DE102016214253A1 - Positioning device for adjusting a position of at least one at least one printhead having assembly - Google Patents

Abstract

The invention relates to a positioning device for adjusting a position of a printhead having first assembly relative to a support body having a second assembly, wherein the positioning means for pivoting and moving each have a laterally displacing screw mechanism with guide element adjoining sensing element and wherein this respective guide element with the first modules is connected via a threaded connection, by which a thread axis is fixed, to which a thread direction is oriented in parallel and wherein this sensing element is in contact with the second assembly and wherein the respective guide member has a respective guide line, the same pitch as the at least one threaded connection and applies to the at least in a contact portion, that a radial distance between the respective guide line on the one hand and a reference point on the thread axis of others on the one hand decreases with displacement of the reference point in the thread direction, and wherein said sensing element is mounted on the first assembly movable relative to a base body of the first assembly.

Description

The invention relates to a positioning device for adjusting a position of at least one at least one print head having assembly and a printing unit.

In printing presses, different printing methods are used, for example rotary printing, offset printing, planographic printing, high-pressure, screen printing or gravure printing or non-impact printing methods. Non-impact printing processes (NIP = non-impact printing) are understood to mean printing processes which do not require a fixed, that is physically immutable, printing form. Such printing methods can produce different print images in each printing process. Examples of non-impact printing processes are ionographic processes, magnetographic processes, thermographic processes, and in particular inkjet printing processes or ink-jet printing processes. Such printing methods usually have at least one image-forming device, for example at least one print head. In the case of the inkjet printing method, such a printhead is designed, for example, as an inkjet printhead and has at least one and preferably several nozzles, by means of which specifically at least one printing fluid, for example in the form of ink drops, can be transferred to a printing material. The printing material should have as precise a position as possible relative to the image-forming device.

In ink-jet printing or ink-jet printing, individual drops of at least one printing fluid are ejected from nozzles of printing heads and transferred to a printing material in such a way that a print image results on the printing substrate. By individual control of a plurality of nozzles so different print images can be created. There is no fixed printing form and thus it is possible to design each individual print product individually. As a result, personalized printed products can be produced and / or small runs of printed products can be produced at low cost due to the saving of the printing forme.

An exact match of a print image on front and back of a double-sided substrate is called register ( DIN 16500-2 ). In multicolor printing one speaks of the passer ( DIN 16500-2 ), when individual print images of different colors are matched exactly to a picture. Also in the context of inkjet printing, appropriate measures must be taken to maintain register and / or register.

If a printing aggregate has more than one printhead, matching printhead settings are important to achieve high-quality printing results. For example, the printheads must be correctly aligned with respect to their relative position and driven at the right time. For some expensive procedures and / or devices are used.

For example, it is important that the printheads are arranged in a transverse direction to match each other. Furthermore, it is relevant that the print heads are aligned parallel to each other, in particular to ensure that distances of nozzles in the transverse direction are the same size and / or that drive times are set optimally. A change of activation times makes it possible to correct a misalignment of a print head in a direction parallel to a transport direction of a printing substrate. Also, a distance between the print head and substrate can be at least partially offset by appropriate Ansteuerzeitpunkte.

By the WO 2013 / 040455A1 a positioning device is known by means of a print head in and against at least one direction is movable.

By the EP 0 938 973 A2 , the WO 2014/012560 A1 and the US 2002/0024554 A1 In each case a positioning device is known in which by means of two eccentric an arrangement of a print head in a linear direction and with respect to a pivoting direction is made possible.

By the US 2009/0244124 A1 For example, a positioning device is known in which helically movable cones displace a body carrying a printhead and thereby change an arrangement of this printhead in a linear direction and with respect to a pivoting direction.

The invention has for its object to provide a positioning device for adjusting a position of at least one at least one print head having assembly and a printing unit.

The object is achieved by the features of claim 1 and the features of claim 12.

Advantages result from a positioning device for adjusting a position of at least one at least one printhead having first assembly relative to at least one at least one support body having second assembly in a printing unit, the positioning at least one pivot mechanism and at least one translation mechanism and wherein the pivoting mechanism as is formed laterally displacing screw mechanism and / or the translation mechanism is designed as a sideways displacing screw mechanism and wherein the respective laterally displacing screw mechanism has at least one respective guide element and at least one fitting on the respective guide element respective sensing element and wherein this at least one respective guide element with one of the two modules , in particular the first assembly, is connected via at least one respective threaded connection, by which a respective thread axis is fixed, to which a respective thread direction is oriented in parallel, and this at least one respective sensing element with the other of the two assemblies, in particular the second assembly, in Contact is and / or is connected and wherein the at least one respective guide element has at least one respective guide line having a same respective slope as the has at least one respective threaded connection and applies to the at least in a respective contact portion that a radial distance between the respective guide line on the one hand and a reference point on the respective thread axis on the other hand decreases with displacement of the reference point in the respective thread direction and this at least one respective sensing element on the first assembly relative to a respective adjustment direction relative to at least one base body, which is part of the first assembly, in particular mounted linearly movable.

One of the advantages is in particular that a high precision of the settings can be achieved by a large transmission ratio. Another advantage is a self-locking of the positioning device to prevent unwanted changes in settings. By using a guide element formed in this way, a particularly simple mounting of the guide element is possible, for example exclusively in a threaded connection which is anyway necessary for the adjustment. Another advantage is that, for a relatively small movement of the sensing element, there is a large relative movement between the sensing element and the guiding element along the guiding line. This ensures that even with small movements stiction and / or mechanical hysteresis cause no problems. Furthermore, pivoting mechanism and translation mechanism can be operated independently of one another to a great extent, in particular because a part of the respective scanning element facing away from the respective guide element can slide along a correspondingly shaped, for example, flat counterface. In particular, a largely closed mechanism can be realized, which can be removed and installed particularly easily together with the first module, for example, even if the corresponding mechanism itself is to be maintained. As a result, during installation and / or removal, damage, in particular of the guide element, which could otherwise pose a danger to the precise alignment of the print heads, can be avoided. The possibility of the largely closed mechanism also makes it possible to reduce or prevent soiling of the essential components of the respective mechanism. In each case, only the ends of the sensing elements are required as contact with the non-movable components or the second assembly, which further preferably can be moved linearly relative to the first assembly in order to variably support them against the second assembly.

Preferably, the positioning device is characterized in that the pivot mechanism is designed as a first sideways displacing screw mechanism and the translation mechanism is designed as a second sideways displacing screw mechanism. Dan apply the advantages mentioned for both adjustment mechanisms.

Preferably, the positioning device is characterized alternatively or additionally by the fact that the at least one respective guide element has the shape of a respective truncated cone, at least in the respective contact section. This is a particularly easy to manufacture form and provides constant conditions over a large or the entire adjustment range. The respective truncated cone preferably has a respective opening angle which is at least 1 ° and / or at most 45 °, more preferably at most 20 °. The respective contact section preferably extends over at least 0.1 mm with respect to the respective thread direction. This allows a large adjustment range despite the large gear ratio.

Preferably, the positioning device is characterized alternatively or additionally by the fact that the at least one respective guide element is connected via a respective drive train with a respective adjusting wheel and / or a respective drive motor. This allows adjustment of the positioning device from a more remote point and / or automated.

Preferably, the positioning device is alternatively or additionally characterized in that along the respective drive train at least one respective universal joint and / or at least one respective length compensation element and / or at least one respective transmission is arranged. Universal joints and / or length compensation elements allow complex installation situations and relative mobility between drives on the one hand and side-displacing screw mechanisms on the other.

Preferably, the positioning device is alternatively or additionally characterized in that the first assembly has at least two printheads, which are arranged together by means of the positioning and mutually immovable with respect to their relative position relative to the at least one second assembly and that the first assembly at least one alignment device has, by means of which the at least two print heads of the first assembly are aligned relative to each other. As a result, drive means and installation space can be saved.

Preferably, the positioning device is alternatively or additionally characterized in that at least one of the laterally displacing screw mechanisms at least one respective force element is assigned, which is arranged to act on the respective sensing element with a force acting on the respective sensing element. This ensures mobility in both directions.

Preferably, the positioning is characterized alternatively or additionally by the fact that the first thread direction is oriented with an optional deviation of at most 10 ° parallel to the second thread direction and / or that the first thread direction with an optional deviation of at most 10 ° parallel to a Ejection direction of nozzles is oriented at least one of the positioning held printhead and / or that the second thread direction is oriented with an optional deviation of at most 10 ° parallel to the ejection direction of nozzles of at least one held by the positioning printhead. As a result, an advantageous alignment and space-saving arrangement is ensured.

Preferably, the positioning device is alternatively or additionally characterized in that in addition to the pivot mechanism and / or to the translation mechanism preferably still a suspension mechanism is arranged, which has at least one elongated hole through which a total of at least two eccentric pins are arranged projecting. As a result, it is also possible to make and save settings relating to further degrees of freedom.

Preferably, a printing unit having the positioning device is alternatively or additionally characterized in that the second assembly having at least one support body is arranged to be movable relative to a frame of the printing unit and / or relative to a rotation axis of a central cylinder of the printing unit and / or that the second assembly is a common second assembly and a plurality of first assemblies is arranged to support and these plurality of first modules via their own positioning in their respective position relative to this second assembly are adjustable. This facilitates, for example, a mounting and / or maintenance of the printheads.

Preferably, the positioning device is alternatively or additionally characterized in that it is at least one respective scanning element and at least one base body, which is part of the first assembly, arranged relative to each other with respect to a respective adjustment direction movable and / or that this at least one respective sensing independent of the Relative position of the first assembly is arranged to the at least one support body held in a same relative position to the at least one support body. As a result, pivoting mechanism and translation mechanism can be operated independently of one another to a great extent, in particular because a part of the respective scanning element facing away from the respective guide element can slide along a correspondingly shaped, for example, flat counterface.

The at least one printing unit preferably has at least one nozzle bar and more preferably a plurality of nozzle bars. The printing unit preferably has the at least one first print head, which is preferably designed as an inkjet print head. Preferably, the at least one nozzle bar in each case has at least one print head and preferably in each case a plurality of print heads. Each printhead preferably has a plurality of nozzles from which coating agent drops, in particular ink drops, are ejected and / or ejected. A nozzle bar is a component which preferably extends over at least 80% and more preferably at least 100% of a working width of the printing machine and which serves as a carrier of the at least one print head. The at least one first nozzle bar preferably extends orthogonally to the intended transport path of the printing material over the working width of the printing press.

The term of a pressurized fluid in the foregoing and hereinafter ink and printing inks, but also paints and pasty materials are summarized. Preference is given to printing fluids which are transferred to a printing material by a printing machine or at least one printing unit of the printing press and preferably in a finely structured form and / or not only over a large area a preferably visible and / or perceptible by sensory impressions and / or establish machine-detectable texture on the substrate. Inks and printing inks are preferably solutions or dispersions of at least one colorant in at least a solvent. Suitable solvents include, for example, water and / or organic solvents. Alternatively or additionally, the pressure fluid may be formed as under UV light crosslinking pressure fluid. Inks are relatively low viscosity printing fluids and inks are relatively high viscosity printing fluids. Inks preferably have no binder or relatively little binder, while printing inks preferably contain a relatively large amount of binder and more preferably further auxiliaries. Colorants may be pigments and / or dyes, pigments being insoluble in the application medium, while dyes are soluble in the application medium. In particular, inks containing dyes as colorants preferably have no binder.

