EP3377327A1 - Druckaggregat und ein verfahren zum betreiben eines druckaggregats - Google Patents
Druckaggregat und ein verfahren zum betreiben eines druckaggregatsInfo
- Publication number
- EP3377327A1 EP3377327A1 EP16795082.3A EP16795082A EP3377327A1 EP 3377327 A1 EP3377327 A1 EP 3377327A1 EP 16795082 A EP16795082 A EP 16795082A EP 3377327 A1 EP3377327 A1 EP 3377327A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support body
- printing unit
- printing
- reference point
- unit according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
- B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04563—Control methods or devices therefor, e.g. driver circuits, control circuits detecting head temperature; Ink temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
- B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
- B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
- B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
- B41J11/00216—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using infrared [IR] radiation or microwaves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
- B41J11/0022—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using convection means, e.g. by using a fan for blowing or sucking air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J2025/008—Actions or mechanisms not otherwise provided for comprising a plurality of print heads placed around a drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/54—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
- B41J3/543—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements with multiple inkjet print heads
Definitions
- the invention relates to a printing unit according to the preamble of claim 1 and a method for operating a printing unit.
- Non-impact printing processes are understood to mean printing processes which do not require a fixed, that is physically immutable, printing form. Such printing methods can produce different print images in each printing process. Examples of non-impact printing processes are ionographic processes, magnetographic processes, thermographic processes, electrophotography, laser printing and in particular inkjet printing processes or ink-jet printing processes. Such printing methods usually have at least one image-forming device, for example at least one print head.
- such a printhead is designed, for example, as an inkjet printhead and has at least one and preferably several nozzles, by means of which specifically at least one printing fluid, for example in the form of ink drops, can be transferred to a printing material.
- Multi-color printing is referred to as the Passer (DIN 16500-2), when individual print images of different colors are combined exactly to a picture. Also in the context of inkjet printing, appropriate measures must be taken to maintain register and / or register. In particular, it is important that a relative position between the print head and printing material is known and / or kept constant.
- WO 2014/184126 A1 discloses a printing unit in which print heads are arranged on respective support bodies.
- a device by means of which a single print head is displaceable in a compensation direction. If print heads arranged adjacent to a common carrier are displaced relative to one another by thermal expansion of the carrier in the compensation direction, a lock can be opened, the print head can be displaced by heating and thermal expansion of a propagation block with respect to the compensation direction relative to the carrier, and the lock is closed again become.
- the invention has for its object to provide a printing unit and a method for operating a printing unit.
- An advantage of a printing unit wherein at least one transport direction is determined by a provided for a transport of substrate transport path through the printing unit and wherein the printing unit has at least a first support body on which at least a first image-forming device is arranged and in both the transport direction as extends in a horizontal and orthogonal to the transport direction oriented transverse direction and wherein the printing unit at least a first temperature control device for the targeted generation of a
- Supporting body and a spaced at least in the transport direction of this first point second location of this at least one first support body consists in particular that bent this support body and thus a location of the at least one image-forming device with respect to the transport direction targeted influenced and thus a high quality of a printed image can be easily achieved.
- This advantage also results from a method for operating a printing unit which has at least one first support body on which at least one first image-forming device is arranged, wherein at least one transport direction is defined by a transport path provided by the printing unit for transport of printing material and wherein a position information about a position of at least a first, arranged on the at least one first support body reference point to at least one further reference point is obtained from a measurement and wherein the at least one further reference point fixed relative to a frame of the printing unit and / or stationary relative to at least one arranged second imaging device supporting the second support body of the printing unit and wherein, depending on at least this position information at least a first temperature control means for selectively influencing a temperature at least at one he most of this at least one first support body is controlled and / or operated regulated.
- the invention is preferably applicable to various non-impact printing processes, in particular for ionographic processes, magnetographic processes, thermographic processes, electrophotography, laser printing and in particular inkjet printing processes or inkjet printing processes.
- non-impact printing processes in particular for ionographic processes, magnetographic processes, thermographic processes, electrophotography, laser printing and in particular inkjet printing processes or inkjet printing processes.
- the printing unit may have a central cylinder or a multiplicity of rotatable and / or stationary printing material guide elements, without a
- Fig. 1 is a schematic representation of a printing machine
- Fig. 2 is a schematic representation of a printing unit with four
- Print heads are partially arranged in printing positions partially in, for example, formed as mounting positions rest positions;
- Fig. 3 is a schematic representation of a printing unit according to FIG. 2, wherein by means of the two left positioning jigs in
- Maintenance positions are arranged with associated maintenance devices
- Fig. 4 is a schematic representation of a part of a supporting body and a
- Positioning device viewed in a longitudinal direction, wherein for the sake of simplicity, only a part of a set of printheads is shown;
- Fig. 5 is a schematic representation of a supporting body in a transverse direction
- Fig. 6 is a schematic representation of several in the longitudinal direction one behind the other arranged support body and associated sensors and devices.
- ink and printing inks are preferably solutions or dispersions of at least one colorant in at least one solvent.
- suitable solvents include, for example, water and / or organic solvents.
- the pressure fluid may be formed as under UV light crosslinking pressure fluid.
- Inks are relatively low viscosity printing fluids and inks are relatively high viscosity printing fluids. Inks preferably have no binder or relatively little binder, while printing inks preferably contain a relatively large amount of binder and more preferably further auxiliaries. Colorants may be pigments and / or dyes, pigments being insoluble in the application medium, while dyes are soluble in the application medium.
- printing ink in the sense of a liquid or at least free-flowing dyeing fluid to be printed in the printing press should be understood in the preceding and following - which does not only refer to the colloquial rather with the expression "Ink” in connection brought higher viscous coloring fluid for use in rotary printing machines, but in addition to these higher viscous coloring in the
- low-viscosity dyeing fluids such as "inks”, in particular inkjet inks, but also powdered dyeing fluids such as toner, are included and in the following also, in particular, colorless paints, when referring to printing fluids and / or inks and / or printing inks.
- means for a pretreatment (so-called precoating) of the printing substrate 02 are preferably meant, if mention is made of printing fluids and / or inks and / or printing inks.
- the term coating agent is to be understood as synonymous.
- Under a printing machine 01 is here at least one pressurized fluid to a
- a printing press 01 preferably has at least one printing material source 100, preferably at least one first printing aggregate 200, preferably at least one first drying assisting agent, ie. H. first drying aid 301, z. B. a first dryer 301, and preferably at least one post-processing device 500 on.
- the first printing material source 100 preferably at least one first printing aggregate 200, preferably at least one first drying assisting agent, ie. H. first drying aid 301, z. B. a first dryer 301, and preferably at least one post-processing device 500 on.
- Printing machine 01 optionally has, for example, at least a second one
- Compressor 400 and, for example, at least a second drying
- the printing machine 01 is preferably designed as an inkjet printing machine 01.
- the printing press 01 is designed as a roll printing machine 01, more preferably as a roll ink jet printing machine 01.
- the printing machine 01 can be used as a
- the at least one first printing aggregate 200 is preferably designed as at least one first inkjet printing aggregate 200.
- the printing material source 100 is as
- Roll-out device 100 is formed.
- the printing material source 100 is designed as a sheet feeder.
- at least one printing material 02 is preferably aligned, preferably at least with respect to an edge of this printing material 02.
- a roller printing machine 01 is at least one web-shaped substrate 02, so a substrate web 02, preferably a
- Paper web 02 or a textile web 02 or a film 02 for example a
- the axial direction A is preferably a direction A which extends parallel to a rotational axis of a printing material roll 101 in the transverse direction A.
- the transverse direction A is preferably a horizontally extending direction A.
- the transverse direction A is oriented orthogonal to a transport direction T provided for a transport of especially sheet-like substrate 02 and / or orthogonal to an intended transport path of the printing material 02 through the at least one first printing unit 200.
- the transport path provided for transporting the at least one printing material 02 and in particular the printing material web 02 runs after the at least one printing material source 100, preferably through the at least one first
- Printing unit 200 where the printing material 02 and in particular the printing substrate 02 preferably by means of at least one ink at least on one side and preferably in combination with the at least one second printing unit 400 is preferably provided on two sides with a printed image.
