regulation of the fill level is provided and / or the printing ink in the line path to the outlet at the inking device can be tempered by a temperature control device.

Special advantages of an o. G. Printing unit unfold in a printing machine designed as a security printing machine and / or as a sheet-shaped printing machine and / or as a gravure printing machine working according to the intaglio method, which feeds a substrate through which the substrate to be printed can be fed to the printing machine on the input side, a first conveyor line, through which the substrate can be fed to the at least one printing unit, comprises a second conveyor line, through which the substrate can be fed directly or indirectly to a product receptacle, through which the at least single-printed substrate can be combined into packs.

In a particularly advantageous method for setting up an inking unit cylinder encompassed by a printing unit, which comprises a pattern of depressions in the area of its lateral surface, which corresponds to depressions in a printing form arranged or to be arranged on a forme cylinder of the printing unit, is used for setting up or renewing those having the depressions The lateral surface of an ink transfer form sleeve, which is closed on the circumference and has the recesses on its outward surface, is arranged on a cylinder body which is encompassed by the inking unit cylinder and rotatably mounted or storable in the printing unit.

The above-mentioned advantageous designs, embodiments and variants can be combined in any way on their own, but also - provided that no contradicting or conflicting objects are involved.

Further design variants and further developments can be found individually or in combinations of the following description and the subclaims.

Exemplary embodiments of the invention are shown in the drawings and are described in more detail below.

• 1a eine Seitenansicht einer Druckmaschine, insbesondere Tiefdruckmaschine in einer ersten Ausführung;
• 1b eine Seitenansicht einer Druckmaschine, insbesondere Tiefdruckmaschine in einer zweiten Ausführung;
• 2a einen vergrößerte Darstellung des Druckwerkes aus 1a;
• 2b einen vergrößerte Darstellung des Druckwerkes aus 1b;
• 3a einen vergrößerten Ausschnitt aus dem Druckwerk gemäß 2a;
• 3b einen vergrößerten Ausschnitt aus dem Druckwerk gemäß 2b;
• 4 eine schematische Darstellung a) eines Musters von Vertiefungen auf dem Formzylinder, b) eines Musters von korrespondierenden Erhebungen auf dem die Erhebungen aufweisenden Farbwerkszylinder und c) eines Musters von korrespondierenden Vertiefungen auf dem die Vertiefungen aufweisenden Farbwerkszylinder;
• 5 eine Seitenansicht einer ersten Ausführung für den die Vertiefungen umfassenden Farbwerkszylinder mit Einfärbeeinrichtung;
• 6 eine Schrägansicht der Einfärbeeinrichtung aus 5;
• 7 eine Draufsicht auf eine Einfärbeeinrichtung gemäß 5;
• 8 eine Detailansicht aus der Einfärbeeinrichtung gemäß 5;
• 9 eine Detailansicht einer Lagerung der das Rückhaltemittel tragenden Traverse mit Axialantrieb;
• 10 ein Detailschnitt des Axialantriebes aus 9 aus anderer Richtung;
• 11 eine Einzelansicht der Farbverteileinrichtung;
• 12 eine Detailansicht der Farbverteileinrichtung aus 11 von schräg unten;
• 13 eine Detailansicht zur Linearführung aus der Einfärbeeinrichtung gemäß 5;
• 14 eine Gesamtansicht der im Gestell angeordneten Einfärbeeinrichtung;
• 15 eine Ausführung der Einfärbeeinrichtung mit alternativen Ausgestaltung des Farbvorlageraumes;
• 16 eine Seitenansicht der Einfärbeeinrichtung mit Stellantrieb;
• 17 eine Seitenansicht im Schmitt der Einfärbeeinrichtung gemäß 16;
• 18 eine Perspektivansicht eines die Gravuren direkt auf seiner Mantelfläche tragenden Farbgravurzylinders;
• 19 ein Längsschnitt durch einen Farbgravurzylinder aus 18, exemplarisch in Ausführung mit von Temperierfluid durchstömbaren Strömungskanälen;
• 20 ein Teilschnitt durch einen als Vollzylinder oder - strichliert angedeutet - als Hohlzylinder ausgebildeten Farbgravurzylinder mit Mehrschichtaufbau;
• 21 eine als Farbübertragungsformhülse bzw. Sleeve ausgebildete Farbübertragungsform;
• 22 ein Teilschnitt durch einen als Vollzylinder oder - strichliert angedeutet - als Hohlzylinder ausgebildeten Farbgravurzylinder mit Sleeve;
• 23 ein teilschnitt durch eine mehrschichtig aufgebaute Sleevewand;
• 24 eine Schrägansicht eines Ausführungsbeispiels für einen mit Sleeve zu bestückenden Zylinderkörper;
• 25 ein Längsschnitt durch einen Zylinderkörper gemäß 24 in einer ersten Ausführung als Hohlzylinder, exemplarisch in Ausführung mit der Unterstützung eines Sleevewechsels dienenden Auslassöffnungen und mit von Temperierfluid durchstömbaren Strömungskanälen;
• 26 ein Längsschnitt durch einen Zylinderkörper gemäß 24 in einer zweiten Ausführung als Vollzylinder, exemplarisch in Ausführung mit der Unterstützung eines Sleevewechsels dienenden Auslassöffnungen;
• 27 eine Querschnitt durch den Hohlzylinder aus 26, exemplarisch in Ausführung mit der Unterstützung eines Sleevewechsels dienenden Auslassöffnungen und mit von Temperierfluid durchstömbaren Strömungskanälen;
• 28 eine zweite Ausführung eines als Hohlzylinder ausgebildeten Zylinderkörper mit zwei gegenläufig konisch verlaufenden Bauteilflächen zur Unterstützung eines Sleevewechsels.

Show it:

• 1a a side view of a printing press, in particular gravure printing press in a first embodiment;
• 1b a side view of a printing press, in particular gravure printing press in a second embodiment;
• 2a an enlarged view of the printing unit 1a ;
• 2 B an enlarged view of the printing unit 1b ;
• 3a an enlarged section of the printing unit according to 2a ;
• 3b an enlarged section of the printing unit according to 2 B ;
• 4th a schematic representation of a) a pattern of depressions on the forme cylinder, b) a pattern of corresponding elevations on the inking cylinder having the elevations and c) a pattern of corresponding depressions on the inking cylinder having the depressions;
• 5 a side view of a first embodiment for the inking cylinder comprising the recesses with inking device;
• 6 an oblique view of the inking device 5 ;
• 7 a plan view of a coloring device according to 5 ;
• 8th a detailed view of the coloring device according to 5 ;
• 9 a detailed view of a bearing of the cross member carrying the retaining means with axial drive;
• 10th a detailed section of the axial drive 9 from another direction;
• 11 a single view of the color distribution device;
• 12th a detailed view of the color distribution device 11 from diagonally below;
• 13 a detailed view of the linear guide from the coloring device according to 5 ;
• 14 an overall view of the inking device arranged in the frame;
• 15 an embodiment of the inking device with an alternative design of the ink reservoir;
• 16 a side view of the inking device with actuator;
• 17th a side view in Schmitt the inking device according to 16 ;
• 18th a perspective view of a color engraving cylinder carrying the engravings directly on its outer surface;
• 19th a longitudinal section through a color engraving cylinder 18th , exemplarily in execution with flow channels through which temperature control fluid can flow;
• 20 a partial section through a colored engraved cylinder with a multilayer structure, designed as a solid cylinder or - indicated by dashed lines - as a hollow cylinder;
• 21 an ink transfer form designed as an ink transfer form sleeve;
• 22 a partial section through a colored engraved cylinder with a sleeve designed as a solid cylinder or - indicated by dashed lines - as a hollow cylinder;
• 23 a partial section through a multi-layer sleeve wall;
• 24th an oblique view of an embodiment of a sleeve to be equipped with a cylinder body;
• 25th a longitudinal section through a cylinder body according to 24th in a first embodiment as a hollow cylinder, exemplarily in execution with the support of a sleeve change serving outlet openings and with flow channels through which temperature fluid can flow;
• 26 a longitudinal section through a cylinder body according to 24th in a second version as a full cylinder, exemplarily in execution with the support of a sleeve change serving outlet openings;
• 27 a cross section through the hollow cylinder 26 , exemplarily in execution with the support of a sleeve change serving outlet openings and with flow channels through which tempering fluid can flow;
• 28 a second embodiment of a cylinder body designed as a hollow cylinder with two oppositely conical component surfaces to support a sleeve change.

A printing press, in particular a security printing press, comprises at least one printing unit 500 through which substrate S is printable at least according to a gravure printing process, for example a substrate feed 100 , through which the printing machine on the input side the substrate to be printed S can be fed, a first conveyor line 200 through which the substrate S the at least one printing unit 500 is feedable, a product shot 400 , through which the at least single printed substrate S ' can be combined into containers, as well as a second conveyor line 300 through which the substrate S ' - If necessary, via further processing units - the product intake 400 is feedable.

The printing machine is e.g. B. designed as a sheet-fed printing press, in particular as a sheet-fed printing press, preferably as a sheet-fed printing press printing in an intaglio printing process. The intaglio printing process is a gravure printing process which is preferably used for the industrial production of banknotes, security documents or security elements.

The printing press that preferably prints using a gravure printing process, in particular in an intaglio printing process, in a preferred embodiment comprises a sheet-fed printing press in addition to the at least one printing unit that works using a gravure printing process, in particular an intaglio printing process 500 preferably at least one as a sheet feeder 100 executed substrate feed 100 , by means of which a substrate to be printed S in the form of, in particular, stacked substrate sheets S , e.g. B. substrate sheet S , in particular securities sheets S , is provided on the input side of the printing press or at least can be provided. The rectangular substrate sheets S have z. B. an edge dimension in the range between 475 x 450 mm and 700 x 820 mm; the grammage of the substrate sheets S lies z. B. in the range between 70 g / m ² and 120 g / m ² . It also includes one from the first conveyor line 200 included arch system 201 , by means of which on the sheet feeder 100 provided substrate sheets S e.g. B. via linear funding 202 and / or one or more transfer drums 203 the or a first printing unit 200 the press in a sequence, d. h are fed individually one after the other or at least can be fed. Downstream of the or a last printing unit 500 the printing machine further z. B. one of the second conveyor line 300 included, for example as a rotating conveyor belt or as a rotating chain system, in particular chain gripper system designed transport device 301 to which the at least through the printing unit 500 printed substrate sheet S ' directly or via at least one or more, e.g. B. from the second conveyor line 300 included intermediate cylinders are handed over to the transport facility 301 passed substrate sheets S ' by means of this to a subsequent processing unit or to a delivery 400 , here stack delivery 400 , e.g. B. Multi-stack delivery, trained product intake 400 , are transported or are at least transportable and are stored there or at least can be stored. In execution from 1a and 1b shows the stack delivery 400 in the transport direction T the substrate sheet S ; S ' considered z. B. four stacks or stacking rooms arranged one behind the other 401 on. In the area of the transport facility 301 can an unmarked, z. B. optoelectronic, preferably camera-based inspection system, by means of which a quality of the printed substrate sheet S ' is checked or at least can be checked. The substrate arch S ' are checked in particular to ensure that they are free of errors in comparison with a given template. Depending on this test result, the substrate sheets S ' then placed on a specific stack of the multi-stack delivery.

In principle, at least one printing unit working according to an intaglio printing process 500 in the first and / or second conveyor line 200 ; 300 one or more further printing units operating according to the same or different printing processes can be provided.

The printing unit working according to a gravure printing process, in particular an intaglio printing process 500 , hereinafter also as a gravure printing unit 500 referred to, includes at least one also as an impression cylinder 501 effective and / or designated printing unit cylinder 501 and one with the impression cylinder 501 a pressure point 502 training, as a forme cylinder 503 for rotogravure printing cylinders 503 , especially Intaglio printing cylinders 503 , the impression cylinder 501 and the forme cylinder 503 preferably under high pressure against each other or at least employable. In the form of an arched substrate S ; S ' processing printing machine includes the impression cylinder 501 preferably one or more holding means, e.g. B. gripper bars through which the arcuate substrate S on the impression cylinder 501 overlying by the pressure point 502 is eligible for funding. The forme cylinder 503 carries one or more printing forms on its circumference 504 with the image to be printed, e.g. B. Subject, underlying pattern of depressions 514 , hereinafter referred to as "engravings" 514, where not explicitly specified, regardless of their manufacture. Unless explicitly differentiated, it should be used as a printing form 504 , especially gravure form 504 both a the wells 514 or engravings 514 comprehensive cylinder outer circumferential surface itself or a preferred embodiment than on the forme cylinder 503 releasably arranged or arrangeable, the wells 514 or engravings 514 comprehensive printing form 504 , e.g. B. as a pressure plate 504 or possibly be understood as a printing form sleeve. The forme cylinder is preferably 503 "Multiple size", e.g. B. triple the size, and is to accommodate several, for. B. three, printing form 504 one after the other and / or for printing several z. B. three, print lengths, in particular several z. B. three, substrate sheet S executed per revolution.