For the sake of simplicity, the term "printing ink" in the sense of a liquid or at least free-flowing dyeing fluid to be printed in the printing press should be understood in the preceding and following - which does not only refer to the colloquial rather with the expression "Ink" brought in conjunction higher-viscosity dyeing fluid for use in rotary printing machines, but in addition to these higher viscosity dyeing fluids in particular also low-viscosity dyeing fluids such as "inks", especially inkjet inks, but also powdered dyeing fluids such. As toner includes. Thus, in the foregoing and hereinafter especially colorless paints are meant when talking of printing fluids and / or inks and / or printing inks. In the preceding and in the following, in particular, means for a pretreatment (so-called precoating) and / or a subsequent treatment (so-called post-treatment or post-coating) of the printing material are preferably meant, if printing fluids and / or inks and / or printing inks are mentioned. As an alternative to the term pressurized fluid, the term coating agent is to be understood as synonymous.

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

Show it:

1a a schematic representation of a roll printing machine;

1b a schematic representation of a roll printing machine with alternative web guide;

2a a schematic representation of a portion of a printing unit with a double row of printheads;

2 B a schematic representation of at least one nozzle bar having a plurality of double rows of positions provided for printing heads;

2c a schematic representation of at least one nozzle beam with a plurality of rows of obliquely overlapping printheads;

3 a schematic representation of several print heads with positioning and support body;

4 a schematic representation of a test printed image;

5a a schematic representation of an embodiment of a positioning of a print head in a plan view;

5b a schematic representation of the positioning of 5a in a view parallel to a transport direction;

6a a schematic representation of another embodiment of a positioning of a print head in a plan view;

6b a schematic representation of the positioning of 6a in a view parallel to a transport direction;

6c a schematic representation of a view of the positioning according to 6b ,

Under a printing press 01 Here is one at least a pressurized fluid on a substrate 02 to understand the application or machine capable of being applied. The printing press 01 has, for example, at least one printing material source 100 , at least a first printing unit 200 , preferably at least a first dryer 301 , preferably at least a second printing unit 400 and preferably at least a second dryer 331 and preferably at least one post-processing device 500 on. The at least one first printing unit 200 is preferred as at least a first non-impact printing unit 200 , in particular inkjet printing unit 200 educated. The printing press 01 is also preferred as an inkjet printing machine 01 educated. The printing press is preferred 01 as a roll printing machine 01 formed, more preferably as a roller inkjet printing machine 01 , The printing press 01 is for example as a rotary printing machine 01 designed, for example as a rotary web press 01 , in particular roll-rotary ink-jet printing machine 01 , In the case of a roll printing press 01 is the source of printing material 100 for example as Rollenabspulvorrichtung 100 , especially reel changers 100 educated. In the case of a sheet-fed press or Sheet-fed rotary printing press is the source of printing material 100 For example, designed as a sheet feeder. In the substrate source 100 At least one printing material is preferred 02 aligned, preferably with respect to at least one edge of this printing substrate 02 , The substrate 02 is for example at least one web-shaped substrate 02 So a printing material web 02 For example, a paper web 02 or a textile web 02 or a slide 02 , For example, a plastic film 02 or a metal foil 02 ,

A transverse direction A or axial direction A is preferably a direction A which is parallel to a rotation axis 111 a substrate roll 101 and / or to a rotation axis 207 at least one central cylinder 201 ; 401 and / or to an axis of rotation of one in the first printing aggregate 200 arranged Bedruckstoffleitelements extending. A particular provided transport of the at least one printing substrate 02 and in particular the printing material web 02 runs after the at least one printing material source 100 preferably by the at least one first printing unit 200 where the substrate 02 and in particular the printing material web 02 preferably by means of at least one coating agent or printing fluid, in particular at least one ink and / or printing ink at least on one side and preferably in connection with the at least one second printing aggregate 400 is preferably provided on two sides with at least one printed image. The transverse direction A is preferably a direction that is horizontally oriented. The transverse direction A is preferably orthogonal to each transport direction T of the material web 02 oriented. A transport direction T is, for example, the direction in which the printing material 02 transported or intended for its transport. In the case of a curved transport path, the transport direction T is preferably in each case that direction which runs tangentially to a section and / or point of the intended transport path which are closest to a respective reference point. This respective reference point is preferably located at the point and / or on the component that is related to the transport direction T.

After passing the at least one first printing unit 200 the transport path of the printing material passes through 02 and in particular the printing material web 02 for example, the at least one first dryer 301 to dry the applied ink and / or ink. Ink and / or printing ink is to be understood in the preceding and hereinafter generally a coating composition, in particular also a lacquer. Preferably, the at least one first dryer 301 Part of a dryer unit 300 , The at least one post-processing device 500 is for example as at least one folding device 500 and / or as a take-up device 500 and / or as a bow trimmer 500 and / or as at least one planned expense 500 educated. In the at least one folding device 500 is the preferred two-sided printed substrate 02 preferably further processed to individual printed products.

The following is a roll printing machine 01 described in more detail. However, the same details can be applied to other printing presses as well 01 , for example, sheet-fed presses, provided they do not conflict. The substrate 02 preferably has a width, ie an extension in the transverse direction A of 700 mm to 3000 mm, but may also have an arbitrarily smaller or preferably larger width.

A working width of the printing press 01 is a dimension which is preferably orthogonal to the intended transport path of the printing substrate 02 by the at least one first printing unit 200 extends, more preferably in the transverse direction A. The working width of the printing press 01 preferably corresponds to a maximum width, which is a substrate 02 may have to still with the printing press 01 to be processed, so a maximum with the printing press 01 processable substrate width.

The at least one first printing unit 200 is preferably the Rollenabspulvorrichtung 100 with respect to the transport path of the printing material 02 downstream. The at least one first printing unit 200 has, for example, at least a first central pressure cylinder 201 or shortly central cylinder 201 on. If below from a central cylinder 201 the speech is, so is always a pressure cylinder 201 meant. The printing material web 02 preferably wraps around the first central cylinder in a printing operation 201 at least partially. In this case, a wrap angle is preferably at least 180 ° and more preferably at least 270 °. The wrap angle is the angle measured in the circumferential direction of a cylinder jacket surface of the first central cylinder 201 along which the substrate 02 and in particular the printing material web 02 with the first central cylinder 201 in contact. The printing material web 02 For example, it wraps around a part of a first roll 203 , in particular deflection roller 203 and is deflected by this so that the transport path of the printing substrate 02 in a first space 204 both tangential to the first guide roller 203 as well as tangent to the first central cylinder 201 runs.

For example, at least one, as the first impression 206 trained first cylinder 206 in the at least one first printing unit 200 arranged. In one to the first central cylinder 201 Employed state forms the first impression roller 206 preferably together with the first central cylinder 201 a first impression gap 209 , Through the first guide roller 203 and / or preferably by the first impression roller 206 becomes the printing material web 02 preferably flat and more preferably in a unique and known position to the first central cylinder 201 created.

The first printing unit 200 preferably has its own, the first central cylinder 201 associated first drive motor 208 on, preferably as an electric motor 208 , in particular synchronous motor 208 is formed and further preferred as a direct drive 208 and / or single drive 208 of the first central cylinder 201 is trained. Under a direct drive 208 is a drive motor 208 to understand that without interposing further with the substrate 02 in contact rotating body with the at least one first central cylinder 201 is in torque transmitting and / or transferable connection. Under a single drive 208 is a drive motor 208 to understand that as a drive motor 208 excluding the at least one first central cylinder 201 is trained.

On the first drive motor 208 of the first central cylinder 201 and / or on the first central cylinder 201 itself, a first rotational angle sensor is preferably arranged, which has a rotational angle position of the first drive motor 208 and / or the first central cylinder 201 itself measuring and / or measuring and sending to a higher-level machine control and / or is designed to transmit. The first rotation angle sensor is designed, for example, as a rotary encoder or absolute value encoder. With such a rotation angle sensor is a rotational position of the first drive motor 208 and / or preferably a rotational position of the first central cylinder 201 preferably by means of the higher-level machine control absolutely determinable.

Additionally or alternatively, the first drive motor 208 of the first central cylinder 201 For example, in terms of circuit technology connected to the machine control such that the machine control is based on the machine control of the first drive motor 208 of the first central cylinder 201 predetermined target data to a rotational position of the first drive motor 208 at any time via the rotational position of the first drive motor 208 and thus at the same time the rotational position of the first central cylinder 201 is informed. In particular, one preferred is the rotational angle position or rotational position of the first central cylinder 201 and / or the first drive motor 201 predefined area of the machine control directly with at least one print head 212 of the first printing unit 200 controlling area of the machine control connected.

Within the first printing unit 200 is at least a first printing unit 211 arranged. The at least one first printing unit 211 in particular provides a first pressure point 211 dar. The at least a first printing unit 211 is preferred as a first ink jet printing unit 211 educated. Under a pressure point 211 In this case, a preferred complete range is to be understood in the contact between a respective same pressure fluid and a printing material 02 is manufactured or can be produced. The term the pressure point 211 should also be used when the pressure fluid without pressure between substrate 02 on the one hand and a component transferring the pressure fluid, on the other hand, onto the printing material 02 is applied, for example, by impinging freely movable pressure fluid on the substrate 02 , For example, flying drops of the pressurized fluid. Preferably comprises a pressure point 211 all areas responsible for an impact of a particular, in particular this pressure point 211 associated pressure fluid on the substrate 02 are provided. In the case of a printing unit operating according to the ink-jet printing method 200 includes, for example, a pressure point 211 all areas that impact a black ink on a first page of the substrate 02 are provided.

The at least one first printing unit 211 is preferred in the direction of rotation of the first central cylinder 201 and thus along the transport path of the printing material web 02 after the first impression 206 preferably on the at least one first central cylinder 201 acting and / or arranged and / or aligned and / or arranged alignable. The at least one first printing unit 211 will also be the first inkjet printer 211 called. The at least one first printing unit 211 preferably has at least one nozzle bar 213 and more preferably a plurality of nozzle bars 213 on. The at least one first printing unit 211 and thus the at least one first printing unit 200 preferably has the at least one first printhead 212 ; 412 preferred as an ink jet printhead 212 ; 412 is trained. Preferably, the at least one nozzle bar 213 in each case at least one print head 212 ; 412 and preferably each multiple printheads 212 ; 412 on. Every printhead 212 ; 412 preferably has a plurality of nozzles from which coating agent drops, in particular ink drops are ejected and / or ejected. A nozzle bar 213 is a component that preferably over at least 80% and more preferably at least 100% of the working width of the printing press 01 extends and that as a carrier of the at least one print head 212 ; 412 serves. An axial length of the bale of the at least one first central cylinder is preferred 201 at least as big as the working width of the printing machine 01 , There is a single or several nozzle bars 213 ever printing unit 211 arranged. Each nozzle is preferably a clearly defined target area in the direction A of the width of the printing material web 02 and preferably to the direction A, in particular the axis of rotation 207 the at least one first central cylinder 201 related assigned. Each target area of a nozzle is preferably in particular with respect to the circumferential direction of the at least one first central cylinder 201 clearly defined at least in the printing operation. In particular, a target area of a nozzle is that, in particular, substantially rectilinear space area which extends in a direction of ejection of this nozzle from this nozzle.

The at least one first nozzle bar 213 preferably extends orthogonal to the intended transport path of the printing material 02 over the working width of the printing press 01 , The at least one nozzle bar 213 preferably has at least one row of nozzles. The at least one row of nozzles, viewed in the transverse direction A, preferably has the entire working width of the printing press 01 and / or width of the bale of the at least one first central cylinder 201 For example, at regular intervals nozzle openings. A surface surrounding the nozzle openings 214 ; 414 of the printhead 212 ; 412 is preferred nozzle area 214 ; 414 called. The ejection direction of one or preferably each nozzle of a printhead 212 ; 412 is preferably at least substantially and more preferably completely parallel to a surface normal of the nozzle surface 212 ; 412 of the respective printhead 212 ; 412 , Preference is given in the transverse direction A side by side several print heads 212 ; 412 on the at least one nozzle bar 213 arranged, the nozzle surfaces, for example, the shape of a rectangle, but more preferably have the shape of a trapezoid and / or a parallelogram. Since usually such individual printheads 212 ; 412 need not be provided with nozzles to one edge of their housing, printheads need 212 ; 412 be arranged overlapping with respect to the transverse direction A. The at least one row of nozzles is preferably not formed as a single linear juxtaposition of nozzles, but results as the sum of a plurality of individual, more preferably two, circumferentially offset from each other arranged juxtaposition of nozzles. For this purpose, different embodiments are possible.

