EP3532297A1 - Vorrichtung und verfahren zum bedrucken eines bogenförmigen substrats - Google Patents
Vorrichtung und verfahren zum bedrucken eines bogenförmigen substratsInfo
- Publication number
- EP3532297A1 EP3532297A1 EP17788237.0A EP17788237A EP3532297A1 EP 3532297 A1 EP3532297 A1 EP 3532297A1 EP 17788237 A EP17788237 A EP 17788237A EP 3532297 A1 EP3532297 A1 EP 3532297A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- substrate
- guide roller
- roller
- printing
- along
- 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
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
- B41J13/22—Clamps or grippers
- B41J13/223—Clamps or grippers on rotatable drums
- B41J13/226—Clamps or grippers on rotatable drums using suction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
- B41F11/02—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination for securities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/02—Conveying or guiding webs through presses or machines
- B41F13/025—Registering devices
-
- 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
- B41J3/28—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes, envelopes, e.g. flat-bed ink-jet printers
- B41J3/283—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes, envelopes, e.g. flat-bed ink-jet printers on bank books or the like
-
- 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
- B41J3/60—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing on both faces of the printing material
-
- 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
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
Definitions
- the invention relates to an apparatus and a method for printing an arcuate substrate.
- a substrate is generally transported completely into a printing area of a printing device. Then, a first top surface is printed in which at least one print head is moved over the planar substrate. Furthermore, the substrate is transported out of the printing area, turned over and transported back into the printing area, in order then to print the further upper side.
- DE 10 2016 207 398 B3 discloses a machine arrangement for the sequential processing of a plurality of arcuate substrates each having a front side and a rear side.
- EP 3 016 365 A1 discloses an imaging device.
- EP 2 657 035 A1 discloses a digital printing device which prints on a sheet in an inkjet process.
- US 2009/0051747 A1 discloses an image capture device that generates an image on a recording medium.
- the present invention achieves this object by a device having the features of claim 1 and by a method having the features of claim 16.
- Device is suitable for printing an arcuate substrate.
- the substrate is in particular flexible so that it can be guided on a curved path, in particular on a circular path.
- the substrate may be a sheet of paper, e.g. from natural or synthetic paper, and in particular a plastic sheet, an already printed substrate or metal-plastic composite, e.g. a flexible aluminum-plastic composite panel act.
- the substrate may have a width of a range of 120 mm to 1200 mm, a length of a range of 300 mm to 1200 mm and a thickness of a range of 40 ⁇ to 300 ⁇ .
- the length can be measured here in the transport direction and the width transversely to the transport direction.
- the substrate comprises one or more strips each having a plurality of uses. These benefits may be after printing and optionally after
- Process steps are separated from the substrate, e.g. by punching. But it is also possible that the substrate forms a single use.
- the substrate may e.g. be made of several layers, which contribute to the formation of the
- a layer can e.g. be designed as a plastic film.
- the substrate itself or one of the layers can be provided with at least one position mark and / or a background image beforehand, for example by means of a print. This can be done for example by an offset printing.
- a print for example by an offset printing.
- an inkjet printing method can be used. However, other digital printing methods are applicable.
- the device may thus be an inkjet device or digital printing device.
- the device comprises at least one printing module.
- a printing module may preferably comprise one or more print heads.
- the print module can also be a print head array or a nozzle bar. These arrays or nozzle bars can be used, for example, in printing processes with continuous feed rate of the substrate.
- a printing module may also include a carriage on which one or more print heads are arranged.
- the device also has at least one first deflecting roller for transporting the substrate.
- the first guide roller serves to convey the substrate during, before and / or after printing. In particular, the first guide roller during
- the substrate can be guided by means of the deflection roller on or along a circular path or a circular segment path.
- the device comprises at least one feed device, wherein the substrate can be fed by means of the feed device of the first deflection roller.
- Feeding device can be an active or a passive feeding device. It may, for example, be a run-in table which has a suction device for sucking the substrate. Also, the feeder may be formed, for example, as a conveyor belt
- the at least one printing module is arranged such that a first side of the substrate, in particular its front or top side, can be printed in at least one section of the substrate.
- This section may e.g. be a useful portion of the substrate.
- the printing module or the printing modules are preferably arranged along a vertical direction over the first deflection roller or a further deflection roller of the device.
- a lateral direction may be perpendicular to the vertical direction and perpendicular to Be rotational axis of the first and / or another deflection roller oriented.
- a longitudinal axis or direction may be oriented parallel to the axis of rotation of the first and / or another guide roller.
- Vertical direction, the lateral direction and the longitudinal direction denote spatial directions.
- the aforementioned section is, for example, with the back or bottom, during printing on the first guide roller, in particular an externa lateral surface of the guide roller, or is arranged in a feed section of the first guide roller.
- the vertical direction may in this case denote a spatial direction which is oriented orthogonal to a Absteil Structure the device and / or parallel and opposite to the direction of a gravitational force.