- the transport direction T is preferably in each case that direction which runs tangentially to a section and / or point of the intended transport path which are closest to a respective reference point.
- This particular reference point is preferably at the point and / or on the component associated with the
- Transport direction T is related.
- the invention can also be used for other non-impact printing processes or completely different printing processes such as, for example, a rotary printing, offset printing, planographic printing, high-pressure printing, screen printing or intaglio printing Contradictions result.
- the invention will be described in connection with a web-shaped substrate 02, that is to say a substrate web 02.
- the printing machine 01 is preferably designed as a roll printing machine 01, more preferably as a roll ink jet printing machine 01.
- the printing press 01 is designed, for example, as a rotary printing press 01, for example as a rotary rotary printing press 01, in particular a rotary rotary inkjet printing press 01.
- the intended transport path of the printing substrate 02 and in particular of the printing material web 02 preferably passes through the at least one first dryer 301 in order to dry the applied printing ink.
- the at least one first dryer 301 is part of a dryer unit 300.
- Substrate web 02 preferably fed to the at least one post-processing device 500 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 one
- the at least one folding device 500 is preferably printed on two sides
- Substrate 02 further processed, for example, to individual printed products.
- At least the first dryer 301 and / or after the at least one first dryer 301 is preferably at least the second printing unit 400 and / or after the at least one first printing unit 200 along the transport path of the printing substrate 02 and in particular of the printing substrate 02 by the printing press 01
- the at least one second printing unit 400 preferably at least a second dryer 331 and / or after the at least one second dryer 331 preferably arranged the at least one post-processing device 500.
- a working width of the printing machine 01 is a dimension which preferably extends orthogonally to the intended transport path of the printing substrate 02 through the at least one first printing unit 200 and / or horizontally, more preferably in the axial direction A or transverse direction A.
- the working width of the printing press 01 corresponds preferably a maximum width, which may have a substrate 02, in order to be processed with the printing machine 01 and / or the at least one first printing unit 200, so a maximum processable with the printing machine 01 substrate width.
- the roll-off device 100 preferably has at least one roll holding device 103 per storage position, which is designed, for example, as a clamping device 103 and / or as a clamping device 103.
- the at least one roller holding device 103 preferably has at least one drive motor 104, in particular electric motor 104.
- the Rollenabspulvortechnisch 100 along the transport path of
- This draw roller 1 18 preferably has its own, designed as Switzerlandantriebsmotor 146 drive motor 146.
- the infeed 139 is preferably arranged.
- the tension roller 1 18 is arranged, with which preferably the Switzerlandpresseur 1 17 together the feed nip 1 19 is arranged forming.
- the feed nip 1 19 serves to control a web tension and / or a transport of the printing material 02.
- the web tension can be measured by means of the at least one first measuring roller 141.
- the at least one first measuring roller 141 is in
- Transport direction T of the printing substrate 02 preferably arranged in front of the nip 1 19.
- the first printing unit 200 is the Rollenabspulvortechnisch 100 with respect to
- the first printing unit 200 preferably has at least one printing material guide element 201 which is designed, for example, as at least one first central pressure cylinder 201 or, shortly, central cylinder 201. If in the following a central cylinder 201 is mentioned, then a pressure central cylinder 201 is always meant.
- the printing material web 02 wraps around in printing operation, the first Beticianstoffleitelement 201 and in particular the first central cylinder 201 at least partially. In this case, a wrap angle is preferably at least 180 ° and more preferably at least 270 °. But it is also possible, lower
- At least one second measuring roller 216 for measuring the web tension is preferably arranged.
- at least one second measuring roller 216 for measuring the web tension is preferably arranged.
- Substrate web 02 in front of the first central cylinder 201 of the first printing unit 200 is preferably at least a first substrate preparation device 202 or web preparation device 202 on the intended transport of the
- Substrate web 02 arranged aligned.
- the at least one first substrate preparation device 202 is at least one
- Substrate cleaning device 202 or web cleaning device 202 is formed.
- the at least one printing material preparation device 202 is designed as at least one coating device 202, in particular for water-based coating compositions. Such a coating serves, for example, a primer.
- the at least one coating device 202 serves, for example, a primer.
- Substrate preparation device 202 as at least one corona device 202 and / or discharge device 202 for corona treatment of the printing substrate 02 formed.
- a roller 203 of the first printing unit 200 which is designed as a first deflecting roller 203, is arranged with respect to its axis of rotation parallel to a rotational axis 1 1 1 of the first central cylinder 201.
- This first deflecting roller 203 is preferably arranged at a distance from the first central cylinder 201.
- the thickness of the printing material web 02 is a smallest dimension of the
- the printing material web 02 preferably wraps around a part of the first deflecting roller 203 and is deflected by the latter in such a way that the transport path of the printing material web 02 in the first intermediate space 204 is both tangential to the first deflecting roller 203 and tangential to the first
- Central cylinder 201 runs.
- a lateral surface of the deflection roller 203 preferably consists of a comparatively inelastic material, more preferably a metal, even more preferably steel or aluminum.
- At least one, designed as a first impression roller 206 first cylinder 206 is disposed in the first printing unit 200.
- 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 adjustable by means of a Anstellantriebs to the first central cylinder 201 and preferably forms together with the first
- the Central cylinder 201 has a first impression gap 209.
- the first central cylinder 201 has preferably has its own first drive motor 208, which is preferably designed as an electric motor 208 and more preferably as a direct drive 208 and / or individual drive 208.
- a first rotation angle sensor is preferably arranged, which has a rotational angle position of the first drive motor 208 and / or the first
- Zentraizylinders 201 itself measuring and / or measuring and sending to a higher-level machine control and / or is capable of transmitting. The first
- Rotation angle sensor is designed for example as a rotary encoder or absolute value encoder. With such a rotation angle sensor, a rotational position of the first drive motor 208 and / or preferably a rotational position of the first Zentraizylinders 201 is preferably determined by means of the higher-level machine control absolutely.
- the first drive motor 208 of the first Zentraizylinders 201 such circuit technology connected to the machine control that the
- Machine control due to from the machine control to the first
- a region of the machine control which prescribes the rotational angle position or rotational position of the first central cylinder 201 and / or of the first drive motor 208 is preferably connected directly, in particular without an interposed sensor, to an area of the machine control system controlling at least one print head 212 of the first printing aggregate 200.
- the at least one first printing unit 21 1 represents in particular a first printing location 21 1.
- the at least one first printing unit 21 1 is preferably designed as a first inkjet printing unit 21 1.
- the first printing unit 21 1 preferably has at least one nozzle bar 213 and preferably several, in particular four Nozzle bar 213 on.
- a nozzle bar 213 is a component which preferably has at least 80% and more preferably at least 100% of the working width of the
- Printing machine 01 extends and serves as a carrier of the at least one print head 212.
- the at least one nozzle bar 213 is preferably at least partially by at least one in particular first support body 616; 636; 637;
- At least one image-forming device 212 is arranged, preferably at least one print head 212, more preferably at least one ink-jet print head 212.
- 636; 637; 638 arranged a plurality of first image-forming means 212, more preferably offset relative to each other with respect to the transverse direction A and / or arranged at a distance.
- first support body 616; 636; 637; 638 arranged at least two, more preferably at least five and even more preferably at least ten first image-forming means 212, more preferably offset relative to each other with respect to the transverse direction A and / or arranged at a distance.
- the at least one support body 616 preferably has at least one bottom segment 624.
- the at least one bottom segment 624 further preferably serves to support the individual image-forming devices 212, in particular print heads 212. in the
- a printhead 212 is used as the respective image-forming device 212.
- each general image forming apparatus 212 be included so long as it does not conflict.
- the at least one arcuate segment 624 has, for example, one or more printhead openings 626, for example a printhead opening 626 per printhead 212.
