DE102013226837A1 - Printing machine and method for printing on a printing substrate - Google Patents

Abstract

A printing press has at least one printing unit with at least one inkjet printhead, by means of which a printing material guided in the printing unit can be imprinted with an ink of a specific hue executed as ink in an inkjet method. An application device in the form of an energy source which initiates an energy and / or in the form of an already provided with an already on at least the first substrate side of the still unprinted or already printed substrate application device upstream of a drying aid upstream upstream and / or downstream of the at least one inkjet printhead provided on or in the printing material or component contained in the ink component in the contact case exothermic reactive component applying applicator.

Description

The invention relates to a printing machine and a method for printing a printing material according to claim 1 or 10.

Various printing methods are known which can be used in printing presses. One such printing method is ink jet printing or ink jet printing. In this case, individual ink drops are ejected from nozzles of printheads and transferred to a substrate, that results in a print image on the 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.

The DE 10 2006 004 341 A1 discloses a pretreatment and / or precoating of nonabsorbent substrates for printing with an ink jet printer by means of a polymerizable, acrylate-containing ink, wherein ink of the ink jet print is applied to the coating time or space dependent prior to the ink being applied to the substrate or the ink regardless of the application of the coating is applied to the substrate, wherein optionally with a tempering the applied to the substrate or the coating ink can be heat treated.

By the EP 2 202 081 A1 and the JP 2003-063707 A In each case, a printing press is known, wherein the printing press has a first printing unit and a dryer, wherein the first printing unit has a central cylinder with its own, the first central cylinder associated drive motor and at least one ink jet print head.

By the US 5 566 616 A For example, there is known a printing machine having a rotatable central cylinder, ink jet printheads, a cooling device, and a dryer which operates with either temperature and draft or radiation-induced crosslinking.

By the US 6 053 107 A a printing machine is known which has a driven central cylinder and a dryer with cooling device.

By the DE 10 2011 076 899 A1 a printing machine is known which has at least one printing unit and at least one print head designed as an inkjet printhead.

By the WO 2013/132439 A1 is a printing ink for an inkjet printing process known. To solve the problems associated with indirect inkjet printing when applying color to the z. B. silicone-containing transfer tape to counteract, is the ink including an organic polymer.

The invention has for its object to provide a printing machine and a method for printing a printing material.

The object is achieved by the features of claim 1 and 10, respectively.

An outstanding advantage is the printing press and / or the printing ink and / or the method in relation to the - comparatively for inkjet printing - cost-effective and / or very diverse, and yet high quality requirements sufficient production possibility in particular a printing press, by which an individualized generation of Printed products and / or economical printing of short runs is possible.

Of particular importance is an embodiment in which an extended and / or large range of substrates, in particular in an advantageous embodiment, non-absorbent or less absorbent substrates and / or materials in industrial inkjet printing can be printed.

In one embodiment, in which as a substrate z. B. wood-containing paper with a basis weight between 35 to 80 g / m ² and / or with a surface to be printed, which does not necessarily have to be treated extra and / or smoothed, can with a comparatively cheaper paper, z. B. newspaper and / or offset paper, z. B. an uncoated or slightly or slightly chipped, but otherwise not additionally further surface-treated paper produced. It does not require expensive special papers, as it has been required in Qualitätsinkjetdruck so far.

In one embodiment, it is possible to dispense with a surface refinement known from the prior art or a pretreatment with a corona device in the printing material path of the printing press for the pretreatment of the printing substrates to be printed.

In an advantageous embodiment, an application device for applying energy or a substrate is provided, by which (s) starting and / or accelerating the polymerization process is achieved. As a result, only slightly penetrating and / or bleeding of the color pigments also takes place for substrates not specially optimized for inkjet printing.

By a particularly preferred embodiment of the printing ink with a polymer, penetration of the color pigments together with the aqueous phase into the printing material can be hindered. As a result, the print image wins in terms of sharpness and color depth. The polymer may advantageously be a styrene polymer, a halogenated hydrocarbon polymer, a vinyl polymer, a fluorinated acrylic polymer, a flourinated or non-fluorinated methacrylic polymer, a polyether mixed polymer or copolymers thereof, or a mixture of two or more of the above however, it is preferably formed as an acrylic-based polymer or copolymer or, alternatively, as an ethylene polymer, a propylene polymer or a butene polymer. The ink is preferably aqueous, which u. a. Environmental and wastewater disposal benefits.

Particularly advantageous is the printing of an o. G. Printing material in terms of costs. By printing a z. B. not inketoptimierten paper with the polymer-containing water-based ink we achieved a high quality.

In an embodiment of the printing machine which is advantageous with regard to the machine outlay, it can work in a direct method, with the printing ink or ink passing through the print heads directly onto the substrate, ie. H. the substrate is applied. In a possibly more elaborate, but u. U. with regard to the paint application advantageous variant may alternatively be provided an indirect method using a particular designed as a transfer cylinder transfer means.

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

Show it:

1 a schematic representation of a printing press with a) a first and b) an alternative web guide;

2 a schematic representation of a portion of a printing unit with a double row of printheads, an upstream and a downstream application device and an air sword;

3 a schematic diagram of a paint droplet applied to a substrate a) before and b) after drying.

A printing press 01 has at least one printing material source 100 . at least a first printing unit 200 Preferably, at least one means promoting the first drying, ie first drying aid, is preferred 301 , z. B. a first dryer 301 , preferably at least a second printing unit 400 and preferably at least a second drying assisting agent, ie, drying aid 331 , z. B. a second dryer 331 and preferably at least one post-processing device 500 on. 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 printing press 01 with a rotating, the substrate 02 leading cylinder 201 ; 401 , and in the case of an indirect ink jet printing process in addition to e.g. As a likewise rotating transfer cylinder or a circulating belt as a transfer agent, in particular as an indirect roller inkjet printing machine 01 , educated. In the embodiment shown here is the printing press 01 for direct inkjet printing, ie without transfer means, formed. In the case of a roll printing press 01 is the source of printing material 100 as Rollenabspulvorrichtung 100 educated. In the case of a sheet-fed press, the printing material source 100 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 substrate 02 , In the Rollenabspulvorrichtung 100 a roll printing machine 01 becomes at least one web-shaped substrate 02 So a printing material web 02 , preferably a paper web 02 from a substrate roll 101 unwound and preferably aligned with respect to their edges in an axial direction A. The axial direction A is preferably a direction A, which is parallel to a rotation axis 111 a substrate roll 101 and / or at least one central cylinder 201 ; 401 extends. A transport path 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 printing ink at least on one side and preferably in conjunction with the at least one second printing unit 400 is preferably provided on two sides with a printed image.

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 prefers the at least one first dryer 301 to dry the applied ink. Printing ink is to be understood in the preceding and hereinafter generally a coating agent, in particular a printing ink explained in greater detail below, in particular a polymer-containing ink. Preferably, the at least one first dryer 301 Part of a dryer unit 300 , After passing the at least one first dryer 301 and preferably the at least one second printing unit 400 and / or the at least one second dryer 331 becomes the substrate 02 and in particular the printing material web 02 Preferably, the at least one post-processing device 500 fed and further processed there. 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 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.

Preferred is along the transport path of the printing substrate 02 and in particular the printing material web 02 through the printing press 01 after the at least one first printing unit 200 preferably at least the first dryer 301 and / or after the at least one first dryer 301 preferably at least the second printing unit 400 and / or after the at least one second printing unit 400 preferably, the at least one second dryer 331 and / or after the at least one second dryer 331 Preferably, the at least one post-processing device 500 arranged. This ensures that a double-sided printing of the substrate 02 and in particular the printing material web 02 in high quality.

In a preferred embodiment of the printing press 01 this is operable in at least one operating situation with a binder containing a binder, in particular a designed as a polymer or at least comprehensive binder, and / or is or is operated with such a printing ink, which is described below using particularly advantageous examples, and / or is with a chemical and / or energetic pre- and / or post-treatment using a z. B. purpose designed application device 217 ; 218 ; 417 ; 418 operable and / or is or will be with such a pre- and / or post-treatment or application device 217 ; 218 ; 417 ; 418 operated, which is described below using particularly advantageous examples. Such an application device 217 ; 218 ; 417 ; 418 is preferably in the Bedruckstoffweg upstream of at least one drying aid 301 ; 331 ; 219 ; 419 , z. B. a dryer 301 and / or an air sword 219 ; 419 , intended.

In particular, and / or is in an advantageous embodiment, preferably operated with a specific ink and / or such pre-and / or post-press 01 in at least one operating situation with a printing material 02 operated or operated, which in the region of the surface to be printed - at least based on water and / or a predominantly (> 50%) aqueous liquid or phase and / or at least at the time of printing - not - or at least only slightly absorbent and / or hydrophobic (see below), for example non-hydrophilic, and / or z. B. with a wetting or contact angle for the predominantly aqueous ink, for example, less than 90 °, in particular 45.0 °, or preferably less than 5.0 °.

In another advantageous embodiment, the printing machine is preferably operated with a specific printing ink and / or such pre-treatment and / or post-treatment 01 in at least one operating situation with a printing material 02 is operated or operated in the manner of a newspaper, which is also explained in more detail below.

The with an above printing ink and / or an above printing material 02 operated or operable printing press 01 is in the manner of an ink jet printing machine generally described above 01 educated. This can, in advantageous embodiments, by one or more features of the roll printing machine set forth below 01 be executed and / or trained. The following is the substrate for this purpose 02 in the printing machine described below 01 in an embodiment of an above, and z. B. below detailed embodiment and / or the ink as preferably polymer-containing ink in one of the above, and z. B. formed below in more detail detailed embodiments. This can be the substrate 02 preferably as a printing substrate 02 be educated.