- the substrate can be guided along a circular segment track, wherein the circular segment between the point of contact of the deflecting roller with the substrate and an output point of the first deflecting roller, e.g. to a further transport device, for example to an exit table or to another
- a mid-point angle of such a circle segment may be in a range of preferably from 1.6 to 4.9 rad and more preferably from 2.0 to 4.3 rad and most preferably from 3.3 to 4.1 rad.
- the supply may preferably be such that a portion of the substrate before contact with the first guide roller having an un-curved, planar surface. A portion of the substrate abutting the first deflecting roller has a curved surface. Substrate can be transported along the feed direction by means of the first deflection roller.
- the at least one printing module can therefore be arranged in such a way that the first side of the substrate can be printed in a section of the substrate which is at the first
- Deflection roller rests and thus has a curved surface.
- the print module comprises at least one inkjet printhead
- Print module be arranged such that an application direction of ink drops from the print head is oriented to the center of the circular segment path.
- the application direction is preferably oriented in the direction of a gravitational force or has at least one portion oriented in the direction of the gravitational force.
- the device comprises at least one control and evaluation device. By means of the control and evaluation device, a spatial position of the substrate can be determined, in particular before or during the supply to the first
- a positioning device in particular for the printing module, can be controlled as a function of the spatial position. Furthermore, the positioning device for the printing module can be controlled such that it can be printed by this desired regions of the substrate. This minimizes the risk of misprinting.
- a spatial position here denotes a spatial position and / or a spatial orientation of the substrate, in particular in a reference coordinate system.
- the reference coordinate system can comprise, for example, as axes a z-axis, which is parallel to the explained vertical direction and opposite to an acting one
- the reference coordinate system may include a y-axis oriented parallel to the lateral direction explained. Further, the reference coordinate system may include an x-axis oriented parallel to the explained longitudinal direction.
- the control and evaluation device may in particular be designed as a microcontroller or comprise such a microcontroller.
- control and evaluation device evaluates output signals from at least one sensor, wherein the sensor
- Device may include at least one such sensor.
- a sensor can, as explained in more detail below, be designed as an image capture device. Of course, however, a sensor can be used which is not an image capture device.
- the device may comprise at least one positioning device.
- the at least one positioning device and the at least one pressure module can in this case be connected to one another in such a way, in particular mechanically, that the
- the spatial position of the printing module can be changed by the positioning device, in particular being adjustable to a desired spatial position.
- the spatial position of several, in particular all, pressure modules can be changed by a single positioning device be.
- the device can comprise a plurality of positioning devices, in particular a positioning device per printing module, wherein the spatial position of a printing module can be changed by a positioning device.
- a positioning device may comprise a movable part.
- Positioning device for example, a translational movement and / or a rotational movement of at least one pressure module can be performed.
- a positioning device may comprise, for example, a device for generating drive energy.
- a positioning device may be designed as a linear drive device.
- control and evaluation device can control the positioning device such that the spatial position of the pressure module is set to a desired spatial position.
- the desired spatial position can in particular be determined such that one or more desired area (s) of the substrate can be printed by the printing module.
- the control and evaluation device can generate corresponding output signals for the at least one positioning device.
- control and evaluation device and the at least one positioning device can be connected in this case signal and / or data technology. Also, the preceding explained at least one sensor signal and / or data technology can be connected to the control and evaluation.
- the substrate is at a contact point on the
- Fixable surface of the first guide roller wherein the fixation is releasable in the output point, wherein the fixed substrate is transported or conveyed between the contact point and the output point by the first guide roller along a circular segment path.
- the contact point and the output point of the first guide roller are arranged stationary relative to a rotational axis of the first guide roller. This can mean in that the points are stationary in a global reference coordinate system relative to which the first guide roller rotates.
- Slipping on the surface of the first guide roller are fixed, in particular such that the guide roller, the arcuate substrate on a circular path,
- the device comprises at least one device for drying a printing material, wherein the device for drying in the transport direction or feed direction of the substrate is arranged behind the at least one printing module.
- the device for drying in the transport direction or feed direction of the substrate is arranged behind the at least one printing module.
- the device comprises at least one
- Positioning device for the at least one printing module wherein the printing module by means of the positioning device is movable transversely to the feed direction of the substrate.
- a print head of the print module can be moved transversely to the transport direction.
- the device comprises at least one further deflecting roller, wherein the substrate can be transported from the first deflecting roller to the further deflecting roller.
- the substrate may be replaced by the first
- Guide roller to be transported from a contact point of the substrate with the first guide roller to a first transfer point along a first circular path segment, wherein a contact of the substrate takes place with the further guide roller in the first transfer point. Further, the substrate by the further guide roller from the contact point of the substrate with the further guide roller to another
- the further deflection roller can advantageously enable optimal feeding of the substrate to a further print head.
- the first and further deflection rollers are preferably rotatable in opposite directions and transfer the substrate at a transfer point and / or transfer section.
- a rotation axis of the further deflection roller may be arranged in the vertical direction below or above the axis of rotation of the first deflection roller.
- the first and the further guide rollers may touch each other in at least the transfer point or section.