In a first embodiment, for example, at least two and more preferably exactly two rows of printheads extending in the transverse direction A are provided 212 ; 412 in the circumferential direction of the first central cylinder 201 arranged offset to one another, preferably so that in the transverse direction A successive printheads 212 ; 412 preferably alternately one of the at least two rows of printheads 212 ; 412 always preferentially alternately a first and a second of two rows of printheads 212 ; 412 , Two such rows of printheads 212 ; 412 form a double row of printheads 212 ; 412 , Each double row of printheads 212 ; 412 For example, there are between five and twenty-five printheads 212 ; 412 and more preferably seven or fourteen printheads 212 ; 412 on.

In a second embodiment, the print heads 212 ; 412 adapted to each other housing forms. For example, has a respective nozzle surface 214 ; 414 each printhead 212 ; 412 and / or at least one respective the printhead 212 ; 412 in its ejection direction limiting surface of the print head 212 ; 412 a shape deviating from a rectangular shape, in particular the shape of a preferably symmetrical trapezoid and / or a parallelogram. This allows the nozzle surfaces 214 ; 414 from neighboring printheads 212 ; 412 overlap with respect to the transverse direction A and the printheads 212 ; 412 nevertheless be arranged directly adjacent to one another in the transverse direction A, in particular without being offset relative to one another in the transport direction T. Such a series of printheads 212 ; 412 becomes, for example, an obliquely overlapping row of printheads 212 ; 412 called. In this second embodiment, multiple printheads 212 ; 412 arranged in a row extending in the transverse direction A side by side and together have at least one row of nozzles, which extend over the entire working width of the printing press 01 extends, wherein relative to the transverse direction A adjacent nozzles of this at least one row have a relation exclusively to the transverse direction A distance of not more than 1 mm from each other, in particular regardless of whether they are one or two adjacent printheads 212 ; 412 belong. Under an obliquely overlapping row of print heads 212 ; 412 should also such printheads 212 ; 412 be understood that no straight line limit to their neighboring printheads 212 ; 412 but, for example, curved and / or stepped boundaries.

Indicates a printhead 212 ; 412 multiple nozzles, so form all target areas of the nozzles of this printhead 212 ; 412 together a workspace of this printhead 212 ; 412 , Workspaces of Printheads 212 ; 412 a nozzle bar 213 and in particular a double row of printheads 212 ; 412 or an obliquely overlapping series of printheads 212 ; 412 When viewed in the transverse direction A, they adjoin one another and / or overlap in the transverse direction A. In this way, even when not in the transverse direction A printhead 212 ; 412 ensures that in the transverse direction A at regular and preferably periodic distances target areas of Nozzles of the at least one nozzle bar 213 and / or in particular each double row of printheads 212 ; 412 and / or each obliquely overlapping series of printheads 212 ; 412 lie. In any case, an entire working area of the at least one nozzle bar extends 213 preferably over at least 90% and more preferably 100% of the working width of the printing machine 01 and / or the entire width of the bale of the at least one first central cylinder 201 in the transverse direction A. On one or both sides with respect to the transverse direction A, a narrow region of the printing material web 02 and / or the bale of the first central cylinder 201 be present, which is not the working area of the nozzle bars 213 belongs. An entire working area of the at least one nozzle bar 213 is preferred from all workspaces of printheads 212 ; 412 this at least one nozzle bar 213 composed and is preferably from all target areas of nozzles of these printheads 212 ; 412 this at least one nozzle bar 213 composed. Preferably corresponds in the case of a double row of printheads 212 ; 412 an entire workspace of this dual row of printheads 212 ; 412 seen in the transverse direction A the working area of the at least one nozzle bar 213 , Preferably, in the case of an obliquely overlapping row of printheads 212 ; 412 an entire work area of this obliquely overlapping row of printheads 212 ; 412 seen in the transverse direction A the working area of the at least one nozzle bar 213 ,

Preferably, the at least one nozzle bar 213 in the circumferential direction with respect to the at least one first central cylinder 201 and / or in the transport direction T and / or orthogonal to the transverse direction A a plurality of rows of nozzles. Preferably, each printhead 212 ; 412 a plurality of nozzles, more preferably in a matrix of a plurality of rows in the transverse direction A and / or a plurality of columns, preferably in the circumferential direction of the at least one first central cylinder 201 are arranged. Such columns are further preferably arranged running obliquely to the circumferential direction, for example, to increase a resolution of a printed image. Thus, in each case one row of nozzles and one column of nozzles preferably enclose an angle other than 90 °. It is also possible to arrange the lines at an angle to the transverse direction A. Preferred are in a direction orthogonal to the transverse direction A, in particular in the transport direction T along the intended transport path of the printing substrate 02 and / or in the circumferential direction relative to the at least one central cylinder 201 several rows of printheads 212 ; 412 arranged successively, for example, four double rows and preferably eight double rows of printheads 212 ; 412 , Alternatively, at least four obliquely overlapping rows of print heads are preferred 212 ; 412 and more preferably at least eight obliquely overlapping rows of printheads 212 ; 412 in the direction orthogonal to the transverse direction A, in particular in the transport direction T along the intended transport path of the printing substrate 02 and / or in the circumferential direction relative to the at least one central cylinder 201 arranged one after the other.

In particular, at least in the printing operation in the circumferential direction with respect to the at least one first central cylinder 201 several rows of printheads 212 ; 412 , preferably four double rows and more preferably eight double rows of printheads 212 ; 412 or preferably four rows of obliquely overlapping printheads 212 ; 412 and more preferably eight rows of obliquely overlapping printheads 212 ; 412 successively on the at least one first central cylinder 201 arranged aligned.

Here are the printheads 212 ; 412 at least in the printing operation, preferably oriented such that the nozzles of each printhead 212 ; 412 essentially in the radial direction on the cylinder jacket surface of the at least one first central cylinder 201 point. Deviations from radial directions within a tolerance range of preferably not more than 10 ° and more preferably not more than 5 ° are to be considered essentially radial directions. This means that the at least one on the lateral surface of the at least one first central cylinder 201 aligned printhead 212 ; 412 with respect to the axis of rotation 207 the at least one first central cylinder 201 in a radial direction on the lateral surface of the at least one first central cylinder 201 is aligned. This radial direction is one on the axis of rotation 207 the at least one first central cylinder 201 related radial direction.

Each double row of printheads 212 ; 412 or obliquely overlapping row of printheads 212 ; 412 is preferably a coating agent, in particular a printing ink of a particular color assigned and / or assignable, for example, each one of the colors black, cyan, yellow and magenta or a paint, for example a clearcoat. The corresponding inkjet printing unit 211 is preferred as a multi-color printing unit 211 , in particular four-color printing unit 211 designed and allows a one-sided multicolor, especially four-color printing of the printing substrate 02 , It is also possible to have fewer or more different colors with a printing unit 211 to print, for example, additional spot colors. In one embodiment, at least in the printing operation several, in particular at least four or at least eight rows of printheads 212 ; 412 , more preferably four double rows and even further prefers eight double rows of printheads 212 ; 412 or preferably four obliquely overlapping rows of printheads 212 ; 412 and more preferably eight obliquely overlapping rows of printheads 212 ; 412 arranged in succession on at least one surface of at least one transfer body, for example at least one transfer cylinder and / or at least one transfer belt aligned.

The at least one print head 212 ; 412 works for the production of coating agent drops preferably according to the drop-on-demand process in which coating agent drops are generated selectively if necessary. Preferably, at least one piezo element is used per nozzle, which can reduce a volume filled with coating agent at high speed by a certain amount when a voltage and / or change of an applied voltage. As a result, coating agent is displaced, which is ejected through a nozzle connected to the volume filled with coating agent and forms at least one coating agent drop. By applying different voltages to the piezoelectric element is on the travel of the piezoelectric element and thus the reduction of the volume and thus the size of the coating agent drops influence. In this way, color gradations in the resulting print image can be realized, for example without necessarily changing a number of drops contributing to the print image (amplitude modulation). Alternatively, at least one heating element is arranged per nozzle. The at least one heating element generates a gas bubble in a volume filled with coating agent at high speed by evaporation of coating agent. The additional volume of the gas bubble displaces coating agent, which in turn is ejected through the respective nozzle and forms at least one coating agent drop. Variable heating enables variable drop sizes.

In the drop-on-demand process, it is possible to have a target position of the respective coating agent drop on the moving printing material web 02 with respect to the circumferential direction of the at least one first central cylinder 201 solely by an emission time point of the respective coating agent drop and a rotational speed of the first central cylinder 201 and / or by the rotational position of the first central cylinder 201 set. By individual control of each nozzle, coating agent drops from the at least one print head are only at selected times and at selected locations 212 ; 412 on the substrate web 02 transfer. This happens as a function of the rotational speed and / or the rotational angle position of the at least one first central cylinder 201 , a distance between the respective nozzle and the printing material web 02 and the location of the target area of the respective nozzle with respect to the circumferential angle. This results in a desired printed image, which is designed as a function of the control of all nozzles. Alternatively to the rotational angle position and the rotational speed of the first central cylinder 201 can for example also on a transport speed of the printing material 02 be resorted to.

By orientation of the printing material web 02 for example by means of a Bahnkantenausrichters and optionally through the first impression roller 206 of the first printing unit 200 and by the large wrap angle of the printing material web 02 around the at least one first central cylinder 201 and optionally by other devices such as drivers ensures that the substrate web 02 without slippage in a precisely defined position on the cylinder jacket surface of the at least one first central cylinder 201 is arranged and also remains until a selective detachment at the end of the range of the wrap angle. Through the contact of the printing material web 02 with the cylinder jacket surface of the at least one first central cylinder 201 In addition, swelling of the printing material web 02 at least in the transport direction T of the printing material web 02 and at least for the duration of a contact of a respective area of the substrate web 02 with the cylinder jacket surface of the at least one first central cylinder 201 even after contact with drops of ink prevented or at least sufficiently reduced. This will ensure that ink drops from different printheads 211 on a uniformly defined printing substrate 02 be applied. An exact and constant position of the printing material web 02 relative to the at least one first central cylinder 201 is of great importance for a passport-compatible and / or register-compatible printed image, in particular if the control of the at least one nozzle as described above with the rotational position of the first central cylinder 201 is linked.

The nozzles of the at least one printhead 212 ; 412 are arranged such that a distance between the nozzles and on the cylinder jacket surface of the at least one first central cylinder 201 arranged printing material web 02 at least when arranged in a printing position printhead 212 ; 412 preferably between 0.5 mm and 5 mm and more preferably between 1 mm and 1.5 mm. The high angular resolution and / or the high sampling frequency of the rotation angle sensor and / or the high accuracy of the predetermined by the machine control and the first drive motor 208 of the first central cylinder 201 processed target data to the rotational position of the first drive motor 208 of the first central cylinder 201 allows a very accurate orientation and / or knowledge of the position of the printing material web 02 relative to the nozzles and their target areas. A drop flight time between the nozzles and the printing material web 02 is for example by a teach-in process and / or by the known distance between the nozzles and the printing material web 02 and a known drop speed known. From the angular position of the at least one first central cylinder 201 and / or the first drive 208 the at least one first central cylinder 201 , the rotational speed of the at least one first central cylinder 201 and the drop flight time is determined an ideal time to eject a respective drop, so that a passer-sized and / or register-compliant imaging of the substrate web 02 is reached.