The printing unit is preferred 500 or the printing press for printing on the substrate S , especially the substrate sheet S , designed with multiple uses. That corresponding to a printing or repeating length and / or a substrate sheet S The overall image motif assigned is preferably due to the image motifs on the substrate of a multiplicity of juxtaposed in several columns and one behind the other in several rows S benefits to be printed, e.g. B. banknotes formed. Accordingly, the engraving pattern is a printing form assigned to the printing length 504 through a corresponding number of columns and rows arranged in a matrix-like manner - in particular with the same motif - patterns of depressions, e.g. B. Engraved motifs.

There is a removal device for removing excess paint 506 , e.g. B. a wiper 506 with a wiping cylinder 507 , is against the forme cylinder 503 employed or at least employable. The wiping cylinder 507 is on its outer surface z. B. coated with a plastic.

The forme cylinder 503 or a printing form provided on this 504 is through an inking unit 508 one or preferably multi-colored. This inking unit 508 can be arranged in total or in sections of the preferably spatially fixed, which is the pressure point 502 forming printing unit cylinder 501 ; 503 comprehensive printing part 509 be mounted so as to be movable and / or even divisible.

The inking unit 508 includes - with regard to the ink transport direction in the inking unit 508 viewed at the upstream end - one, for example, by an ink supply system with printing ink 517 supplied or supplyable - coloring device 511 , through which a - z. B. first - inking cylinder 512 can be colored. This inking cylinder 512 includes in the area of its lateral surface 518 Indentations 513 , in the following where not explicitly specified, irrespective of their manufacture synonymous as "engravings" 513 denotes which to the or part of the engravings 514 on the printing form 504 of the forme cylinder 503 correspond. This does not mean that they have the same dimensions and the same depth as the corresponding engravings 514 must have, but that their shape and / or depth are in a defined relationship to one another, which is or is obtained, for example, on the basis of established or to be established legalities. Is preferred for engravings 513 on the inking cylinder 512 a larger width b513 , e.g. B. as a line width b513 , and / or a greater depth is provided than for the corresponding engravings 514 on the forme cylinder 503 or the printing form enclosed or carried by this 504 . For example, narrow line structures on the printing form 504 on the engravings 513 comprehensive inking cylinder 512 partially even merge into larger engraved areas. For the sake of simplicity, the engravings 513 comprehensive inking cylinder 512 , where not explicitly specified, regardless of the production of the specializations 513 synonymous as a color engraving cylinder 512 designated.

insbesondere n = 1, 2 oder 3.The outside diameter of the color engraving cylinder 512 is preferably related 1 : n to the outside diameter of the forme cylinder 503 , With $\text{n}\in \mathbb{N}<\mathrm{10,}$

especially n = 1, 2 or 3.

Through the coloring device 511 is the first inking cylinder 512 that in the area of its lateral surface 518 to deepening 514 on the forme cylinder 503 corresponding recesses 513 includes, can be colored at an order point lying on its circumference. In this context, the “application point” is also to be understood as a circumferential section that calculates in the circumferential direction and on which ink is applied to the first inking cylinder 512 through the inking device and / or contact with the available ink 517 takes place. The order at the order point can in principle be of any design.

In a preferred embodiment, it comprises the color engraving cylinder 512 inking device 511 a paint room 516 which on the the color engraving cylinder 512 facing side at least in part through its lateral surface 518 is limited (see e.g. 3a and 3b such as 15 ). For example, opening or protruding into the color space 516 - e.g. B. in its axial position in the middle - the opening of at least one - stationary or axially moving - ink supply line through which the proportion of used printing ink 517 in the color presentation room 516 is or can be replaced. Under the paint room 516 should here z. B. generally be understood that space in which is to be applied, with the lateral surface 518 ink in contact 517 located. Depending on the version, this can be a color space that is open at the top, open at the bottom, or closed at the top and bottom 516 be.

With the engravings 513 or wells 513 of the inking cylinder 512 for example, there are depressions with a depth of, for example, up to a maximum of 0.3 mm, in particular a maximum of 0.2 mm compared to the non-engraved lateral surface area.

Downstream of the color engraving cylinder 512 is in the inking unit 508 one to be colored by this - e.g. B. second - inking cylinder 519 provided that in the area of its - preferably elastic and / or compressible - outer surface 521 at least raised areas 522 shows which engraved areas 523 the printing form to be inked 504 correspond. In a particularly advantageous embodiment, however, are on the lateral surface 521 to - especially individual - engravings 514 (i.e. individual engraved lines) of the printing form 504 corresponding surveys 524 , e.g. B. provided in the manner of a relief. The latter does not mean that the surveys 524 the same dimensions in the surface as the corresponding engravings 514 must have, but that their shape in a defined relation to the shape of the corresponding engraving 514 the printing form 504 stands, which is also obtained here, for example, on the basis of established or to be determined regularities. For the sake of simplicity, the raised areas 522 and / or surveys 524 comprehensive inking cylinder 519 , where not explicitly specified, regardless of the type and execution of the surveys 524 synonymous as a color relief cylinder 519 designated. Preference is given to engravings 514 corresponding surveys 524 on the color relief cylinder 519 a larger width b524 intended as for the corresponding engravings 514 on the forme cylinder 503 or the printing form 504 (e.g. as width b514 or knitting strength b514 ). For example, individual surveys 524 in narrow line structures on the forme cylinder 503 or on the printing form 504 on the color relief cylinder 519 partially to larger surveys 524 ' merge. The individual engravings are also in the event of mergers occurring 514 on the forme cylinder 503 Basis for the pattern of corresponding surveys 524 ; 524 ' and in this sense are also considered to be individual wells 514 on the forme cylinder 503 to be understood accordingly. In addition, preference is also given to at least a number of surveys which are actually individually resolved 524 on the outer surface 521 of the color relief cylinder 519 includes. Especially in the case of the above-mentioned raised areas 522 With compared to individual surveys 524 This second inking cylinder becomes larger 519 also as a template cylinder 519 designated.

In the surveys 524 ; 524 ' for example, surveys 524 ; 524 ' with a height of, for example, between 0.03 and 2.0 mm, in particular between 0.5 and 1.2 mm, compared to the non-printing base. In this case, for example, the non-printing base is provided at the same depth, so that the elevations rolling in the same cylindrical envelope surface result in the same height of the elevations above the ground. In the case of larger raised areas 522 the height of the ground can be greater than that of the individual engravings 514 correlated surveys 513 .

The width is a particularly preferred embodiment b524 from to engravings 514 the printing form 504 corresponding surveys 524 on the color relief cylinder 519 larger than the width b513 the one on the color engraving cylinder 512 corresponding engravings 513 , and the width of these engravings 513 on the color engraving cylinder 512 again larger than the width b514 the corresponding engravings 514 on the forme cylinder 503 or on the printing form 504 (see e.g. 4th ).

In contrast to the above-mentioned raised areas 522 in which the raised area 522 for example over the area of a variety, e.g. B. more than fifty, adjacent engravings 514 on the forme cylinder 503 extends, it is about to engravings 514 the printing form 504 corresponding surveys 524 preferably surveys 524 , which has a maximum width in the area of its smallest diameter, for example b524 of 0.6 mm and / or a width which is at most 0.5 mm larger b524 than that of the corresponding engraving 514 on the forme cylinder 503 have and / or which z. B. individual engravings 514 on the forme cylinder 503 with a width that is ten times larger by a maximum b513 map and / or which, for example, engravings spaced 1 mm apart 514 on the forme cylinder 503 map individually. There are e.g. B. at least a number, in particular a plurality, of the forme cylinder 503 present engravings 514 individually resolved as surveys 524 on the color relief cylinder 519 pictured.

The engravings 513 on the color engraving cylinder 512 are, for example, directly on the outer surface 518 of the color engraving cylinder 512 provided by the cylinder jacket of the color engraved cylinder 512 on the outer circumference of which is at least included, or on the outer circumference of an ink transfer form in the form of a printing form which is in the form of an ink transfer form sleeve which is closed in the circumference 637 , e.g. B. a so-called. Sleeves 637 , or as a finite gravure form, e.g. B. with leading and trailing ink transfer form end can be formed.

The inking device 511 on at least the in the direction of rotation D of the wells 513 comprehensive inking cylinder 512 a restraining device downstream of the above-mentioned job site 526 , e.g. B. a squeegee or an ink knife, through which or viewed in the direction of rotation D after the ink application - and in particular before a nip with a subsequent inking cylinder 519 - before on the outer surface 518 applied ink 517 is removable.

In particular, the inking device 511 on at least that in the direction of rotation D of the color engraving cylinder 512 downstream side of the paint room 516 such a restraint 526 through which viewed in the direction of rotation D on the output side of the ink reservoir 516 , ie in the area of the downstream end of the ink reservoir 516 , on the previously by contact with the lateral surface 518 on this carried ink 517 is removable. The color presentation room 516 is in this version of the paint application on its downstream side in the circumferential direction by the retaining means 526 limited.

The inking device preferably comprises 511 also a sensor device, by means of which a measure for that in the ink reservoir 516 existing color quantity and / or filling level, at least however information about the reaching of a critical filling state, e.g. B. for a lower and / or an upper limit of the fill level.

In a first, e.g. B. in terms of a particularly low color entry advantageous embodiment includes the coloring device 511 on at least that in the direction of rotation D of the color engraving cylinder 512 downstream side of the application site or the color presentation room 516 a restraint 526 , which by - in particular at least in the working or operating position - in contact with the preferably hard and unyielding outer surface 518 of the color engraving cylinder 512 standing, preferably variable or adjustable with respect to its contact force, wiping means, in particular a doctor blade, is formed, by means of which printing ink applied to non-engraved areas 517 - is essentially completely - removable. This is an entry of printing ink 517 in places where on the forme cylinder 503 no ink 517 is particularly reduced from the outset. This is done by completely removing the ink 517 also be understood to be the case that traces of printing ink are still present despite scraping under contact 517 remain on non-engraved surface areas.

The restraint 526 , in particular as a wiping agent, e.g. B. as a doctor blade, is advantageously "positive" or correspondingly "positive" in the inking device 511 arranged, ie adjusted with an inclination to the tangent, so that the tangent at the point of contact with the restraining means 526 , e.g. B. wipers, especially the doctor blade, on the side of the ink reservoir 516 forms an acute angle. This angle prevails z. B. at least in the area of the end of action, ie in a z. B. at least 3 mm long, end portion of the restraint 526 which is in contact or contactless with the outer surface 518 works together.

In a second, e.g. B. with respect to a wear advantageous embodiment, the coloring device 511 on at least that in the direction of rotation D of the color engraving cylinder 512 downstream side of the application site or the color presentation room 516 for example, a restraining means designed as a preferably adjustable color knife 526 include, through which in the working or operating position a small, preferably adjustable distance, for. B. at least 2 microns, in particular at least 5 microns and / or for example less than 100 microns, advantageously less than 50 microns, in particular less than 20 microns, to the outer surface 518 of the color engraving cylinder 512 producible or manufactured in the company. As a result, the printing ink applied to non-engraved areas 517 to a thin layer of e.g. B. at least 2 microns, in particular at least 5 microns and / or for example less than 100 microns, advantageously less than 50 microns, especially less than 20 microns, limited or limited.

In particular in connection with an at least extensive removal of the printing ink 517 , ie the complete or the removal down to a thin layer, from the non-engraved surface areas of the color engraving cylinder 512 a significant color entry is selectively achieved at desired points, which is why the engravings 513 or wells 513 having inking cylinders 512 or color engraving cylinder 512 also as a "selective cylinder" 512 referred to as.

The color relief cylinder 519 has on the circumference, for example, a - preferably elastic and / or at least slightly compressible - material layer, which has the outer surface on its outside 521 trains and the sublime areas 522 or surveys 524 or intervening depressions.

The one by the inking device 511 Color engraving cylinders to be inked 512 and the downstream color relief cylinder 519 place a color unit here - possibly with one or more inking rollers or cylinders arranged in series between them 529 , in the following also as a color train 529 denotes, by which or which printing ink 517 a certain color in the printing unit 500 can be entered and towards the forme cylinder 503 is eligible for funding.

This color train 529 can basically in the region of the downstream end, for. B. directly with the outer surface 521 of the template cylinder 519 , with the forme cylinder 503 or its printing form 504 interacting in the printing unit 500 be arranged. In an advantageous embodiment with regard to multi-color printing, several, e.g. B. at least two such color combinations 529 around the forme cylinder 503 be arranged around. It can be the forme cylinder 503 also one or more in the above manner with a color engraving cylinder 512 executed color combinations 529 and one or more differently executed, z. B. conventional, without color engraved cylinder, color units 532 , e.g. B. Color trains 532 , be assigned with, for example, an ink fountain comprising an ink fountain and an ink fountain roller with a flat surface.