- a minimum distance of the deflection rollers, in particular in the transfer point correspond to the substrate thickness.
- the substrate thickness is the thickness of the substrate, e.g. the paper thickness of a paper sheet.
- the substrate may be fixable in the contact point with the further deflection roller on the surface of the further deflection roller, wherein the fixation in a
- Issuing point is releasable, wherein the fixed substrate between the contact point and the other output point through the further guide roller along the other
- Issuing point can be arranged stationary relative to the axis of rotation of the further guide roller.
- the contact point and the further starting point can also be arranged to be movable relative to the axis of rotation of the further deflection roller, wherein a maximum distance of movement can correspond to a thickness of the substrate.
- the device comprises at least one further printing module, which is arranged such that a further side of the substrate, in particular its rear or underside, can be printed in a section of the substrate, the section, in particular a front side of the section, on the second guide roller rests or is arranged in an output section.
- the discharge section may designate a spatial area disposed above or below the first guide roller, along the lateral direction from an edge of the first guide roller to an edge of the second guide roller and along a longitudinal direction parallel to the axis of rotation of the second
- Deflection roller extends.
- the at least one further printing module can therefore be arranged such that the further side of the substrate can be printed in a section of the substrate which rests against the further deflection roller and thus has a curved surface.
- the further printing module can be arranged such that an application direction of ink droplets from the printhead is oriented toward the center of the circular segment web, along which the substrate is conveyed by means of the further deflecting roller.
- this application direction is oriented in the direction of a gravitational force or has at least one oriented in the direction of the gravitational force share.
- this is not mandatory.
- Deflection roller and / or the feeding device can be controlled by the control and evaluation device as a function of the spatial position is / are.
- a movement of the deflection rollers and the feed device can be controlled such that different portions of the substrate are conveyed at the same conveying speed.
- the device comprises at least one
- Image capture device wherein the image capture device is arranged such that at least a portion of the first page is imaged by the image capture device.
- the image capture device can be signal and / or data technology connected to the control and evaluation.
- an image-based determination of the spatial position by the control and evaluation device can take place as a function of the image data generated by the image capture device. For this purpose can For example, a position mark of the substrate image-based detected and a
- Space position of the position mark can be determined in a reference coordinate system. Furthermore, the spatial position of the position marker relative to the substrate may be previously known. Then, depending on the spatial position of the position mark, a spatial position of the substrate can be determined. This advantageously allows a reliable and accurate determination of the spatial position.
- the device comprises at least one
- This section can also be referred to as a fastening section.
- This can e.g. a mechanical means, e.g. a counter-pressure roller or a clamp. As a result, the substrate is fixed on the surface of the respective guide roller.
- the fastening means may be arranged and / or formed in such a way that the substrate is fastened to the respective deflection roller only in a partial section of the surface, while in the remaining partial section the substrate is not fastened to the surface. This remaining portion can also be called dead zone, since the guide roller on this section can not be covered with substrate.
- the substrate can be fastened to different sections of the surface in each rotation state.
- the attachment portion and the dead zone can be arranged stationary relative to the axis of rotation, while the surface of the guide roller rotates.
- the substrate can not be fixed on a further subsection of the surface of the first and / or on a further subsection of the surface of the further deflection roller.
- the device comprises at least one device for generating a negative pressure in the at least one subsection of the surface of the first and / or at least one device for generating a negative pressure in the at least one subsection of the surface of the second deflecting roller.
- the Device can in this case be arranged and / or formed such that the substrate is sucked by the generated negative pressure on the surface of the corresponding guide roller. This possibility of fixation is very material-friendly. Kinks are advantageously avoided and superficial contamination of the substrate can be sucked off.
- a guide roller may be formed as a hollow cylinder.
- the device comprises at least one first covering device for closing holes of the first deflecting roller, which are arranged in a partial section of the surface.
- This first covering device can advantageously serve to produce a dead zone in the region of the surface of the first deflecting roller.
- the device comprises a further covering device for closing holes of the further deflection roller, which are arranged in a partial section of the surface.
- This further covering device can advantageously produce a further dead zone in the region of the surface of the other
- the covering devices can each be arranged stationarily relative to the axes of rotation.
- the covering device can be designed, for example, as a curved plate and arranged in the inner volume of a hollow cylindrical deflecting roller.
- the first and / or second covering device can be arranged in a stationary manner relative to the axis of rotation of the respective deflecting roller. In this case covers the cover during rotation of the respective guide roller holes of different sections of the guide roller, whereby the provision of a negative pressure is interrupted by these holes.
- the surface of the first and / or the surface of the second guide roller has an adhesive layer and / or a rubber coating. The adhesive layer and / or the rubber coating serve to fasten the substrate and to reliably transmit drive forces.
- the adhesive layer may be configured such that the adhesive material or the
- the device may further comprise at least one means for adjusting a
- Roller temperature of one or both deflection roller (s), in particular a temperature of an outer circumferential surface / surface comprise.
- a device may comprise, for example, a device for generating thermal energy and optionally a device for transmitting thermal energy.