In particular, it is relevant for the drop flight time how large the distance between nozzle and printing material 02 is. At a constant diameter of the central cylinder 201 and when a position of the respective nozzles is constant with respect to a radial direction, the distance between the nozzle and the relevant surface of the substrate is dependent 02 of a thickness of the printing material 02 from. The radial direction is on the axis of rotation 211 of the first central cylinder 201 based. The thickness of the substrate 02 is in particular a smallest dimension of the printing material 02 , in particular between two substantially mutually parallel surfaces of the printing substrate 02 ,

Preferably, at least one sensor designed as a first print image sensor is arranged, more preferably at one point along the transport path of the printing material web 02 after the first printing unit 211 , The at least one first print image sensor is designed, for example, as a first line scan camera or as a first area scan camera. The at least one first print image sensor is designed, for example, as at least one CCD sensor and / or as at least one CMOS sensor. By means of this at least one first image sensor and a corresponding evaluation unit, for example, the higher-level machine control, it is preferable to control all in the circumferential direction of the at least one first central cylinder 201 one behind the other and / or acting printheads 212 ; 412 and / or double rows of printheads 212 ; 412 and / or obliquely overlapping rows of printheads 212 ; 412 of the first printing unit 211 monitored and / or regulated. In a first embodiment of the at least one print image sensor, only a first print image sensor is arranged, whose sensor field covers the entire width of the transport path of the printing material web 02 includes. In a second embodiment of the at least one print image sensor, only a first print image sensor is arranged which is orthogonal in the direction A to the direction of the transport path of the printing material web 02 is designed to be movable. In a third embodiment of the at least one print image sensor, a plurality of print image sensors are arranged, whose respective sensor fields each comprise different regions of the transport path of the printing material web 02 include. Preferably, these areas in the direction A are orthogonal to the direction of the transport path of the printing material web 02 arranged offset from one another. Preferably, an entirety of the sensor fields of the plurality of print image sensors comprises a total width of the transport path of the printing material web 02 ,

A layer of pixels formed by coating agent drops emerging from a respective first printhead 212 ; 412 are preferably compared with a layer of pixels formed by coating agent drops, each from a second, in the circumferential direction of the at least one first central cylinder 201 and / or in the intended transport direction T of the printing substrate 02 after the first printhead 212 ; 412 arranged and / or in the transverse direction A to the printhead 212 ; 412 arranged lying printhead 212 ; 412 come. This is preferably done independently of whether these each first and second, in the circumferential direction of the at least one first central cylinder 201 one behind the other and / or acting printheads 212 ; 412 process a same or a different coating agent. It is preferred to match the layers of different printheads 212 ; 412 monitored printed images. In the case of the same coating agents, register-based joining of partial images is monitored. With different coating agents, a register or color register is monitored. A quality control of the printed image is preferably also carried out with the measured values of the at least one printed image sensor.

Depending on the speed with which individual nozzles can be controlled and operated, the substrate web must 02 may be printed multiple times with the same ink until the desired result can be achieved. For this purpose, each ink is preferably at least two in the circumferential direction of the first central cylinder 201 successive double rows of printheads 212 ; 412 or obliquely overlapping rows of printheads 212 ; 412 assigned. Thus, two printheads work 212 ; 412 the same ink at least partially on a relative to the transverse direction A same section of the printing substrate 02 and can increase the resolution by a slight displacement. This is for example at a transport speed of the printing material 02 of 2 m / s and a four-color print reaches a resolution of 1200 dpi (1200 pixels per inch). Preference is still given higher web speeds of, for example, 300 m per minute or more possible. Smaller resolutions and / or fewer colors allow correspondingly higher transport speeds.

In a regular printing operation, all printheads are 212 ; 412 fixedly arranged. This ensures a permanent passport-oriented and / or register-oriented alignment of all nozzles. There are different situations where a movement of the printheads 212 ; 412 necessary is. Such a situation results, for example, during installation and / or maintenance and / or replacement of at least one of the print heads 212 ; 412 , Moving the printheads 212 ; 412 takes place preferably by means of at least one positioning device 751 , To specify which printhead 212 ; 412 to what extent and in which direction must be moved in order to produce an optimal print result, preferably at least one test print image 717 printed and examined. The result will be settings for positioning devices 751 determined, then manually and / or by means of respective positioning drives 778 ; 779 be set.

The at least one test print picture 717 preferably has at least two partial test images 718 ; 719 on, from different printheads 212 ; 412 come. Preferably, each partial print image 718 ; 719 at least one longitudinal picture element 716 and more preferably at least two longitudinal pixels 716 on. Each longitudinal element 716 preferably extends at least in the transport direction T of the printing substrate 02 further than orthogonal to this transport direction T of the printing substrate 02 , Preference is given to the relative position of the longitudinal image elements 716 different partial test images 718 ; 719 on the relative axial position of the creation of the partial test images 718 ; 719 participating printheads 212 ; 412 , in particular group of printheads 212 ; 412 closed. Preferably, each partial print image 718 ; 719 at least one transverse picture element 714 and more preferably at least two transverse pixels 714 on. Each transverse element 714 preferably extends at least in the transverse direction A or transverse direction A as orthogonal to this transverse direction A or transverse direction A. It is preferred from the relative position of the transverse picture elements 714 different partial test images 718 ; 719 to the relative activation times, in particular drop ejection times, of the creation of the partial test images 718 ; 719 participating printheads 212 ; 412 , in particular group of printheads 212 ; 412 closed. This preferably has at least one test printed image 717 furthermore limiting elements 726 on. By means of the delimiting elements 726 For example, a correct orientation of the respective detection sensor with respect to the transverse direction A or axial direction A is enabled and / or facilitated.

At least one positioning device is preferred 751 arranged, by means of at least one print head 212 ; 412 can be adjusted in position, in particular in its position relative to a frame of the printing unit 200 ; 400 in which the printhead 212 ; 412 is arranged. Preference is given to a plurality of positioning devices 751 arranged. For example, every printhead 212 ; 412 a separate positioning device 751 assigned. However, at least one positioning device is preferred 751 multiple printheads 212 ; 412 assigned, in particular such that multiple printheads 212 ; 412 together by means of their common positioning device 751 can be adjusted in position, in particular in their position relative to the frame of the printing unit 200 ; 400 in which these printheads 212 ; 412 are arranged and / or relative to other printheads 212 ; 412 of the printing unit 200 ; 400 ,

The following is a positioning 751 described, the printing machine 01 and / or in particular the at least one printing unit 200 ; 400 preferably more of these positioning devices 751 having. The positioning device is preferred 751 a positioning device 751 for adjusting a position of at least one at least one print head 212 ; 412 having first assembly 752 relative to at least one at least one support body 753 having second assembly 754 in a printing unit 200 ; 400 , The first assembly is therefore preferred 752 at least by means of the positioning device 751 on the second module 754 attached and / or attachable. The first assembly 752 has next to the at least one print head 212 ; 412 for example, at least one further printhead 212 ; 412 on, preferably a total of at least three printheads 212 ; 412 and more preferably at least four printheads in total 752 , For example, the at least one positioning device 751 at least one basic body 787 on. The main body 787 is preferably part of the first module 752 , Preferably, the at least one print head 212 ; 412 on the at least one base body 787 arranged. Further preferred are several, in particular at least three and preferably at least four printheads 212 ; 412 on the at least one base body 787 arranged. The main body 787 is preferably formed in one piece. Alternatively, the base body consists of several interconnected components.

The respective printhead 212 ; 412 on the one hand is with the main body 787 on the other hand, for example via at least one connecting element 786 connected. The at least one connecting element 786 is for example as an alignment device 786 educated. By means of the alignment device 786 is the respective printhead 212 ; 412 prefers individually to the basic body 787 alignable, in particular manually. In this way, preferably more, in particular at least three and more preferably at least four printheads 212 ; 412 relative to the main body 787 and thus aligned with each other. Preferably, these are several, in particular at least three, and more preferably at least four printheads 212 ; 412 and the main body 787 each part of the first module 752 , The printheads 212 ; 412 the first assembly, for example, outside the printing unit 200 ; 400 relative to the main body 787 and thus aligned with each other. As a result, they can be equipped with a corresponding tool and / or with the aid of a camera detecting the relative position and / or with particularly good accessibility to the base body 787 and thus aligned with each other. This results in a particular precisely aligned respective first assembly 752 generated. By this arrangement of several printheads 212 ; 412 in a particularly precise relative position to each other on a respective body 787 need fewer positioning devices 751 within the printing unit 200 ; 400 to be ordered. The positioning device 751 preferably has at least one first positioning drive 778 and / or at least one second positioning drive 779 on, each preferred as an electric motor 778 ; 779 and more preferably as a stepping motor 778 ; 779 are formed. One compared to a number of printheads 212 ; 412 less number of positioning devices 751 therefore allows a relatively small number of positioning drives 778 ; 779 , Alternatively, the first assembly 752 only one print head 212 ; 412 on. Then preferably omitted the alignment 786 between printhead 212 ; 412 and basic body 787 ,

Preferably, the at least one support body 753 the second module 754 Part of the printing unit 200 ; 400 , The positioning device 751 is preferably used to the position of the first assembly 752 at least relative to the support body 753 adjust. The supporting body 753 is for example part of the respective nozzle bar 213 ; 413 , The supporting body 753 is for example part of the frame of the printing unit 200 ; 400 ; Preferably, the at least one support body 753 however, relative to the frame of the printing unit 200 ; 400 movably arranged, in particular by means of at least one adjusting device. This mobility is used, for example, all printheads 212 ; 412 this respective nozzle bar 212 ; 412 to be able to move at once, for example between a printing position and at least one parking position. The at least one parking position is designed for example as a maintenance position, in particular a cleaning of the print heads 212 ; 412 is possible. The at least one parking position is additionally or alternatively designed, for example, as a mounting position in which an exchange and / or assembly of individual print heads 212 ; 412 or preferably multiple printheads 212 ; 412 at one time, in particular an exchange and / or assembly of respective first assemblies 752 as a whole. An alignment of the printheads 212 ; 412 of the respective nozzle bar 213 ; 413 to each other and / or to the support body 753 stays with a movement of the printheads 212 ; 412 between the printing position and the at least one parking position preferably obtained. The respective nozzle bar is preferred 213 ; 413 Part of the second module 754 and / or identical to the second module 754 , The at least one basic body 787 is preferred by operating the positioning 751 relative to the at least one support body 753 and / or relative to the nozzle bar 213 ; 413 movably arranged and / or arranged.