The following is a role as a printing press 01 executed printing press 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. Bedruckstoffrollen 101 , which are preferred in the Rollenabspulvorrichtung 100 to be used preferably in each case a sleeve on which the web-shaped substrate 02 for use in the roll printing press 01 is wound up. The printing material web 02 preferably has a width of 700 mm to 2000 mm, but may also have an arbitrarily smaller or preferably larger width. In the Rollenabspulvorrichtung 100 is at least one substrate roll 101 rotatably arranged. In a preferred embodiment, the Rollenabspulvorrichtung 100 for receiving a substrate roll 101 designed suitable, so has only one storage position for a Bedruckstoffrolle 101 on. In another embodiment, the Rollenabspulvorrichtung 100 as a reel changer 100 formed and has storage positions for at least two Bedruckstoffrollen 101 on. The roll changer is preferred 100 designed so that it allows a flying role change, so connecting a first substrate web 02 a currently processed substrate roll 101 with a second substrate web 02 a substrate to be processed below 101 while both the currently processed substrate roll 101 , as well as the substrate to be processed below 101 rotate.

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 axial direction A. The working width of the printing press 01 preferably corresponds to a maximum width, which may have a substrate to still with the printing press 01 to be processed, so a maximum with the printing press 01 processable substrate width.

The Rollenabspulvorrichtung 100 preferably has at least one roll holding device per storage position 103 on, for example, as a clamping device 103 and / or as a clamping device 103 is trained. Preferably, the at least one roller holding device 103 at least a first motor-driven rotary body 103 The at least one roll holding device 103 serves a rotatable attachment of at least one Bedruckstoffrolle 101 , The at least one roll holding device 103 preferably has at least one drive motor 104 on.

Preferably, the Rollenabspulvorrichtung 100 along the transport path of the printing material web 02 after the roll holding device 103 one preferably on a dancer lever 121 deflectable arranged dancer roller 113 and / or a first web edge director 114 and / or a, one of a draw roller 118 and a train press 117 formed intake nip 119 and one as the first measuring roller 141 , in particular feed measuring roller 141 trained first measuring device 141 comprising infeed mechanism 139 on. This draw roller 118 preferably has its own, as Zugantriebsmotor 146 trained drive motor 146 which is preferably connected to a machine control. The draw roller 118 preferably provides at least a second motor-driven rotary body 118 by means of the dancer roller 113 is a web tension adjustable and durable within limits and / or the web tension is preferably kept within limits. Optionally, the Rollenabspulvorrichtung 100 an adhesive and cutting device, flying by means of a roll change, ie without stopping the printing material web 02 can go on.

The first track edge organizer 114 Below is preferred the intake 139 arranged. As part of the intake system 139 is preferably the at least the tension roller 118 arranged, preferably with the Zugpresseur 117 together the intake nip 119 is arranged. The intake nip 119 serves to regulate a web tension and / or a transport of the printing material 02 , By means of the at least one is preferred as the first measuring roller 141 trained first measuring device 141 the web tension measurable. The at least one as the first measuring roller 141 trained first measuring device 141 is in the transport direction of the printing material web 02 preferably in front of the entry nip 119 arranged.

A first printing unit 200 is the Rollenabspulvorrichtung 100 with respect to the transport path of the printing material 02 downstream. The first printing unit 200 has 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 at least one first central cylinder 201 preferably provides at least a third motor-driven rotary body 201 dar. The printing substrate 02 wraps around the first central cylinder in 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. Accordingly, at least 50% and more preferably at least 75% of the cylinder jacket surface of the first central cylinder are preferably seen in the circumferential direction during the printing operation 201 with the printing material web 02 in contact. This means that one, as the contact surface between the at least one first central cylinder 201 and preferably as a printing substrate 02 formed substrate 02 provided partial surface of a cylindrical surface of the at least one first Central cylinder 201 the wrap around the at least one first central cylinder 201 which is preferably at least 180 ° and more preferably at least 270 °.

Along the transport path of the printing material web 02 in front of the first central cylinder 201 the first printing unit 200 is preferably at least one preferred as a second measuring roller 216 trained second measuring device 216 arranged to measure the web tension.

Although this is not absolutely necessary when using the above-mentioned printing ink or even for cost reasons in the printing press 01 can not be provided in a variant along the transport path of the printing substrate 02 in front of the first central cylinder 201 the first printing unit 200 , in particular before the first printing unit 200 , in terms of the possible substrates 02 even more variable version of the printing press 01 a first substrate preparation device 202 or web preparation device 202 on the substrate web 02 acting and / or on the intended transport of the printing material web 02 be arranged aligned. The provided in this embodiment first substrate preparation device 202 is at least a first side and preferably both sides of the substrate web 02 assigned and in particular at least on this first side of the printing substrate 02 and preferably on both sides of the printing material web 02 designed to be effective and / or effective. In an advantageous because less expensive design of the printing press 01 however, it is not an additional substrate preparation device 202 ; 402 provided and / or at least in the first operating situation a possibly present printing stock preparation device 202 ; 402 inactive.

Preferably, along the transport path of the printing material web 02 between the first web edge director 114 and the at least one first central cylinder 201 that of the draw roller 118 and the Zugpresseur 117 formed entry nip 119 arranged.

The in one embodiment of the printing press 01 provided at least a first substrate preparation device 202 is in a preferred embodiment along the transport path of the printing material web 02 after the entry nip 119 and in front of the first central cylinder 201 , in particular before the first printing unit 200 , on the substrate 02 acting and / or on the transport of the printing material web 02 arranged aligned. Preferably, the at least one first substrate preparation device 202 as at least one printing material cleaning device 202 or web cleaning device 202 educated. Alternatively or additionally, the at least one printing material preparation device 202 as at least one coating device 202 formed in particular for water-based coating compositions. Such a coating can serve, for example, a primer with a so-called primer. Alternatively or additionally, the at least one printing material preparation device 202 as at least one corona device 202 and / or discharge device 202 for corona treatment of the substrate 02 be educated. The substrate preparation device 202 is in the event of their presence z. B. in Bedruckstoffweg before the printing unit 200 ; 400 arranged and / or different from a possibly provided, explained in more detail below and z. B. the printing unit in Bedruckstoffweg directly upstream application device 218 ; 418 , Preferred is a first deflection roller 203 trained roller 203 the first printing unit 200 with respect to its axis of rotation parallel to the first central cylinder 201 arranged. This first guide roller 203 is preferred from the first central cylinder 201 spaced apart. In particular, there is preferably a first gap 204 between the first guide roller 203 and the first central cylinder 201 , which is greater than the thickness of the substrate web 02 , The printing material web 02 preferably wraps around a part of the first guide roller 203 and is deflected by this so that the transport path of the printing substrate 02 in the first space 204 both tangential to the first guide roller 203 as well as tangent to the first central cylinder 201 runs. A lateral surface of the deflection roller 203 consists preferably of a comparatively inelastic material, more preferably a metal, even more preferably steel or aluminum.

Preferably, at least one, z. B. as the first impression roller 206 trained first cylinder 206 in the first printing unit 200 arranged. The first impression roller 206 preferably has a lateral surface which consists of an elastic material, for example an elastomer. The first impression roller 206 is preferably by means of a Anstellantriebs to the first central cylinder 201 adjustable and / or arranged remotely from this. 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 , The printing material web 02 preferably passes through the first impression gap in the printing operation 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. Preferably, apart from at most the first impression roller 206 and / or optionally further impression rollers no further rotation body, in particular no further roller and no further cylinder with the at least one first central cylinder 201 in contact. The axis of rotation of the first impression roller is preferred 206 below the axis of rotation 207 of the first central cylinder 201 arranged.

The first central cylinder 201 preferably has its own, the first central cylinder 201 associated first drive motor 208 on, preferably as an electric 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. The first drive motor 208 of the first central cylinder 201 preferably has at least one permanent magnet, which is more preferably part of a rotor of the first drive motor 208 of the first central cylinder 201 is.

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 connected in such a circuit with the machine control, that the machine control on the basis of from the machine control to 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, in particular without interposed sensor, with at least one print head 212 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 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 is as a first inkjet printing unit 211 trained and will also be the first ink-jet printing unit 211 called. The first printing unit 211 preferably has at least one nozzle bar 213 and 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 on that as an inkjet printhead 212 is trained. Preferably, the at least one nozzle bar 213 in each case at least one print head 212 and preferably each multiple printheads 212 on. Every printhead 212 preferably has a plurality of nozzles from which ink droplets 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 as a carrier of the at least one print head 212 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 per 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 transport path of the printing substrate 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, as seen in the axial direction A, is preferred over the entire working width of the printing press 01 and / or width of the bale of the at least one first central cylinder 201 at regular intervals nozzle openings. In one embodiment, this is a single continuous printhead 212 arranged, extending in the axial direction A over the entire working width of the printing press 01 and / or the entire width of the bale of the at least one first central cylinder 201 extends. The at least one row of nozzles is preferred as at least one linear over the entire width of the printing material web 02 formed in the axial direction A extending juxtaposition of individual nozzles. In another preferred embodiment, several print heads are juxtaposed in the axial direction A. 212 on the at least one nozzle bar 213 arranged. Since usually such individual printheads 212 are not provided with nozzles up to an edge of their housing, are preferably at least two and more preferably exactly two rows of print heads extending in the axial direction A. 212 in the circumferential direction of the first central cylinder 201 arranged offset to one another, preferably so that in the axial direction A successive printheads 212 preferably alternately one of the at least two rows of printheads 212 always preferentially alternately a first and a second of two rows of printheads 212 , Two such rows of printheads 212 form a double row of printheads 212 , 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.