- a roller temperature in particular the temperature of the outer surface ß réelle / surface of the roller can be adjusted to a desired temperature, in particular to a different temperature from a room temperature. This allows drying of a coating medium, in particular of ink, on the
- the apparatus may further comprise at least one means for adjusting a temperature of a fastener for securing the substrate to the surface of a deflecting roller.
- a temperature of a fastening means in particular a substrate contact portion of the fastening means, to a desired
- Temperature are set, in particular to a temperature different from a room temperature. As a result, a drying of a coating medium, in particular of ink, on the substrate, which by the fastening means on the Surface of the guide roller is attached, effected or supported.
- the method can be carried out by means of a device according to one of the embodiments described in this disclosure.
- the device is also designed such that a method according to one of the embodiments described in this disclosure by means of the device is feasible.
- a spatial position of the substrate is determined, wherein a positioning device for the at least one printing module is controlled in dependence on the spatial position.
- a positioning device for the at least one printing module is controlled in dependence on the spatial position.
- an image-based determination of the spatial position can take place, more particularly depending on image data.
- another side of the substrate is in a
- Print portion of the substrate wherein the portion abuts a further deflection roller or is arranged in an output section of the device.
- Output section may be arranged in the vertical direction below the first guide roller or over the first guide roller.
- the substrate is transported by means of the first deflection roller along a circular segment track, wherein the along the circle segment track on the first guide roller abutting portion of the substrate is attached to a surface of the first guide roller.
- the substrate can be attached to the surface of the guide roller, wherein the attachment is released at the end of the circular segment path.
- the beginning may be given for example by the contact point of the substrate with the first guide roller.
- the end may for example be given by the output point of the first guide roller.
- Conveyor roller transported along a further circular segment path, wherein the along the other circular segment path adjacent to the further guide roller portion of the substrate is attached to the surface of the further guide roller.
- Fig. 1 is a schematic representation of an embodiment of a
- Fig. 2 is a schematic representation of another embodiment of a device according to the invention.
- Fig. 3 is a schematic representation of another embodiment of a device according to the invention.
- an embodiment of an inventive device 1 is shown as an inkjet printing device.
- the solution according to the invention is also applicable to other printing devices.
- a so-called benefit can be printed on a substrate 2.
- a substrate 2 may be both a paper sheet, for example made of natural or synthetic paper, and in particular a plastic sheet, an already printed substrate or metal-plastic composite, such as an aluminum-plastic composite panel.
- the substrate 2 may be a flexible, a pliable and / or a flexible substrate 2.
- the substrate 2 may have a thickness in the range of 40 ⁇ to 300 ⁇ .
- the printing apparatus in Fig. 1 comprises as feeding a run-in table 15 for depositing a substrate 2.
- This substrate 2 is first fed in a feed direction R along a straight path of a first guide roller 6 and guided by this on a first curved circular path segment.
- a deflection takes place with a change in direction, wherein the substrate 2 is supplied in the transfer point 16 of a second guide roller 1 1 and is guided by this on a second curved circular path segment.
- the substrate 2 is separated from the second
- Circular path segment is guided on an execution device designed as a run-off table 14, on which the substrate 2 is then guided along a straight path.
- the device comprises the first guide roller 6 and the second guide roller 1 1.
- the guide rollers 6, 1 1 may preferably have a cylindrical outer surface. These guide rollers 6, 1 1 are used for handling and / or everting the substrate 2. From the printing technique, the terms of turning, everting and turning are known. Both the folding and the everting leads to a turning of the substrate 2, so that both the front and back of the substrate 2 can be printed with the same application direction.
- the application direction is determined by the positioning of the respective printing modules of a corresponding device.
- the outlet table 14 may be flat at least in a partial area and defines an outlet plane which may be oriented orthogonal to a vertical direction z.
- the device 1 according to the invention takes place.
- the outlet level in turn defines an output section.
- the outlet plane can in this case be arranged at different heights along the vertical direction. If the second deflecting roller 1 1 is arranged below and in the lateral direction next to the first deflecting roller 6 in the vertical direction, the outflow plane can also be arranged vertically below the first deflecting roller 6. In this case, the
- Output section indicate a spatial area, which is below the first
- Guide roller 6 is arranged, extending along the lateral direction from an edge of the first guide roller 6 to an edge of the second guide roller 1 1 and along a longitudinal direction parallel to the axis of rotation of the second guide roller 1 1.
- the feed section can designate a spatial area which is arranged above the second deflecting roller 11, along the lateral direction from an edge of the first deflecting roller 6 to an edge of the second deflecting roller 11 and along a longitudinal direction parallel to the axis of rotation of the first deflecting roller 1 1 extends.
- the output section can also be arranged in the vertical direction over the first deflecting roller 6.
- Output section indicate a spatial area that is above the first
- Guide roller 6 is arranged, extending along the lateral direction from an edge of the first guide roller 6 to an edge of the second guide roller 1 1 and along a longitudinal direction parallel to the axis of rotation of the second guide roller 1 1.