In the case of multiple colors 532 is a so-called.

Color separation of the print image, that is to say a partial print image assigned to this color to be applied. The patterns of depressions 513 and / or surveys 524 ; 524 ' or raised areas 522 on the relevant inking cylinder 512 ; 519 two color trains 529 are therefore, at least to a large extent, different from one another.

In one embodiment, which is preferred, in particular with regard to multicolor printing, is the color train 529 in the area of the downstream end, e.g. B. the color relief cylinder 519 , with another, e.g. B. as a transfer cylinder 531 effective inking cylinder 531 arranged interactively. This is in turn in the printing unit 500 with the forme cylinder 503 arranged interacting and preferably has an elastic and / or compressible outer surface.

In a particularly preferred version of the printing unit 500 for one - especially at the printing point 502 simultaneous - multi-color printing unit 500 is the further inking cylinder 531 as a color collecting cylinder 531 executed or effective. Here, several, for. B. at least two, in the above manner with color engraving cylinder 512 executed color combinations 529 or a combination of one or more in the above manner with a color engraving cylinder 512 executed color combinations 529 and one or more differently executed, z. B. conventional, without color engraved cylinder, color trains 532 with, for example, an ink fountain comprising an ink fountain and an ink fountain roller with a flat surface on the circumference of the ink collecting cylinder 531 be arranged. For example, a total of five color combinations 529 ; 532 be provided, of which, for example, three - e.g. B. lower - color stripes 529 as a selective printing ink 517 color traces 529 (briefly selective color combinations 529 ) and the other two - e.g. B. upper - color trains 532 are conventional (see e.g. 2 B) . In principle, however, there can also be a different heterogeneous division and / or positioning of selective and conventional color combinations 529 ; 532 , e.g. B. a lower and an upper color 532 of five color combinations 529 ; 532 conventional and three selective color combinations 529 in between, or a homogeneous design with exclusively selective color combinations 529 be provided.

Basically, the coloring device 511 arbitrarily on the free, ie not on the nip point to the color relief cylinder 519 or possibly other components concealed, circumference with the outer surface 518 be arranged interactively.

In a first version (see e.g. 1a , 2a and 3a) can the inking device 511 however on that of the color relief cylinder 519 opposite side of the color engraving cylinder 512 be arranged. The above contact line or line of the smallest distance is z. B. on that of the color relief cylinder 519 opposite side.

One in execution of the restraint 526 as a scraper, in particular doctor blade, between this and that of the outer surface 518 of the color engraving cylinder 512 formed contact line or in the execution of the restraint 526 as a color knife, the line of the smallest distance on the circumference of the color engraving cylinder 512 is therefore in this first version for the positioning of the inking device 511 on a peripheral portion of the color engraving cylinder 512 that on the the color relief cylinder 519 facing side, especially in the direction of rotation D viewed in front of the intersection with the above vertical plane. In the case of a line of contact, it is of course also to be understood as a contact which, viewed in the circumferential direction, has a real, non-zero width, e.g. B. has a width of up to 2 mm. In the case of contact, this can be achieved by "grinding in" the squeegee edge by contacting the outer surface 518 caused and / or wanted for better sealing.

In an alternative second embodiment (see e.g. 1b , 2 B and 3b) is the inking device 511 on the color relief cylinder 519 facing side of the color engraving cylinder 512 arranged. It is under one side of the color engraving cylinder 512 to understand a half space on one side by the axis of rotation R512 of the color engraving cylinder 512 trending vertical plane.

Where it is for the two above Functionally the same components or groups of components are not distinguished here in the reference numerals used for this.

The inking cylinders 512 ; 519 ; 531 and the inking device 511 can be used together with the printing unit cylinders 501 ; 503 be provided in a common frame or in its own, for example from the printing unit cylinders 501 ; 503 supporting frame different frame 533 ; 538 , e.g. B. partial frame 533 ; 538 , be arranged.

Basically independent of the special position and / or special design of the inking device 511 The inking unit frame is designed to be divisible, but advantageously in connection with one of the above positions and / or designs. It includes a z. B. the at least and the inking device 511 and the color engraving cylinder 512 load-bearing frame 538 , e.g. B. partial frame 538 , with frame walls provided on both sides, which of one or the color relief cylinder 519 and if necessary the transfer cylinders 531 supporting frame part is separable and radially, in particular horizontally, movable or moved away, for example in the open state to form an operating and / or maintenance space between them for the operating personnel. This part of the frame can also be used for the printing unit cylinders 501 ; 503 be the supporting frame part, but is preferred as one only the inking unit 508 assigned subframe 533 executed, which in turn from one of the printing unit cylinders 501 ; 503 load-bearing, preferably spatially fixed partial frame radially of the printing unit part 509 , in particular horizontally, can be moved away, for example in the open state to form an operating and / or maintenance space between them for the operating personnel.

Basically independent of the special position and / or special design of the inking device 511 The inking device is advantageous, however, in connection with one of the above positions and / or designs 511 , but at least the restraint 526 , e.g. B. scraper or squeegee or the ink knife, and possibly the limitation of the ink reservoir 516 on the part of the inking device 511 , regarding the relative radial position to the color engraving cylinder 512 adjustable, for example stronger or closer to the lateral surface 518 and less strong or further away from the lateral surface 518 movable (see e.g. schematically indicated by double arrow 534 ). The positioning is done by an actuator 551 , e.g. B. via one of the actuator 551 included gearbox 527 and / or preferably by one of the actuator 551 included remotely operated drive means 536 . The latter is in an advantageous embodiment as a force-based drive means 536 formed, preferably by a pressure-operated actuator 536 , e.g. B. working cylinder 536 , especially pneumatic cylinders 536 . This can be used especially in training the restraint 526 ensure a positioning force as a doctor blade and / or vary specifically by selecting the pressure level. In the execution of the restraint 526 as - e.g. B. adjustable in distance - color meter can such a force-based drive means 536 for example against a - preferably adjustable - sling. This adjustment movement preferably takes place at least in a region close to the cylinder, ie, for example, at least the last 3 mm before reaching the lateral surface 518 , linear or at least approximately linear. In the case of a pivoting movement about a pivot axis, preferably with a radius of curvature that corresponds to at least twice the color engraving cylinder diameter. A movement is particularly advantageous for which the angle of inclination of the restraint means in the adjustment range 526 or the entire moving arrangement is retained. The movement can take place via a guide which defines the movement path 576 be fixed in the drive train between drive means 536 and includes the component to be moved or, parallel to the drive train acting on the component, forces the component to be moved onto the movement path. The the angle of inclination of the restraint 526 or the paint room 516 on the part of the inking device 511 delimiting parts, e.g. B. with respect to the horizontal, maintaining leadership 576 can e.g. B. as a straight linear guide in particular 576 or as a parallelogram guide 576 be provided. The inking device 511 or at least the restraint 526 and the paint room 516 on the part of the inking device 511 For this purpose, forming parts are, for example, directly or indirectly on a side part 537 , e.g. B. side frame part 537 , especially side plates 537 , correspondingly movably mounted, which in turn is fixed to the frame on a frame 538 of the inking unit 508 or preferably on one with respect to the axis of rotation R512 of the color engraving cylinder 512 solid holding means 539 , e.g. B. Bracket 539 , is stored. In the preferred case that the color engraving cylinder 512 e.g. B. adjustable for adjustment purposes in the radial direction in the frame 538 of the inking unit 508 is stored, is due to the cylinder-fixed storage of the inking device 511 or the inking device 511 load-bearing frame part 537 even if the position of the color engraving cylinder changes 512 a constant relative position of the restraint 526 to lateral surface 518 guaranteed. The bracket 539 can, for example, be fixed to an outer, non-rotating bearing ring of an end-side cylinder journal 559 or front ends 559 one the inking cylinder 512 load-bearing shaft, both if not explicitly referred to below as "pins" 559 called, the color engraving cylinder 512 receiving radial bearing be arranged. The outer bearing ring can be executed eccentrically with respect to its bore and in z. B. a frame bore rotatable or in an eccentric ring in z. B. a rack hole provided eccentric bearing.

The actuating mechanism and its drive can in principle be designed such that in addition to adjusting the position of the restraint 526 and / or the contact force or a distance, also a turning off of the inking device, which is necessary, for example, for maintenance or set-up purposes 511 over a large travel range, e.g. B. at least 50 mm, in particular 100 mm away. The coloring device is in an advantageous embodiment 511 however, e.g. B. on the frame part 537 , from the color engraving cylinder 512 movable away, for example around one on the frame part 537 intended axis 541 pivotable, stored. The back and forth movement can be done manually or by a remotely operated drive means.

Basically independent of the special position and / or special design of the inking device 511 The inking device is advantageous, however, in connection with one of the above positions and / or designs 511 , but at least the restraint 526 , e.g. B. as a scraper or squeegee or as a farm eater, and possibly the limitation of the ink reservoir 516 on the part of the inking device 511 , in the relative axial position to the color engraving cylinder 512 movable, in particular changeable, for example oscillating between a right reversal position and a left reversal position. This movement corresponds to e.g. B. in 3a and 3b a movement in or out of the leaf plane and is therefore only by a slightly oblique double arrow 542 and the symbols representing an arrow end and an arrow tip are indicated. This traversing movement is preferably carried out over a stroke of at least 2 mm in total, for. B. between 3 to 8 mm, preferably between 4 to 6 mm stroke. The storage of the inking device 511 or at least the restraint 526 , e.g. B. as a scraper or squeegee or ink knife, and possibly the limitation of the ink reservoir 516 on the part of the inking device 511 is designed to an axial traverse over a stroke of at least 2 mm, for. B. a stroke between 3 to 8 mm, preferably between 4 to 6 mm. The axial movement takes place via an axial drive 552 , for example traversing drive 552 , e.g. B. via a traversing drive 552 included gearbox 528 and / or preferably by one of the traversing drive 552 includes remote-controlled drive means 543 , especially an electric motor 543 . The inking device 511 or at least that Restraint 526 , especially the squeegee, and the ink room 516 on the part of the inking device 511 forming parts are for example on the frame part 537 or the color engraving cylinder 512 load-bearing frame, frame part or partial frame 538 accordingly axially movable. This storage, which enables the axial relative movement, can, as explained above, be carried out centrally or directly on the frame 538 of the inking unit 508 or preferably on a cylinder-fixed holding means 539 be provided. A frequency for the axial traversing is, for example, between 0.05 and 1.00 Hz, preferably in the range from 0.1 to 0.3 Hz.

Basically independent of the special position and / or special design of the inking device 511 A device is advantageous, however, in connection with one of the above positions and / or designs 544 for axial equalization of the color level in the ink storage room 516 , e.g. B. a color distribution device 544 , in particular paint mixing device 544 , intended. This includes, for example, at least one as a distributor finger 546 effective color distributor 546 or especially paint stirrer 546 that with a front end 553 - At least in the working position in the paint room 516 especially so far that it ends 553 in operationally before the restraint 526 or the doctor blade immerses or can immerse the existing filling level. The color distributor 546 the color distribution device 544 can instead of the submerged end 553 or preferably additionally a color outlet 619 include that on the color manifold 546 axially in the ink room 516 is moved back and forth or is movable and thereby to supply ink 517 distributed. In operation, it forms in the paint room 516 available, especially viscous printing ink 517 a so-called ink roller, which is directly in front of the restraint 526 by contact with the lateral surface moving past 518 forms. The at least one color distributor 546 is axially movable, for example, directly or indirectly on the inking device 511 supporting frame 533 ; 538 or preferably on a side part 537 ; 558 the inking device 511 or directly on an optional cross member 547 , e.g. B. Traverse 547 stored. For example, he is on a sled 548 arranged in a linear guide 549 axially movably and - for example via a gear which transforms a rotation into a linear movement - by a drive means 581 , e.g. B. an electric motor 581 , movable back and forth. The color distributor is advantageous 546 with a frequency between at least 0.3 Hz, preferably at least 0.5 Hz back and forth.

Basically independent of the special position and / or special design of the inking device 511 The color engraving cylinder is advantageous, however, in connection with one of the above positions and / or designs 512 operational - ie for example for an exchange or for maintenance and / or armament purposes and / or z. B. without disassembling additional inking unit components - can be removed in the inking unit 08 or its frame 533 ; 538 stored. In one embodiment, this can be a removal in the axial direction of the inking cylinder 512 or in another embodiment, a removal in the radial direction.

Basically independent of the special position and / or special design of the inking device 511 The color engraving cylinder is advantageous, however, in connection with one of the above positions and / or designs 512 temperable, in particular designed to be flowed through by temperature control fluid.