The positioning device 751 preferably has at least one pivot mechanism 756 on, in particular for pivoting the first assembly 752 about a pivot axis P, in particular relative to the support body 753 , This is also the at least one printhead 212 ; 412 about this pivot axis P and / or relative to the support body 753 pivotable. The swivel mechanism 756 is preferred as a sideways displacing screw mechanism 756 designed, in particular as a first sideways displacing screw mechanism 756 , This pivot axis P is preferably orthogonal to one of the positioning device 751 next tangent plane to the substrate 02 provided transport path oriented and / or is preferably oriented orthogonal to the transverse direction A. The positioning device 751 preferably has at least one translation mechanism 757 on, in particular for moving the first module 752 , For example, in a direction of displacement with at least one component in and / or against the transverse direction A and / or relative to the support body 753 , Preferably, the displacement direction is substantially and more preferably completely parallel to the transverse direction A and / or identical with this. In particular, this also means that at least a first printhead 212 ; 412 displaceable, in particular in the direction of displacement and / or relative to the support body 753 , The translation mechanism 757 is preferred as a sideways displacing screw mechanism 757 designed, in particular as a second sideways displacing screw mechanism 757 ,

The respective laterally displacing screw mechanism 756 ; 757 preferably has at least one respective guide element 758 ; 759 and at least one on the respective guide element 758 ; 759 adjacent respective scanning element 761 ; 762 on. By a movement of the respective guide element 758 ; 759 will that be in Contact respective scanning element 761 ; 762 at least relative to the respective guide element 758 ; 759 and / or relative to the body 787 emotional. Preferably serves a screwing movement of the respective guide element 758 ; 759 , In conjunction with a corresponding shape of the respective guide element 758 ; 759 this screwing movement preferably leads to a particularly linear adjusting movement of the respective scanning element 761 ; 762 at least relative to the respective guide element 758 ; 759 and / or relative to the body 787 , This is preferably at least one respective guide element 758 ; 759 with one of the two modules 754 ; 752 via at least one respective threaded connection 763 ; 764 connected. Through the respective threaded connection 763 ; 764 is preferably a respective thread axis 771 ; 772 fixed, to which a respective thread direction G1; G2 is oriented in parallel. The respective threaded connection 763 ; 764 in particular has at least one external thread 766 ; 767 and at least one cooperating and / or cooperable internal thread 768 ; 769 on.

In a first embodiment, the respective guide element 758 ; 759 with the second assemblies 754 via at least one respective threaded connection 763 ; 764 connected. This allows a position of the respective thread axis 771 ; 772 relative to the second assembly 754 stay the same while moving the first assembly 752 relative to the second assembly 754 is carried out. This makes it particularly easy to connect drives. In a preferred second embodiment, the respective guide element 758 ; 759 with the first assemblies 752 via at least one respective threaded connection 763 ; 764 connected. This allows a position of the respective thread axis 771 ; 772 relative to the first assembly 754 stay the same while moving the first assembly 752 relative to the second assembly 754 is carried out. The first assembly 752 can then, for example, together with corresponding drive motors 778 ; 779 and / or at least parts of respective drive trains 776 ; 777 removed and / or mounted.

This is preferably at least one respective scanning element 761 ; 762 with the other of the two assemblies 752 ; 754 in contact, so in particular that module 752 ; 754 that do not have the respective threaded connection 763 ; 764 with the respective guide element 758 ; 759 in contact. In a first embodiment of the arrangement of the respective sensing element 761 ; 762 this is at least one respective scanning element 761 ; 762 with this other of the two assemblies 752 ; 754 connected and in particular firmly connected. For example, this is at least one respective scanning element 761 ; 762 with the first assemblies 752 connected and in particular firmly connected. Alternatively, this is at least one respective scanning element 761 ; 762 with the second module 754 connected and in particular firmly connected. This depends, for example, on which module 752 ; 754 the respective guide element 758 ; 759 over the threaded connection 763 ; 764 in contact. The first embodiment of the arrangement of the respective sensing element 761 ; 762 is exemplary in 5a and 5b shown.

In a second embodiment of the arrangement of the respective sensing element 761 ; 762 indicates the assembly 752 ; 754 with which the respective guide element 758 ; 759 over the threaded connection 763 ; 764 is in contact, a respective leadership 797 ; 798 , in particular linear guide 797 . 798 on, through which the respective sensing element 761 ; 762 relative to this particular assembly 752 ; 754 guided movably arranged, in particular linear guided movable. The respective scanning element 761 ; 762 is then, for example, at one end with the respective guide element 758 ; 759 in contact and rests against the other module at one opposite end 752 ; 754 from, for example, against the support body 753 , As a result, for example, in the case of the scanning element 761 of the swivel mechanism 756 this opposite end to the other assembly 752 ; 754 , in particular on the support body 753 slide along when the translation mechanism 757 is pressed. The second embodiment of the arrangement of the respective sensing element 761 ; 762 is exemplary in 6a and 6b shown. In particular, the second embodiment of the arrangement of the respective sensing element is characterized 761 ; 762 preferably characterized in that this at least one respective scanning element 761 ; 762 and at least one body 787 , the part of the first assembly 752 is, relative to each other with respect to a respective adjustment direction A; T are arranged movable and / or that this at least one respective scanning element 761 ; 762 at the first assembly 752 with respect to a respective adjustment direction A; T relative to at least one main body 787 , the part of the first assembly 752 is, in particular linearly movably mounted and / or that this at least one respective scanning element 761 ; 762 regardless of the relative position of the first assembly 752 to the at least one support body 753 in a same relative position to the at least one support body 753 is arranged held, at least relative to the respective adjustment direction A; T. This respective adjustment direction A; T is preferred in the case of the translation mechanism 757 the transverse direction A and / or preferably in the case of the pivoting mechanism the transport direction T.

Regardless of the embodiment of the arrangement of the respective sensing element 761 ; 762 applies to the respective guide element 758 ; 759 prefers the following. Thus the screwing movement of the respective guide element 758 ; 759 a preferably at least substantially linear movement of the respective sensing element 761 ; 762 in particular relative to the main body 787 or to the second assembly 754 causes, is the respective guide element 758 ; 759 preferably designed such that it along the respective thread direction G1; G2 viewed at least partially has a decreasing radius. A guide line is preferably a line along which a contact between respective guide member 758 ; 759 and respective scanning element 761 ; 762 is provided and / or takes place. Their relative position depends in particular on the respective threaded connection 763 ; 764 from. This preferably has at least one respective guide element 758 ; 759 at least one respective guide line having the same respective pitch as the at least one respective threaded connection 763 ; 764 having. In this case, the pitch of a thread is, in particular, that relative path along the respective thread direction G1; G2, which is covered by exactly one revolution. This is especially a distance between two thread crests. The slope is also referred to as pitch. Preferably applies to the respective guide line at least in a respective contact section 773 ; 774 that one in particular on the thread axis 771 ; 772 related radial distance between the respective guide line on the one hand and a reference point on the respective thread axis 771 ; 772 on the other hand, with displacement of this reference point in the respective thread direction G1; G2 decreases, preferably monotone and more preferably strictly monotone. Under the contact portion is a portion of the outer surface of the respective guide element 758 ; 759 to understand the particular by a maximum adjustment range of the respective sideways displacing screw mechanism 756 ; 757 in and against the respective thread direction G1; G2 is limited.

In a preferred embodiment, this has at least one respective guide element 758 ; 759 at least in the respective contact section 773 ; 774 the shape of a respective truncated cone, said respective truncated cone has in particular a straight circular cone as a basic shape.

By a helical movement of the respective guide element 758 ; 759 the respective guide element moves 758 ; 759 along the respective thread axis 771 ; 772 , Due to the shape of the respective guide element 758 ; 759 The radial distance between a respective reference point on the respective thread axis changes 771 ; 772 on the one hand, and a respective point on the guide line, which depends on the screwing motion, along the thread axis 771 ; 772 just the same coordinate as this reference point. The respective scanning element 761 ; 762 points to the respective thread direction G1; G2 preferably has a constant position. A contact point between each sensing element 761 ; 762 on the one hand and the respective guide element 758 ; 759 on the other hand moves accordingly in or against the radial direction with respect to the respective thread axis 771 ; 772 , If the respective thread axis 771 ; 772 remains stationary causes a shift of the respective sensing element 761 ; 762 in the respective radial direction. This shift in the respective radial direction is preferably used to the position of the first assembly 752 relative to the second assembly 754 to influence.

Preferred is at least one and more preferably any laterally displacing screw mechanism 756 ; 757 at least one respective force element 788 ; 789 assigned to the respective scanning element 761 ; 762 against the respective guide element 758 ; 759 acted upon by a force, in particular against the respective guide element 758 ; 759 is arranged pushing and / or pulling. The respective at least one force element 788 ; 789 is preferred as the respective spring element 788 ; 789 formed, for example as a compression spring 788 ; 789 (exemplified in 5a and 5b ) or as a tension spring 788 ; 789 (exemplified in 6a and 6b ). A movement of the respective scanning element 761 ; 762 from the respective transmission axis 771 ; 772 away is then preferably effected by having a larger radius having region of the respective guide element 758 ; 759 with the respective scanning element 761 ; 762 is brought into contact and thereby the respective scanning element 761 ; 762 displaces or pushes away from it. A movement of the respective scanning element 761 ; 762 to the respective transmission axis 771 ; 772 is then preferably effected by a smaller radius having a region of the respective guide element 758 ; 759 that with the respective scanning element 761 ; 762 in contact, the respective sensing element 761 ; 762 shrinks against and this by the respective force element 788 ; 789 against the respective guide element 758 ; 759 pressed and / or pulled the receding respective guide member 758 ; 759 follows or the respective guide element 758 ; 759 thereby a movement of the respective 771 ; 772 to the respective scanning element 761 ; 762 too allowed. In particular, at least the first sideways displacing screw mechanism is preferred 756 at least a first force element 788 assigned and / or is preferably at least the second sideways displacing screw mechanism 757 at least a second force element 789 assigned.

The positioning device is preferably characterized 751 Accordingly, alternatively or additionally characterized in that the first laterally displacing screw mechanism 756 at least a first guide element 758 and at least one on the first guide element 758 adjacent first scanning element 761 has, for example, as the first pen 761 is trained. This at least a first guide element 758 is preferred with one of the two modules 754 ; 752 , in particular the second module 754 or preferably the first assembly 752 via at least one first threaded connection 763 , in particular with the first external thread 766 and first internal thread 768 , connected by a first thread axis 771 is fixed, to which a first thread direction G1 is oriented in parallel. The at least one first scanning element 761 is preferred with the other of the two assemblies 752 ; 754 , in particular the first module 752 or preferably the second assembly 754 connected or fixedly connected and / or arranged in contact or arranged in contact only by contact. The at least one first guide element 758 preferably has at least one first guide line, which has a same first pitch as the at least one first threaded connection 763 having. The first slope is preferably at least 0.1 mm, more preferably at least 0.3 mm, and even more preferably at least 0.4 mm and / or at most 1 mm, more preferably at most 0.8 mm, and still more preferably at most 0.6 mm , Preferably applies to the at least one first guide line at least in a first contact portion 773 in that a radial distance between the respective first guide line on the one hand and a reference point on the first threaded axis 771 on the other hand decreases with displacement of the reference point in the first thread direction G1, in particular monotonically and more preferably strictly monotonically decreases.

The positioning device is preferably characterized 751 Accordingly, alternatively or additionally characterized in that the second laterally displacing screw mechanism 757 at least a second guide element 759 and at least one on the second guide element 759 adjacent second scanning element 762 has, for example, as a second pen 762 is trained. This at least one second guide element 759 is preferred with one of the two modules 754 ; 752 , in particular the second module 754 or preferably the first assembly 752 via at least one second threaded connection 764 , in particular with second external thread 767 and second internal thread 769 , connected by a second thread axis 772 is set, to which a second thread direction G2 is oriented in parallel. Preferably, the first thread direction G1 is oriented with an optional deviation of at most 10 °, more preferably at most 5 ° and / or completely parallel to the second thread direction G2. The at least one second scanning element 762 is preferred with the other of the two assemblies 752 ; 754 , in particular the first module 752 or preferably the second assembly 754 connected or fixedly connected and / or arranged in contact or arranged in contact only by contact. The at least one second guide element 759 preferably has at least a second guide line, which has a same second pitch as the at least one second threaded connection 764 having. The second slope is preferably at least 0.1 mm, more preferably at least 0.3 mm, and even more preferably at least 0.4 mm and / or at most 1 mm, more preferably at most 0.8 mm, and still more preferably at most 0.6 mm , Preferably, the at least one second guide line is valid at least in a second contact section 774 in that a radial distance between the second guide line on the one hand and a reference point on the second threaded axis 772 on the other hand decreases with displacement of the reference point in the second thread direction G2, in particular monotonically and more preferably strictly monotonically decreases.