Indicates a printhead 212 several nozzles, so form all target areas of the nozzles of this printhead 212 together a workspace of this printhead 212 , Workspaces of Printheads 212 a nozzle bar 213 and in particular a double row of printheads 212 As seen in the axial direction A to each other and / or overlap seen in the axial direction A. In this way, even when not in the axial direction A printhead 212 ensures that seen in the axial direction A at regular and preferably periodic distances target areas of nozzles of the at least one nozzle beam 213 and / or in particular each double row of printheads 212 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 axial direction A. On one or both sides with respect to the axial 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 this at least one nozzle bar composed and is preferably from all target areas of nozzles of these printheads 212 this at least one nozzle bar 213 composed. Preferably, an entire work area corresponds to a double row of print heads 212 seen in the axial direction A the working area of the at least one nozzle beam 213 ,

Preferably, the at least one nozzle bar 213 in the circumferential direction with respect to the at least one first central cylinder 201 several rows of nozzles on. Preferably, each printhead 212 a plurality of nozzles, which further preferably in a matrix of a plurality of rows in the axial direction A and / or a plurality of columns, preferably in the circumferential direction of the at least one first central cylinder 201 are arranged, wherein such columns are further preferably arranged extending obliquely to the circumferential direction, for example, to increase a resolution of a printed image. Preferably in a direction orthogonal to the axial direction A, in particular in the transport direction along the 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 , more preferably four double rows, and more preferably eight double rows of printheads 212 arranged one after the other. More preferably, 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 , more preferably four double rows, and more preferably eight double rows of printheads 212 successively on the at least one first central cylinder 201 arranged aligned.

Here are the printheads 212 at least in the printing operation preferably oriented such that the nozzles of each printhead 212 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 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 It is preferred to associate and / or assign a printing ink of a specific color, for example one of the colors black, cyan, yellow and magenta or a varnish, for example a clear varnish. The corresponding inkjet printing unit 211 is preferred as a four-color printing unit 211 trained and allows a one-sided 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. Preference is then correspondingly more or less printheads 212 and / or double rows of printheads 212 within this corresponding printing unit 211 arranged. In one embodiment, at least in the printing operation, a plurality of rows of printheads 212 , more preferably four double rows, and more preferably eight double rows of printheads 212 successively arranged aligned on at least one surface of at least one transmission means or transmission body, for example at least one transfer cylinder and / or at least one transfer belt.

The at least one print head 212 works for the production of ink droplets preferably according to the drop-on-demand process, in which ink droplets are generated selectively when needed. Preferably, at least one piezo element is used per nozzle, which can reduce a volume filled with ink at high speed by a certain amount when a voltage is applied. This displaces ink which is ejected through a nozzle connected to the volume filled with ink and forms at least one ink droplet. By applying different voltages to the piezo element is on the travel of the piezoelectric element and thus the reduction of the volume and thus the size of the ink droplets influence. In this way, color gradations in the resulting print image can be realized without changing a number of drops contributing to the print image (amplitude modulation). It is also possible to use at least one heating element per nozzle, which generates a gas bubble in a volume filled with ink at high speed by evaporation of printing ink. The additional volume of the gas bubble displaces ink, which in turn is ejected through the corresponding nozzle and forms at least one ink droplet.

In the drop-on-demand process, a droplet deflection after ejection from the corresponding nozzle is not necessary, since it is possible to achieve a target position of the respective ink drop on the moving substrate web 02 with respect to the circumferential direction of the at least one first central cylinder 201 solely by an emission time of the respective ink 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 individually controlling each nozzle, ink drops from the at least one printhead are only at selected times and at selected locations 212 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. An ejection of ink droplets from the at least one nozzle of the at least one printhead 212 is preferably carried out as a function of the predetermined by the machine control rotational position of the first drive motor 208 , In this case, those from the machine control to the first drive motor 208 predetermined desired data of the rotational position of the first drive motor 208 preferably in real time in a calculation of data for controlling the nozzles of the at least one printhead 212 included. An adjustment with actual data of the rotational position of the first drive motor 208 is preferably not necessary and preferably does not take place. An exact and constant position of the printing material web 02 relative to the at least one first central cylinder 201 is therefore of great importance for a passport-friendly and / or register-compatible printed image.

The nozzles of the at least one printhead 212 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 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 on 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 substrate 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.

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 print 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 and / or double rows of printheads 212 of the first printing unit 211 monitored and 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 drops of ink emerging from each first printhead 212 are preferably compared with a layer of pixels which are formed by ink droplets, which consist of a respective second, in the circumferential direction of the at least one first central cylinder 201 after the first printhead 212 lying printhead 212 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 process a same or a different printing ink. It will be a vote of the layers of different printheads 212 monitored printed images. For the same inks, register-based joining of partial images is monitored. For different inks, 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.

In a regular printing operation, all printheads are 212 fixedly arranged. This ensures a permanent passport-oriented and / or register-oriented alignment of all nozzles. There are different situations imaginable in which a movement of the printheads 212 necessary is. A first such situation is a flying roll change or generally a roll change with gluing process. This is a printing material web 02 by means of an adhesive strip with another printing material web 02 connected. This results in a connection point that covers the entire transport path of the printing material web 02 has to go through. This joint has a thickness, ie a smallest dimension, which is greater than a thickness of the printing material web 02 , In essence, the joint is as thick as two substrates 02 and the tape together. This can cause difficulties when the joint is the space between the nozzles of the printheads 212 and the cylinder jacket surface of the at least one first central cylinder 201 happens. The at least one nozzle bar 213 is therefore in at least one direction relative to the axis of rotation 207 the at least one first central cylinder 201 movable. In this way, the distance can be sufficiently increased, but must be subsequently reduced accordingly again. A second such situation results, for example, in a maintenance and / or cleaning at least one of the printheads 212 , The printheads 212 are preferably individually on the at least one nozzle bar 213 attached and individually from the at least one nozzle bar 213 solvable. This allows individual printheads 212 serviced and / or cleaned and / or replaced.

Are several mutually movable nozzle bars 213 arranged, so can at a return of at least one nozzle beam 213 in a printing position minimal malpositions of the nozzle bar 213 occur among each other. An alignment requirement can thus occur, in particular of all printheads 212 a nozzle bar 213 to printheads 212 other nozzle bars 213 , Will be a new and / or reassignable printhead 212 on the at least one nozzle bar 213 attached to the already at least one other printhead 212 is fixed, it does not necessarily result but at most coincidentally an exact matching orientation of this new and / or reordering printhead 212 to the at least one already attached printhead 212 in the circumferential direction and / or in the axial direction A with respect to the at least one first central cylinder 201 , Here too, an alignment requirement may arise, in particular a single printhead 212 to other printheads 212 the same nozzle bar 213 and / or other nozzle bars 213 ,

At least one sensor detects a position of the target area of at least one new and / or re-arranged printhead 212 relative to a location of the target area of at least one pre-attached printhead 212 , An installation position of the at least one new and / or re-arranged print head 212 in the circumferential direction with respect to the at least one first central cylinder 201 can be controlled by controlling the nozzles of this printhead 212 compensate, preferably analogous to the already described adaptation of printheads 212 different double rows of printheads 212 , An installation position of the at least one new and / or re-arranged print head 212 in the axial direction A with respect to the at least one first central cylinder 201 is compensated by means of at least one adjustment mechanism. Preferably, several print heads 212 each have their own adjustment mechanism, more preferably, all print heads 212 each have their own adjustment mechanism.

The printing press 01 has at least one supply system for coating agent, in particular the printing inks, in particular printing ink supply system. Preferably, several print heads 212 , for example, multiple printheads 212 a common nozzle bar 213 , in particular more or more preferably all print heads 212 each of a double row of printheads 212 a common supply system for coating materials or printing inks. This common supply system preferably has at least one normal supply. At least one first liquid line or color line per print head is in each case provided with the at least one normal reserve 212 connected. The at least one normal supply is preferably connected via at least one supply line and at least one discharge to at least one and preferably at least one identical intermediate store.

The normal supply preferably has at least one printing operation and more preferably a continuous level of deviations lying within a narrow tolerance range. This constant level can be achieved, for example, by means of a preferably passive overflow drain and an influx of printing ink. The at least one normal supply and / or the at least one discharge preferably has at least one preferably passive overflow drain, the outflow side of which is preferably connected and / or connectable to the at least one intermediate store. Preferably, at least one preferably designed as a check valve valve is disposed within the at least one supply line and / or within the at least one derivative. At least one first liquid pump is preferably arranged in the at least one feed line. Preferably, a controlled and / or regulated normal pressure prevails in the normal supply, which is further preferably controlled and / or regulated relative to an ambient pressure. Preferably, there is a negative pressure relative to the ambient pressure in the normal supply.

Preferably, ink is pumped from the buffer into the normal supply by at least one pump. Preferably, at least one volume provided as the first gas space is arranged in the at least one normal reserve. The at least one first gas space is preferably connected via at least one first gas line with at least one first gas pump. Preferably there is a same pressure in a second gas space of the intermediate store, as in the at least one first gas space of the at least one normal store. Preferably, the at least one buffer is connected to at least one buffer memory, more preferably via at least one suction line. Preferably prevails in the buffer memory ambient pressure. Preferably, ink is conveyed by the relative negative pressure from the buffer memory in the buffer.

The intermediate and / or normal supply can form an ink reservoir in which an o. G., Preferably polymer-containing ink is held in place as ink.

Preferably, several print heads 212 , for example, multiple printheads 212 a common nozzle bar 213 , in particular more or more preferably all print heads 212 each of a double row of printheads 212 a common power supply system. Preferably, at least one common power line of the power supply extends within the respective at least one nozzle beam over at least 50%, more preferably at least 75% and even more preferably at least 90% of a width of the working area of the respective at least one nozzle bar 213 in the axial direction A and / or the working width of the printing machine 01 , Preferably, each printhead 212 this respective at least one nozzle bar 213 in each case at least one own voltage line, which is connected to this common power line of the power supply. Preferably, each printhead 212 this respective at least one nozzle bar 213 in each case at least one own data line, which is connected to a computing unit, which with respect to the axial direction A outside the working area of the respective at least one nozzle bar 213 and / or with respect to the axial direction A outside each for substrate 02 provided transport path of the printing press 01 is arranged. Thus, so at least run along a portion of the nozzle bar extending in the axial direction A. 213 at least one data line per printhead 212 this at least one nozzle bar 213 parallel to each other.

Preferably, at least one nozzle cleaning device is arranged, which has at least one row of washing nozzles and / or brushes and / or pullers.