- Printhead opening 626 opens the at least one bottom segment 624 preferably in a direction pointing at least one component vertically downward and / or in a direction of adjustment of the respective print head 212 and / or nozzle bar 213 and / or support body 616; 636; 637; 638.
- the at least one print head 221 is preferred at least partially disposed protruding through the at least one printhead opening 626.
- Printing unit 200 preferably has the at least one first print head 212, which is designed in particular as an inkjet print head 212.
- the at least one nozzle bar 213 in each case has at least one print head 212 and more preferably in each case a plurality of print heads 212 which, in particular with respect to the
- Each print head 212 preferably has a plurality of nozzles, from which
- Ink drops are ejected and / or ejected.
- an axial length of a bale of the at least one first central cylinder 201 is at least as large as the working width of the printing press 01.
- at least one such nozzle bar 213 is arranged, more preferably a plurality of nozzle bars 213 per printing unit 21 1 are arranged.
- Each nozzle is preferably a unique one
- each target area of a nozzle is in particular based on that for the
- Substrate 02 provided transport direction T and / or a longitudinal direction B clearly defined at least in the printing operation.
- the longitudinal direction B is preferably oriented horizontally and oriented orthogonal to the axial direction A or transverse direction A.
- each target area of a nozzle in particular in relation to the circumferential direction of the at least one first central cylinder 201, is clearly defined at least in the printing operation.
- a target region of a nozzle is that region of space which is in particular substantially rectilinear and which is located in one
- Ejecting direction of this nozzle extends from this nozzle.
- Eject directions of nozzles of a common printhead 212 are aligned parallel to each other.
- the ejection direction of at least one nozzle of the at least one print head 212 is at least in the case of a print head 212 located in a printing position on a lateral surface of the at least one printing material guide element 201; 401
- the at least one first nozzle bar 213 preferably extends parallel to the transverse direction A and / or orthogonal to the longitudinal direction B and / or the transport path of the printing material 02 over the working width of the printing machine 01.
- the at least one supporting body 616 preferably extends; 636; 637; 638 parallel to the transverse direction A and / or orthogonal to the longitudinal direction B and / or the transport path of the printing material 02 over at least 80% and more preferably at least 100% of the working width of the printing press 01.
- the at least one nozzle bar 213 preferably has a plurality of nozzles , This plurality of nozzles is preferably arranged in the transverse direction A at regular intervals from one another and / or preferably has nozzle openings over the entire working width of the printing machine 01 and / or the first printing unit 200 at regular intervals. This plurality of nozzles is preferably distributed in the transverse direction A in such a way that ejection of coating material is made possible over the entire working width of the printing press 01 and / or of the first printing aggregate 200.
- a single continuous print head 212 is arranged, which extends in the transverse direction A over the entire working width of the printing press 01 and / or the first printing unit 200.
- a plurality of print heads 212 are arranged next to one another in the transverse direction A on the at least one nozzle bar 213 and in particular on the respective carrier body 616; 636; 637; 638 arranged. Since usually such individual print heads 212 are not provided with nozzles up to an edge of their housing, preferably at least two, and more preferably exactly two, rows extending in the transverse direction A are provided of print heads 212 in the transport direction T of the printing substrate 02 and / or in
- the plurality of nozzles is preferably not formed as a single linear juxtaposition of nozzles, but results in the sum of a plurality of individual, more preferably two, circumferentially offset from each other arranged juxtaposition of nozzles.
- a print head 212 has a plurality of nozzles, all target areas of the nozzles of this print head 212 together form a working area of this print head 212.
- Working areas of print heads 212 of a nozzle bar 213 and in particular a double row of print heads 212 adjoin one another and / or overlap one another viewed in the transverse direction A. seen in the transverse direction A. In this way, even when the print head 212 is not continuous in the transverse direction A, it is ensured that target areas of nozzles of the at least one nozzle bar 213 and / or, in particular, the respective one, are viewed in the transverse direction A at regular and preferably periodic intervals
- Double row of printheads 212 are.
- an entire working area of the at least one nozzle bar 213 preferably extends over at least 90% and more preferably 100% of the working width of the printing machine 01 and / or the entire width of the bale of the at least one first central cylinder 201 in the transverse direction A. Both sides with respect to the axial direction A, a narrow region of the printing substrate 02 and / or the bale of the first
- Central cylinder 201 may be present that does not belong to the working area of the nozzle bars 213.
- An entire working area of the at least one nozzle bar 213 is preferably from all work areas of print heads 212 of this at least one Nozzle bar 213 and is preferably from all target areas of nozzles of these printheads 212 of this at least one nozzle bar 213th
- an entire working area of a double row of print heads 212 in the axial direction A corresponds to the working area of the at least one nozzle bar 213.
- Substrate 02 and / or in the longitudinal direction B and / or circumferential direction with respect to the at least one first central cylinder 201 seen a plurality of rows of nozzles.
- each printhead 212 has a plurality of nozzles, which are further preferably arranged in a matrix of several lines substantially in the transverse direction A and / or multiple columns, preferably substantially in the transport direction T of the printing substrate 02 and / or in the longitudinal direction B and / or in FIG Circumferential direction of the at least one first central cylinder 201 are arranged.
- Such columns are more preferably inclined relative to this transport direction T or longitudinal direction B or
- Circumferentially arranged extending, for example, to increase an achievable resolution of a printed image.
- a direction orthogonal to the axial direction A in particular in the transport direction T along the transport path of the
- Substrate 02 and / or in the longitudinal direction B and / or in the circumferential direction relative to the at least one central cylinder 201 a plurality of rows of print heads 212, more preferably four double rows and even more preferably eight double rows of
- Printheads 212 arranged one after another. More preferably, at least in the printing operation in the circumferential direction with respect to the at least one first central cylinder 201 a plurality of rows of printheads 212, more preferably four double rows and still more preferably eight double rows of printheads 212 arranged successively aligned on the at least one first central cylinder 201.
- the print heads 212 are preferably aligned such that the nozzles of each print head 212 are substantially orthogonal to one another for substrate 02 provided transport path and / or in particular substantially in the radial direction of the cylinder surface of the at least one first
- Deviations from orthogonal directions within a tolerance range of preferably at most 10 ° and more preferably at most 5 ° should be considered as substantially orthogonal directions.
- 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 radial direction is a radial direction relative to the axis of rotation 207 of the at least one first central cylinder 201.
- Printheads 212 are preferably assigned and / or assigned to a printing ink of a specific color, for example one of the colors black, cyan, yellow and magenta or a lacquer, for example a clearcoat or a means for pretreating the printing substrate, for example a primer.
- the corresponding inkjet printing unit 21 1 is preferably designed as a four-color printing unit 21 1 and in particular allows a one-sided four-color printing of the printing substrate 02. It is also possible to print fewer or more different colors with a printing unit 21 1,
- printheads 212 and / or double rows of printheads 212 are arranged within this corresponding printing unit 21 1.
- the at least one print head 212 preferably operates to generate ink droplets by the drop-on-demand method, in which ink droplets are generated selectively as needed.
- at least one piezo element is used per nozzle
- An insert that can reduce high-speed ink filled volume 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 piezoelectric element is on the travel of the
- Rotation speed and / or the angular position of the at least one first central cylinder 201 is done as a function of a distance between the respective nozzle and the printing substrate 02 and the position of the Target area of the respective nozzle with respect to the intended transport path and / or the circumferential angle of the first central cylinder 201. This results in a
- desired print 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 print head 212 preferably takes place as a function of the rotational position, predetermined by the machine control, of at least one drive motor, for example the first drive motor 208.
- the machine control commands the respective, and in particular the first, drive motor 208 predetermined target data of the
- the rotational position of the respective drive motor 208 is preferably not necessary and preferably does not take place.
- An exact and constant position of the printing material 02 relative to that component which is driven by the corresponding drive motor that is to say in particular an exact and constant position of the printing substrate 02 relative to the at least one first central cylinder 201, is therefore suitable for a passport-conforming and / or register-compatible printed image great importance.
- an exact and constant position of the print heads relative to the transport path provided for the printing substrate 02 and in particular relative to the first central cylinder 201 is of great importance.