Preferably, the positioning device is characterized alternatively or additionally by the fact that the respective contact section 773 ; 774 with respect to the respective thread direction G1; G2 extends over at least 0.1 mm, more preferably at least 0.3 mm and even more preferably at least 0.5 mm, more preferably that the first contact section 773 extends with respect to the first thread direction G1 over at least 0.1 mm, more preferably at least 0.3 mm and even more preferably at least 0.5 mm and / or that the second contact portion 774 extends with respect to the second thread direction G2 over at least 0.1 mm, more preferably at least 0.3 mm, even more preferably at least 0.5 mm and even more preferably at least 0.9 mm.

Preferably, the first thread direction G1 with an optionally existing deviation of at most 10 °, more preferably at most 5 ° and / or completely parallel to an ejection direction of nozzles at least one of the positioning device 751 held printhead 212 ; 412 oriented. Preferably, the second thread direction G2 with an optional deviation of at most 10 °, more preferably at most 5 ° and / or completely parallel to an ejection direction of nozzles at least one of the positioning device 751 held printhead 212 ; 412 oriented.

Preferably, the positioning device is characterized alternatively or additionally by the fact that the at least one respective guide element 758 ; 759 at least in the respective contact section 773 ; 774 has the shape of a respective truncated cone, in particular based on a straight circular cone, more preferably that the at least one first guide element 758 at least in the first contact section 773 has the shape of a first truncated cone and / or that the at least one second guide element 759 at least in the second contact section 774 has the shape of a second truncated cone. Then the respective guide element 758 ; 759 particularly easy to manufacture and must with respect to its rotational position about the respective thread axis 771 ; 772 can only be mounted with relatively low precision.

Preferably, the positioning device is alternatively or additionally characterized in that the respective truncated cone and / or the underlying circular cone has a respective opening angle of at least 1 °, preferably at least 4 ° and more preferably at least 9 ° and / or independently at most 45 °, more preferably at most 20 ° and even more preferably at most 10 °. Particularly preferably, the positioning means is alternatively or additionally characterized in that the first truncated cone has a first opening angle of at least 1 °, preferably at least 4 ° and more preferably at least 9 ° and / or independently at most 45 °, more preferably at most 20 ° and even more preferably at most 10 ° and / or that the second truncated cone has a second opening angle of at least 1 °, preferably at least 4 ° and more preferably at least 9 ° and / or independently at most 45 °, more preferably at most 20 ° and even more preferably at most 10 °. By choosing the opening angle is a translation between the rotational movement of the respective guide element 758 ; 759 on the one hand and the relative displacement of the respective scanning element 761 ; 762 to the respective guide element 758 ; 759 on the other hand. A smaller angle means that per revolution around the respective thread axis 771 ; 772 a smaller displacement of the respective sensing element 761 ; 762 takes place and thus an even more precise setting is possible. Furthermore, a self-locking is achieved by a small angle, the unwanted movement of the positioning 751 prevented. The opening angle is twice that angle between a surface line of the corresponding cone and an axis of symmetry or axis of rotation of the corresponding cone.

Preferably, the positioning device is characterized alternatively or additionally by the fact that the at least one respective guide element 758 ; 759 via a respective drive train 776 ; 777 with a respective adjusting wheel and / or a respective drive motor 778 ; 779 connected is. An adjustment wheel allows manual intervention. At least in addition, a setting by means of drive motors is preferred 778 ; 779 intended. In particular, depending on data that is based on a generated print image and / or on signals of at least one sensor, then a manual and / or an automated adjustment of one or more or all positioning devices can be performed 751 of the printing unit 200 ; 400 and / or the printing press 01 be performed. Further preferably, the positioning device is characterized alternatively or additionally by the fact that the at least one first guide element 758 via a first drive train 776 with a first adjusting wheel and / or a first drive motor 778 is connected and / or that the at least one second guide element 759 via a second drive train 777 with a second adjusting wheel and / or a second drive motor 779 connected is.

The first drive motor 778 is preferably the first positioning drive 778 and / or as a rotary actuator 778 and / or as an electric motor 778 , especially as a stepper motor 778 educated. The second drive motor 779 is preferably the second positioning drive 779 and / or as translational drive 779 and / or as an electric motor 779 , especially as a stepper motor 779 educated. The respective stepper motor 778 ; 779 preferably has at least 36,000 steps per revolution or more. A further improvement of the ratio is preferably additionally or alternatively given by the fact that along the respective drive train 776 ; 777 at least one respective transmission 781 ; 782 is arranged. In particular, it is preferred along the first drive train 776 at least a first transmission 781 arranged and / or along the second drive train 777 at least a second gearbox 782 arranged. The respective transmission 781 ; 782 , in particular the first transmission 781 and / or the second transmission 782 preferably has a gear ratio that is at least five to one, more preferably at least ten to one and even more preferably at least fifteen to one.

Preferably, the positioning device is characterized alternatively or additionally by the fact that along the respective drive train 776 ; 777 at least one respective universal joint 783 ; 784 and / or at least one respective length compensation element 783 ; 784 is arranged. Through a universal joint 783 ; 784 or preferably several universal joints 783 ; 784 along the respective drive train 776 ; 777 can be a deflection of a rotational movement about a deflection angle and / or an offset of a rotation axis between a rotation axis of the corresponding drive 778 ; 779 on the one hand and the respective thread axis 771 ; 772 on the other hand respectively. This allows a corresponding installation position of the respective drive 778 ; 779 and / or facilitates assembly of the positioning device 751 , This also allows the at least one respective guide element 758 ; 759 about the respective threaded connection 763 ; 764 with the movable first assembly 752 to connect and at the same time the respective drive 778 ; 779 on the support body 753 to fix. A length compensation element supports this. In particular, it is preferred along the first drive train 776 at least a first universal joint 783 and / or at least a first length compensation element 783 arranged and / or is preferably along the second drive train 777 at least a second universal joint 784 and / or at least a second length compensation element 784 arranged. Further preferred are along the first drive train 776 at least two first universal joints 783 and / or at least a first length compensation element 783 arranged and / or are preferred along the second drive train 777 at least two second universal joints 784 and / or at least a second length compensation element 784 arranged.

Preferably, the positioning device 751 at least one pivot stop 791 on. The at least one pivot stop 791 preferably forms that point or that axis about which or the base body 787 by means of the at least one pivoting mechanism 756 is arranged pivotably, in particular independent of a current setting of the at least one translation mechanism 757 , For example, the main body 787 by means of the at least one first force element 788 against at least one pivot stop 791 on the one hand and the at least one first scanning element 761 on the other hand loaded with a force and / or pulled and / or arranged pressed. For example, in addition and in particular directly opposite the at least one pivot stop 791 at least one pressure roller 793 arranged, by means of the main body 787 with his contact area 792 against the at least one pivot stop 791 pressed and / or pressed. The pressure roller 793 is for example as an eccentric role 793 formed, whose axis of rotation is arranged pivotably about an eccentric axis. This can be influenced on a contact force. Preferably, the pivot axis P extends through a contact point of the at least one pivot stop 791 with the main body 787 , The main body 787 preferably has the at least one intended contact area 792 on, for the contact with the at least one pivot stop 791 is provided. Preferably, the at least one intended contact area extends 792 with respect to the transverse direction A over a length which is greater than a current contact area between the base body 787 on the one hand and pivot stop 791 on the other hand. This results in particular from the fact that upon actuation of the at least one translation mechanism 757 the main body 787 preferably in its position relative to the at least one pivot stop 791 emotional.

Thus, the main body 787 preferably at least by the force elements 788 ; 789 firmly held in a respective position, by the current setting of the at least one pivot mechanism 756 on the one hand and the at least one translation mechanism 757 on the other hand is defined.

Will be the first guide element 758 around the first thread axis 771 rotated and thereby set in a helical movement, the arrangement of the first sensing element changes when using the first embodiment 761 a particular relation to the transport direction T related position of a contact point between the first guide element 758 on the one hand and the first scanning element 761 on the other hand. This will be the main body 787 in the region of the first scanning element 761 moves with respect to the transport direction T, while in the region of the at least one pivot stop 791 with respect to the transport direction T remains unchanged. As a result, the basic body 787 and with it the appropriate printheads 212 ; 412 pivoted about the pivot axis P. Instead, the second embodiment of the arrangement of the first sensing element 761 used, so causes a rotation of the first guide element 758 around the first thread axis 771 its helical movement, resulting in a particular in the transport direction T related position of the first thread axis 771 and thus the entire first assembly 752 on the one hand, relative to the second module 754 on the other hand changes. Again, in the sequence becomes the basic body 787 and with it the appropriate printheads 212 ; 412 pivoted about the pivot axis P.

Will the second guide element 759 around the second thread axis 772 rotated and thereby set in a helical movement, the arrangement of the second sensing element changes when using the first embodiment 762 a particular relation to the transverse direction A related position of a contact point between the second guide element 759 on the one hand and second scanning element 762 on the other hand.

This will be the main body 787 overall and with it the appropriate printheads 212 ; 412 with respect to the transverse direction A moves. Instead, the second embodiment of the arrangement of the second sensing element 762 used, so causes a rotation of the second guide element 759 around the second thread axis 772 its helical movement, resulting in a particular on the transverse direction A related position of the second thread axis 772 and thus the entire first assembly 752 on the one hand, relative to the second module 754 on the other hand changes. Again, in the sequence becomes the basic body 787 and with it the appropriate printheads 212 ; 412 with respect to the transverse direction A moves.

Since the ratios with respect to the transverse direction A may change as a result of the pivoting movement about the pivot axis P, the pivoting position is preferably adjusted first and then the displacement with respect to the transverse direction A is undertaken.

The first scanning element 761 when using the first embodiment, the arrangement of the first sensing element 761 preferably stationary relative to the main body 787 arranged. The first scanning element 761 when using the second embodiment, the arrangement of the first sensing element 761 preferably movable relative to the main body 787 and permanently by the at least one first force element 788 in its position relative to the second assembly 754 kept arranged. This is preferably supported by at least a first guide 797 , in particular first linear guide 797 , The second scanning element 762 when using the first embodiment, the arrangement of the second sensing element 762 preferably stationary relative to the main body 787 arranged. The second scanning element 763 when using the second embodiment, the arrangement of the second sensing element 762 preferably movable relative to the main body 787 and permanently by the at least one second force element 789 in its position relative to the second assembly 754 kept arranged. This is preferably supported by at least one second guide 798 , in particular second linear guide 798 ,

Preferably, the selection is whether the first or the second embodiment of the arrangement of the first sensing element 761 and / or the second sensing element 762 Use finds, regardless of the question, whether the first guiding element 758 and / or the second guide element 759 about the respective threaded connection 763 ; 764 with the main body 787 or with the second module 754 is arranged connected.

The positioning device is preferably characterized 751 alternatively or additionally characterized in that in addition to the pivot mechanism 756 and / or to the translation mechanism 757 preferably still a suspension mechanism is arranged. The suspension mechanism is preferably for the first assembly 752 and / or at least the main body 787 and the printheads 212 ; 412 with respect to their height and / or with respect to their pivotal position to set an orthogonal to the transverse direction A and to the direction of the pivot axis P axis. For example, the suspension mechanism has at least one oblong hole extending in particular in the transverse direction A. 794 on, by the total of at least two eccentric pins 796 are arranged projecting. For example, the suspension mechanism has two elongated holes 794 on, through each one eccentric pin 796 is arranged projecting. Upon rotation of an eccentric pin 796 the pivotal position changes. With adapted rotation of both eccentric pins 796 the suspension height changes. Through the slots are negative effects between suspension mechanism on the one hand and pivot mechanism 756 and / or translation mechanism 757 on the other hand avoided. Preferably, the base body 787 the oblong holes 794 on. Alternatively, the eccentric pins 796 on the body 787 arranged. Preferably, a diameter corresponds to the eccentric pins 796 the size of the opening of the respective slot 794 in a direction orthogonal to the transverse direction A. This allows the main body 787 and also the printheads 212 ; 412 be positioned backlash-free with respect to this direction.