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. Preferably, the first, from the at least one first printing unit 200 printed side of the substrate web 02 between a last contact point of the printing material web 02 with the at least one first central cylinder 201 the at least one first printing unit 200 and an area of action of the at least one first dryer 301 with no part of the roll printing press 01 in contact. Preferably, the second, in particular of the first printing unit 200 not printed, the at least one first central cylinder 201 the at least one first printing unit 200 touching side of the substrate web 02 between the last contact point of the printing material web 02 with the first central cylinder 201 the at least one first printing unit 200 and the area of action of the at least one first dryer 301 with at least one guide roller 214 the at least one first printing unit 200 and / or with at least one deflection roller 312 the at least one first dryer 301 in contact. At least one, more preferably as a third measuring roller, is preferred 214 trained third measuring device 214 arranged. This third measuring device 214 is used to measure the web tension. More preferably, the at least one guide roller 214 the first printing unit 200 with the third measuring roller 214 trained third measuring device 214 identical.

The at least one first dryer 301 is preferred as an infrared radiation dryer 301 educated. The at least one first dryer 301 preferably has at least one radiation source 302 on, preferably as an infrared radiation source 302 is trained. A radiation source 302 , preferably infrared radiation source 302 is a device by means of the targeted electrical energy is converted into radiation, preferably infrared radiation and / or is convertible and on the substrate web 02 is directed and / or judged. The at least one radiation source 302 preferably has a defined area of action. In particular, the exposure region is a radiation source 302 in each case the area which contains all the points, in particular without interruption, in a straight line directly or via reflectors with the radiation source 302 can be connected. The area of action of the at least one first dryer 301 consists of the exposure areas of all radiation sources 302 the at least one first dryer 301 together. The area of action of the at least one first dryer 301 preferably has at least one radiation source 302 to one of the at least one radiation source 302 nearest part of the transport path of the printing substrate 02 , By at least one vent opening air is in the interior of the at least one first dryer 301 initiated. Inside the first dryer 301 becomes from the printing material web by the infrared radiation 02 removed to remove water and / or solvent of the printing inks and absorbed by the introduced air. This air is then passed through at least one vent opening from the at least one first dryer 301 dissipated.

In a preferred embodiment, the intended transport path for printing material 02 through the at least one first dryer 301 at least two sections, each extending in directions with vertical components, more preferably with larger vertical than optional horizontal components. Preferably, the intended transport path of the printing material runs along one section at least with a component in the vertical direction upwards. Preferably, the intended transport path of the printing material runs along the other portion at least with a component in the vertical direction downwards. Preferably, the one portion and the other portion of the intended transport path are connected to each other by at least one provided connection piece of the intended transport path. Preferably, the at least one connecting piece extends in a direction with a horizontal component, more preferably with a larger horizontal than optionally present vertical component. This allows the at least one dryer 301 preferably be built very compact.

In the transport direction of the printing material web 02 after the area of action of the at least one radiation source 302 the at least one first dryer 301 is preferably at least a first cooling device 303 arranged. The at least one first cooling device 303 preferably has at least one first cooling roller 304 and preferably a first, to the at least one first cooling roll 304 adjustable and / or employed chill roller press 306 and preferably at least one, to the at least one first cooling roll 304 adjustable and / or employed connecting roller 307 ; 308 on. One of the at least one first cooling roller 304 associated first, as the first chill roll drive motor 311 trained drive motor 311 and the first chill roll press 306 are preferably part of a web tension control, that is, the web tension is arranged regulating and preferably for this purpose at least partially and / or temporarily connected to the higher-level machine control. The at least one first cooling roller 304 preferably provides at least a fourth motor-driven rotary body 304 dar. The printing substrate 02 wraps and preferably contacts along its transport path the at least one first cooling roller 304 with a wrap angle of preferably at least 180 ° and more preferably at least 270 °. The first chill roller press 306 preferably forms with the at least one first cooling roll 304 a first cooling nip 309 , in which preferably the printing material web 02 is arranged and / or the preferred the printing material web 02 passes. This is the substrate web 02 from the chill roll press 306 to the at least one first cooling roller 304 pressed. The at least one first cooling roller 304 the at least one first cooling device 303 is preferred as a cooling roller through which a coolant flows 304 educated.

Along the transport path of the printing material web 02 after the at least one first cooling device 303 is preferably at least a second printing unit 400 arranged. Preferably, along the transport path of the printing material web 02 preferably immediately before the at least one second printing unit 400 and preferably after the at least one first dryer 301 and in particular after the at least one first printing unit 200 arranged at least a second Bahnkantenausrichter, which is preferably formed manually or driven controllable and / or adjustable. The at least one second printing unit 400 is analogous to the first printing unit 200 built up. In particular, the second printing unit 400 a second central pressure cylinder 401 or shortly central cylinder 401 on, in the printing operation of the printing substrate 02 is wrapped, also with a wrap angle of preferably at least 180 ° and more preferably at least 270 °. The second central cylinder 401 preferably provides a fifth motor driven rotary body 401 dar. The second central cylinder 401 the second printing unit 400 preferably has a direction of rotation, which is a direction of rotation of the at least one first central cylinder 201 is opposite. Along the transport path of the printing material web 02 in front of the second central cylinder 401 the second printing unit 400 , in particular in front of the second printing unit 400 , in an above also in connection with the first printing material cleaning device 202 variant mentioned instead or additionally a second substrate preparation device 402 or web cleaning device 402 on the substrate web 02 be arranged acting. When using an abovementioned printing ink but this can also be completely eliminated.

The transport path of the printing material web 02 by the at least one second printing unit 400 runs analogously to the transport path through the at least one first printing unit 200 , In particular, the printing material web wraps around 02 preferably a part of a second guide roller 403 and is deflected by this so that the transport path of the printing substrate 02 in the second space 404 both tangential to the second guide roller 403 as well as tangent to the second central cylinder 401 runs. At least one is preferred as the second impression roller 406 trained cylinder 406 in the second printing unit 400 arranged. The second impression roller 406 is preferably analogous to the first impression roller 206 constructed and arranged, in particular with respect to its mobility and a second impression gap 409 , The second central cylinder 401 is preferably analogous to the first central cylinder 201 arranged and constructed, in particular with respect to a second drive motor 408 of the second central cylinder 401 and a corresponding preferably arranged second rotation angle sensor, which is a rotation angle position of the second drive motor 408 and / or the second central cylinder 401 itself measuring and / or measurable and sending to the higher-level machine control and / or is designed to transmit.

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 in the direction of rotation of the second central cylinder 401 and thus along the transport path of the printing material web 02 after the second impression roller 406 on the second central cylinder 401 arranged aligned. 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 , in particular with respect to at least one nozzle bar 413 , at least one, as an ink jet printhead 412 trained printhead 412 and their arrangement in double 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 beam 413 and the at least one printhead 412 means at least one adjustment mechanism with a corresponding electric motor. An analogous protective cover and / or cleaning device is also preferably arranged. Also a correct orientation of the printheads 412 the at least one second printing unit 400 is preferably checked by the fact that at least one sensor detects a printed image and the machine controller evaluates this printed image. This at least one sensor is preferably at least one second printed image sensor which is designed analogously to the at least one first printed image sensor. Is preferred the at least one second printing unit 411 as a 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 arranged. After the printing material web 02 the at least one second printing unit 400 has happened, the printing substrate 02 transported along their transport path and preferably the at least one second dryer 331 the at least one dryer unit 300 fed. The at least one second dryer 331 is preferably analogous to the at least one first dryer 301 built up. The at least one first dryer 301 and the at least one second dryer 331 are components of at least one dryer unit 300 , Preferably, the second, from the at least one second printing unit 400 printed side of the substrate web 02 between a last contact point of the printing material web 02 with the second central cylinder 401 the at least one second printing unit 400 and an area of action of the at least one second dryer 301 with no part of the roll printing press 01 in contact. At least one deflection roller is preferred 414 the second printing unit 400 arranged. This is preferably at least one deflection roller 414 as the fifth measuring device 414 , in particular fifth measuring roller 414 educated.

The structure of the at least one second dryer 331 is similar to the construction of the at least one first dryer 301 , in particular with regard to a transport path provided for the printing substrate and / or a design as a flow dryer 331 and / or radiation dryer 331 and / or hot air dryer 331 and / or infrared radiation dryer 331 and / or UV radiation dryer 331 , In particular, the at least one second dryer 331 preferably at least one second cooling roll 334 more preferably at least a sixth motor driven rotary body 334 represents. The second cooling roller is preferred 334 by means of a second cooling roller drive 341 driven and / or driven. Preferably, the at least one second dryer 331 with respect to the components described substantially and further preferably completely symmetrical to the at least one first dryer 301 built up. The at least one second dryer 331 is preferably part of the same dryer unit 300 like the at least one first dryer 301 and is more preferably in a same housing 329 arranged. With respect to a spatial arrangement is the dryer unit 300 and are therefore preferred at least a first dryer 301 and the at least one second dryer 331 preferably between the at least one first printing unit 200 and the at least one second printing unit 400 arranged.

Along the transport path of the printing material web 02 after the at least one second dryer 331 is at least an extraction roller 501 arranged. The at least one pull-out roller 501 preferably has its own, as a pull-out roller drive 504 trained drive motor 504 on. The at least one pull-out roller 504 preferably provides at least a seventh motorized rotary body 504 dar. The at least one pull-out roller 501 preferably forms together with one of the at least one pull-out roller 501 employed and / or employable extract press 502 a pull-out gap 503 in which the printing material web 02 is trapped and by the the printing material web 02 is encouraged. The pull-out gap 503 is preferably used to control a web tension and / or transport of the printing material web 02 ,

With regard to the transport path of the printing material web 02 before and / or after the extraction roller 501 , but especially along the transport path of the printing material 02 after at least a first dryer 301 , At least one Wiederbefeuchtungseinrichtung is preferably arranged, which preferably a too large moisture loss of the printing substrate 02 due to the treatment by the dryer unit 300 balances.

Along the transport path of the printing material web 02 after the pull-out gap 503 and / or after the rewet device is at least one rework device 500 arranged, preferably as a folding device 500 is formed and / or a sheet cutter 500 and / or a planned expense 500 or as a winding device 500 is trained. In this and / or by this post-processing device 500 becomes the printing material web 02 preferably folded and / or cut and / or stapled and / or sorted and / or enveloped and / or shipped and / or wound up.