- the feed section can designate a spatial area which is arranged below the second deflecting roller 6, along the lateral direction from an edge of the first deflecting roller 6 to an edge of the second deflecting roller 11 and along a longitudinal direction parallel to the axis of rotation of the first deflecting roller 1 1 extends.
- this outlet level is below the first
- Guide roller 6 is arranged.
- the substrate 2 for example, approximately in a semicircle about the second guide roller 1 first
- the present apparatus of FIG. 1 has a total of four printing modules 3, 4, 5, 10.
- the term pressure module within the meaning of the present invention includes in addition Single printheads among other things printhead arrays, offset linearly or obliquely, with several individual printheads and / or nozzle bars.
- Individual printing modules or multiple printing modules 3-5, 10 may be arranged as one or more print heads on a carriage, which is preferably movable above the front side of the substrate 2 and perpendicular to the feed direction R.
- the printheads can be fixed. This is particularly advantageous for printing with a continuous feed.
- a multi-color print can be applied to the substrate 2.
- at least one application medium preferably ink, including UV ink, primer, lacquer, including UV lacquer, or the like, can be applied to the substrate 2.
- the printing module in CMYK colors and / or RGB colors corresponding storage rooms.
- a UV ink or a UV varnish may be a UV-crosslinking ink or varnish.
- Inks and / or paints may also be oxidatively drying inks. These may e.g. as solvent water, organic solvents or oils include.
- an inlet table level or a substrate plane of the substrate 2 is defined before deflecting onto the first circular path.
- the printing modules 3-5 are preferably arranged such that the delivery of one or more application media takes place perpendicular to the substrate plane or to the inlet table plane.
- one or more application media to be applied to the substrate 2 in a region in which a deflection of the substrate 2 onto the circular arc has already taken place. This allows a more individual arrangement of the printing modules 3-5, 10 are made possible within the device 1.
- the drying device 9 can be configured, for example, as an air drying device.
- the drying can be done with hot air in a temperature range of 30 ' ⁇ to 80 ° C, preferably in the temperature range of 30 ° C to 55 ° C.
- temperatures of the guide rollers 6, 1 1 and / or a counter-roller 7 can be set in a range of 30 ° C to 80 ° C.
- the drying device may be formed as a UV illumination source, e.g. as a UV lamp or as a UV LED.
- a UV illumination source e.g. as a UV lamp or as a UV LED.
- Guide roller 6 to the transfer point 16 to the second guide roller 1 1 is preferably between 1, 6 to 4.9 rad and more preferably between 2.0 to 4.3 rad and most preferably between 3.3 to 4.1 rad.
- Guide roller 6 to the transfer point 16 to the second guide roller 1 1 is preferably between 1, 6 to 4.9 rad and more preferably between 2.0 to 4.3 rad and most preferably between 3.3 to 4.1 rad.
- Circular path segment is the substrate 2 in contact with the surface of the first
- a mid-point angle of this second circular path segment from the transfer point 16, which may designate a contact point of the substrate 2 with the second deflecting roller 6, to an exit point 18, at which the substrate 2 is transferred to a preferably flat discharge table 14, is preferably between 0.3 - 2.6 rad, and more preferably between 0.5 and 2.0 rad.
- the center angle of the second circular path segment depending on an available space and / or the space requirement of
- Print modules and / or a desired outlet direction can be selected.
- the desired outlet direction can be selected depending on a desired removal direction.
- the substrate 2 is in contact with the surface of the second guide roller 1 1 and mechanically at this attached. By a rotation of the second guide roller 1 1, the substrate 2 is conveyed along the second circular path segment.
- this fixation is achieved by two different means, with one of the means may already allow sufficient fixation.
- the substrate 2 is guided by one or more counter-roller (s) 7 on the circular path segment defined by the first deflecting roller 6.
- Fig. 1 only one counter-roller 7 is shown.
- a roller guide can also be selected for the guidance of the substrate along the second guide roller 1 1. This can be done in particular when the pressure of the second side or the back of the substrate 2 takes place only in the region of the outlet table 14, so that the counter-rollers of the roller guide do not pollute.
- the counter-roller 7 is only an additional guide of the substrate 2.
- the counter-roller can preferably with a distance between 50% and 200% of
- Substrate height of the first guide roller 6 may be arranged spaced.
- Counter roller 7 may preferably be an elastic material and in particular a
- the substrate 2 can be pressed by a counter roller 7 to the guide roller 6 with a pressure in the range of 10 to 100 Pa.
- the counter-roller 7 can be pressed by spring force against the substrate 2, for example.
- the deflecting rollers 6, 1 1 shown in FIG. 1 moreover have one or more suction openings (s) through which a negative pressure in the region of the surface of the deflecting roller 6, 11 can be provided. Due to the negative pressure, the substrate 2 on the surface of the respective guide roller 6, 1 1 are attached.
- the negative pressure within the guide roller 6, 1 1, which may also be referred to as residual pressure, may preferably be between 200 to 980 hPa, preferably between 700 and 900 hPa. In this case, a negative pressure within the second guide roller 1 1 may be higher than the negative pressure in the first guide roller 6 in order to facilitate a transfer.