Basically independent of the special position and / or special design of the inking device 511 , but advantageous in connection with one of the above positions and / or designs is the color master 516 ink to be fed 517 in the pipeline upstream of an exit into the paint room 516 temperable. For this purpose, for example, a temperature control device is in the paint supply line 604 especially heating device 604 intended.

Basically independent of the special position and / or special design of the inking device 511 The color engraving cylinder is advantageous, however, in connection with one of the above positions and / or designs 512 rotationally by its own, from the drive of the other inking cylinder 519 ; 531 and / or printing unit cylinders 501 ; 503 mechanically independent drive motor 616 drivable.

Without restricting the above-mentioned designs and variants, a first exemplary embodiment is further detailed below, in which the inking device 511 on that of the color relief cylinder 519 opposite side of the color engraving cylinder 512 is arranged. The restraint acts 526 e.g. B., for example as an ink knife or in particular as a doctor blade, on the upward rotating side of the engraving cylinder in operation 512 with this together. The latter applies in particular to the execution of the inking unit 508 with additional transfer cylinder 531 , especially ink collecting cylinders 531 .

The inking device 511 on at least the in the direction of rotation D of the wells 513 comprehensive inking cylinder 512 downstream side of the above-mentioned application site or the color presentation room 516 the restraint 526 , e.g. B. a squeegee or an ink knife, through which or in the operating direction D considered after the ink application - and especially before a nip point with a subsequent inking cylinder 519 - before on the outer surface 518 applied ink 517 is removable. In this version the restraint is 526 preferably designed as a doctor blade and removed on the outer surface 518 previously applied ink 517 of non-engraved areas in the above sense completely.

The contact line or in the execution of the restraint 526 as a color knife, the line of the smallest distance on the circumference of the color engraving cylinder 512 is preferably in the region of the upper half, e.g. B. in the range of 10 ° to 30 ° above the horizontal, the color engraving cylinder 512 . The retention means, which is preferably designed as a doctor blade 526 is in a two-part restraint holder 554 , especially doctor blade holder 554 , held, especially clamped, the z. B. Color space side of a recording bar 556 and on the outside a releasably connected to the former, for. B. screwed, cover strip 557 having. The restraint holder 554 , especially the mounting bar 556 , can for example be self-supporting and immediate, e.g. B. directly on side panels 537 ; 558 , e.g. B. side frame parts 537 ; 558 , for example side plates 537 ; 558 , be stored, but is preferably on or on a cross member 547 , e.g. B. the traverse 547 , arranged the z. B. on both sides of the front frame parts 537 ; 558 is stored. A part of the mounting bar that continues downwards 556 alone or together with the possibly provided traverse 547 or a possibly provided further component forms the rear, ie the color engraving cylinder 512 opposite limitation of the color presentation space 516 . The color template is at the bottom 516 In a first variant, it is open - except for a color distributor that protrudes from below if necessary 546 a possibly provided color distribution device 544 and / or an ink collecting device provided, for example, underneath 561 for printing ink that drips off during operation or afterwards 517 . There is, for example, a guide device 563 , e.g. B. a one-part or multi-part the lateral surface 518 straight or almost touching baffle 563 provided which is the printing ink 517 to the lateral surface 518 conducts to in the direction of rotation back to the restraint 526 to be transported. Underneath can be a container 562 , e.g. B. a sump 562 for recording, for example, at a standstill from the color storage room 516 running ink 517 be provided.

From the effective edge 566 of the restraint 526 , e.g. B. the squeegee edge 566 that of the recording bar 556 spaced apart is, for example, one in the color presentation space 516 uplifting barrier 564 , e.g. B. Drop barrier 564 , provided by which ink runs off 517 is counteracted at the rear boundary. This barrier 564 can by shaping the mounting strip 556 or with a separate, angled bar 564 be educated.

On the front side is the color presentation room 516 through side panels 567 , e.g. B. side plates 567 limited. These side panels 567 , also known as a side seal, closes the color space 516 from the side and have on the color engraving cylinder 512 facing side 568 , e.g. B. Seal side 568 , a profile complementary to the cooperating cylinder circumferential section. This means that this side can be positioned almost without a gap on the relevant cylinder circumferential section. The side parts 567 can be formed from an at least slightly compressible and / or elastic material or on the side effective for sealing 568 an edition of a resilient, e.g. B. compressible and / or elastic material. The side parts 567 are z. B. on the face of the mounting strip 556 the restraint holder 554 and / or on the crossbeam carrying them 547 arranged, in particular releasably attached. They can go in the direction of the color engraving cylinder 512 movably mounted and z. B. by spring means, e.g. B. compression spring, in the direction of the color engraving cylinder 512 be biased. The two side parts 567 act directly on the engraving 513 having lateral surface 518 or in the case of one from the color engraving cylinder 512 worn, the engravings color transfer form preferably together with edge areas of this color transfer form.

With the mounting bar 556 the restraint holder 554 and / or with the cross member carrying them 547 can be a holding device 569 be provided on which a possibly provided, below-described acceptance device 572 arranged, in particular can be arranged releasably.

The the color template room 516 on the part of the inking device 511 immediately surrounding components, e.g. B. at least the restraint holder 554 including restraint 526 , the cross member, if any 547 , possibly the side parts 567 , a possibly provided acceptance device 572 or holding device 569 for an acceptance device 572 and, if necessary, firmly on these components, e.g. B. detachably arranged for maintenance or set-up purposes other components such. B. further restraint means and / or possibly provided color knife drives, are also in their entirety below as a color unit 571 referred to, especially in connection with a restraint designed as a color knife 526 also as a color box 571 .

This color unit 571 is preferably taken as a whole from the inking device 511 removable, but advantageously at least within the inking device 511 from a working position to one of the color engraving cylinder 512 Maintenance or set-up position further away can be moved. This is the color unit 571 movable, in particular linearly movable, directly on the color engraving cylinder 512 load-bearing frame, frame part or partial frame 538 or preferably on a side part 537 ; 558 , e.g. B. frame part 537 ; 558 , especially a side plate 537 ; 558 , stored, which in turn is directly or indirectly - in turn movable or rigid - on the color engraving cylinder 512 load-bearing frame, frame part or partial frame 538 is worn. The linearly movable mounting is preferably carried out via a linear guide 573 , e.g. B. dovetail guide 573 .

In an advantageous embodiment already mentioned above, the restraint is 526 , especially the restraint 526 comprehensive and / or the color presentation room 516 limiting color unit 571 by an actuator 551 with z. B. a drive means 536 and / or a transmission 527 , in his or her radial position relative to the color engraving cylinder 512 adjustable, in particular on this on and off this, trained. The drive means 536 is in an advantageous embodiment as a force-based drive means 536 trained, preferably as a pressure-operated cylinder 536 , especially pneumatic cylinders 536 . This can be used especially in training the restraint 526 as a doctor blade ensure a certain setting force and / or vary selectively by choosing the pressure level. In the execution of the restraint 526 as - e.g. B. adjustable in distance - color meter can such a force-based drive means 536 the restraint 526 or the color unit 571 for example against a - preferably adjustable - sling. In an advantageous embodiment, this is also possible via a linear guide 576 or, if necessary, can also be realized by pivoting about a pivot axis, a parallelogram guide for the radially movable bearing is to be preferred in one embodiment, which is particularly preferred in connection with a possible traversing movement 576 intended. This is at least the restraint 526 comprehensive color unit 571 the color unit on both sides or each 571 or the restraint 526 in the above sense, relatively movable side part 558 mounted on two rockers 574 - in particular in the manner of two mutually opposite sides of a parallelogram. These two wings 574 grab the restraint 526 supporting color unit 571 or on the restraint holder 554 on two at different distances from the color engraving cylinder 512 standing positions and are pivotable about pivot axes which are spaced apart from one another accordingly. On the frame side, they can be pivoted at the same distance above one another about respective pivot axes, the distance between the pivot axes on the respective rocker 574 for both wings 574 one is yourself.

The wings 574 are for example in the event that the restraint 526 or the comprehensive color unit 571 are axially movable or changeable, preferably as elastically deformable rockers 574 , e.g. B. formed as a sheet metal strip.

The wings can be mounted on the frame 574 directly on the color engraving cylinder 512 load-bearing frame, frame part or partial frame 538 , or indirectly on such a frame, frame part or partial frame 538 connected, one- or multi-part side or frame part 537 be stored. The wings are preferred 547 on the frame side on the one-part or multi-part side or frame part 537 mounted on which also the drive means causing the actuating movement 536 attacks on the frame side. As a drive 536 is possibly an electric motor, but here preferably a pressure-operated cylinder 536 , especially pneumatic cylinders 536 , intended. In the event that the above-mentioned axial mobility or traversing is provided, the drive means is coupled to the drive means 536 to the color unit 571 or the restraint holder 554 via an articulated connection 577 , e.g. B. via a ball joint head 577 .

The color engraving cylinder 512 and the inking device 511 can directly on the printing unit frame or on the relevant partial frame 538 ( 533 ) be arranged. In an advantageous further development, they are on side parts 578 one the color engraving cylinder 512 and the inking device 511 bearing supporting frame, which - for example via slide or in particular roller bearings - as a unit, in particular along a horizontal direction, on guides 579 movable, for example movable, in particular with the color engraving cylinder 512 to the downstream inking cylinder 519 is on or off this.

In an advantageous embodiment with changeable or changeable retention means 526 or changeable or changing color unit 571 is basically an axial drive 552 an axially acting linear drive, e.g. B. an electric motor rotated and reversible in the direction of rotation spindle drive, in particular ball screw drive, or a reversible linear motor in the direction of movement can be provided. In a preferred embodiment here, the axial drive takes place via the rotation of an electric motor 543 executed drive means 543 into a linear motion gear 528 . This includes, for example, a rotatable, with an axis of rotation z. B. perpendicular to the desired axial direction Eccentric disc 583 which in a recess 584 engages with the restraining means holder on a crosswise fixed or at least stiff 554 connected component is provided. The latter can be an extension, for example 586 , e.g. B. a tab 586 , be that on the color unit 571 directly or - in the case of an above-mentioned removability - on the color unit 571 radially movable side part 558 is arranged. The recess 584 viewed in the axial direction has a clear width that is the outer diameter of the eccentric disc 583 corresponds to or is slightly larger. Perpendicular to this, for example, a larger clear width is provided, which is at least the diameter of the eccentric disc 583 plus the double eccentricity. The eccentric disc 583 can by the electric motor 581 directly, or via a gearbox 587 , e.g. B. here a corner gear 587 , be driven.

In an advantageous embodiment with an above-mentioned color distribution device 544 , includes the inking device 511 an above facility 544 for axial color distribution and / or equalization with one in the axial direction of the color engraving cylinder 512 considered (see e.g. double arrow 588 ) axially moveable color distributor 546 . The at least one color distributor 546 , e.g. B. Distribution fingers 546 , is here, for example, over a sled 548 on one - e.g. B. from the above traverse 547 different - cross beams 589 , e.g. B. another traverse 589 , axially movably mounted, which in turn in each case on the end face, directly or indirectly on the inking device 511 supporting frame 533 ; 538 or preferably on a side part 537 ; 558 the inking device 511 is stored. The color distributor 546 the color distribution device 544 can instead of the submerged end 553 or preferably additionally a color outlet 619 include that on the color manifold 546 axially in the ink room 516 is moved back and forth and is movable and thereby the ink to be fed 517 equally axially distributed.

The - here z. B. only - color distributor 546 is on a sled 548 arranged in a linear guide 549 axially movably supported and - for example via a gear which converts a rotation into a linear movement 582 - by a drive means 581 , e.g. B. an electric motor 581 , movable back and forth. The gear 582 is here preferably as a gear unit transforming a rotation into a linear movement 582 , in particular a traction mechanism transmission 582 executed. It includes a traction device, preferably rotating 591 , e.g. B. a toothed belt 591 on which of the in or on the leadership 549 , especially linear guidance 549 , stored sledge 548 is fixed in such a way that the axially moving traction means 591 or the run of a rotating traction device 591 follows, on which it is - preferably releasably - fixed. Here is the traction device 591 For example, clamped on a sled-fixed block. On the sledge 548 For example, rollers are provided which interact with lateral, axially extending guides. The traction device 591 is for example by a - z. B. by the traction means 591 partially wrapped drive wheel 592 , e.g. B. Pulley 592 , drivable or driven. This is due to the electric motor 581 driven or driven directly or via a gear.

The reversal of movement can be controlled, for example, via a contactless sensor 617 , e.g. B. a proximity switch 617 respectively. In addition, an emergency stop switching element 618 , e.g. B. designed as a mechanically actuated emergency stop switch 618 , be provided, which is on the face of the carriage 548 or one with the sledge 548 axially moving component is provided in the path of movement.