- the nozzles of the at least one print head 212 are preferably arranged such that a distance between the nozzles of the printing material web 02, in particular the printing material web 02 arranged on the cylinder jacket surface of the at least one first central cylinder 201, preferably between 0.5 mm and 5 mm and more preferably between 1 mm and 1, 5 mm.
- Angle of rotation sensor and / or the high accuracy of the machine control predetermined and processed by the first drive motor 208 of the first central cylinder 201 target data to the rotational position of the first drive motor 208 of the first
- Central cylinder 201 allows a very accurate position determination and / or knowledge of the position of the printing substrate 02 relative to the nozzles and their target areas.
- a drop flight time between the nozzles and the printing material web 02 is known, for example, by a teaching process and / or by the known distance between the nozzles and the printing material web 02 and a known drop speed. From the position of the printing substrate 02 and / or the angular position of the at least one first central cylinder 201 and / or the rotational angular position of the corresponding
- the Drive motor in particular of the first drive 208 of the at least one first central cylinder 201, the transport speed of the printing substrate 02 and / or the rotational speed of the at least one first central cylinder 201 and the drop flight time is an ideal time to eject a respective drop determined so that a passers-fair and / or register-compliant imaging of the printing substrate 02 is achieved.
- the goal is to place all print heads 212 in a fixed location. This ensures a permanent passport-oriented and / or register-oriented alignment of all nozzles. Different situations are conceivable in which a movement of the print heads 212 is necessary. A first such situation is a flying roll change or generally a roll change with gluing process. Essentially, a resulting bonding area is as thick as two
- Nozzle bar 213 is therefore movable in at least one setting direction and / or along at least one travel relative to the transport path provided for substrate 02 and / or relative to the axis of rotation 207 of the at least one first central cylinder 201. 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 Printheads 212.
- the printheads 212 are preferably individually attached to the at least one nozzle bar 213 and individually detachable from the at least one nozzle bar 213. This allows individual printheads 212 to be maintained and / or cleaned and / or replaced.
- a maintenance device 222 and / or cleaning device 222 and / or inspection device 222 to the nozzle surfaces of the printheads 212 can be adjusted.
- this is done by a corresponding positioning device 217; 218; 219; 221 used.
- Positioning device 217; 218; 219; 221 connected and / or connectable More preferably, the at least one print head 212 is permanently connected to the at least one positioning device 217; 218; 219; 221 connected and only for assembly and / or disassembly purposes and / or replacement of the at least one print head 212 of the at least one positioning device 217; 218; 219; 221 separable.
- the at least one printing unit 200; 400 at least two and more preferably at least four nozzle bars 213; 413, each at least two
- Printheads 212; 412 have.
- At least one of at least two printheads 212 is further preferably selectively locatable by means of a positioning device 217 assigned to it, at least either in a printing position assigned to it or in at least one rest position assigned to it arranged. More preferably, each of at least four printheads 212; 412 further preferably by means of a positioning device 217 assigned to it; 218; 219; 221 can be arranged either at least either in a printing position assigned to it or can be arranged in at least one rest position assigned to it.
- the at least one print head 212 is preferably in particular by means of the at least one
- Positioning device 217; 218; 219; 221 in at least one rest position and more preferably in at least two different rest positions can be arranged.
- the at least one rest position is formed, for example, as at least one maintenance position and / or as at least one mounting position.
- the at least one positioning device 217; 218, 219; 221 at least one linear, preferably designed as a rail 224 positioning guide 224 and more preferably several, in particular four preferably as rails 224th
- Nozzle bar 213 and / or per movable printhead 212 More preferably, each nozzle bar 213 two arranged as a rail 224 positioning guides 224 are arranged, in particular one rail 224 depending on the transverse direction A related end of the at least one Bedruckstoffleitelements 201; 401, so a total of at least eight rails 224 per printing unit 200; 400.
- the at least one positioning guide 224 is designed as at least one rail 224, the travel of the at least one print head 212; 412 and / or nozzle bar 213; 413 formed linear.
- a printing machine 01 the at least one printing unit 200; 400 having at least two, more preferably at least three, and even more preferably at least four printheads 212; 412 and preferably at least one around one
- Printing unit 200; 400 in all possible pairwise comparisons of at least 10 °, more preferably at least 15 ° and independent of the lower limit of at most 150 °, more preferably at most 120 °, even more preferably at most 90 ° and even more preferably at most 60 °.
- Positioning directions of printheads 212 preferably differ; 412, the adjacent positioning devices 217; 218, 219; 221 are at least 10 °, more preferably at least 15 ° and independent of the lower limit of at most 60 °, more preferably at most 45 °, even more preferably at most 30 ° and even more preferably at most 20 °. It is preferably ensured that movements of the at least one print head 212 and / or
- Nozzle bar 213 run only in a plane which is defined by a surface normal, which is arranged parallel to the transverse direction A, in particular in an axial projection plane.
- each of the at least two, preferably at least three, and more preferably at least four printheads 212; 412 by means of the respective positioning device 217; 218; 219; 221 can be arranged optionally at least either in a printing position assigned to it and at least one maintenance position assigned to it, wherein in the at least one maintenance position of a first print head 212; 412 the at least two, preferably at least three and more preferably at least four print heads 212; 412 at least one maintenance device 222 at least a first nozzle of the at least one first Printhead 212; 412 is assigned and / or can be assigned.
- the one described in the foregoing and hereinafter with regard to the at least one maintenance device 222 preferably applies to each maintenance device 222, in particular also in the case of two, three or four maintenance devices per printing unit 200; 400.
- Maintenance device 222 is preferably movably arranged along at least one provisioning path between at least one parking position and at least one insertion position, in particular by means of at least one feed device 223.
- each maintenance device 222 is preferably assigned its own provision path, its own parking position and its own deployment position.
- An optional component of the respective provision path of the at least one maintenance device 222 in a through the rotation axis 207; 407 of the at least one rotatable Bedruckstoffleitelements 201; 401 fixed axial direction A is preferably at most 50% of one in the axial direction A
- the at least one nozzle bar 213 is preferably completely independent of those components of the printing press 01 movable, the printing material 02 touching and / or the intended transport path of the printing material 02 are arranged tangentially. Thus, cleaning and / or maintenance can be carried out without affecting the printing material web 02 and in particular without having to remove the printing material web 02 from the printing press 01.
- the at least one nozzle bar 213 preferably has at least one first carrier body 616.
- An entirety of the nozzle bars 213 further preferably has a total of a plurality of carrier bodies 616; 636; 637; 638 on.
- each nozzle bar 213 exactly one support 616; 636; 637; 638 on.
- the respective support body 616; 636; 637; 638 preferably has at least one bottom segment 624, which, as described, preferably has respective printhead openings 626 and, in particular, several
- the at least one support body 616; 636; 637; 638 preferably at least one side strut 681, which extends for example at least in the adjustment direction and / or at least vertically and / or at least orthogonal to the transport direction T and / or at least radially to the axis of rotation 1 1 1 of the central cylinder 201.
- the at least one support body 616; 636; 637; 638 at least two such side struts 681, which are further preferably connected to each other via at least one transverse strut 682.
- Cross member 682 preferably extends at least horizontally and more preferably at least in the transverse direction A and / or at least partially and preferably completely parallel to the at least one respective bottom segment 624.
- the at least one support body 616; 636; 637; 638 is preferably via the at least one positioning guide 217, which is further preferably designed as a rail 224; 218; 219; 221 connected to the frame 283 of the printing unit 200 and even more preferably arranged relative to this frame 283 movable at least in the direction of adjustment.
- At least one temperature control device 641 is preferred; 642; 643; 644; 646; 647; 648; 649 on the at least one support body 616; 636; 637; 638 arranged.
- the at least one tempering device 641; 642; 643; 644; 646; 647; 648; For example, 649 serves to deflect the at least one support body 616; 636; 637; 638 controlled bring and / or maintain and / or unwanted
- a printing unit 200 Preference is given to a printing unit 200, the at least one transport direction T being defined by the printing unit 200 through a transport path provided for transporting printing material 02, and wherein the printing unit 200 has at least one first supporting body 616 on which at least one first image-forming device 212, in particular at least one print head 212 is arranged.