- the suction openings may be, for example, the pores of a porous material.
- the guide roller 6, 1 1 may also be formed as a perforated roller, preferably with a plurality of holes.
- the entirety of the holes and / or pores through which the substrate 2 is sucked define a hole area opposite to a closed area.
- the ratio of the hole area to the closed area may preferably be in the range of 10% to 20% for the first deflection roller 6.
- Maximum diameter of a hole may be, for example, 2 mm. Preferably, however, the diameter of a hole is less than 2 mm.
- Diameters are advantageously minimized temperature differences between the substrate 2 and roller 6, 1 1, unevenness of the roll surfaces and a suction of a coating medium through the substrate 2.
- the guide rollers 6, 1 1 may be formed as hollow cylindrical rollers with a perforated and / or porous jacket surface. In the inner volume of the hollow cylindrical deflection roller 6, 1 1 then a negative pressure can be generated.
- a cover device in the form of a curved cover plate 19, 20 can be arranged in the inner volume of the hollow cylindrical deflecting roller 6, 11. This is arranged stationary and closes a part of the holes of the lateral surface, so that through these holes no negative pressure in the region of the surface of the guide roller 6, 1 1 can be provided. Rotates the guide roller 6, 1 1 for conveying the substrate 2, so are by the stationary arranged cover 19, 20 in each
- the guide rollers 6, 1 1 thus each have suction regions in which the substrate 2 is sucked to the respective surface, and dead zones 8, 12, in which no
- a suction region may, for example, denote a region in which a negative pressure in the region of the surface of the deflection roller 6, 11 can be provided by the holes.
- the holes can not be closed by the cover plates 19, 20.
- a dead zone 8, 12 may denote a region in which no holes exist through the holes Vacuum in the region of the surface of the guide roller 6, 1 1 can be provided.
- the holes may be closed by the cover plates 19, 20.
- the suction area is thus the area which is not covered by the covering device 20, 21. Due to a prevailing in the respective deflection roller air is sucked through the holes, whereby the substrate 2 remains fixed to the surface of the guide roller 6, 1 1 along this suction.
- Suction openings is merely a particularly preferred embodiment variant of the fixation of a printed substrate on a guide roller 6, 1 1 for the purpose of turning over or everting the substrate 2.
- Fix istssection of FIG. 1 can be selected.
- the deflecting roller 6 has an adhesive layer, so that the substrate 2 adheres to the adhesive layer at least in a central segment and on the
- Circle segment can be carried.
- the adhesive layer forms only weak adhesive forces relative to the substrate 2, so that a permanent adhesion is avoided.
- a separating element e.g. a wedge-shaped strip, be provided, which in the case of continuous movement deflection roller 6, 1 1 between the substrate 2 and the guide roller 6, 1 1 is threaded and a detachment of the substrate 2 allows.
- compressed air nozzles on the wall of the guide roller 6, 1 1 may be provided, which allow a detachment of the substrate 2 of the adhesive layer.
- the substrate 2 can also be attached to the substrate 2
- Deflection rollers 6, 1 1 are releasably fixed.
- a mechanical or a magnetic fixation possible.
- the first deflection roller 6 preferably has a radius of at least 20 mm, particularly preferably of at least 50 mm. However, a radius can also be in a range of 100 mm to 500 mm. This radius is particularly preferred for deflecting relatively less flexible substrate materials, such as Cardboard or flexible plastic cards, eg for ID cards and the like. In this case, the smaller the flexibility of the substrate 2, the larger the radius. For example, in the case of flexible plastic cards, a radius greater than 100 mm, greater than 200 mm or even greater than 500 mm can be selected as the substrate 2. These would, unlike paper sheets, be kinked at a too small radius of the guide roller.
- a fourth printing module 10 is arranged in the vertical direction z over the second deflecting roller 1 1.
- This fourth printing module 10 makes it possible to print on one or more colors of the back side of the substrate 2. This enables double-sided printing of the substrate 2.
- the printing module can also be arranged only in the region of the outlet table 14 and, if appropriate, further pressure modules can also be provided.
- Drying device 13 is arranged, which can perform a drying of the applied to the back of the substrate 2 application medium, for example via hot air.
- the pressure and the drying of the back of the substrate 2 can be advantageous if the substrate 2 is still guided by the second circulating roller 1 1 on the circular path segment. However, it is also possible to carry out these two steps only when the substrate 2 has reached the outlet point 18 and is deposited on the outlet table 14.
- the feed direction R is to be understood as a direction along a transport trajectory, which has several partial directions R1 to R6 in the course.
- R1 is a first linear partial direction. This partial direction corresponds to the direction of conveyance along the inlet table 15 up to the deflecting roller 6.
- the substrate 2 can be printed on the front side on the section with this first partial direction R1.
- R2 is a first curved part direction, in particular a direction of arcuate conveying direction.