The distributor finger 546 can be in the area of its front end, effective for the distribution 553 , e.g. B. a mixing head, 553, several stirring elements 593 include which, for example in the manner of paddles or as - z. B. multi-row arrangement of tines can be formed.

In an advantageous embodiment of an above-mentioned color distribution device 544 comprehensive coloring facility 511 this comprises a sensor device 594 , by which a measure of that in the color presentation room 516 existing color quantity and / or filling level, at least however information about the reaching of a critical filling state, e.g. B. for a lower and / or an upper limit of the fill level.

For this purpose, includes between sledges 548 and mixing head 553 lying arm a section 596 , which is designed with a lower transverse stiffness in the axial direction compared to other arm sections. In particular, this section 596 with such reduced transverse rigidity so that the arm in this section 596 in working position with axial movement at operating speed and sufficiently filled ink reservoir 516 - undergoes a significant elastic bend at least in the axially central movement section and / or at maximum axial speed. In this section 596 is on at least one side pointing in the axial direction, preferably on both sides, a sensor extending in the longitudinal direction of the arm and detecting a stretch and / or compression 597 , e.g. B. Strain Gauges 597 , intended. The strain gauge (s) 597 load-bearing section 596 can be achieved by a web-like taper 598 embrace opposite arm sections. The area of rejuvenation 598 can be used with compressible and / or elastic filling pieces 599 be filled. Basically, the arrangement of one or several such sensors 597 in a simple design - possibly with losses in accuracy - can also be provided on an arm of homogeneous cross section.

The sensor device 594 or the strain gauge (s) 597 is or are operatively connected to signaling and / or control means, not shown.

In normal operation, ie a sufficient fill level, it delivers in the ink storage room 516 present printing ink 517 for the color distributor that is in the working position and is changing at operating speed 546 a certain resistance, which results in a certain, operationally desired bend and thus a certain signal. Is the color template room missing? 516 now on ink 517 , the resistance decreases and the signal representing the elongation changes accordingly. A lower limit can be determined empirically, for example. Although an evaluation of the current fill level via a correlation of the signals with the fill level over a range is conceivable, monitoring for reaching a limit value is provided in a simpler embodiment, upon reaching which a warning and / or preferably a refill of a certain amount of printing ink is provided 517 he follows. For this purpose, the evaluation and / or control means relating to the fill level can be provided with an actuating and / or conveying device 601 , e.g. B. a valve or preferably a pump 601 , be connected through which printing ink 517 from a color reservoir 602 , e.g. B. a paint tank 602 , in the color presentation room 516 is eligible. The funding takes place z. B. via a line system with at least one flexible or / or at least one rigid line section 603 .

Basically, the supply of the printing ink 517 in the color presentation room 516 on one, e.g. B. in the middle or stationary at several axially spaced locations. This is particularly the case, for example, in the event that no above-mentioned color distribution device 544 is provided. In an advantageous embodiment, the ink supply through the line system takes place via an in the ink reservoir 516 opening color outlet 619 that is axially in the ink room 516 is moved back and forth or is movable. In version with color distribution device 544 becomes the color outlet 619 preferably with the color distributor 553 moves and is especially on the color distributor 553 arranged. The one for the color outlet 619 or at least to a connection point on the slide 548 leading line section 603 can be flexible or rigid as described here. In the case of a rigid design, at least one oscillating part of the line system, in particular the above-mentioned line section 603 , can be on the side of the frame 538 a frame construction 621 be provided, the upstream flexible line section 622 leads and / or offers protection of the operating personnel against collision.

In an advantageous embodiment, the supply system, in particular in the line system, comprises a temperature control device 604 through which the printing ink 517 can be tempered to a constant and / or desired operating temperature. In principle, this can be anywhere in the conveying path between the color reservoir 602 and color exit point, e.g. B. ink outlet 619 , in the color presentation room 516 provided and be carried out in principle in any manner. However, it is preferred here as a heating device based on electrical resistance 604 or a heater based on electromagnetic induction 604 formed and / or is in a - preferably rigid - line section 603 , e.g. B. integrated into its cable sheath. An advantageous embodiment comprises, for example, a tubular sleeve made of ferrous material that can be excited by a coil winding and which is arranged directly or via a non-magnetic and / or thermally highly conductive coaxial sleeve, e.g. B. a copper sleeve, the actual line itself forms or surrounds such. The line section 603 and / or an outlet-side end of the temperature control device 604 is preferably close in the feed system, e.g. B. less than twice the width b512 of the color engraving cylinder 512 removed, intended for color exit.

Particularly advantageous for an embodiment in which the restraint means 526 on the side of the color engraving cylinder that rotates upwards during operation 512 interacts with this, but not just for such, arrangements are in place on the downstream side of the edge 566 of the restraint 526 , e.g. B. the squeegee edge 566 , no or at least a large amount of printing ink 517 collects. This can be a measure, for example, according to which the restraint 526 on its downstream side, at least in an area close to the edge, a paint-repellent, for. B. oleophobic surface layer, e.g. B. has coating.

Instead or in addition to this, for example, there is an acceptance device 572 provided, through which, if necessary, on the downstream side of the edge 566 of the restraint 526 , e.g. B. the squeegee edge 566 , collecting ink 517 is removable, in particular removable. As a result of the highly viscous nature of the printing ink 517 can this - e.g. B. even with restraint employed as a doctor 526 - gradually under the edge 566 step through and accumulate on the other side. This can also be done by conveying in the engravings 513 be justified. The removal from the downstream side of the edge 566 can basically be done in different ways respectively. For example, from the acceptance device 572 a blowing device directed towards the downstream edge region, e.g. B. a so-called air sword, can be included, through which otherwise accumulating ink 517 continuously or clocked on the outer surface 518 blown and always transported in small quantities.

In an advantageous embodiment shown here, the removal device comprises 572 a - preferably over at least the entire width of the restraint 526 and / or by the side parts 567 front of limited color space 516 extending - cleaning tape 606 , which is adjacent to the downstream edge 566 of the restraint 526 at a short distance from the lateral surface 518 of the color engraving cylinder 512 , e.g. B. less than 10 mm, e.g. B. less than 5 mm, preferably less than 3 mm apart, is guided past this or can be passed. The distance from the edge is 566 viewed in the direction of rotation z. B. also less than 10 mm, e.g. B. less than 5 mm, preferably less than 3 mm. The fresh cleaning tape is preferred 606 from a stock 608 taken, e.g. B. a role 608 processed, possibly via one or more deflection elements 611 , e.g. B. pulleys 611 , in the angle between the lateral surface 518 and downstream side of the restraint 526 introduced there by a - preferably wedge-like immersed in the angle - deflecting element 607, z. B. guide wedge 607 , deflected, and possibly via one or more deflection elements 612 , e.g. B. pulleys 612 in one shot 609 collected, e.g. B. on a roll 609 is wound up. As a cleaning tape 606 is preferably an at least slightly absorbent cleaning tape 606 , especially a paper web 606 , intended. The above-mentioned elements of the acceptance device 572 are preferred in a common rack 613 arranged, which for example as a whole from the coloring device 511 removable, e.g. B. of the above holding device 569 - For example, after opening any holding and / or locking device provided 614 - is removable.

In a variant for the coloring device 511 - Exemplified on and particularly advantageous, but not only for the first embodiment - is the color space 516 in operation, ie in the position of the downstream restraint 526 also on the upstream side by at least one further retention means, preferably designed as a doctor blade 623 essentially completely closed. In doing so, the further restraining device can be used 623 as a wiping device or doctor blade preferably there is contact or a small distance, for. B. less than 50 microns, present or be predictable.

In one version of the paint storage room, which is closed on both sides 526 can be used as a chamber in a chambered doctor blade 627 between downstream restraining means 526 , e.g. B. as a doctor blade, and the upstream retention means 623 , e.g. B. as a doctor blade (see e.g. 15 ). This chamber squeegee 627 can, for example, be self-supporting and direct, e.g. B. directly on side panels 537 ; 558 , e.g. B. side frame parts 537 ; 558 , for example side plates 537 ; 558 , be stored, but is preferably on or on an above-mentioned cross member 547 , e.g. B. the traverse 547 , arranged the z. B. on both sides of the front frame parts 537 ; 558 stored.

In addition to this, upstream of the upstream restraint means 623 a guidance device 624 , e.g. B. a baffle 624 , to the outer surface 518 be employed or employable. This is used, for example, to collect and discharge printing ink located in the chamber 517 after the chamber doctor blade has been switched off 627 and is for example via an adjusting mechanism 626 even on the outer surface 518 on and off of this.

Basically independent of the special design of the printing press or printing unit 500 , the special position and / or special training of the inking device 511 or their embodiments and variants, however, the engravings are preferred in connection with one of the mentioned embodiments, embodiments and variants 513 as already mentioned in a first - e.g. B. With regard to simple handling particularly advantageous - execution on the color engraving cylinder 512 , for example directly on the outer surface acting on the outside 518 of the set color engraving cylinder 512 , provided, especially directly on this outer surface 518 produced or engraved and / or arranged thereon inseparably.

The engravings can 513 basically directly in the area of a z. B. metallic cylinder surface 631 a z. B. load-bearing, made of a metallic material such. B. a steel, executed cylinder body 628 , for example the cylinder surface 631 one as a solid cylinder 628 executed, in particular made of a metallic material, preferably made of steel, cylinder body 628 or a single or outer cylinder wall formed in particular from a metallic material, preferably from steel 629 a z. B. as a one or multi-part wooden cylinder 628 trained cylinder body 628 be executed. The above, the wells 513 or engravings 513 load-bearing and / or for the color transfer effective surface area 518 is thus in this version by the outer, for. B. metallic cylinder surface 631 of the cylinder body 628 self-trained (see e.g. 18th ). A shaving one such, made of metallic material cylindrical surface 631 can be done, for example, in the same way as in the production of gravure forms, which are preferably designed with a metallic surface 504 for the forme cylinder 503 apply.

Unless otherwise specifically specified, a metal or metallic material should generally include all for the production of such cylinder bodies 628 Suitable metals and metal alloys, such as. B. steels, in particular cast, construction or, if necessary, tool steels.

The engravings are preferred 513 but not directly on the metal on the cylinder surface 631 provided, but in an outward-facing surface 632 one directly or indirectly on the cylinder body 628 , e.g. B. as a cylinder body 628 , intended or predictable layer 633 , hereinafter z. B. also as an active or top layer 633 designated. This layer 633 is preferably fixed, ie not operationally solvable, e.g. B. via adhesion, on the cylinder surface 631 , short surface area 631 , arranged, for example integrally connected to this. It extends on the color engraving cylinder 512 e.g. B. axially at least over the maximum by the printing unit 500 width to be printed, briefly maximum printing width, and / or the maximum by the color engraving cylinder 512 intended for coloring width z. B. over a width of 750 to 1,000 mm, in particular between 800 mm and 950 mm, and in the circumferential direction over at least one printing length, preferably over the entire circumference. The above, the wells 513 or engravings 513 load-bearing and / or for the color transfer effective surface area 518 is or will be in this embodiment by the outward surface 632 , e.g. B. lateral surface 632 that on the cylinder body 628 intended shift 633 trained (see e.g. 18th , 19th , 20 ).

The layer 633 preferably has a hard surface with e.g. B. a Vickers hardness VH of at least 800 HV 10th , advantageously more than 1000 HV 10, preferably at least 1100 HV 10th , on and / or a small porosity with z. B. a porosity of at most 5%, preferably less than 3%, in particular less than 2%, and / or a Young elasticity of, for example, between 30 to 70 GPa, preferably from 40 to 60 GPa, and / or a transverse contraction number of z. B. 0.20 to 0.30 Poisson and / or a fracture toughness of z. B. 4.0 to 5.0 MPa * m ^1/2 and / or a tensile strength of at least 40 MPa, preferably at least 45 MPa.

The layer is preferred 633 as a ceramic layer 633 , ie made of a ceramic material - in particular with one or more of the above properties - formed. The execution of the ceramic material as technical ceramic is advantageous. The ceramic is preferably designed as an oxide ceramic, particularly advantageously as chromium oxide (Cr ₂ O ₃ ). The ceramic layer 633 is or is preferred as a coating 633 by a plasma spraying process or a flame spraying process on the cylinder surface 631 or an intermediate layer that may be provided on this 636 upset.

The fat d633 , e.g. B. layer thickness d633 , the - in particular ceramic - trained layer 633 amounts to non-engraved areas or areas without recess 513 or engravings 513 for example at most 350 µm, advantageously at most 200 µm, preferably at 160 ± 20 µm

The layer 633 can directly on the cylinder surface 631 arranged, in particular applied, or possibly as an outer layer 633 , ie the active or top layer effective for color transfer 633 , a multi-layer structure 634 be provided.