- the at least one first support body 616 preferably extends both in the transport direction T, in particular of the transport direction T at a location of the intended transport path next to this first support body 616, and in the transverse direction A oriented horizontally and orthogonal to the transport direction T.
- the printing unit 200 points preferably, the at least one particular first tempering device 641; 642 for selectively generating a temperature difference between a first point 651 of said at least one first support body 616 and a second point 652 of said at least one first support body 616 spaced from said first point 651 at least in the transport direction T.
- Deflection causes such parts of this component 616, in particular first support body 616, which are not arranged stationary relative to the frame 283, at least in and / or against the transport direction T deflected and / or relocated.
- the direction of the displacement is thereby determined from the direction of a connection between the first point 651 and the second point 652.
- two ends of the at least one component 616, in particular the first support body 616, and more preferably two each in the transverse direction are referred to the transverse direction A
- a related ends of the respective support body 616; 636; 637; 638 stationary relative to the frame 283 of the first printing unit 200 is arranged.
- Arrangement is at least during a printing operation and / or when the positioning device 217 is stopped; 218; 219; Given anyway and even during one Movement of the positioning device 217; 218; 219; 221 given at least in the way that the ends of the support body 616; 636; 637; 638 are held firmly while its central part is movable by bending. Occurs then by a temperature difference as described a bending of the respective support body 616; 636; 637; 638, then at least one respective relative to the transverse direction A middle part of the respective support body 616; 636; 637; 638 deflected in the direction of deflection, ie in the direction of the temperature difference. This direction preferably points in or against the transport direction T. In particular, a direction of the deflection of the deflection from a cooler side to a warmer side.
- Devices 212 learn due to a
- selecting temperature difference can thus be a targeted shift of
- Printheads 212 take place, for example in order to compensate for otherwise occurring registration errors and / or register errors, in particular without having to change activation times of corresponding printheads 212. This is possible in particular during a running printing operation.
- the printing unit 200 is characterized alternatively or additionally by the fact that the at least one first support body 616 extends in the transverse direction A over at least 80% and more preferably at least 100% of the working width of the printing unit 200 and / or that the at least one first temperature control device 641; 642 in the transverse direction A over at least 10%, more preferably at least 20% and still more preferably at least 50% of the working width of the printing unit 200 extends and / or that the at least one first temperature control device 641; 642 extends over at least twice the width of an imaging device 212, in particular formed as a print head 212, in the transverse direction A.
- the same preferably applies analogously to at least one second support body 636 and / or at least one temperature control device 643 arranged on the second support body 636; 644.
- the same applies preferably analogously for at least one third support body 637 and / or at least one arranged on the third support body 637 temperature control 646; 647.
- the same applies preferably analogously to at least one fourth support body 638 and / or at least one temperature control device 648 arranged on the fourth support body 638; 649th
- the printing unit 200 is characterized alternatively or additionally in that the at least one first image-forming device 212 is associated with a printing ink of a first color and the at least one second image-forming
- Device 212 is associated with an ink of a different color of the first color second color.
- the respective position and / or deflection of the respective support body 616; 636; 637; 638 measured.
- the printing unit 200 is characterized in that it has at least one first position sensor 673 for determining an at least on
- Transport direction T related relative position of a first, arranged on the first support body 616 reference point 661 to another reference point 663; 671 has.
- This further reference point 663; 671 is for example stationary relative to a frame 283 of the printing unit 200 and / or stationary relative to a second image-forming device 212 supporting second support body 636 of the printing unit 200 is arranged.
- this further reference point 671 stationary relative to the frame 283 arranged it is also referred to as the first reference fix point 671.
- a selection of discharge times of the nozzles of the at least one printhead 212 arranged on the first support body 616 is based on a correct position of this respective printhead 212 with respect to the transport direction T.
- a high-quality print image is thereby made possible.
- the at least one image-forming device 212 is preferred but not as described
- print head 212 in particular ink jet print head 212.
- this further reference point 663 is arranged stationarily relative to a second support body 636 of the printing unit 200 carrying at least one second image-forming device 212, it can be ensured that a selection of discharge times of the nozzles of the at least one print head 212 arranged on the first support body 616 and a choice of Discharge times of the nozzles of the at least one arranged on the second support body 636 printhead 212 based on a correct relative position these respective printheads 212 with respect to the transport direction T.
- the printing unit 200 is preferably characterized alternatively or additionally in that at least one first temperature control device 641 is arranged for the targeted introduction and / or removal of heat energy at the first location 651, in particular a first location 651 of the first support body 616.
- the printing unit 200 is characterized Preferably, as an alternative or in addition, at least one second tempering device 642, at least with respect to the transport direction T, is spaced from the first tempering device 641 for the targeted introduction and / or removal of heat energy at a second point 652 is arranged, in particular a second location 652 of the first support body 616th
- This at least one first temperature control device 641 and / or this at least one second temperature control device 642 is preferably arranged on the at least one first carrier body 616. This should also be understood that the
- the corresponding temperature control device 641; 642 is part of the respective support body 616.
- the tempering device may also be arranged at a distance and act on the carrier body 616 by means of a gas flow and / or radiation.
- the corresponding temperature control device 641; 642 arranged not only for the targeted introduction and / or removal of heat energy at the first point 651 and at the second point 652, but also for the targeted setting of a temperature at this first point 651 and / or second point 652.
- Temperature control 642 are preferably controlled separately. More preferably, however, a common control is provided.
- At least one in particular is first
- Supporting body 616; 636; 637; 638 in each case only a first tempering device 641; 643; 646; 648 arranged.
- This is preferably arranged such that with their help a relation to the transport direction T asymmetric temperature of the respective at least one, in particular first support body 616; 636; 637; 638 is achievable.
- the first support body 616 has a first temperature control device 641 only on a front boundary surface seen in the transport direction T. If this first tempering device 641 permits introduction and removal of heat energy, a targeted influencing of a corresponding deflection in two opposite directions can thus be realized, in particular in and opposite to the transport direction T.
- first supporting body 616; 636; 637; 638 preferably both at least one first temperature control device 641; 643; 646; 648 and at least one second temperature control device 642; 644; 647; 649 arranged.
- at least one first temperature control device 641 is arranged to act on and / or act upon the at least one first support body 616 and is at least a second one
- Tempering device 642 arranged on the at least one first support body 616 acting and / or acting arranged and this at least one first Temper michs worn 641 related to a transport direction T in front of the at least one second Temper michsr worn 642 on this first support body 616 acting and / or interact enabled arranged. More preferably, at least one first temperature-control device is provided on the at least one first support body 616
- At least one second temperature control device 642 is arranged at this at least one first support body 616 and this is at least a first tempering 641 related to a transport direction T in front of the at least one second Temper istsr worn 642 at this at least a first
- Support body 616 arranged. Even more preferably, at least one first temperature control device 641 on an in
- Transport direction T seen arranged front boundary surface and is at this at least one first support body 616 at least a second temperature control device
- the at least one first temperature control device 641 is preferably designed as at least one first heating device 641, in particular as at least one first heating wire 641.
- the at least one second tempering device 642 is preferably designed as at least one second heating device 642, in particular as at least one second heating wire 642.
- the at least one first temperature control device 641 is preferably designed as at least one first heating device 641, in particular as at least one first heating wire 641.
- Tempering device 641 at least one fluid line for at least one
- Tempering fluid and / or has the at least one first heater 641st at least one Peltier element.
- the at least one second tempering device 642 has at least one fluid line for at least one tempering fluid and / or the at least one second heating device 642 has at least one Peltier element.
- the at least one first heater 641st has the at least one first heater 641st at least one Peltier element.
- the at least one second tempering device 642 has at least one fluid line for at least one tempering fluid and / or the at least one second heating device 642 has at least one Peltier element.
- the at least one first first heater 641st has the at least one Peltier element.