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 means or a 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 aligned to the at least one transmission means. This is directly or indirectly over possibly one or more other transfer agents, the ink on the substrate 02 be applied.

In the following, preferred embodiments of an inkjet operated and / or operable printing press 01 , preferably in the manner of a printing machine described above 01 , but not limited to, and hereby demonstrated or feasible operating modes and equipment.

The printing press can be characterized in one embodiment in that in at least a first mode of operation, for. B. an operation for the production of newspaper or newspaper-like or paperback products, at least by a printing unit 200 ; 400 or by a printing unit 411 ; 411 a first substrate 02 , in particular a printing material web 02 is guided and / or printed or is or is printable, which is formed for example in the manner of uncoated or lightly coated offset printing paper. The substrate 02 is hereby preferably designed as a wood-containing, ie lignin-containing, paper. This then has z. B. at least 2%, in particular at least 5% by weight of woody fibers. The substrate 02 or the underlying paper has z. B. a basis weight after ISO 536 preferably between 35 to 80 g / m ² . The substrate 02 is z. B. from uncoated, for example, by a soft calender (heated chill roll against roller with elastomer sheath) satined (improved) Newsprint and / or formed from a slightly to light coated paper and has in the latter case z. B. a preferably two-sided line with, for example, a total weight of up to 25 g / m ² and / or z. As a basis weight of up to 80 g / m ² on. The paper has z. B. roughness according to Bendtsen ( ISO 8791-2 ) of at least 30 ml / min. To determine an annular measuring surface 100 × 0.15 mm at a pressure of 10 N / cm ² applied to the sample at a differential pressure of 15 ± 0.2 bar. In a preferred development, the printing material embodied as paper can 02 at least one share, e.g. B. of at least 10%, preferably at least 20%, of waste paper derived secondary fibers. The substrate 02 For example, a material thickness d02, generally referred to as thickness d02, can be from 50 to 120 μm, in particular from 60 to 110 μm (for example according to US Pat ISO 534 ).

Preferably, the first substrate 02 on its surface to be printed on any coating containing hygroscopic salts, eg. As alkali or alkaline earth chlorides, in particular calcium chloride (CaCl 2) is enriched or at least contains.

The printing press 01 may be characterized in particular by the fact that, for. B. in at least the first mode of operation, for. B. an operation for the production of newspaper or newspaper-like or book products, at least by a printing unit 200 ; 400 or a printing unit 211 ; 411 a first substrate 02 , in particular a printing material web 02 is guided and / or printed or is or is printable, which is executed on its surface to be printed without an additional coating on the base material forming printing material. That is, the first substrate 02 is only one layer and / or homogeneous from the z. B. formed with fillers, adhesives and / or excipients added fiber material composite and z. B. smoothed as either machine-smooth newsprint or possibly only by using a calender as so-called. "Improved newsprint" in the area of the surface. The substrate 02 is preferably in at least this mode of operation in the form of uncoated offset printing paper, ie without further cost-intensive and / or unnecessarily weighting the paper coating, be it an adhesive coating or a line formed. Although, for example, a binder may be admixed with the pulp provided with the additives, the so-called "liquor", prior to the completion of the paper as a so-called "engine sizing", and is therefore part of the z. B. otherwise uncoated substrate 02 or paper. This substrate 02 if necessary, the paper sizing comprising paper has no additional "surface sizing", ie no coating with a glue, binder or a line. The substrate 02 may have a thickness d02 of 50 to 100 .mu.m, in particular from 60 to 90 microns in this uncoated embodiment.

The first substrate 02 The at least first mode of operation is preferably without surface sizing and / or preferably as uncoated paper, preferably so-called newsprint paper, machine-smooth or calendered or satin finished. This kind of printing material 02 is also referred to below as newspaper printing or short newspaper. The z. B. in the form of a printing substrate 02 trained and preferably by at least one printing unit 200 ; 400 or a printing unit 211 ; 411 guided substrate 02 For example, by open-pored and / or possibly satined and / or in particular wood-containing (ie lignin-containing) paper, eg. B. possibly as so-called. "Natural paper" (ie with untreated, possibly only mechanically satin-finished surface), be formed. It may also contain recycled paper (eg at least 50% secondary recycled fibers) or it may even be a substrate made essentially of waste paper 02 act. The wood content (especially the lignin) of the newsprint contributes to the rigidity of the mostly large and thin pages of a finished newspaper-like or newspaper product.

This, for example, as a particular commercial newspaper and / or without surface sizing and / or preferably designed as uncoated paper first substrate 02 has z. B. a basis weight after ISO 536 from preferably between 35 to 60 g / m ² , in particular 40 to 50 g / m ² for "normal" (machine-smooth) and z. B. 50 to 60 g / m ² for improved paper on. The printing material formed in this way, preferably here by inkjet printing in at least one first mode of operation or machine design, is printed or to be printed 02 has, for example, a roughness according to Bendtsen ( ISO 8791/2 ) from Z. B. more than 70 ml / min, in particular of more than 80 ml / min or even at least 100 ml / min (machine smooth) on.

In the first mode of operation alternative embodiment or mode of operation or an optional feasible second mode or machine design is as (second) substrate 02 a slightly or slightly painted, preferably wood-containing paper provided. The paper can be used as LWC paper (Low Wight Coated) with z. B. a coating weight of 10 to 25 g / m ² line, as ULWC paper (Ultra Low Wight Coated) with z. As a bar of 5 to 10 g / m ² or as FC paper (film coated) with z. B. a non-zero stroke weight of less than 5%. In this case, for example, the paper is painted on both sides and the coating weight is given as the sum of both sides. The second substrate 02 or the underlying paper has - including dash - z. B. a basis weight after ISO 536 preferably between 40 to 80 g / m ² , in particular 40 to 75 g / m ² . The trained as paper second substrate 02 here preferably has a lower roughness than the z. B. optionally in the first mode of operation in the printing press 01 arranged and / or printed newsprint. The roughness according to Bendtsen ( ISO 8791/2 ) is for example at most 60 ml / min, in particular even at most 50 ml / min. This second substrate 02 However, from paper possibly comprising the engine sizing and a slight or light line, it is preferable that there is no additional "surface sizing", ie no coating with a glue or other binding agent. The second substrate 02 may in this coated embodiment have a thickness d02 of 60 to 120 .mu.m, in particular from 70 to 110 .mu.m.

In the first and / or second mode of operation of alternative design or mode of operation or an optional third mode of operation or machine design is as (third) substrate 02 , Which in its nature Überscheidungen with the first and / or the second substrate 02 can have a substrate 02 having an absorbency in the region of its surface to be printed in accordance with the water absorption according to Cobb 60 ( ISO 535 ) of at most 70 g / m ² , in particular at most 60 g / m ² formed. This can also be used for preferably coated papers or possibly only slightly or slightly coated papers of the second printing material version. In one embodiment, the third substrate is characterized 02 characterized in that it has a surface to be printed with a stroke of more than 20 g / m ² , z. B. at least 25 g / m ² coating weight or plastic or metal or paint, in particular as plastic or metal foil 02 or as a train 02 or bow 02 is formed with a lacquered or metallic or plastic surface, and / or with an absorbency corresponding to a water absorption according to Cobb 60 (FIG. DIN 53132 ) of less than 5 g / m ² , in particular less than 1 g / m ² , is formed.

In an embodiment variant of the first, second or third operation or printing material 02 is the supplied or printed substrate 02 as paper or board with a grammage of 30 g / m ² to 450 g / m ² basis weight and / or in the region of its surface to be printed a Bendtsen roughness of at least 30 ml / min and / or at most 200 ml / min and / or formed between 30. In the third version of the operation or the printing material 02 this is due to a stroke or other surface smoothing and / or -verdichtung in the region of its surface to be printed with an absorbency corresponding to the water absorption according to Cobb 60 of at most 70 g / m ² , in particular at most 60 g / m ² formed.

Additionally or instead, the substrate is 02 in an embodiment variant of the first, second or third operating or printing material 02 in the area of its surface to be printed without - a z. B. in inkjet printing known surface refinement, in particular without a silicate pigments and / or polyvinyl pigments comprehensive surface refinement formed. In a specific variant, the first, second or third printing material designed as paper or board is 02 as completely uncoated substrate 02 , z. B. substrate 02 , educated.

In order to allow particularly sharp contours in the printed image and / or a high printing speed, the ink used here in the inkjet process may be particularly thin liquid, which is the penetration into the respective, in particular first or possibly second, printing material 02 and / or the running on the surface of the, optionally second or in particular third, printing material 02 favored. On the one hand, the former can lead to the moisture penetrating deep into the printing material and, accordingly, to be removed again in a time and / or energy-intensive manner. On the other hand, the aqueous liquid with appropriate porosity of the printing material 02 entrain the dispersed in her color particles in the printing material inside, if these z. B. have a relatively small average diameter, which in turn to a considerable lead to deteriorating color brilliance and on the other hand may possibly lead to increased show through. The latter can also lead to a considerably worsening print quality due to bleeding.

To the problem set z. B. also for not specially for inkjet printing optimized substrates 02 and / or to meet in industrial inkjet printing, a water-based printing ink is provided, as it is characterized in one or more embodiments below. The ink described below preferably forms an inkjet ink.

The in the printing press 01 , in particular in one or more printheads 212 ; 412 a trained as an inkjet printing press 01 , in which, for example, an above-mentioned first, second or third printing material 02 in possibly one of its variants or special forms provided and / or printable and / or printed, provided and / or used for printing ink is -. B. for all subsequent embodiments and / or variants - water-based and preferably has a viscosity of 4.0 to 10.0 cP, preferably 5.0 to 9.0 cP, measured for example with a Bohlin viscometer (spindle 18, 100rpm , for example 25 °).

Preferably, this ink - z. B. for all subsequent embodiments and / or variants - a surface tension of z. B. 20 to 40 mN / m, in particular 35 to 35 mN / mm ² or dyn / cm, measured for example with a Sensadyne ST at 25 ° measurement temperature on.