If advantageous, can be between the cylinder surface 631 and the wells 513 or engravings 513 having top or active layer 633 an intermediate layer 636 , e.g. B. a better adhesion surface 636 , briefly detention surface 636 , be provided. As such an intermediate layer 636 can, in particular at least in the execution of the layer 633 directly on the cylinder body 628 for example a CrNi or Al layering 636 , e.g. B. with a layer thickness d636 from 0.03 to 0.08 mm can be provided.

In a second, also already mentioned - e.g. B. with regard to the use of materials and / or the costs particularly advantageous - execution are the engravings 513 or wells 513 - Basically independent of the special design of the printing press or the printing unit 500 , the special position and / or special training of the inking device 511 or their embodiments and variants, but preferably in conjunction with one of the stated embodiments, embodiments and variants - on the outward-facing surface 632 a color transfer form 637 provided, in the form of a closed in the circumferential direction ink transfer form sleeve 637 , in the following synonymous synonymous briefly as a sleeve 637 designated, trained and on the cylinder surface 631 of the cylinder body 628 can be arranged (see e.g. 21 , 22 and 23 ). Such a sleeve 637 can in principle be formed in one layer, the cylindrical wall in this case solely through the depressions 513 or engravings 513 on the outward facing surface 632 , e.g. B. lateral surface 632 , layer and / or effective for color transfer 633 is formed. This layer 633 can in principle by any, but preferably abrasion-resistant material, for. B. a metallic or preferably a ceramic material.

However, a multilayer design of the sleeve is particularly preferred 637 , for example with a carrier layer 638 , which on its outer circumference directly or indirectly the the depressions 513 or engravings 513 having and / or effective for the color transfer, preferably ceramic, layer 633 , e.g. B. top or active layer 633 , wearing. The backing layer 638 can the inner layer of the sleeve 637 train or, if necessary, with a further inner layer, e.g. B. protective or sliding layer.

The the wells 513 or engravings 513 on the outward surface 632 , e.g. B. lateral surface 632 , layer and / or effective for color transfer 633 is preferably comparable to the layer already specified in more detail above 633 executed. It preferably has a hard surface with z. B. a Vickers hardness VH of at least 800 HV 10, advantageously more than 1000 HV 10th , preferably at least 1100 HV 10th , on and / or a small porosity with z. B. a porosity of at most 5%, preferably less than 3%, in particular less than 2%, and / or a Young elasticity of, for example, between 30 to 70 GPa, preferably from 40 to 60 GPa, and / or a transverse contraction number of z. B. 0.20 to 0.30 Poisson and / or a fracture toughness of z. B. 4.0 to 5.0 MPa * m ^1/2 and / or a tensile strength of at least 40 MPa, preferably at least 45 MPa.

The layer is preferred 633 also here as a ceramic layer 633 , ie made of a ceramic material - in particular with one or more of the above properties - formed. The execution of the ceramic material as technical ceramic is advantageous. The ceramic is preferably designed as an oxide ceramic, particularly advantageously as chromium oxide (Cr ₂ O ₃ ). The ceramic layer 633 is or is preferred as a coating 633 by a plasma spraying process or a flame spraying process on the lateral surface 632 the backing layer 638 or an intermediate layer that may be provided on this 636 upset.

The fat d633 , e.g. B. layer thickness d633 , the - in particular ceramic - trained layer 633 amounts to non-engraved areas or areas without recess 513 or engravings 513 for example at most 350 µm, advantageously at most 200 µm, preferably at 160 ± 20 µm.

The backing layer 638 can in principle by any material, for. B. a metallic material, but is in a preferred embodiment by a carbon fiber material, in particular a carbon fiber composite material such as. B. CFK, trained. The layer thickness d638 is advantageously less than 5 mm, in particular less than 4 mm, advantageously in the range from 2.0 mm to 3.5 mm, preferably from 2.5 mm to 3.0 mm. The carrier layer preferably has 638 a modulus of elasticity in the circumferential direction of less than 65 GPa, in particular less than 45 GPa, preferably less than 30 GPa.

Is preferably between the carrier layer formed, for example, by a carbon fiber material 638 and the wells 513 or engravings 513 having and / or effective for the color transfer, preferably metallic, intermediate layer 636 , a z. B. better adhesion, preferably metallic, surface 636 , intended. This intermediate layer 636 is in an advantageous embodiment by a layer 636 Aluminum, e.g. B. with a layer thickness d636 from 0.10 mm to 0.35 mm, in particular 0.20 mm to 0.25 mm.

A total thickness of the sleeve 637 is preferably 3.0 to 5 mm, in particular 4.0 ± 0.2 mm.

In a - e.g. B. With respect to the thermal conductivity advantageous - alternative design of the sleeve 637 is the backing layer 638 formed from a metallic material, on which directly or possibly via an intermediate layer 636 , e.g. B. CrNi or Al layer, indirectly the wells 513 or engravings 513 on the outward surface 632 , e.g. B. lateral surface 632 , having and / or effective for the color transfer, preferably ceramic, layer 633 is provided.

In the production of a - in the above manner, directly or indirectly - with a ceramic layer 633 provided cylinder body 628 or one a carrier layer 638 comprehensive sleeves 637 becomes the cylinder body 628 or a sleeve-shaped cylindrical carrier layer 638 , e.g. B. as a blank formed by a sleeve-shaped body - if necessary after initially an above-mentioned intermediate layer 636 was applied - with a ceramic layer 633 , e.g. B. with a compared to the above, to be provided for the operational state thickness d633 greater layer thickness d633 , provided by, for example, a plasma spraying process or a flame spraying process, in particular coated. Then the blank, which may be coated in excess, e.g. B. coated cylinder body 628 or sleeve blank, rounded to the desired outside diameter. Such an outer diameter is z. B. between 260 and 300 mm, in particular from 270 up to 290 mm. The coated cylinder body, which may be ground to the desired diameter 628 or sleeve 637 is then with the wells 513 or engravings 613 Mistake. This is preferably done by a laser. This is advantageously a laser with a near, in particular short-wave infrared range, for. B. between 950 and 1,200 nm, preferably at 1,064 ± 20 nm radiation maximum. It is designed, for example, to provide a preferably pulsed beam with a beam cross section of 10 to 15 μm and / or a focal length of 70 to 90 μm and / or with a repetition rate of 400 to 600 kHz in the region of the focus, preferably adjustable.

The one with the layer 633 provided cylinder body 628 , e.g. B. together with this possibly already included or to be provided front pin 559 , forms after the recesses have been made 513 or engravings 513 the ready-to-use color engraving cylinder 512 with those on its outer surface 518 provided recesses 513 or engravings 513 out. In the version already mentioned, in which the color engraving cylinder 512 in the inking unit 508 or its frame 533 ; 538 is removably stored during operation, is the color engraving cylinder 512 - For example for a new print job or for the replacement of one in the area of the shift 633 worn color engraving cylinder 512 - against a new, e.g. B. Whole new or revised, color engraving cylinders 512 exchangeable or removable after the end of production.

In the second version, after which the wells 513 or engravings 513 showing layer 633 from an ink transfer form sleeve 637 , e.g. B. Sleeve 637 , trained color transfer form 637 is included, the cylinder body is preferably made of steel 628 or its preferably made of steel cylinder wall 629 for the formation of a ready-to-use color engraving cylinder 512 with which the wells 513 or engravings 513 on its lateral surface 518 comprehensive sleeve 637 to be fitted or removed at the end of production or for a change of production.

In an embodiment mentioned above, the color engraving cylinder 512 in the inking unit 508 or its frame 533 ; 538 is removably stored during operation, is the color engraving cylinder 512 or the still empty cylinder body 628 - For example, to set up a new print job or to replace a worn sleeve 637 - from the inking unit 508 removable. To equip with or to open a new sleeve 637 , the color engraving cylinder 512 e.g. B. on the inking unit 508 taken. Possibly. after the cylinder body 628 from a previously worn sleeve 637 was freed on the cylinder body 628 the new sleeve 637 raised. For this purpose, preferably pulling on a sleeve 637 supporting funds are provided.

In a first embodiment, the cylinder body comprises 628 than pulling up a sleeve 637 supporting means in the area of the cylinder surface 631 one or more outlet openings 641 ; 644 , e.g. B. Blow holes 641 ; 644 which are at least for removing or pulling up a sleeve 637 A pressurized fluid, in particular compressed air, can be applied to it from the inside via a line system. It is preferred in at least a portion of the cylinder base body that is close to an end face 628 at least one first - in particular near the face - outlet opening 641 or first group of circumferentially distributed or spaced apart - preferably lying on the same circumferential line - outlet openings 641 are provided, through which - e.g. B. to pull on a new sleeve 637 - One with its front end via the at least one first outlet opening 641 or first group of outlet openings 641 pushed ink transfer form sleeve 637 when pressure is applied from the inside with a radially outward force. This first outlet 641 or group is, for example, viewed in the axial direction at most by ± 10 mm from the lateral edge of the cylinder section of constant cylinder body diameter that can be used for coloring D628 spaced. This section can - at least on the side from which the sleeve 637 to be pulled up - directly in the area of the front edge of the cylinder barrel 639 or immediately next to an end cap 662 kick off.

However, the cylinder bale is preferred 639 with a width which is larger than the maximum width intended for inking and / or the maximum printing width b639 trained and on the side from which pulling sleeves 637 should be chamfered in the area of its bale edge. For this purpose, it preferably has on this side in the region of the front end a smaller diameter than the above-mentioned nominal diameter, which has an axial section 642 away from the front end until at the very beginning of a width intended for the maximum use for coloring increases steadily to the full nominal diameter. The increase with increasing axial distance from the front edge can be linear and against the section of constant nominal diameter z. B. be inclined by an angle of 0.5 ° to 2 °. This is an end of the sleeve 637 on the cylinder surface 631 simplified. The first outlet opening is preferably 641 or group of outlet openings 641 in the transition area between the axial section 642 arranged with increasing diameter and the constant nominal diameter. A groove running in the circumferential direction can provide support 643 be provided, in which the first the first outlet opening 641 or the outlet openings 641 the first group. This promotes an underwashing of the sleeve end to be put on and an - at least slight - expansion of the sleeve 637 reached.

Is preferably spaced in the axial direction from the first outlet opening 641 or first group, e.g. B. in a medium bale area, e.g. B. in the range between one and three quarters, in particular between two and three fifths of the bale length, at least one second outlet opening 644 or preferably a second group of a plurality of outlet openings distributed or spaced apart in the circumferential direction, preferably lying on the same circumferential line 644 intended.

In the area of the side, the one for pulling up the sleeve 637 opposite, in an advantageous development, a sling 649 be provided, which is radial over the abovementioned section of constant cylinder body diameter D628 protrudes. This sling 649 is, for example, due to a constant cylinder body diameter in the region of the end face over the lateral surface D628 uplifting, circulating sales 649 educated.

The first exit opening 641 or group of outlet openings 641 and the advantageously provided second outlet opening 644 or group of outlet openings 644 are by at least one in the cylinder body 628 , e.g. B. axially, extending supply line 646 ; 647 can be supplied with compressed fluid, in particular compressed air. A single, respective or common entry point 648 in the cylinder body 628 for supply with the outlet openings 641 ; 644 with pressure fluid is preferably in the area of the end face or in the area of a pin 559 intended. As an entry point 648 is z. B. a coupling piece 646 for compressed air, for example in the manner of a valve coupling 648 , intended. In the case of a first and second outlet opening 641 ; 644 or first and second group of outlet openings 641 ; 644 are for this z. B. separate axially extending supply lines 646 ; 647 provided which over a same in the cylinder body 628 leading entry point 648 are available.

Such outlet openings 641 ; 644 and supply lines 646 ; 647 can in the outer cylinder wall 629 one as a hollow cylinder 628 trained cylinder body 628 (see e.g. 25th ) or near the surface, e.g. B. closer to the circumference than the cylinder axis, a solid cylinder 628 trained cylinder body 628 (see e.g. 26 ) be provided.

When pulling on a sleeve 637 comes with a sleeve 637 the outlet opening near the front 641 or group of outlet openings 641 with pressure fluid, in particular compressed air, the sleeve 537 with one end leading over the front end onto the cylinder body 628 pushed out of the exhaust port 641 or group of outlet openings 641 escaping compressed air under the sleeve 637 an air cushion forms and / or the sleeve 637 at least in the above the outlet opening 641 or group of outlet openings 641 lying circumferential section slightly, e.g. B. by at least 5 microns, in particular at least 10 microns in diameter. Is - as in an advantageous embodiment - a second, for. B. Above outlet opening 644 or group of outlet openings 644 provided, this is also acted upon simultaneously or successively with the first with pressurized fluid, with the fluid already below the outlet opening 644 or group of outlet openings 644 axially pushed sleeve 637 the fluid cushion is renewed and / or a slight widening occurs again.