- Tempering device 642 alternatively or additionally as at least one
- the respective temperature control device 641; 642; 643; 644; 646; 647; 648; 649 preferably extends over at least 10%, more preferably over at least 25%, even more preferably over at least 50% and even more preferably over at least 80% and even more preferably at least 100% of an extent of the respective support body 616; 636; 637; 638 in the transverse direction A.
- At least one control and / or regulating device 679 is preferred
- these at least one control and / or regulating device 679 are preferably arranged connected to the at least one first temperature control device 641 and / or connected to at least one first position sensor 673. More preferably, this is at least one control and / or regulating device 679 with further temperature control 642; 643; 644; 646; 647; 648; 649 and / or with further position sensors 674; 676; 677; 678 connected arranged. Even more preferably, this is at least one control and / or regulating device 679 with all
- the printing unit 200 is additionally or alternatively characterized in that the printing unit 200 has the at least one second support body 636 on which at least one second image-forming device 212 is arranged and that the printing unit 200 at least one further, in particular of the first
- Tempering device 641 different, for example, third Tempering device 643 for selectively generating a temperature difference between a first point 653 of this at least one second support body 636 and a spaced at least in the transport direction T of this first point 653 of at least one second support body 636 second location 654 of this at least one second support body 636.
- this second support body 636 can also be selectively influenced with respect to its bending.
- the second support body 636 is spaced apart from the first support body 616, at least with respect to the transport direction T, and / or the at least one second print head 212 is at least spaced from the at least one first print head 212 with respect to the transport direction T.
- at least one fourth temperature control device 644 is assigned to the second support body 636, which further preferably analogously to the first and / or the second
- Tempering device 641; 642 is formed.
- a concerted influencing of a bending of the first support body 616 and / or a bending of the second support body 636 takes place.
- the printing unit 200 is characterized, for example, by the fact that not only the printing unit 200 has at least one second support body 636 on which at least one second image-forming device 212 is arranged, but additionally in that the printing aggregate 200 has at least one first position sensor 673 for determining a relative position relative to the transport direction T of a first reference point 661 arranged at the first support body 616 to a first reference fixing point 671 and that the first reference fixing point 671 is arranged stationary relative to the frame 283 of the printing unit 200 and that the printing unit 200 at least one second position sensor 674 for determining a relative to at least the transport direction T relative position of a second, arranged on the first support body 616 reference point 662 to a third reference point 663 and that the third reference point 663 fixed to the z wide support body 636 of the printing unit 200 is arranged.
- a coordinated positioning of the first support body 616 relative to the second support body 636 and / or vice versa is preferably carried out. This can for example be done independently of a position relative to the frame 283 of the printing unit.
- the printing unit 200 is preferably characterized in that not only the printing unit 200 has at least one second support body 636 on which at least one second image-forming device 212 is arranged, but additionally in that the printing unit 200 at least one position sensor 674 for Determining a relative to at least the transport direction T relative position of, for example, second, arranged on the first support body 616
- Reference point 662 to an example third reference point 663 and that this example, third reference point 663 is arranged stationary to the second support body 636 of the printing unit 200.
- the printing unit 200 also has a third support body 637 and a fourth support body 638. At least one third print head 212 is preferably arranged on the third support body 637. At least a fourth printhead 212 is preferably arranged on the fourth support body 638.
- the third support body 637 at least with respect to the transport direction T of the second support body 636 and the first support body 616 spaced and / or the at least one third print head 212, at least with respect to the transport direction T of the at least one second print head 212 and of the at least a first printhead 212 spaced apart.
- the fourth support body 638 is spaced apart at least with respect to the transport direction T from the third support body 637 and the second support body 636 and the first support body 616 and / or the at least one fourth print head 212 at least with respect to the
- the third support body 637 is at least one in particular fifth
- Tempering device 646 and more preferably at least one particular sixth temperature control 647 assigns, which further preferably analogous to the first and / or the second temperature control device 641; 642 are formed. These preferably serve to selectively generate a temperature difference between a first location 656 of this at least one third support body 637 and a second location 657 of this at least one third support body 637 spaced from this first location 656 of this at least one third support body 637, at least in the transport direction T similarly to the first support body 616, this third support body 637 can also be selectively influenced with respect to its bending and / or its position relative to the second support body 636 and / or relative to the first support body 616.
- the fourth support body 638 is assigned at least one in particular seventh temperature control device 648 and more preferably at least one particular eighth temperature control device 649, which is further preferably analogous to the first and / or the second temperature control device 641; 642
- this fourth supporting body 638 can be influenced correspondingly specifically with respect to its bending and / or its position relative to the third supporting body 637 and / or relative to the second supporting body 636 and / or relative to the first supporting body 616.
- the printing unit 200 is preferably characterized in that the printing unit 200 in addition to the at least one first position sensor 673 and the at least one second position sensor 674 still at least a third
- Position sensor 676 for determining a relative to at least the transport direction T relative position of a fourth, arranged on the second support body 636 reference point 664 to a fifth reference point 666 and that the fifth reference point 666 is fixed to the third support body 637 of the printing unit 200 and that the printing unit 200 additionally has at least one fourth position sensor 677 for determining a relative position of a sixth relative to the transport direction T, arranged on the third supporting body 637
- Reference point has 669 to a second reference fix point 672 formed further reference point 672 and that the second reference fixed point 672 stationary relative to the frame 283 of the printing unit 200 is arranged.
- the printing unit 200 is preferably characterized by the fact that the printing unit 200 at least one position sensor 674 for determining a at least relative to the transport direction T relative position of a arranged on the first support body 616 reference point 662 to a stationary relative to the second support body 636 arranged further reference point 663 and that the printing unit 200 at least one position sensor 676 for
- the printing unit 200 additionally or alternatively has at least one first strain sensor, in particular for determining at least one extension of at least one reference section of at least the first supporting body 616.
- the at least one first strain sensor is arranged on the first support body 616.
- the at least one first strain sensor is designed, for example, as a first strain gauge.
- a determination of an extension of at least one reference section of at least the first support body 616 is preferably possible by means of the at least one first strain sensor. In this way, it is possible in particular to obtain data relating to a change in the extent of the corresponding reference section. For example, if the first support body 616 on only one in
- this heating causes a bending of the first supporting body 616, in particular because the heated side expands more strongly than one, in particular with respect to the transporting direction
- this inference is based on a calculated and / or empirically determined relationship between an extension of the reference section on the one hand and a corresponding bending of the first support body 616 and / or an effect on a printed printed image on the other.
- the information about the extent of the reference section therefore provides position information about a position of the at least one first, on the at least one first support body 616 arranged reference point 661 to at least one further reference point 663; 671 or is preferably uniquely linked at least with such a position information.
- At least two strain sensors are arranged on the at least one first support body 616, in particular for determining at least one respective extension of at least two reference sections of the first support body 616, wherein these at least two reference sections preferably on each other
- first strain sensor at the first location 651 of the at least one first support body 616 and / or at a distance of preferably at most 50 cm, more preferably at most 10 cm, even more preferably at most 5 cm and even more preferably at most 1 cm from the at least one second strain sensor at the second location 652 of the at least one first support body 616 and / or at a distance of preferably at most 50 cm, more preferably at most 20 cm, even more preferably at most 5 cm and even more preferably at most 1 cm from the second location 652 of the at least one first support body 616.
- the printing unit 200 is alternatively or additionally characterized in that the at least one image-forming device 212, regardless of the temperature of the supporting body 616; 636; 637; 638 and / or the temperature of each at the they carrying support body 616; 636; 637; 638 arranged tempering device 641; 642; 643; 644; 646; 647; 648; 649 stationary relative to the carrying support body 616; 636; 637; 638 is arranged.
- the printing unit 200 is characterized alternatively or additionally by the fact that on the respective support body 616; 636; 637; 638 are each a plurality of image-forming means 212 are arranged, the relative position, regardless of the temperature of the supporting body 616; 636; 637; 638 and / or the temperature of each supporting body 616 carrying it; 636; 637; 638 arranged tempering device 641; 642; 643; 644; 646; 647; 648; 649 is.