In one or more of the aforementioned embodiments of the ink contains these -. B. for all subsequent embodiments and / or variants - preferably color pigments F, whose average diameter, measured for example by means of a Nanotrac analyzer, at most 0.2 .mu.m, in particular at most 0.15 microns.

In one or more of the aforementioned embodiments of the ink whose density is -. B. for all subsequent embodiments and / or variants - preferably between 1.05 and 1.25 g / ml, in particular between 1.10 and 1.08 g / ml.

In one or more of the aforementioned embodiments of the ink contains these -. B. for all subsequent embodiments and / or variants - preferably a z. B. organic binder, in particular a polymer P, z. B. hydrocarbon polymer. This may basically be a styrene polymer, a halogenated hydrocarbon polymer, a vinyl polymer, e.g. Example, fluorinated acrylic polymer, a flourished or a non-modified methacrylic polymer, a polyether Mischporlymerisat or their Coplymere or a mixture of two or more of the substances mentioned or.

Preferably, however, the printing ink in a first embodiment, an acrylic-based polymer or copolymer, for. Example, an acrylate and / or for example a polymer P from the group of polyvinyl esters, for. For example, polyvinyl acetate P. The degree of polymerization can be 100 to 5,000. The glass transition temperature is z. B. between 15 and 50 ° C.

For example, in a first embodiment for the first advantageous embodiment of the printing ink, at least 0.1%, z. B. at least 1% by weight, in another form at least 3%, in a further expression at least 5% by weight of the ink to the polymer, wherein z. For example, the maximum limit is 30% or alternatively 15%. The proportion of water, for example, accounts for at least 30%, preferably at least 50%. A pigment content given as a solid may in one embodiment be from 2 to 10%, in particular from 3 to 8% by weight and in an alternative embodiment from 3 to 20%, in particular from 5 to 15%. Depending on the addition of further ingredients, the sum of these three components can form 80 to 100%, alternatively 90 to 100%, more alternatively 95 to 100% of the printing ink. In addition to the three components can as further ingredients auxiliaries, eg. B. surface-active and / or defoaming substances and / or a co-solvent may be provided.

In a preferred embodiment of the first embodiment for the printing ink, this comprises as constituent 0.1 to 30% of an acrylate or polyacrylate, 30 to 60% water, 0.1% to 20% of a resin or copolymer, 2 to 10% pigment fraction, 0 , 1 to 5% excipients, such as. B. comprising surface-active and / or defoaming substances, and up to 25% of a cosolvent. Advantageously, it comprises 0.5 to 4.8% of a surface-active substance, in particular wetting agent.

In an alternative, second embodiment of the printing ink, in particular an ethylene polymer, in a third embodiment a propylene polymer or, in a further embodiment, a butene polymer of the printing ink, can be comprised as polymer P.

Regardless of the specific choice and / or expression of the above polymer P this can be at least 0.1%, z. B. at least 1% by weight, in another form at least 3%, account in a further expression at least 5% by weight of the ink on the polymer P, wherein z. For example, the maximum limit is 30% or alternatively 15%. The proportion of water here also accounts, for example, for at least 30%, preferably at least 50%. One as a solid The pigment content given may also be 2 to 10%, in particular 3 to 8% by weight in one embodiment and 3 to 20%, in particular 5 to 15%, in an alternative embodiment. Depending on the addition of further ingredients, the sum of these three components can form 80 to 100%, alternatively 90 to 100%, more alternatively 95 to 100% of the printing ink. In addition to three components, adjuvants, e.g. B. surface-active and / or defoaming substances and / or a co-solvent may be provided.

In addition to the water base, the color pigments, and preferably the polymer P, a surfactant, e.g. B. a wetting agent, be provided to reduce the Obeflächenspannung.

In addition to the water base, to the color pigments, preferably the polymer and optionally the wetting agent, a dispersion-supporting and / or stabilizing dispersant may be provided.

In one or all of the aforementioned or subsequent embodiments, the dry ink z. For example, a surface hardness of 3H (Erichsen pencil hardness), as determined by the pencil hardness, d. H. she has to be scratch-proof to this degree.

In one or all of the aforementioned or subsequent embodiments, the printing ink is in the form of a black ink and has an uncoated and / or uncoated paper or printing material in the above sense 02 a value for the after DIN 16536 measured reflection of 1.2 to 1.6, in particular 1.3 to 1.5, on.

In one or all of the aforementioned or subsequent embodiments, the dried ink at an angle of 60 °, a gloss of <60%, preferably <55%, which, for example, by a reflectometer, z. B. Micro tri gloss Fa. BYK-Gardner, according to the DIN 67530 is determined.

In an advantageous embodiment, the printing press 01 in a first operating situation and / or execution with a first, unprimed in the above sense. substrate 02 and a first ink and in a second operating situation and / or execution with a second -. B. in the above sense slightly, easily - coated substrate 02 and the same or a second ink with pigmentation to produce the same hue. In the case of a second ink, however, this may be due to the weight fraction of the polymer, for. B. differ by at least 5%, in particular 10% by weight of the first printing ink. In particular, the second printing ink has a smaller proportion by weight of the paint composition.

The polymer-containing printing ink, in particular inkjet ink, is of very particular advantage in conjunction with the inkjet or inkjet printing machine 01 trained printing press 01 , in which a above-mentioned printing material 02 is printed in the manner of an offset paper. If the aqueous paint drop, ie the ink drop T (see eg. 3 ), on the substrate 02 applies, the color pigments are held at least to a large extent by the polymers in the region of the substrate surface. Absorbing the color pigments together with the aqueous phase W is largely blocked (see, for example, US Pat. 3a ) and b).

The nature of the polymer P and its mass ratio to the pigments P is set such that in the substantially dry printed substrate 02 z. B. at least 80%, preferably 90% of the pigments of an ink drop T in an outer layer thickness of the printing material 02 which have a strength of z. B. 20 microns, preferably 10 microns, and / or 20%, preferably 10% of the substrate thickness. The substantially dry state may describe a state in which the printed substrate 02 after a residence time of for example one hour under ISO conditions (temperature 15 ° C, pressure 1.013 bar, humidity 60%) is located.

In an advantageous embodiment - in particular in conjunction with an above, z. B. first, second or especially third substrate 02 and / or in conjunction with an og, z. B. preferred first or possibly other design of the ink - is the printing press 01 downstream of the ink jet printhead 212 ; 412 on the substrate path with one with the substrate 02 , in particular with at least the first substrate side medium or preferably directly together acting drying aids 219 ; 419 , z. B. a dryer described above 301 ; 331 and / or with a blowing device, by means of which on the freshly printed printing material side - in particular under high pressure - a fluid flow can be directed, for. B. directed to the substrate side so-called. Air sword 219 ; 419 or air knife, executed. In the dryer 301 ; 331 and / or the blowing device 219 ; 419 Upstream Vorruckstoffweg is before and / or after the at least one inkjet printhead 212 ; 412 one on at least the first substrate side of the still unprinted or already printed substrate 02 (or to the appropriate location in the railway) directed application device 217 ; 218 ; 417 ; 418 in the form of an energy source that initiates energy 217 ; 417 and / or in the form of a with an already on or in the printing material or in the printing ink component contained in the contact case exothermic reaction component applying applicator 218 ; 418 intended. It can only one, z. B. preferably the energy source 217 ; 417 or alternatively the applicator 218 ; 418 or at the same time both such application devices 217 ; 218 ; 417 ; 418 be provided. Preferably, as the energy source 217 ; 417 trained application device 217 ; 417 downstream and as the applicator 218 ; 418 trained application device 218 ; 418 upstream of the printing area, ie the ink application arranged.

In principle, such heat-releasing reaction components may be any pair of substances that change their physical and / or chemical state with the release of heat when they are combined. For example, the substance pair comprises a halogen, for. Bromine, and an unsaturated hydrocarbon, e.g. As an alkene, in particular ethene, wherein z. B. the latter as a component in the printing ink and the former, for example, part of a through the applicator 218 ; 418 is to be applied liquid.

In the execution and / or operation of the printing press 01 with a substrate made of paper or cardboard 02 , instead, or in addition to this in the dryer 301 ; 331 and / or the sword of the air 219 upstream Vorruckstoffweg before and / or after the at least one inkjet printhead 212 ; 412 an application device 218 ; 418 in the form of an agent comprising an initiator for the polymerization of monomers contained in the printing ink and / or in the form of an applicator comprising an agent which promotes the solubility of a polymer and / or copolymer promoting the solubility of the printing ink.

As an energy source 217 ; 417 can a thermal contact, z. B. heat conduction and Berührkontakt to a heater, or preferably contactless energy on the -. B. first, second or third - substrate 02 transmitting source, in particular a radiation source 217 ; 417 , preferably an electromagnetic radiation source in the IR or NIR, UV or visible spectral range, z. B. in the form of a laser device 217 ; 417 , or an ultrasonic source, be provided. In the version as a laser device 217 ; 417 This can, for example, as an ultrashort laser pulses, z. B. a pulse duration less than 1 ∙ 10-6 s, in particular at most 1 ∙ 10-7 s, high power density, z. B. at least 100 W / mm ² , in particular at least 400 W / mm ² , based on the average over the beam cross-sectional area, executed laser device 217 ; 417 be formed, which is to be understood as the beam cross-sectional area lying within the 10% limit of the maximum intensity cross-sectional area at the level of the beam exit. For generating these laser pulses, the laser device 217 ; 417 be designed as a system with beam extraction, in particular with the beam generation independent beam extraction. The laser beam can be moved over, for example, an optical system in printing material width. It can be a plurality of such pulsating laser - with stationary or transverse to the substrate oscillating beam - transverse to the substrate width next to each other in the laser device 219 ; 419 be provided.

As an applicator 218 ; 418 An application device applying an ionic or free-radical initiator may be provided. As the ionic liquid, a fluid can be applied which, for example, in at least one significant concentration, for. B. at least to a 1.0 wt.%, A, for example, at least partially dissolved, salt having a melting point less than 100 ° C at 1 bar ambient pressure. This is preferably a liquid at 21 ° C and 1 bar ambient pressure already liquid rate.