Previously, the cylinder body was 628 for example from the inking unit 508 removed, at its other end, z. B. on the cylinder pin 559 , on a holding device such that the sleeve 637 undisturbed on the cylinder body 628 until it can be pushed into its end position. A connection between a source of pressurized fluid, e.g. B. compressed air source, to the entry point 648 in the cylinder body 628 manufactured.

If a sleeve is to be removed before loading 637 this sleeve 637 from - for example in the above-mentioned holding device - cylinder body 628 deducted, while at least one, in particular at least the outlet opening located in the central region 644 ; 641 , preferably all outlet openings 641 ; 644 with or under pressure fluid, preferably compressed air.

After the cylinder body 628 with a (new) sleeve 637 is or has been equipped, the color engraving cylinder removed for this purpose, if applicable 512 back to the inking unit 508 used.

In a version with to the outlet openings 641 ; 644 alternative, pulling on a sleeve 637 supporting means includes the hollow cylinder 628 executed cylinder body 628 inside the outer cylinder wall 629 as supportive means at least a first one, preferably rotationally symmetrical body 664 , for example a first sleeve 664 , e.g. B. first tube sleeve 664 , which are externally central or immediate with their outside on the inside of the cylinder wall 629 supports. In a preferred embodiment, it is supported inwards with the inside directly or indirectly on the outside of a second, preferably rotationally symmetrical body 666 , e.g. B. a second sleeve 666 , for example second tube sleeve 666 , from. The first body 664 is relative to the outer cylinder wall 629 , in an advantageous embodiment between the outer wall and the second body 666 , axially movable. In an advantageous embodiment, the first stands, in particular as a sleeve 664 trained body 664 on both ends with a pressurized fluid space 667 ; 668 , e.g. B. pressure chamber 667 ; 558 in operative connection, through the alternating action of which an axial movement - in the manner of a two-chamber piston system - is or can be effected in one or the other direction.

At least one side of the first, in particular rotationally symmetrical body 666 and the side of the adjacent component facing this side, namely preferably the cylinder wall 629 or the optionally provided second, in particular rotationally symmetrical body 666 , are conical in opposite directions on the sides facing one another, that is to say they each have a radius which varies continuously in the axial direction, and interact with one another in the manner of a wedge drive when moving axially towards one another with a movement component and / or application of force resulting in the radial direction. With appropriate dimensioning of the wall thicknesses of the inner body 664 and a weaker cylinder wall 629 , the latter when the pressure chamber causing the two conical surfaces to move towards one another, in particular pushing one into the other 668 - At least slightly - elastically widened radially. Conversely, when the conical surfaces are moved apart, the pressure chamber causing the separation is acted upon 667 the radial on the cylinder wall 629 acting force withdrawn, causing the previously elastically expanded cylinder wall 629 returns to their less or even less stressed radius.

In an advantageous embodiment, the inside of the cylinder wall 629 and the outside of the first sleeve 664 formed with opposite conical surface. With a correspondingly rigid first sleeve 664 , the fixed storage of this sleeve 664 on a first end cap 662 ; 663 , the fixed mounting of the cylinder wall 629 on the other end cap 663 ; 662 and an arrangement of the pressure chamber relating to the first end face 668 than from the front with the outer cylinder wall 629 interacting, the second sleeve 666 omitted.

In a preferred embodiment, the pressure fluid here is a liquid under pressure, in particular an oil under pressure, and / or one with the cylinder body 628 Pressure fluid source connectable via corresponding lines and a connection are provided. The components in question are hydraulically displaced axially against each other.

Pulling on a sleeve 637 , if necessary with previous removal of a previously worn sleeve 637 takes place, for example, in the same way as in connection with the outlet opening (s) 641 ; 644 trained means of support was set out, but with the difference that for pulling and removing the pressure chamber causing pulling apart 667 is applied and for fixing the drawn sleeves 637 the pressure chamber causing the movement towards one another 668 with pressurized fluid, in particular with pressurized oil. The pressure chambers 667 ; 668 are previously connected to a source of pressurized fluid, in particular an oil hydraulic pump.

Basically independent of the special design of the printing press or printing unit 500 , the special position and / or special training of the inking device 511 , their embodiments and variants and / or the explanations, embodiments and variants described above for the type of arrangement of the depressions 513 or engravings 513 on the color engraving cylinder 512 and / or pulling up a sleeve 637 supporting means, but preferably in connection with one of the mentioned designs, embodiments and variants is the color engraving cylinder 512 , especially its cylinder body 628 , can be tempered in a particularly advantageous embodiment, in particular designed to be flowed through by tempering fluid.

For this purpose, it points on one of its end faces, in particular coaxially to the axis of rotation R512 running, a flow of tempering agent 651 and on the other or preferably the same end face, in particular coaxially to the axis of rotation R512 trending, a temperature control reflux 652 . Inflow and return flow take place, for example, in line sections which are coaxial to one another 651 ; 652 and / or via a rotating introduction.

Inside the cylinder barrel 639 of the color engraving cylinder 512 or cylinder body 628 can the tempering fluid - z. B. depending on the structure of the cylinder body 628 - be performed in different ways. So can when training the cylinder body 628 as a hollow cylinder 628 for example an extensive space between a cylinder wall 629 and a central management if necessary 658 , e.g. B. pipeline 658 can be flowed through with temperature control fluid. Through the pipeline 658 If necessary, temperature control fluid to be supplied can be conveyed into the opposite end region, from which it flows back via the cavity, or vice versa.

In a - e.g. B. with respect to a better guided temperature fluid flow - advantageous embodiment are for the - preferably close to the cylinder jacket flow - one or more flow channels 653 ; 654 with z. B. each with respect to the maximum, perpendicular to the cylinder axis cross-sectional area small flow cross-section (viewed perpendicular to the respective direction of flow), for example at most one tenth, in particular at most one twentieth of the maximum cylinder body cross-sectional area. In order to ensure a sufficiently rapid fluid exchange, the total flow area is, for example, less than a quarter, preferably less than an eighth, in particular less than a twentieth, of the maximum cross-sectional area of the cylinder body.

In execution as a hollow cylinder 628 trained cylinder body 628 can, for example, concentric to the outer cylinder wall 629 a cylindrical wall further inside 656 of a cylindrical body 657 , for example a so-called displacement body, which is also closed on the end face 657 , Have, with a simple design between the outer cylinder wall 629 and the wall 656 of the displacer 657 a flow channel designed as an annular gap 653 can be provided. In a further development, several axially running annular gap segments can be used as the flow channel 653 be provided by, for example, axially extending separating elements 669 , e.g. B. webs or ribs, between the inside of the cylinder wall 629 and the outside of the inner wall 656 are provided.

In a particularly advantageous embodiment of the as a hollow cylinder 628 trained cylinder body 628 , especially in the version with a wall located further inside 656 , are one or preferably several, on the inside of the outer cylinder wall 629 helical flow channels 653 intended. This can be formed by channels placed on the inside. In a preferred version with a wall located further inside 656 or displacement body 657 is this or these are by one or more spiral-shaped separating elements 669 , e.g. B. webs or ribs, formed between the inside of the cylinder wall 629 and the outside of the inner wall 656 are provided. In a preferred embodiment, it is helical on the inside of the cylinder wall 629 envisaged temperature control medium guide, ie with several flow channels running alongside each other in a helical shape around the cylinder axis 653 executed. For a multi-course arrangement of helical flow channels 653 these go, for example, spaced apart in the circumferential direction from an end distribution space 659 on one side of the cylinder and open on the other side of the cylinder into a return-side collection space 661 before the collected temperature control fluid flows back over the temperature control medium 652 is released to the outside again.

In execution of a z. B. as a solid cylinder 628 trained cylinder body 628 (see e.g. 26 , 27 ) This is, for example, at least in one between end caps 662 ; 663 lying area of the cylinder barrel 639 made in one piece. It points as flow channels 654 a plurality of bores spaced apart in the circumferential direction, radially spaced apart from the cylinder central axis and extending in the axial direction 654 which are preferably spaced from the central axis in the region close to the cylinder, ie more than half, in particular at least two thirds of the radius. In the version with supply and discharge on the same side there is an additional central hole 658 provided for fluid flow or return.

The end caps, if applicable 662 ; 663 can each in one piece with the relevant pin 559 be trained.

With temperature control inflow and outflow on the same side 651 ; 652 The temperature control fluid supplied is first of all distributed via the distribution space 659 via one or more flow channels 653 ; 654 in an area close to the cylinder jacket in the collecting room on the other side 661 performed and from there via a z. B. central management 658 , especially pipeline 658 , to the temperature control reflux 652 directed, or vice versa, first through the line 658 and back over the flow channel or channels 653 ; 654 in the area close to the cylinder jacket.

In an advantageous embodiment of the z. B. trained in one of the above designs and variants cylinder body 628 , is the cylinder body 628 - e.g. B. in a manner mentioned above - designed to be temperature-controlled and comprises, as an alternative or as additional means supporting the pulling up or taking off, one or more flow channels through which temperature control means can flow 653 ; 654 .

A temperature control device providing the temperature control means, e.g. B. a tempering agent template with integrated tempering agents, for. B. one Cooling device and / or a heating device is preferably designed to provide temperature control fluid with a fluid temperature that is below ambient temperature, in particular below 20 ° C., preferably below 17 ° C. In addition, the temperature control device is preferably also set up to provide temperature control fluid with a temperature above ambient temperature, in particular above 25 ° C., preferably 40 ° C. The temperature control device is advantageously set up to set a desired temperature for the temperature control fluid and / or to keep it constant via a control system.

To support pulling up or taking off a sleeve 637 now becomes the cylinder body 628 of the color engraving cylinder 512 initially cooled below ambient temperature, for example below 20 ° C., in particular below 17 ° C., preferably to a temperature of 15 ± 1 ° C.

The sleeve 637 has, for example, at 20 ° with the outer diameter of the cylinder body 628 in which the sleeve 637 receiving longitudinal section matching or advantageously slightly, for. B. by 10 to 70 microns, in particular 20 to 60 microns smaller clear inner diameter. That is, the sleeve 637 would be at a temperature of 20 ° C in the first case without and in the second, advantageous case with a preload on the cylinder surface 631 of the 20 ° C warm cylinder body 628 sit.

After cooling to e.g. B. below 17 ° C, preferably to a temperature of 15 ± 1 ° C, has the cooled cylinder body 628 for example the same outside diameter as the inside diameter of the z. B. 20 ° C warm sleeves 637 on or advantageously an undersize, e.g. B. from 1 to 40 microns, ie one compared to the inside diameter of the uncooled, for. B. 20 ° C warm, sleeves 637 at z. B. 1 to 40 microns smaller outer diameter. This allows the sleeve 637 - In particular in the case of an undersize in the outer diameter of the cylinder body 628 - easier on the cylinder body 628 put off.

This can be done in an advantageous development with additional support from one or more, e.g. B. outlined pressurized or pressurized outlet openings 641 ; 644 respectively.

After pushing on the sleeve 637 becomes the cylinder body 628 , for example by heat generated during operation and / or preferably medium flow with tempering fluid which is at a higher temperature than the ambient temperature, to a temperature of e.g. B. greater than 30 ° C, preferably warmed to 40 ± 3 ° C, which is caused by the heating of the cylinder body 628 its diameter enlarged and the sleeve 637 on its outer surface 631 tense. An oversize of the cylinder body resulting in operation at an operating temperature of, for example, 40 ± 3 ° C 638 opposite the overlying sleeve 637 and the accompanying prestressing of the sleeve 637 on the cylinder surface 631 is for example between 70 and 140 microns, preferably between 80 and 120 microns. This is a tight fit and an obstacle against twisting the sleeve 637 on the cylinder body 628 guaranteed.

It is particularly preferable to choose the materials for the cylinder body 628 at least in the area of its outer wall and for the sleeve 637 with associated expansion coefficients such that the cylinder body at least in the region of heating from, for example, 20 ° C. to 40 ° C. 628 a larger change in diameter in the area of its outer diameter than the sleeve 637 in its clear inner diameter.

Pulling on a sleeve 637 , if necessary with previous removal of a previously worn sleeve 637 , takes place, for example, in the same way as in connection with the outlet opening (s) 641 ; 644 trained means of support was set out, but with the difference that for pulling and removing the sleeves 637 the cylinder body 628 to, for example, below 20 ° C., in particular below 17 ° C., preferably to a temperature of 15 ± 1 ° C. Then the z. B. ambient temperature or at least 20 ° C sleeve 637 slipped on or a sleeve to be removed 637 subtracted from. After being pushed on, the cylinder body 628 through the environment, the heat generated during operation and / or heated by the temperature control device via the heated temperature control fluid, whereby the sleeve 637 on the lateral surface 631 is tensioned.

In a particularly advantageous development, the cylinder body 628 both tempered and includes on its outer surface 631 also at least one outlet opening which can be pressurized with compressed fluid, in particular compressed air 641 ; 644 .