- a are on the respective support body 616; 636; 637; 638 each at least two, more preferably at least five and even more preferably at least ten first image-forming means 212 arranged, more preferably offset relative to each other with respect to the transverse direction A and / or arranged spaced.
- the printing unit 200 allows a preferred method of operating the
- Printing unit 200 which has at least the first support body 616 on which the at least one first image-forming device 212 is arranged, wherein provided by the provided for a transport of substrate 02 transport path through the
- Printing unit 200 the at least one transport direction T is fixed and wherein a position information about a position of the at least one first, arranged on the at least one first support body 616 reference point 661 to at least one further reference point 663; 671 is obtained from a measurement and wherein the at least one further reference point 663; 671 stationary relative to the frame 283 of
- Compressing unit 200 and / or stationary relative to the at least one second image-forming means 212 supporting the second support body 636 of the printing unit 200 is arranged. It is preferred depending at least from this
- Controlled and / or regulated operation of a tempering device 641; 642; 643; 644; 646; 647; 648; 649 is, for example, in the case of a heating wire and / or a Peltier element, a controlled and / or regulated power supply and / or in the case of a
- the controlled and / or regulated operation of the at least one first temperature control means 641 takes place as a function of at least this position information during a printing operation of the printing unit 200.
- At least at least at the first location 651 of this at least one first support body 616 alternatively or additionally, another temperature is set as desired at at least a second location 652 of this at least one first support body 616.
- this at least one first support body 616 is preferably also another one
- Temperature is set as at the at least one first point 651 of this at least one first support body 616.
- the position information about the position of the at least one first, arranged on the at least one first support body 616 reference point 661 relative to at least one further reference point 663; 671 is obtained, for example, from the information about the extent of the reference section and / or alternatively or additionally from a direct measurement of this position and / or from at least one register measurement of a printed image and / or from at least one temperature measurement at the at least one support body 616 and / or at least one measurement of an extension of at least one reference section of at least the first support body 616 won.
- To measure this at least one layer is preferably at least one position sensor 673; 674; 676; 677; 678 used, in particular at least one non-contact position sensor 673; 674; 676; 677; 678.
- position sensors 673; 674; 676; 677; 678 are optical sensors, in particular laser sensors, capacitive sensors, ultrasonic sensors and preferably eddy-current sensors.
- eddy current sensors have the advantage of being relatively insensitive to contamination.
- at least one strain sensor is used to determine position information, for example at least one strain sensor per support body 616 and preferably two strain sensors per support body 616. Examples of such strain sensors are strain gauges.
- the influencing and / or adjustment of at least the temperature takes place at the at least one first point 651 of the first support body 616 in the context of a control, in which the position information on the position of at least a first, arranged on the at least one first support body 616 reference point 661 to the at least one further reference point 663; 671 received.
- the control is a position control with respect to the position of the first reference point 661 relative to a position of the first, fixed reference to the frame 283 arranged reference fixed point 671st
- the control is a position control with respect to the position of the
- 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 group 21.
- the at least one first print image sensor is designed, for example, as a first line camera or as a first area 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.
- a layer of pixels formed by ink drops originating from a respective first print head 212 is preferably compared to a layer of pixels formed by ink droplets emerging from a respective second, in the transport direction T of the printing substrate 02 and / or originate in the longitudinal direction B and / or in the circumferential direction of the at least one first central cylinder 201 lying after the respective first printhead 212 printhead 212. This is preferably done independently of whether these respectively first and second, in the corresponding direction successive and / or acting print heads 212 process a same or a different ink. For example, a tuning of the layers of the print images originating from different print heads 212 is monitored. For the same printing inks, for example, register-based joining of sub-images is monitored. With different inks, for example, 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.
- At least one result of an evaluation of data originating from the at least one print image sensor is used, at least one
- Tempering device 641; 642; 643; 644; 646; 647; 648; 649 to control and / or to regulate.
- a coordinated relative position of the support body 616; 636; 637; 638 and arranged thereon the printheads 212 wherein directly the quality generated in the control and / or regulation temperature control 641; 642; 643; 644; 646; 647; 648; 649 arrives.
- the method is characterized alternatively or additionally by the fact that before recording a printing operation by means of the respective at least one
- Tempering device 641; 642; 643; 644; 646; 647; 648; 649 a heating of the respective support body 616; 636; 637; 638 is made.
- conditions can be created that are similar or identical to those that set during a longer printing operation. This can be synonymous with short
- Print jobs are printed in high quality.
- the printing machine 01 preferably has at least one supply system for
- Coating agent in particular at least one ink supply system.
- a plurality of print heads 212 for example a plurality of print heads 212 of a common nozzle bar 213, in particular several or more preferably all print heads 212 each of a double row of print heads 212, a common supply system for coating agent.
- the at least one supply system and in particular the common supply system for coating agent preferably has at least one normal supply 252, in particular at least one Normal stock 252 for coating agents.
- the at least one normal reserve 252 for example, in each case at least one preferably designed as a color line
- each of at least two print heads 212 is preferably connected and / or connectable, in each case directly, to the at least one normal store 252 via at least one first liquid line.
- the respective first fluid line can be, for example, a flexible line, in particular at least one tube.
- the at least one normal supply 252 is via a supply line and a discharge directly or via
- intermediate components 295 such as at least one
- Return accumulator 295 connected to at least one buffer for the at least one coating agent and / or arranged connectable.
- the at least one printing unit 200; 400 a plurality of normal stocks 252 on, more preferably at least one normal stock 252 per printing ink to be printed, for example, four normal stocks 252.
- printheads 212 which are assigned to different inks below
- Fluid columns for relevant hydrostatic pressures result. This is particularly preferred when printheads 212; 412, for example, by means of corresponding positioning devices 217; 218; 219; 221 are arranged movable relative to each other, for example in different positions such as printing positions and / or
- the respective printing unit 200; 400 each one return accumulator 295 per jet beacons 213 and / or per positioning device 217; 218; 219; 221, which is at least indirectly connected to four normal stocks 252.
- the at least one normal supply 252 is common with the at least one Printhead 212; 412 and / or the at least one nozzle bar 213; 413 by means of a corresponding positioning device 217; 218; 219; 221 arranged movably and / or is at least one return supply 295 together with the at least one
- Positioning device 217; 218; 219; 221 arranged movably.
- constant conditions of hydrostatic pressures are ensured, for example within the at least one normal supply 252 and / or within the at least one print head 212; 412th
- the printing material web 02 is transported further along its transport path and preferably fed to the at least one first dryer 301 of the at least one dryer unit 300.
- the first, of the at least one first printing unit 200 printed side of the printing substrate 02 between a last contact of the printing substrate 02 with the at least one first central cylinder 201 of the at least one first printing unit 200 and a Einwirk Scheme the at least one first dryer 301 with no part of Roller printing machine 01 in contact.
- the at least one first dryer 301 is preferably as a radiation dryer 301, in particular infrared radiation dryer 301 and / or UV radiation dryer 301 and / or as a flow dryer 301, in particular
- the at least one first dryer 301 preferably has at least one radiation source 302, which is preferably designed as an infrared radiation source 302.
- at least one first cooling device 303 is preferably arranged in the transport direction T of the printing material web 02 after the action region of the at least one radiation source 302 of the at least one first dryer 301.
- the at least one first cooling device 303 preferably has at least one first cooling roller 304 and preferably a first, at least one first cooling roller 304 engagable and / or employeedewalzenpresseur 306 and preferably at least one, at least one first cooling roller 304 engageable and / or employed Anlenkwalze 307; 308 up.
- At least one second printing unit 400 is preferably arranged along the transport path of the printing material web 02 after the at least one first cooling device 303.
- at least one second printing unit 400 is preferably arranged 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
- Compressing unit 200 at least a second Brukantenausrichter arranged.