- a radius of the arc is predetermined by the first guide roller 6. Through the promotion along the arc takes place Turning the Substrate 2. This tacking can either be done as transhipping or
- Inversion takes place, wherein the turn-over is particularly preferred, in which a shorter front edge is arranged parallel to the longitudinal axis of the two guide rollers 6, 11, while the two longer side edges of the substrate 2 assume a partially curved shape when passing through the method.
- the substrate 2 can be printed on the front side on the portion with this second partial direction R2.
- R3 describes a partial direction of the promotion of the first circular path segment to the second circular path segment of the second guide roller 1 first
- This partial direction is only a transfer point in Fig. 1, but it is also possible that with slight spacing of the two guide rollers 6 and 1 1 also a guided transfer, e.g. by roller guide, or an ungehanded transfer by detachment or falling of the substrate 2 from the first guide roller 6 and by receiving the substrate by the second guide roller 1 1 can be carried out.
- R4 is a further curved partial direction, in particular a conveying along a further circular arc section. A radius of this arc is given by the second guide roller 1 1.
- the second guide roller 1 1 allows bending of the substrate. 2
- R5 then describes a curved partial direction of a promotion of the guide roller 1 1 way to a discharge table fourteenth
- R6 is then a linear partial direction of conveyance on the exit table 14, for example, until the deposition of the substrate 2, e.g. on a discard pile.
- the substrate 2 has one or more reference marks or position marks, on the basis of which a spatial position of the substrate 2
- Substrate 2 and to be printed areas on the front and the back of the substrate 2 can be determined.
- the device 1 may include an image capture device, not shown, through which the substrate 2 can be imaged with the position marks.
- the spatial position can then eg the carriage with the printing modules 3, 4, 5 are positioned relative to the substrate 2 such that desired areas of the substrate 2 can be printed.
- the user can visually or the device e.g. a scan shows the guidance accuracy of the device based on the position markers.
- a scan shows the guidance accuracy of the device based on the position markers.
- the substrate 2 may comprise only a single benefit or multiple benefits, for example, arranged on a sheet.
- the substrate preferably has a density of 0.8 g / cm 3 to 1 .2 g / cm 3 .
- the suction force of the idler pulleys, the adhesion strength of the adhesion layer and the like are to be selected.
- the production of a value and / or security document can take place by printing on a sheet.
- This sheet may have several benefits and at least one plastic layer, in particular a transparent plastic would be.
- the value and / or security document may be any document that is a physical entity that is against unauthorized manufacture and / or
- the background for example an emblem
- the background can first be printed on a use, for example, in the case of an identification, and then by means of the device according to the invention by an inkjet method
- a security and / or security document has security features in particular.
- Security features are features that make it difficult to falsify and / or duplicate compared to a simple copy at least. Physical entities that include or form a security feature may be referred to as security features.
- a security document can have multiple security features and / or security elements. As defined herein, a security document is always a security element. Examples of
- Security documents which also include value documents representing a value, include, for example, passports, identity cards, driver's licenses, identity cards, access control cards, health insurance cards, banknotes,
- Postage stamps bank cards, credit cards, smart cards, tickets and labels.
- the aforementioned printing modules can each have one or more print heads. In this case, a color is assigned to each print head in a preferred embodiment.
- the printing modules in particular the print heads of the printing modules, have discharge nozzles.
- a distance between print head (discharge nozzle) and substrate 2 may preferably be between 0.7 mm and 2 mm.
- a distance between a discharge nozzle, in particular a discharge nozzle row, to a discharge nozzle or discharge nozzle row following in the transport direction should preferably be less than 0.3 mm.
- FIG. 2 shows a further embodiment variant of a device 1 according to the invention as an inkjet printing device.
- the embodiment variant of the device 1 shown in FIG. 2 is essentially the same as that shown in FIG.
- Embodiment variant of the device 1 is formed. Therefore, reference may be made to the explanations regarding FIG. In contrast to that shown in Figure 1
- the device 1 comprises positioning means 21, 22, 23 and a control and evaluation device 24.
- the control and evaluation device 24 in this case signal and / or data technology with the positioning means 21, 22, 23 is connected.
- a spatial position of a substrate 2 can be determined, in particular if a portion of the substrate 2 rests against the deflection roller 6 or is arranged in a feed section.
- This spatial position can be determinable in a coordinate system whose z-axis is oriented parallel and in the same direction as a vertical direction z.
- a y-axis may in this case be oriented perpendicular to the z-axis and perpendicular to the axis of rotation of the deflection rollers 6, 11.
- An x-axis (not shown) may be oriented perpendicular to the z-axis and perpendicular to the y-axis.
- the x-axis, the y-axis and the z-axis can form a Cartesian coordinate system.
- control and evaluation device 24 can control the positioning devices 21, 22, 23 in order to position the printing modules 3, 4, 5 in a desired spatial position position.
- the desired spatial position may in particular be a spatial position in which a printing module 3, 4, 5 can print a desired area of the substrate 2.
- This spatial position can also be determined in the coordinate system explained.