The positioning device is preferably characterized 751 alternatively or additionally characterized in that the first assembly 752 at least two printheads 212 ; 412 comprising, by means of the positioning device 751 together and with respect to their relative position with each other invariably relative to the at least one second assembly 754 are movably arranged and that the first assembly 752 at least one alignment device 786 by means of which the at least two print heads 212 ; 412 the first assembly 752 are aligned relative to each other.

Preferably, the printing unit is characterized 200 ; 400 alternatively or additionally characterized in that the at least one support body 753 having second assembly 754 by means of at least one adjusting device relative to a frame of the printing unit 200 ; 400 and / or relative to a rotation axis 207 ; 407 a central cylinder 201 ; 401 of the printing unit 200 ; 400 is movably arranged. The second module is preferred 754 a common second assembly 754 and several first assemblies 752 arranged resting. These are preferably a plurality of first assemblies 752 each with its own positioning devices 751 in their respective position relative to this second assembly 754 adjustable. In particular, each of these first assemblies preferably has 752 at least one print head 212 ; 412 on.

Preferred are on a support body 753 several positioning devices 751 arranged. Preferred are on a support body 753 at least indirectly via the positioning devices 751 several first assemblies 752 arranged, in particular by means of the plurality of positioning devices 751 each in their position relative to the support body 753 adjustable. For example, on a support body 753 at least indirectly via the positioning devices 751 the printheads 212 ; 412 two obliquely overlapping rows of print heads 212 ; 412 arranged. By lifting the support body 753 can then all the directly or indirectly attached printheads 212 ; 412 be lifted, in particular without being changed relative to each other. For example, both are on a support body 753 arranged rows of obliquely overlapping printheads 212 ; 412 associated with an ink of the same color.

The printheads 212 ; 412 each preferably have a nozzle surface 214 ; 414 on. This nozzle surface 214 ; 414 is preferably a respective area of the nozzles of the respective printhead 212 ; 412 is traversed and / or the surface normal substantially, that is oriented with deviations of at most 20 ° and more preferably at most 5 ° parallel to an ejection direction of the nozzle. Preferably, the printheads 212 ; 412 in each case at least one distance surface 216 ; 416 on. The at least one distance surface 216 ; 416 serves preferably to the nozzle surface 214 ; 414 to protect against unwanted contact with components or other bodies, for example when cleaning the nozzle surface 214 ; 414 or similar.

Preferably, all printheads 212 ; 412 , which are arranged side by side in the transverse direction A, an equal angle between its ejection direction and a horizontal component of the transport direction T on. For example, however, there are two rows of printheads 212 ; 142 per carrier 753 arranged having different angles between their ejection directions and a horizontal component of the transport direction T. This improves alignment of the printheads 212 ; 412 relative to the central cylinder 201 ; 401 ,

After the printing material web 02 the at least one first printing unit 200 has happened, the printing substrate 02 transported further along their transport path and preferably the at least one first dryer 301 the at least one dryer unit 300 fed. The at least one first dryer 301 is preferred as a flow dryer 301 and / or radiation dryer 301 and / or hot air dryer 301 and / or infrared radiation dryer 301 and / or UV radiation dryer 301 educated.

Along the transport path of the printing material web 02 is preferably at least a second printing unit 400 arranged. The transport path of the printing material web 02 by the at least one second printing unit 400 runs preferably analogous to the transport path through the at least one first printing unit 200 , Within the second printing unit 400 is preferably at least a second, as an inkjet printing unit 411 or ink-jet printing unit 411 trained printing unit 411 on the second central cylinder 401 arranged aligned, which preferably about an associated axis of rotation 407 is rotatably arranged. The second printing unit 400 preferably has its own, the second central cylinder 401 associated second drive motor 408 on, preferably as an electric motor 408 , in particular synchronous motor 408 is formed and further preferred as a direct drive 408 and / or single drive 408 of the second central cylinder 401 is trained. The at least one second printing unit 411 the at least one second printing unit 400 is preferably identical to the at least one first printing unit 211 the at least one first printing unit 200 constructed, in particular with respect to at least one nozzle beam 413 , at least one, as an ink jet printhead 412 trained printhead 412 and their arrangement in double rows or obliquely overlapping rows, the execution and resolution of the printing process, the arrangement, alignment and control of the nozzles and the mobility and adjustability of the at least one nozzle bar 413 and the at least one printhead 412 at least one positioning device 751 , Also a correct orientation of the printheads 412 the at least one second printing unit 400 is preferably checked by at least two adjustment sensors each printed test print images 717 capture and the machine control these test print images 717 evaluates. This is preferably at least a second printing unit 411 as a multi-color printing unit 411 , in particular four-color printing unit 411 educated. With regard to the transport path of the printing material web 02 is after the at least one second printing unit 400 at least a second dryer 331 the at least one dryer unit 300 arranged. The structure of the at least one second dryer 331 is preferably similar to the construction of the at least one first dryer 301 , in particular with regard to a training as a flow dryer 331 and / or hot air dryer 331 and / or radiation dryer 331 and / or infrared radiation dryer 331 and / or UV radiation dryer 331 ,

In at least one variant of the printing press is the printing press 01 as a roll-rotation ink-jet printing machine 01 formed and is at least one transmission body with the at least one first pressure central cylinder 201 a transmission gap forming arranged. Then the at least one printhead is preferred 212 ; 412 on the at least one transmission body aligned. The central pressure cylinder 201 is preferably formed as a counter-pressure cylinder in this case.

Preferably, the at least one first pressure central cylinder 201 a for supporting a printing material web 02 in a first transmission region, in particular a first transmission region for coating means serving motorized rotary body 201 , Preferably, the at least one second central cylinder 401 or central pressure cylinder 401 a for supporting a printing material web 02 in a second transmission region, in particular a second transmission region for coating means serving motorized rotary body 401 , Preferably, the first and / or the second transfer region is an area which is provided for a contact between printing material 02 and coating means, for example a target area of at least one nozzle of at least one print head 212 ; 412 and / or at least one working area of at least one print head 212 ; 412 and / or an entire work area of at least one nozzle bar 213 and / or a gap of the respective pressure central cylinder 201 ; 401 is formed with an optionally arranged transfer body.

Preferably, at least one print head 212 ; 412 at least one flexible supply line and / or at least one flexible data line, for example for a supply and / or removal of coating agent and / or cleaning agent and / or a supply of electrical energy and / or a data connection with a print head control. By the at least one flexible supply line is preferably a mobility of the print head 212 ; 412 guaranteed.

The printheads 212 ; 412 For example, are individually on the at least one nozzle bar 213 attached and / or individually from the at least one nozzle bar 213 solvable. The printheads are preferred 212 ; 412 in groups of several, for example at least two or at least three or at least four printheads 212 ; 412 summarized on respective bodies 787 ordered, each via respective positioning 751 at the respective nozzle bar 213 ; 413 are attached. Preferably, individual printheads 212 ; 412 serviced and / or cleaned and / or replaced. More preferably, the printheads 212 ; 412 groups 412 serviced and / or cleaned and / or replaced. Single printheads 212 ; 412 For example, outside of the printing unit 200 ; 400 and / or outside the printing press 01 be solved by the respective group and / or connected with it. Will be a new and / or reassignable printhead 212 ; 412 and / or a new and / or rearranged group of printheads 212 ; 412 on the at least one nozzle bar 213 ; 413 attached to the already at least one other printhead 212 ; 412 and / or at least one other group of printheads 212 ; 412 is fixed, it does not necessarily result in a precisely matching alignment of this at least one new and / or reordering printhead 212 ; 412 to already attached printheads 212 ; 412 and / or groups of printheads 212 ; 412 in the circumferential direction and / or in the transverse direction A with respect to the respective central cylinder 201 ; 401 and / or skew. This may result in an alignment requirement, in particular a single printhead 212 ; 412 and / or one of at least one group of printheads 212 ; 412 on the one hand to at least one or more other printheads 212 ; 412 the same nozzle bar 213 and / or to at least one or more other printheads 212 ; 412 other nozzle bars 213 ,

At least one adjustment sensor is preferably arranged. More preferably, at least two adjustment sensors are arranged. The at least one adjustment sensor and, in particular, the at least two adjustment sensors are used for data on relative settings of a plurality of, for example at least four printheads 212 ; 412 or groups of printheads 212 ; 412 to grasp each other. Preferably, the at least one adjustment sensor or the at least two adjustment sensors are optical sensors. Such relative settings are, for example, relative geometric positioning of the printheads 212 ; 412 or groups of printheads 212 ; 412 and / or relative actuation times, in particular drop ejection times of the print heads 212 ; 412 and / or groups of printheads 212 ; 412 , The relative settings additionally or alternatively include, for example, relative settings which relate to at least one color density and / or at least one area coverage and / or at least one point size of generated pixels. In the following, the relative setting is related to geometric positioning and / or activation times, in particular drop ejection times. However, the devices and / or processes described also relate to the other relative settings mentioned, as far as no contradictions arise from this.

The at least one adjustment sensor and in particular the at least two adjustment sensors are preferably designed at least as position sensors. The at least two adjustment sensors, in particular position sensors, are designed, for example, as cameras and / or as CCD sensors and / or as CMOS sensors. The at least two adjustment sensors, in particular position sensors, preferably serve to directly or indirectly determine a relative position and / or Control of at least two printheads 212 ; 412 and / or groups of printheads 212 ; 412 to grasp each other. For direct detection, at least one of the at least two adjustment sensors is for example on the nozzles of the respective print heads 212 ; 412 aligned and / or arranged alignable. For a preferred indirect detection is the at least one adjustment sensor and in particular the at least two adjustment sensors are preferably on the substrate 02 Alignable and / or aligned and / or on the transport of substrate 02 aligned transport path arranged and / or arranged alignable and / or aligned on at least one transmission body and / or arranged alignable.

Based on test print images 714 then a comparison of generated partial test images 718 ; 719 performed by the relative to each other to be adjusted printheads 212 ; 412 and / or groups of printheads 212 ; 412 come. As a result, at least temporarily, a respective position of the target area of at least one new and / or re-arranged print head is preferred 212 ; 412 relative to a position of the target area of at least one pre-arranged print head 212 ; 412 and / or at least one new and / or rearranged group of printheads 212 ; 412 relative to a location of the target area of at least one pre-arranged group of printheads 212 ; 412 detectable. This is preferably done by comparing relative positions of the respective printheads 212 ; 412 generated pixels on the substrate web 02 by means of a common setting sensor, in particular position sensor. These relative positions of the pixels are preferably evaluated by means of an evaluation unit, for example the higher-level machine control.

Alternatively or additionally, the printing press is thus preferably characterized in that each of the at least two setting sensors is printed on a printing material 02 and / or on at least one transfer body and / or on at least two, in particular adjacent, printheads 212 ; 412 is aligned and / or alignable.

As at least one adjustment sensor, for example, the already described at least one first print image sensor is used for this purpose. However, preference is given to using other setting sensors than the already described at least one first print image sensor, for example setting sensors specialized for this task.