- the at least one second printing unit 400 is preferably analogous to the first
- the second printing unit 400 has a second central pressure cylinder 401 or, for short, a central cylinder 401
- the transport path of the printing material web 02 through the at least one second printing unit 400 runs analogously to the transport path through the at least one first printing unit 200.
- the belt wraps around
- Substrate web 02 prefers a part of a second deflecting roller 403 and is deflected by the latter in such a way that the transport path of the printing material web 02 in the second intermediate space 404 is both tangential to the second deflecting roller 403 and tangential to the second central cylinder 401.
- at least one cylinder 406 designed as a second impression roller 406 is arranged in the second printing unit 400.
- the second impression roller 406 is preferably constructed and arranged analogously to the first impression roller 206, in particular with regard to its mobility and a second impression gap 409.
- the second central cylinder 401 is preferably analogous to the first 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, the rotational angle of the second drive motor 408 and / or the second central cylinder 401 itself measuring and / or measurable and to the higher-level machine control is designed to send and / or send.
- At least one second printing unit 41 1 designed as an ink-jet printing unit 41 1 is preferably arranged.
- the at least one second printing unit 41 1 of the at least one second printing unit 400 is preferably constructed analogously to the at least one first printing unit 21 1 of the at least one first printing aggregate 200, in particular with respect to at least one nozzle bar 413, at least one, designed as a printhead 412, in particular inkjet printhead 412 image forming device 412 and its arrangement in double rows, the arrangement, alignment and control of the nozzles and the mobility and adjustability of the at least one nozzle bar 413 and the at least one
- Printhead 412 means at least one adjustment mechanism with corresponding
- At least one second dryer 331 of the at least one dryer unit 300 is arranged after the at least one second printing unit 400.
- the at least one second dryer 331 is preferably constructed analogously to the at least one first dryer 301.
- the at least one second dryer 331 preferably has at least one second cooling roller 334.
- the at least one second dryer 331 is constructed essentially and more preferably completely symmetrically relative to the at least one first dryer 301 with respect to the described components.
- the at least one first dryer 301 and the at least one second dryer 331 are preferred
- Components of the at least one dryer unit 300 are therefore preferably the at least one first dryer 301 and the at least one second dryer 331 preferably between the at least a first printing unit 200 and the at least one second
- Compressor 400 arranged.
- the at least one pull-out roller 501 preferably has its own drive motor 504 designed as a pull-out roller drive 504.
- at least one post-processing device 500 is arranged, preferably as
- Folding device 500 is formed and / or a sheet cutter 500 and / or a chart display 500 has or is designed as a winding device 500.
- At least within a printing unit 200; 400 of the printing machine 01 at least temporarily at least one along at least one Einziehwegs movable Einziehsch for drawing a printing substrate 02 and / or along at least one intended transport path of the printing substrate 02 movable Einziehstoff arranged for drawing a printing substrate 02 and / or arranged.
- At least one Einziehleitelement is preferably arranged, by means of which at least one Einziehweg the at least one retraction means can be fixed and / or fixed.
- the at least one Einziehleitelement is formed for example as at least one deflection roller.
- the at least one Einziehleitelement is alternatively formed as at least one chain rail. In particular, a chain rail can also have switches for the realization of different Einziehwege.
- the printing press 01 is designed as a rotary-type rotary inkjet printing machine 01 and is at least one
- substrate web substrate, paper web, textile web, film, plastic film, metal foil
- Printing material guiding element printing central cylinder, central cylinder, first printing material preparation device, web preparation device, coating device, corona device, discharge device, printing material cleaning device, web cleaning device,
- Printing unit printing unit, inkjet printing unit, four-color printing unit, first image-forming device, printhead, inkjet printhead, first nozzle bar, first
- Drying aids dryers, infrared radiation dryers, radiation dryers, flow dryers, UV radiation dryers, hot air dryers, first
- Image-forming device printhead, ink-jet printhead, second nozzle bar, second post-processing device, folding device, rewinder, sheet cutter, chart delivery
- Tempering device heating device, heating wire, second temperature control, third
- Temperature control device sixth temperature control, seventh temperature control, eighth
Landscapes
- Ink Jet (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015222622.0A DE102015222622A1 (de) | 2015-11-17 | 2015-11-17 | Druckaggregat und ein Verfahren zum Betreiben eines Druckaggregats |
| PCT/EP2016/077661 WO2017085040A1 (de) | 2015-11-17 | 2016-11-15 | Druckaggregat und ein verfahren zum betreiben eines druckaggregats |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3377327A1 true EP3377327A1 (de) | 2018-09-26 |
| EP3377327B1 EP3377327B1 (de) | 2022-01-26 |
Family
ID=57288449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16795082.3A Active EP3377327B1 (de) | 2015-11-17 | 2016-11-15 | Druckaggregat und ein verfahren zum betreiben eines druckaggregats |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10279607B2 (de) |
| EP (1) | EP3377327B1 (de) |
| CN (1) | CN108698414B (de) |
| DE (1) | DE102015222622A1 (de) |
| WO (1) | WO2017085040A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112319051B (zh) * | 2019-12-23 | 2022-03-01 | 广东聚华印刷显示技术有限公司 | 喷墨打印头机构、喷墨打印设备及墨滴出射角度校正方法 |
| CN112497932A (zh) * | 2020-11-28 | 2021-03-16 | 上海景定电子科技有限公司 | 一种提升圆柱体数码打印精度的方法 |
| CN115339244B (zh) * | 2022-07-22 | 2023-08-22 | 广州精陶机电设备有限公司 | 一种具有偏转角的打印喷头组件及打印装置 |
| CN115384187B (zh) * | 2022-08-02 | 2023-08-22 | 广州精陶机电设备有限公司 | 一种具有外置烘干的喷墨印刷系统 |
| EP4400314A1 (de) * | 2023-01-10 | 2024-07-17 | Bobst Bielefeld GmbH | Rotationsdruckmaschine mit reinigungseinheit und verfahren zur reinigung eines substrats |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980026295U (ko) * | 1996-11-08 | 1998-08-05 | 김광호 | 레이져 빔 프린터용 히트 로울러의 온도 분포 균일화 구조 |
| US7181572B2 (en) * | 2002-12-02 | 2007-02-20 | Silverbrook Research Pty Ltd | Cache updating method and apparatus |
| US6913341B2 (en) * | 2003-07-31 | 2005-07-05 | Hewlett-Packard Development Company, L.P. | Service station architecture and method for drum printer |
| DE102008001309B4 (de) * | 2008-02-11 | 2013-05-02 | Koenig & Bauer Aktiengesellschaft | Verfahren und Vorrichtung zum Steuern einer Druckmaschine |
| WO2012077736A1 (ja) * | 2010-12-10 | 2012-06-14 | コニカミノルタホールディングス株式会社 | インクジェット記録装置 |
| US8477165B2 (en) * | 2011-11-21 | 2013-07-02 | Electronics For Imaging, Inc. | Method and apparatus for thermal expansion based print head alignment |
| DE102013208751A1 (de) | 2013-05-13 | 2014-11-13 | Koenig & Bauer Aktiengesellschaft | Druckmaschine |
| US9925802B2 (en) * | 2016-02-15 | 2018-03-27 | Canon Kabushiki Kaisha | Ink jet recording apparatus |
-
2015
- 2015-11-17 DE DE102015222622.0A patent/DE102015222622A1/de not_active Withdrawn
-
2016
- 2016-11-15 WO PCT/EP2016/077661 patent/WO2017085040A1/de not_active Ceased
- 2016-11-15 EP EP16795082.3A patent/EP3377327B1/de active Active
- 2016-11-15 CN CN201680066754.4A patent/CN108698414B/zh active Active
- 2016-11-15 US US15/764,505 patent/US10279607B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20180361764A1 (en) | 2018-12-20 |
| DE102015222622A1 (de) | 2017-05-18 |
| US10279607B2 (en) | 2019-05-07 |
| EP3377327B1 (de) | 2022-01-26 |
| CN108698414A (zh) | 2018-10-23 |
| WO2017085040A1 (de) | 2017-05-26 |
| CN108698414B (zh) | 2020-10-23 |
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