Pulling on a sleeve 637 , if necessary with previous removal of a previously worn sleeve 637 is then carried out, for example, in the same way as described above in connection with the outlet opening (s) 641 ; 644 trained means of support was set out, but with the difference that previously the cylinder body 628 cooled to, for example, below 20 ° C, in particular below 17 ° C, preferably to a temperature of 15 ± 1 ° C.

Reference list

100

Substrate feed, sheet feeder

200

Conveyor line, first

201

Bow system

202

Funding

203

Transfer drum

300

Conveyor line, second

301

Transport device

400

Product intake, delivery, stack delivery

401

Stacking space

500

Printing unit, gravure printing unit

501

Printing cylinder, impression cylinder

502

Pressure point

503

Printing unit cylinders, form cylinders, intaglio printing cylinders, multi-color printing units

504

Printing form, gravure form, printing plate

505

-

506

Removal device, wiper device

507

Wiper cylinder

508

Inking unit

509

Printing part

510

-

511

Coloring device

512

Inking cylinder, color engraving cylinder, selective cylinder

513

Deepening, engraving ( 512 )

514

Deepening, engraving ( 504 )

515

-

516

Color space

517

Printing ink

518

Lateral surface ( 512 )

519

Inking cylinder, color relief cylinder, stencil cylinder

520

-

521

Lateral surface ( 519 )

522

Area, raised ( 521 )

523

Area, engraved ( 504 )

524

Survey

524 '

Elevation, merged

525

-

526

Restraint

527

transmission

528

transmission

529

Color unit, color train, selective

530

-

531

Inking cylinder, transfer cylinder, ink collecting cylinder

532

Color unit, color train, conventional

533

Frame, partial frame

534

Double arrow

535

-

536

Drive means, actuator, pressure medium operated, working cylinder, pneumatic cylinder

537

Side part, frame part, side plate

538

Frame, partial frame

539

Holding means, bracket

540

-

541

axis

542

Double arrow

543

Drive means, electric motor

544

Device for axial equalization, paint distribution device, paint mixing device

545

-

546

Paint distributor, distributor finger, paint mixer

547

Cross member, crossbar

548

Sledge

549

Guidance, linear guidance

550

-

551

Actuator

552

Axial drive, traversing drive

553

End, effective, mixing head ( 546 )

554

Restraint device holder, squeegee holder

555

-

556

Mounting bar

557

Cover strip

558

Side part, frame part, side plate

559

Cylinder pins, ends, pins ( 512 )

560

-

561

Ink collector

562

Collecting container, collecting pan

563

Guide device, guide plate

564

Barrier, drop barrier, bar

565

-

566

Edge, squeegee edge

567

Side part, side plate

568

Side, sealing side ( 567 )

569

Holding device

570

-

571

Color unit, color box

572

Acceptance device

573

Linear guide, dovetail guide

574

Swingarm

575

-

576

Guide, linear guide, parallelogram guide

577

Connection, ball joint head

578

Side panel

579

guide

580

-

581

Drive means, electric motor ( 544 )

582

Gearbox, traction mechanism gearbox ( 544 )

583

Eccentric disc

584

Recess

585

-

586

Extension, bracket

587

Gear, corner gear

588

Double arrow

589

Cross member, crossbar

590

-

591

Traction means, timing belt

592

Driving wheel, belt wheel

593

Stirring elements

594

Sensor device

595

-

596

Section ( 546 )

597

Sensor, strain gauge

598

rejuvenation

599

Filling piece

600

-

601

Actuator and / or conveyor, pump

602

Color reservoir, color tank

603

Line section

604

Temperature control device, heating device

605

-

606

Cleaning tape, paper web

607

Deflection element, guide wedge

608

Stock, roll

609

Recording, role

610

-

611

Deflection element, deflection roller

612

Deflection element, deflection roller

613

Frame ( 572 )

614

Holding and / or locking device

615

-

616

Drive motor

617

Sensor, proximity switch

618

Emergency stop switch element, emergency stop switch

619

Ink outlet

620

-

621

Frame construction

622

Line section

623

Restraint, other

624

Guide device, guide plate

625

-

626

Adjusting mechanism

627

Chamber squeegee

628

Cylinder body, solid cylinder, hollow cylinder, cylinder body

629

Cylinder wall

630

-

631

Cylinder surface, surface ( 628 )

632

Surface, lateral surface ( 633 )

633

Layer, active or top layer, coating

634

Layer structure

635

-

636

Intermediate layer, surface, adhesive surface, layer

637

Color transfer form, color transfer form sleeve, sleeve

638

Carrier layer

639

Cylinder bale

640

-

641

Exhaust opening, blowing opening

642

Axial section

643

Gutter

644

Exhaust opening, blowing opening

645

-

646

Supply line

647

Supply line

648

Entry point, coupling piece, valve coupling

649

Sling, paragraph

650

-

651

Tempering agent inflow, line section

652

Tempering medium reflux, line section

653

Flow channel

654

Flow channel

655

-

656

wall

657

Body, displacement body

658

Pipe, pipeline, bore

659

Distribution room

660

-

661

Gathering room

662

End cap

663

End cap

664

Body, rotationally symmetrical, sleeve, tubular sleeve

665

-

666

Body, rotationally symmetrical, sleeve, tubular sleeve

667

Space, pressure chamber

668

Space, pressure chamber

b512

width

b514

Width, line width

b513

Width, line width

b524

width

b639

width

d633

Thickness, layer thickness ( 633 )

d636

Layer thickness

d368

Layer thickness

D628

Cylinder body diameter

R512

Axis of rotation

D

Operating direction

S

Substrate, substrate sheet, substrate sheet, security sheet

S '

Substrate, simply printed

T

Direction of transport

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 2909033 B1 [0002]
• US 4604951 A [0003]
• WO 2005/077656 A1 [0004]
• CN 101544098 B [0005]
• DE 10304117 A1 [0006]

Claims (19)

Printing unit (500) for printing substrate (S) according to a gravure printing method, with a forme cylinder (503), which has an imaging pattern of depressions (514) on its circumference, and with an inking unit (508) for coloring the on the forme cylinder (503 ) provided pattern of depressions (514), comprising a first inking cylinder (512) which in the area of its lateral surface (518) comprises depressions (513) corresponding to depressions (514) on the forme cylinder (503), characterized in that the first inking cylinder (512) comprises a cylinder body (628) rotatably mounted or storable in the inking unit (508), on which a circumferentially closed ink transfer form sleeve (637) carrying the depressions (513) of the first inking unit cylinder (512) on its outward-facing surface (632) ) is detachably arranged or can be arranged. Printing unit after Claim 1 , characterized in that the ink transfer form sleeve (637) comprises a layer (633) which has the depressions (513) on its outwardly facing surface (632) and a carrier layer (638) which directly or indirectly supports this layer (633). Printing unit after Claim 2 characterized in that the layer (633) having the depressions (513) is formed by a ceramic layer (633), in particular a layer (633) made of oxide ceramic and / or a layer (633) made of chromium oxide. Printing unit after Claim 2 or 3rd , characterized in that the material forming the layer (633) has a Vickers hardness VH of at least 800 HV 10 and / or a porosity of at most 5% and / or a Young's elasticity of between 30 to 70 GPa and / or a transverse contraction number of 0 , 20 to 0.30 Poisson and / or a fracture toughness of 4.0 to 5.0 MPa * m ^1/2 and / or a tensile strength of at least 40 MPa. Printing unit after Claim 2 , 3rd or 4th , characterized in that the layer (633) has a thickness of at most 350 µm, in particular at most 200 µm. Printing unit after Claim 2 , 3rd , 4th or 5 , characterized in that the carrier layer (638) is formed by a carbon fiber material and / or the material forming the carrier layer (638) has a modulus of elasticity in the circumferential direction of less than 65 GPa, in particular less than 45 GPa and / or a layer thickness ( d638) of less than 5 mm, in particular less than 4 mm. Printing unit after Claim 2 , 3rd , 4th , 5 or 6 characterized in that the ink transfer form sleeve (637) between the layer (633) having the recesses (513) and the carrier layer (638) comprises a metallic intermediate layer (636), which is preferably formed by aluminum and / or a layer thickness (d636) from 0.10 to 0.35 mm. Printing unit after Claim 1 , 2nd , 3rd , 4th , 5 , 6 or 7 , characterized in that the cylinder body (628) in the region of its lateral surface (631) comprises one or more outlet openings (641) or groups of outlet openings (641), which at least in a period of time during the removal or mounting of an ink transfer form sleeve (637) Line system can be acted upon from the inside with a pressurized fluid under pressure. Printing unit after Claim 1 , 2nd , 3rd , 4th , 5 , 6 or 7 , characterized in that a cylinder body diameter (D628) of the cylinder body (628) can be enlarged, in particular reversibly expanded, by a mechanism which is effective, in particular, in the manner of a wedge gear, and can be reduced again at least in a period of time during the removal or mounting of an ink transfer form sleeve (637), is in particular traceable to the unloaded state. Printing unit after Claim 1 , 2nd , 3rd , 4th , 5 , 6 , 7 , 8th or 9 , characterized in that the color engraving cylinder (512) and / or the cylinder body (628) can be tempered, in particular designed to be flowed through by temperature control fluid and / or can be removed from the inking unit (508) for maintenance and / or arming purposes. Printing unit after Claim 1 , 2nd , 3rd , 4th , 5 , 6 , 7 , 8th , 9 or 10th , characterized in that the first inking cylinder (512) can be colored by a coloring device (511) in the area of an application point lying on its circumference and interacts downstream with a second inking cylinder (519). Printing unit after Claim 11 , characterized in that the inking device (511) on at least the in the direction of rotation (D) of the inking cylinder (512) comprising the recesses (513) downstream side of the application comprises a retention means (526), advantageously designed as a doctor blade or ink knife, through which viewed in the direction of rotation (D) behind the ink application and before the first nip point with the second inking cylinder (519), printing ink (517) previously applied to the lateral surface (518) of the first inking cylinder (512) can be removed. Printing unit after Claim 11 or 12th , characterized in that the second inking cylinder (519) in the area of its lateral surface (521) has elevations (524; 524 ') corresponding to individual depressions (514) on the forme cylinder (503) or raised areas (522), the depressions (514) corresponding areas (523) of the imaging pattern of depressions (514) on the forme cylinder (503) and / or that a third, with the second inking cylinder (519) cooperating via a second nip point, inking cylinder (531) is provided, which with the forme cylinder (503) forms a further nip point for coloring it. Printing unit after Claim 13 , characterized in that the printing unit (500) comprises a plurality of ink trains (529), each with an inking device (511), a first inking unit cylinder (512) having depressions (513) and a second inking unit cylinder (519), which are arranged over the respective second inking unit cylinder (519) with the third inking cylinder (531) cooperating on its circumference and / or that the first inking cylinder (512) of two ink trains (529) different patterns of depressions (513) and / or the second inking cylinder (519) of two Color trains (529) have mutually different patterns of elevations (524; 524 ') or raised areas (522). Printing machine with a printing unit (500) according to one of the Claims 1 to 14 , characterized by its design as a security printing machine and / or as a sheet-shaped substrate (S) processing printing machine and / or a gravure printing machine working according to the Intaglio method, comprising a substrate feed (100) through which the substrate (S) to be printed can be fed to the printing machine on the input side is, a first conveyor line (200) through which the substrate (S) can be fed to the at least one printing unit (500), a second conveyor line (300) through which the substrate (S ') directly or indirectly a product holder (400) can be supplied, through which the at least single-printed substrate (S ') can be combined into containers. Method for setting up an inking unit cylinder (512) encompassed by a printing unit (500), which in the area of its lateral surface (518) comprises a pattern of depressions (514) which form recesses (514) on a forme cylinder (503) of the printing unit (500 ) arranged or to be arranged printing form (504) correspond, characterized in that for setting up or renewing the lateral surface (514) having the recesses (514), a circumferentially closed surface (632) which surrounds the recesses (513) and faces outwards Ink transfer form sleeve (637) is arranged on a cylinder body (628) encompassed by the inking unit cylinder (512) and rotatably mounted or storable in the printing unit (500). Procedure according to Claim 16 , characterized in that the equipping of the cylinder body (628) is supported by an application of pressure medium which flows from one or more outlet openings (641; 644) opening into the lateral surface (518). Procedure according to Claim 16 or 17th , characterized in that the assembly of the cylinder body (628) takes place by cooling the cylinder body (628) to a temperature below the ambient temperature. Procedure according to Claim 16 , characterized in that the ink transfer form sleeve (637) is held on the cylinder body (628) by enlarging, in particular reversibly, enlarging, in particular reversibly, the cylinder body diameter (D628) and, in contrast, again for loading and / or changing the ink transfer form sleeve (637) is reduced.

Images