After installation and / or maintenance and / or replacement and / or cleaning of at least one printhead 212 ; 412 and / or at least one group of printheads 212 ; 412 a test print is preferably used to produce at least one test print image 717 carried out in which the new and / or reordering printhead 212 ; 412 and / or the new and / or reassignable group of printheads 212 ; 412 on the one hand and at least one printhead serving as a reference or leading print head 212 ; 412 on the other hand ink drops on the substrate web 02 transfer. The at least one test print picture 717 is preferably detected automatically by means of at least one adjustment sensor, for example the first print image sensor. In one through the at least one test print image 717 documented and recorded deviation of an actual position of the at least one new and / or re-arranged printhead 212 ; 412 from a desired position is preferably automated adjustment of the position of this printhead 212 ; 412 in the transverse direction A by means of at least one positioning device 751 and / or an adjustment of the control of the nozzles of this printhead 212 ; 412 with respect to a drive timing, in particular drop ejection timing.

An installation position of the at least one new and / or re-arranged printhead 212 ; 412 and / or the at least one new and / or reassignable group of printheads 212 ; 412 in the for the printing material 02 provided transport direction T and / or in the circumferential direction with respect to the respective central cylinder 201 ; 401 can be on the particular timing of the nozzles of this and / or another printhead involved 212 ; 412 and / or this group on printheads 212 ; 412 compensate, preferably analogous to the already described adaptation of printheads 212 ; 412 different double rows and / or obliquely overlapping rows of printheads 212 ; 412 , An installation position of the at least one new and / or re-arranged printhead 212 ; 412 and / or the at least one new and / or reassignable group of printheads 212 ; 412 in the axial direction A or transverse direction A is preferably by means of at least one positioning 751 balanced. An installation position of the at least one new and / or re-arranged print head is preferred 212 ; 412 and / or the newly and / or reassigned group of printheads 212 ; 412 with respect to the pivot axis P by means of the at least one positioning device 751 balanced, this pivot axis P preferably orthogonal to one of the positioning 751 next tangent plane to the substrate 02 intended transport route is oriented.

The at least one adjustment sensor then registers the at least one test print image 717 , In particular, a plurality of such test print images 717 be detected in succession with at least one same setting sensor, at least for the detection of some of the Test print images 717 in each case relative to the transverse direction A relative positions is moved in order to examine there respective layers of corresponding pixels. Alternatively, a sufficient number of adjustment sensors are placed at relevant positions so that axial movement of the adjustment sensors is not necessary.

LIST OF REFERENCE NUMBERS

01

 Printing Machine, Inkjet Printing Machine, Rolling Printing Machine, Rolling Inkjet Printing Machine, Rotary Printing Machine, Rolling Rotary Printing Machine, Rolling Rotary Inkjet Printing Machine

02

 Substrate, substrate web, paper web, textile web, film, plastic film, metal foil

100

 Substrate source, roll-off device, reel splicer

101

 printing material

111

Rotation axis ( 101 )

200

 Printing unit, Non Impact printing unit, Inkjet printing unit, first

201

 Central pressure cylinder, central cylinder, first; body of revolution

202

203

 Roller, guide roller

204

Gap ( 201 ; 203 )

205

206

 Cylinder, impression roller, first

207

Rotation axis ( 201 )

208

 Drive motor, electric motor, direct drive, single drive, synchronous motor

209

 Impression gap, first

210

211

 Printing unit, printing unit, inkjet printing unit, inkjet printing unit, multi-color printing unit, four-color printing unit, first

212

 Printhead, inkjet printhead, first

213

 Nozzle bar, first

214

 Area, nozzle area

215

216

 space area

300

 dryer unit

301

 Dryer, infrared radiation dryer, radiation dryer, flow dryer, UV radiation dryer, hot air dryer, first

331

 Dryer, infrared radiation dryer, flow dryer, radiation dryer, hot air dryer, UV radiation dryer, second

400

 Printing unit, second

401

 Central pressure cylinder, central cylinder, second; body of revolution

407

Rotation axis ( 401 )

408

 Drive motor, direct drive, electric motor, single drive, synchronous motor

409

410

411

 Printing unit, inkjet printing unit, inkjet printing unit, multi-color printing unit, four-color printing unit, second

412

 Printhead, inkjet printhead, second

413

 Nozzle bar, second

414

 Area, nozzle area

415

416

 space area

500

 Post-processing device, folding device, rewinder, sheet cutter, plan delivery

714

 Cross pixel

715

716

 Along pixel

717

 Test print image

718

 Part test image

719

 Part test image

720

721

722

723

724

725

726

 limiting element

751

 positioning

752

 Assembly, first

753

 supporting body

754

 Assembly, second

755

756

 Swing mechanism, laterally displacing screw mechanism, first

757

 Translation mechanism, laterally displacing screw mechanism, second

758

 Guide element, truncated cone, first

759

 Guide element, truncated cone, second

760

761

 Sensing element, first, pin

762

 Scanning element, second, pen

763

 Threaded connection, first

764

 Threaded connection, second

765

766

 External thread, first

767

 External thread, second

768

 Internal thread, first

769

 Internal thread, second

770

771

 Thread axis, first

772

 Thread axis, second

773

 Contact section, first

774

 Contact section, second

775

776

 Powertrain, first

777

 Powertrain, second

778

 Positioning drive, electric motor, stepper motor, quarter turn actuator, drive motor, first

779

 Positioning drive, electric motor, stepper motor, translation drive, drive motor,

second

780

781

 Transmission, first

782

 Transmission, second

783

 Universal joint, length compensation element, first

784

 Universal joint, length compensation element, second

785

786

 Connecting element, alignment device

787

 body

788

 Spring element, compression spring, tension spring, force element, first

789

 Spring element, compression spring, tension spring, force element, second

790

791

 swivel stop

792

 contact area

793

 Pressure roller, eccentric roller

794

 Long hole

795

796

 eccentric

797

 Guide, linear guide, first

798

 Guide, linear guide, second

A

 Direction, transverse direction, direction of adjustment, axial

G1

 Thread direction, first

G2

 Thread direction, second

P

 swivel axis

T

 Transport direction, direction of adjustment

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely 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.

Cited patent literature

• WO 2013/040455 A1 [0007]
• EP 0938973 A2 [0008]
• WO 2014/012560 A1 [0008]
• US 2002/0024554 A1 [0008]
• US 2009/0244124 A1 [0009]

Cited non-patent literature

• DIN 16500-2 [0004]
• DIN 16500-2 [0004]

Claims (12)

Positioning device ( 751 ) for adjusting a position of at least one at least one print head ( 212 ; 412 ) having first assembly ( 752 ) relative to at least one at least one support body ( 753 ) having second assembly ( 754 ) in a printing unit ( 200 ; 400 ), wherein the positioning device ( 751 ) at least one pivoting mechanism ( 756 ) and at least one translation mechanism ( 757 ) and wherein the pivoting mechanism ( 756 ) as a sideways displacing screw mechanism ( 756 ; 757 ) and / or the translation mechanism ( 757 ) as a sideways displacing screw mechanism ( 756 ; 757 ) and wherein the respective laterally displacing screw mechanism ( 756 ; 757 ) at least one respective guide element ( 758 ; 759 ) and at least one on the respective guide element ( 758 ; 759 ) abutting respective scanning element ( 761 ; 762 ) and wherein this at least one respective guide element ( 758 ; 759 ) with the first assembly ( 752 ) via at least one respective threaded connection ( 763 ; 764 ) is connected, through which a respective threaded axis ( 771 ; 772 ) to which a respective thread direction (G1; G2) is oriented in parallel, and this at least one respective scanning element (G1; 761 ; 762 ) with the second assemblies ( 754 ) and wherein the at least one respective guide element ( 758 ; 759 ) has at least one respective guide line, which has a same respective pitch as the at least one respective threaded connection ( 763 ; 764 ) and for which at least in a respective contact section ( 773 ; 774 ) holds that a radial distance between the respective guide line on the one hand and a reference point on the respective thread axis ( 771 ; 772 on the other hand decreases with displacement of the reference point in the respective thread direction (G1, G2) and this at least one respective scanning element ( 761 ; 762 ) on the first assembly ( 752 ) with respect to a respective adjustment direction (A; T) relative to at least one base body ( 787 ), which is part of the first assembly ( 752 ) is movably mounted. Positioning device according to claim 1, characterized in that the pivoting mechanism ( 756 ) as the first sideways displacing screw mechanism ( 756 ) and the translation mechanism ( 757 ) as a second sideways displacing screw mechanism ( 757 ) is trained. Positioning device according to claim 1 or 2, characterized in that the at least one respective guide element ( 758 ; 759 ) at least in the respective contact section ( 773 ; 774 ) has the shape of a respective truncated cone and in particular that the respective truncated cone has a respective opening angle which is at least 1 ° and / or at most 20 °. Positioning device according to claim 1 or 2 or 3, characterized in that the at least one respective guide element ( 758 ; 759 ) via a respective drive train ( 776 ; 777 ) with a respective adjusting wheel and / or a respective drive motor ( 778 ; 779 ) connected is. Positioning device according to claim 4, characterized in that along the respective drive train ( 776 ; 777 ) at least one respective universal joint ( 783 ; 784 ) is arranged. Positioning device according to claim 4 or 5, characterized in that along the respective drive train ( 776 ; 777 ) at least one respective length compensation element ( 783 ; 784 ) is arranged. Positioning device according to claim 4 or 5 or 6, characterized in that along the respective drive train ( 776 ; 777 ) at least one respective transmission ( 781 ; 782 ) is arranged. Positioning device according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7, characterized in that the first assembly ( 752 ) at least two printheads ( 212 ; 412 ), which by means of the positioning device ( 751 ) together and with respect to their relative position with each other invariably relative to the at least one second assembly ( 754 ) are movably arranged and that the first assembly ( 752 ) at least one alignment device ( 786 ), by means of which the at least two print heads ( 212 ; 412 ) of the first assembly ( 752 ) are aligned relative to each other. Positioning device according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8, characterized in that at least one of the laterally displacing screw mechanisms ( 756 ; 757 ) at least one respective force element ( 788 ; 789 ) associated with the respective scanning element ( 761 ; 762 ) against the respective guide element ( 758 ; 759 ) is arranged with a force acting. Positioning device according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9, characterized in that the first thread direction (G1) of the pivot mechanism ( 756 ) with an optional deviation of at most 10 ° parallel to the second thread direction (G2) of the translation mechanism ( 756 ) and / or that the first thread direction (G1) with an optional deviation of at most 10 ° parallel to an ejection direction of nozzles at least one of the Positioning device ( 751 ) held printhead ( 212 ; 412 ) is oriented and / or that the second thread direction (G2) with an optional deviation of at most 10 ° parallel to the ejection direction of nozzles at least one of the positioning device ( 751 ) held printhead ( 212 ; 412 ) is oriented. Positioning device according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10, characterized in that in addition to the pivot mechanism ( 756 ) and / or to the translation mechanism ( 757 ) is still a suspension mechanism is arranged, the at least one slot ( 794 ), by the total of at least two eccentric pins ( 796 ) are arranged projecting. Printing unit ( 200 ; 400 ), the at least one positioning device ( 751 ) according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11, characterized in that the at least one support body ( 753 ) second assembly ( 754 ) by means of at least one adjusting device relative to a frame of the printing unit ( 200 ; 400 ) and / or relative to a rotation axis ( 207 ; 407 ) of a central cylinder ( 201 ; 401 ) of the printing unit ( 200 ; 400 ) is arranged movable and / or that the second assembly ( 754 ) a common second assembly ( 754 ) and several first assemblies ( 752 ) and this plurality of first assemblies ( 752 ) via own positioning devices ( 751 ) in their respective position relative to this second assembly ( 754 ) are adjustable.

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