The applicator 218 ; 418 may be formed as a contactless spray device or as a contact-based coating or dipping device.

In the case of one in the Bedruckstoffweg before the at least one ink jet print head 212 ; 412 intended application device 217 ; 218 ; 417 ; 418 this is with her near the print head z. At most by a distance traveled in a printing operation in two, preferably one second and / or by at most 1.0 m, in particular by at most 0.5 m, preferably at most 0.2 m, spaced from upstream of the first or the first from a plurality of offset in the transport direction and / or successively arranged inkjet printheads 212 ; 412 of the printing unit 211 ; 411 and / or between the upstream end of action of the first or the first of a plurality of inkjet printheads offset and / or consecutively arranged in the direction of transport 212 ; 412 of the printing unit 211 ; 411 and a first the printing unit 211 ; 214 upstream in Bahnweg upstream, at least partially wrapped roller 203 ; 403 and / or on the circumference of a central cylinder 201 ; 401 directed and / or in or on the frame of a printing unit 211 ; 411 arranged.

In the case of one in the Bedruckstoffweg after the at least one inkjet printhead 212 ; 412 intended application device 217 ; 218 ; 417 ; 418 this is with its near the end near the print head at most by a distance traveled in an operation in one second and / or at most 1.0 m, in particular by at most 0.5 m, preferably at most 0.2 m, spaced after the downstream effect of the or last of several considered in the transport direction offset and / or successively arranged inkjet printheads 212 ; 412 of the printing unit 211 ; 411 and / or between the downstream end of action of the first or the first of a plurality of inkjet printheads offset and / or arranged one behind the other in the direction of transport 212 ; 412 of the printing unit 211 ; 214 and a first the printing unit 211 ; 214 Downstream in the train path downstream, at least partially wrapped roller 214 ; 414 and / or on the circumference of a central cylinder 201 ; 401 directed and / or in or on the frame of a printing unit 211 ; 411 arranged.

In a -. B. preferred - execution of the printing press 01 - in connection with all designs of the printing ink and / or the printing substrate 02 - is the inkjet printhead 212 of the printing unit 211 ; 411 directly on the substrate 02 or on the one central cylinder 201 ; 401 wrapping material 02 directed.

In an optionally advantageous with regard to an optimization of the media alternative - in connection with all versions of the printing ink and / or the printing substrate 02 - is inkjet printhead 212 of the printing unit 211 ; 411 on a z. B. is designed as a transfer belt or transfer cylinder trained transfer agent and applied to the latter ink from this medium or directly on the substrate 02 is transferable or is transferred.

That by the applicator 218 ; 418 to be applied agent may contain a surfactant, in particular a surfactant, and / or be present as a fluid having a maximum of 10% solids.

For the mentioned embodiments, the ink jet print head ( 212 ) an ink reservoir and / or a line connection to an ink reservoir with a water-based ink formed as ink, which as constituents both color pigments F and a polymer P comprises and preferably in one of the above-mentioned performers or embodiments, in particular the first embodiment is formed.

The polymer P in one of the o. G. Due to its nature and / or its mass ratio, embodiments hinder penetration of the color pigments F together with the aqueous phase W into the printing substrate and / or, in the not yet applied state of the printing ink, are physically at least partially due to color pigments F attached and / or coupled, in particular color pigments enveloped F completely or at least partially.

When printing a substrate in the printing press 01 is the -. B. first or second or third - substrate 02 in at least one printing unit 200 ; 400 or by at least one printing unit 211 ; 411 printed by a direct or indirect ink jet method with an ink formed as ink and subsequently on at least the printed side by an air sword 219 ; 419 and / or a dryer 301 dried. On the Bedruckstoffweg before and / or after printing, but according to an input of the printing machine provided for printing material source 100 and even before the dryer 301 and / or the sword of the air 219 ; 419 is via an application device 217 ; 218 ; 417 ; 418 Energy in the form of heat and / or radiation energy and / or with a component already contained on or in the substrate or in the printing ink in the contact case exothermically reacting reaction component on the substrate 02 applied.

Preference is given to the printing material 02 on the Bedruckstoffweg after printing, but even before the drying aid, z. B. the dryer 301 and / or the sword of the air 219 ; 419 , via an application device 217 ; 417 Energy applied in the form of heat and / or radiation energy, without that on the Bedruckstoffweg between the beginning of the printing machine provided printing material and printing a pretreatment with a primer effective as a primer, ie eg without a above, a primer applying substrate preparation device 202 , he follows.

In one embodiment or mode of operation is by the printing unit 211 ; 411 a - z. B. second or third - substrate 02 with a surface to be printed with an absorbency corresponding to the water absorption according to Cobb 60 of at most 70 g / m ² , in particular at most 60 g / m ² , guided and printed. In further education becomes by the printing mechanism 211 ; 411 a - z. B. third - substrate 02 with a surface to be printed made of plastic or metal or lacquer, in particular as plastic or metal foil or as a web or sheet with lacquered or metallic or plastic surface formed substrate 02 and / or a printing material 02 with an absorbency corresponding to a water absorption according to Cobb 60 of less than 5 g / m ² , in particular less than 1 g / m ² , guided and printed.

It can be through the printing unit 211 ; 411 in an embodiment or mode of operation as a paper or board having a grammage of 30 g / m ² to 450 g / m ² basis weight and / or with a roughness in the region of its surface to be printed according to Bendtsen of at least 30 ml / min and / or at most 200 ml / min and / or between 30 formed substrate 02 be guided and printed or be.

In particular, as a paper or board with a grammage of 30 g / m ² to 450 g / m ² basis weight and / or in the region of its surface to be printed with an absorbency corresponding to a water absorption according to Cobb 60 of at most 70 g / m ² , in particular at most 60 g / m ² and / or in the region of its surface to be printed, a roughness according to Bendtsen of at least 30 ml / min and / or at most 200 ml / min and / or between 30 formed substrate 02 be guided and printed or be.

In a variant or alternative or alternatively feasible mode of operation can by the printing unit 211 ; 411 a printing material 02 be from a wood-containing paper with a basis weight between 35 to 80 g / m ² and / or be printed with a surface to be printed with a roughness according to Bendtsen of at least 30 ml / min or be.

For the above operations, a printing ink in z. B. an above embodiment, in particular in the first embodiment used.

In an advantageous mode of operation -. B. in connection with the ink in one of the above, in particular the first embodiment - is carried out by the downstream of the printing and preferably a dryer 30 and / or air sword 219 ; 419 upstream energy input, in particular by heating to at least 55 ° C, preferably to at least 60 ° C, a melting of polymer particles present in the ink, in particular polymer shells surrounding color pigments, and / or a film of the polymer and z. B. displacement of an aqueous phase towards the surface and / or initialization of the polymerization process and / or pre-drying of the applied printing ink.

In order to keep penetration of the pigments and / or bleeding as small as possible, the application of the reaction component takes place on the Bedruckstoffweg before printing z. B. such that when conveyed in printing substrate 02 between the end of the application and the beginning of printing at the same printing place is at most two seconds, in particular at most one second, preferably at most half a second.

In order to keep penetration of the pigments and / or bleeding as small as possible, the application of energy takes place on the Bedruckstoffweg after printing z. B. such that when conveyed in printing substrate 02 between the end of the printing and the beginning of the application at the same printing place is not more than two seconds, in particular at most one second, preferably at most half a second.

A conveying speed can be at least 60 m / min, preferably at least 120 m / min in the printing operation.

LIST OF REFERENCE NUMBERS

01

 Printing Machine, Inkjet Printing Machine, Rolling Printing Machine, Rolling Inkjet Printing Machine, Web Printing Press,

02

 Substrate, substrate web, paper web

100

 Substrate source, roll-off device, reel splicer

101

 printing material

102

103

 Roller holding device, clamping device, clamping mandrel, clamping cone, clamping device, mandrel, clamping cone, clamping shaft; Rotation body, first

104

Drive motor, electric motor ( 103 )

107

Beam ( 101 )

108

Axle, support, support frame ( 107 )

109

Pivot axis ( 108 )

110

111

Rotation axis ( 101 ; 103 )

112

 frame

113

 dancer roll

114

 Bahnkantenausrichter, first

115

116

 aligning

117

 Zugpresseur

118

 draw roller; Rotation body, second

119

 nip

120

121

 dancer arm

139

 infeed

140

141

 Measuring roller, feed measuring roller, measuring device, first

146

Drive motor, traction drive motor ( 118 )

200

 Printing unit, first

201

 Central pressure cylinder, central cylinder, first; Rotation body, third

202

 Substrate preparation device, web preparation device, coating device, corona device, discharge device, substrate cleaning device, web cleaning device, dedusting device, first

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

212

 Printhead, inkjet printhead, first

213

 Nozzle bar, first

214

 Guide roller, measuring roller, measuring device, third

215

216

 Measuring roller, measuring device, second

217

 Application device, downstream, energy source

218

 Application device, upstream, applicator

219

 Drying aid, blowing device, air sword

300

 dryer unit

301

 Drying aids, dryers, infrared radiation dryers, radiation dryers, flow dryers, UV radiation dryers, hot air dryers, first, main dryer

302

 Radiation source, infrared radiation source

303

 Cooling device, first

304

 Chill roll, first; Rotation body, fourth

305

306

 Kühlwalzenpresseur

307

 Connecting roller, first

308

 Connecting roller, second

309

 Cooling nip, first

310

311

Drive motor, chill roll drive motor ( 304 ), first

312

 deflecting

329

Casing ( 300 )

330

331

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

332

333

 Cooling device, second

334

 Chill roll, second; Rotation body, sixth

335

336

 Chill roller press, second

339

 Cooling nip, second

340

341

Drive motor, chill roll drive motor ( 334 ), second

342

343

 Measuring roller, measuring device, sixth

400

 Printing unit, second

401

 Central pressure cylinder, central cylinder, second; Rotation body, fifth

402

 Substrate cleaning device, web cleaning device, dedusting device, second

403

 Roller, guide roller

404

Gap ( 401 ; 403 )

405

406

 Cylinder, impression roller, second

407

Rotation axis ( 401 )

408

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

409

 Impression gap, second

410

411

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

412

 Printhead, inkjet printhead, second

413

 Nozzle bar, second

414

 Deflection roller, measuring roller, fifth

415

416

 Measuring roller, measuring device, fourth

417

 Application device, downstream, energy source

418

 Application device, upstream, applicator

419

 Drying aid, blowing device, air sword

500

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

501

 Extractor, rotary body, seventh

502

 Auszugpresseur

503

 excerpt gap

504

Drive motor, extract roller drive ( 501 )

505

d02

Thickness ( 02 )

A

 Direction, axial

F

 color pigment

P

 polymer

T

 ink drops

W

 aqueous phase

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

• DE 102006004341 A1 [0004]
• EP 2202081 A1 [0005]
• JP 2003-063707A [0005]
• US 5566616 A [0006]
• US 6053107 A [0007]
• DE 102011076899 A1 [0008]
• WO 2013/132439 A1 [0009]

Cited non-patent literature

• DIN 16500-2 [0003]
• DIN 16500-2 [0003]
• ISO 536 [0078]
• ISO 8791-2 [0078]
• ISO 534 [0078]
• ISO 536 [0082]
• ISO 8791/2 [0082]
• ISO 536 [0083]
• ISO 8791/2 [0083]
• ISO 535 [0084]
• DIN 53132 [0084]
• DIN 16536 [0102]
• DIN 67530 [0103]

Claims (15)

Printing machine ( 01 ) with at least one printing unit ( 211 ; 411 ), through which a the printing unit ( 211 ; 411 ) fed and / or fed substrate ( 02 ) by means of at least one inkjet printhead ( 212 ; 412 ) of the printing unit ( 211 ; 411 ) is printable on at least a first substrate side with an ink formed as ink, and downstream of the ink jet print head ( 212 ; 412 ) on the substrate at least one with the substrate ( 02 ) co-acting drying aid ( 301 ; 331 ; 219 ; 419 ) is provided, characterized in that in the drying aid ( 301 ; 331 ; 219 ; 419 upstream upstream printing material path before and / or after the at least one inkjet printhead ( 212 ; 412 ) on at least the first substrate side of the still unprinted or already printed substrate ( 02 ) directed application device ( 217 ; 218 ; 417 ; 418 ) in the form of an energy source ( 217 ; 417 ) and / or in the form of an application device which applies an exothermically reacting reaction component to a component already present on or in the printing substrate or in the printing ink ( 218 ; 418 ) is provided. Printing machine ( 01 ) according to claim 1, characterized in that as energy source ( 217 ; 417 ) via thermal contact or contactlessly via radiation energy to the printing substrate ( 02 ) and / or that the applicator ( 218 ; 418 ) is designed as a contactless spraying device or as a contact-based coating or dipping device. Printing machine ( 01 ) according to claim 1 or 2, characterized in that in the Bedruckstoffweg before the at least one ink jet print head ( 212 ; 412 ) provided application device ( 217 ; 218 ; 417 ; 418 ) with its near the end of the print head at most by a distance traveled in a printing operation in two seconds and / or at most 1.0 m upstream of the upstream acting end of or the first of a plurality of viewed in the transport direction offset and / or successively arranged inkjet printheads ( 212 ; 412 ) of the printing unit ( 211 ; 411 ) and / or between the upstream action end of the first or the first of a plurality of inkjet printheads (in the direction of transport) and / or arranged one behind the other ( 212 ; 412 ) of the printing unit ( 211 ; 411 ) and a first the printing unit ( 211 ; 214 ) upstream in the web path upstream, at least teilumschlungenen roller ( 203 ; 403 ) and / or on the circumference of a central cylinder ( 201 ; 401 ) and / or in or on the frame of a printing unit ( 211 ; 411 ), and / or that in the printing material after the at least one ink jet print head ( 212 ; 412 ) provided application device ( 217 ; 218 ; 417 ; 418 ) with its print head near end at most by a distance traveled in an operation in two seconds and / or at most 1.0 m after the downstream acting end of the last or viewed in the transport direction offset and / or successively arranged inkjet printheads ( 212 ; 412 ) of the printing unit ( 211 ; 411 ) and / or between the downstream end of action of the first or the first of a plurality of inkjet printheads offset and / or arranged one behind the other in the direction of transport ( 212 ; 412 ) of the printing unit ( 211 ; 214 ) and a first the printing unit ( 211 ; 214 ) downstream in the web path downstream, at least teilumschlungenen roller ( 214 ; 414 ) and / or on the circumference of a central cylinder ( 201 ; 401 ) and / or in or on the frame of a printing unit ( 211 ; 411 ) is arranged. Printing machine ( 01 ) according to claim 1, 2 or 3, characterized in that the printing unit ( 211 ; 411 ) fed substrate ( 02 ) in the region of its surface to be printed with an absorbency corresponding to the water absorption according to Cobb 60 of at most 70 g / m ² and / or at most 60 g / m ^{2 is} formed. Printing machine ( 01 ) according to claim 1, 2, 3 or 4, characterized in that the printing unit ( 211 ; 411 ) in at least one operating situation supplied substrate ( 02 ) comprises a surface to be printed made of plastic or metal or paint and / or is formed with an absorbency corresponding to a water absorption according to Cobb 60 of less than 5 g / m ² . Printing machine ( 01 ) according to claim 1, 2, 3, 4 or 5, characterized in that the printing unit ( 211 ; 411 ) in at least one operating situation supplied substrate ( 02 ) as a paper or board having a grammage of 30 g / m ² to 450 g / m ² basis weight and / or in the region of its surface to be printed has a Bendtsen roughness of at least 30 ml / min and / or at most 200 ml / min and / or or between 30 is formed. Printing machine ( 01 ) according to claim 6, characterized in that the printing unit ( 211 ; 411 ) in at least one operating situation fed and / or supplied substrate ( 02 ) is designed as wood-free or wood-containing natural paper or as uncoated recycled paper in satined or machine smooth design and / or that of the printing unit ( 211 ; 411 ) in at least one operating situation fed and / or supplied substrate ( 02 ) as an at least on its side to be printed with a dash of a Line weight of more than 5 g / m ² , dash-containing paper is formed. Printing machine ( 01 ) according to claim 1, 2, 3, 4, 5, 6 or 7, characterized in that the inkjet printhead ( 212 ) has an ink reservoir and / or a line connection to an ink reservoir with a water-based ink formed as ink, which as components both color pigments (F) and a polymer (P) in particular as constituents 0.1 to 30% of a hydrocarbon polymer or Copolymer (P), 30 to 60% water, 0.1 to 20% of a resin or copolymer, 2 to 10% pigment content, 0.1 to 5% auxiliaries, and up to 25% of a cosolvent. Printing machine ( 01 ) according to claim 1, 2, 3, 4, 5, 6, 7 or 8, characterized in that in the energy source ( 217 ; 417 ) Subordinate substrate path downstream of the printing unit ( 211 ; 411 ) comprehensive printing unit ( 200 ; 400 ), as a drying aid ( 301 ; 331 ) a dryer based on radiation and / or thermal contact with a hot gas stream or a heating surface ( 301 ; 331 ) and / or in which the energy source ( 217 ; 417 ) Subordinate substrate path in the printing material by a the printing unit ( 211 ; 411 ) comprehensive printing unit ( 200 ; 400 ) as a drying aid ( 219 ; 419 ) directed to the first substrate side fluid flow of a blowing device ( 219 ; 419 ) is provided. Method for printing a printing substrate in a printing press, wherein a printing substrate ( 02 ) by at least one printing unit ( 211 ; 411 ) printed by a direct or indirect ink jet method with an ink formed as ink and in the course on at least the printed side by a with the substrate ( 02 ) co-acting drying aids ( 301 ; 331 ; 219 ; 419 ), characterized in that the printing substrate ( 02 ) on the Bedruckstoffweg before and / or after printing, but after an input of the printing machine provided for printing material and even before the with the substrate ( 02 ) co-acting drying aids ( 301 ; 331 ; 219 ; 419 ), via an application device ( 217 ; 218 ; 417 ; 418 ) Energy in the form of heat and / or radiation energy and / or a component already present on or in the printing substrate or in the printing ink in the contact case exothermically reacting reaction component ( 02 ) is applied. A method according to claim 10, characterized in that by the printing unit ( 211 ; 411 ) a printing material ( 02 ) is guided and printed with a surface to be printed with an absorbency corresponding to the water absorption according to Cobb 60 of at most 70 g / m ² . A method according to claim 10 or 11, characterized in that by the printing unit ( 211 ; 411 ) a printing material ( 02 ) with a surface to be printed made of plastic or metal or lacquer and / or a printing substrate ( 02 ) is guided and printed with an absorbency corresponding to a water absorption according to Cobb 60 of less than 5 g / m ² . A method according to claim 10, 11 or 12, characterized in that by the printing unit ( 211 ; 411 ) as a paper or board with a grammage of 30 g / m ² to 450 g / m ² basis weight and / or with a roughness in the region of its surface to be printed according to Bendtsen of at least 30 ml / min and / or at most 200 ml / min formed substrate ( 02 ) is guided and printed. A method according to claim 10, 11, 12 or 13, characterized in that downstream of the printing and preferably a dryer ( 301 ; 331 ) and / or sword of the air ( 219 ; 419 ) upstream energy input melting of polymer particles present in the ink and / or polymer shells surrounding color pigments and / or a filming of the polymer and displacement of an aqueous phase toward the surface and / or initialization of the polymerization process and / or pre-drying of the applied printing ink. The method of claim 10, 11, 12, 13 or 14, characterized in that the application of the reaction component takes place on the Bedruckstoffweg before printing such that in underprinted printing material ( 02 ) is at most two seconds between the end of the application and the beginning of printing at the same printing substrate and / or that the application of the energy on the printing material after printing such that in underprinted printing material ( 02 ) is between the end of the printing and the beginning of the application at the same printing place not more than two seconds.

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