- the printing modules 3, 4, 5 can be moved by means of the positioning devices 21, 22, 23 along the illustrated x-axis. This may correspond to a movement transverse to the feed direction R of the substrate 2.
- Printing module 3 a second positioning device 22 for positioning a second printing module 4 and a third positioning device 23 for positioning a third printing module 5.
- the positioning 21, 22, 23 can be used as
- Linear drive devices may be formed or include such.
- a fourth positioning device 25 can also be connected to the control and evaluation device 24 signal and / or data technology.
- the fourth positioning device 25 By the fourth positioning device 25, the fourth printing module 10 can be moved along the illustrated x-axis. Of course, it may further be possible to move the fourth printing module 10 also along the y-axis and or along the z-axis. However, it is not mandatory to provide a fourth positioning device 25 for the fourth printing module 10.
- FIG. 3 shows a further embodiment variant of a device 1 according to the invention as an inkjet printing device.
- the embodiment variant of the device 1 shown in FIG. 3 is essentially the same as that shown in FIG.
- Embodiment variant of the device 1 is formed. Therefore, reference may be made to the explanations to FIG. In contrast to that shown in FIG.
- the device 1 comprises no positioning device 25 for the fourth printing module 10. Furthermore, the device 1 comprises an image capture device 26. This may be formed for example as a CCD or CMOS camera.
- Image capture device 26 is in this case arranged such that at least a partial region of the first side of a substrate 2 can be imaged by the image capture device 26.
- the subregion can be imaged, in particular, when a section of the substrate 2 bears against the deflecting roller 6 or is arranged in a feed section.
- Image capture device 26 may be signal and / or data technology connected to the control and evaluation device 24. Output signals, in particular image data, the Image capture device 26 can thus be transferred to the control and evaluation device 24. Furthermore, image-dependent determination of the spatial position by the control and evaluation device 24 can take place as a function of the image data generated by the image capture device 26.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ink Jet (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016221192.7A DE102016221192A1 (de) | 2016-10-27 | 2016-10-27 | Vorrichtung und Verfahren zum Bedrucken eines bogenförmigen Substrats |
| PCT/EP2017/077265 WO2018077927A1 (de) | 2016-10-27 | 2017-10-25 | Vorrichtung und verfahren zum bedrucken eines bogenförmigen substrats |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3532297A1 true EP3532297A1 (de) | 2019-09-04 |
| EP3532297B1 EP3532297B1 (de) | 2021-12-22 |
Family
ID=60164723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17788237.0A Active EP3532297B1 (de) | 2016-10-27 | 2017-10-25 | Vorrichtung und verfahren zum bedrucken eines bogenförmigen substrats |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3532297B1 (de) |
| DE (1) | DE102016221192A1 (de) |
| WO (1) | WO2018077927A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111838741A (zh) * | 2019-04-25 | 2020-10-30 | 秦皇岛烟草机械有限责任公司 | 一种原烟分级系统 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018125390B4 (de) | 2018-10-15 | 2023-11-16 | Bundesdruckerei Gmbh | Druckvorrichtung und verfahren zum bedrucken eines bogenförmigen substrats |
| DE102020110185A1 (de) | 2020-04-14 | 2021-10-14 | Bundesdruckerei Gmbh | Trommel für eine druckvorrichtung, druckvorrichtung und verfahren zum zeitweisen fixieren eines bogenförmigen substrats an einer trommel |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19745136B4 (de) * | 1996-10-17 | 2007-07-12 | Heidelberger Druckmaschinen Ag | Rotationsbogendruckmaschine |
| AU8990598A (en) * | 1997-09-04 | 1999-03-22 | Xaar Technology Limited | Vacuum drums for printing, and duplex printers |
| KR100776922B1 (ko) * | 1999-03-30 | 2007-11-20 | 세이코 엡슨 가부시키가이샤 | 인쇄 장치 및 그 제어 방법 |
| EP1607234A1 (de) * | 2004-06-17 | 2005-12-21 | Kba-Giori S.A. | Verfahren und Vorrichtung zum Aufbringen von Markierungen auf Sicherheitspapieren |
| JP4592663B2 (ja) * | 2006-09-20 | 2010-12-01 | デュプロ精工株式会社 | 両面画像形成装置 |
| JP2008100458A (ja) * | 2006-10-20 | 2008-05-01 | Seiko Epson Corp | インクジェットプリンタ |
| JP2009046295A (ja) * | 2007-08-23 | 2009-03-05 | Brother Ind Ltd | 画像記録装置 |
| JP2009137141A (ja) * | 2007-12-06 | 2009-06-25 | Seiko Epson Corp | 両面画像形成装置 |
| JP4702706B2 (ja) * | 2008-09-11 | 2011-06-15 | ブラザー工業株式会社 | プリンタ |
| JP2010179583A (ja) * | 2009-02-06 | 2010-08-19 | Seiko Epson Corp | ヘッドユニット位置調整方法及び記録装置 |
| US8534826B2 (en) * | 2010-02-22 | 2013-09-17 | Fujifilm Corporation | Inkjet recording apparatus and method |
| JP2012196832A (ja) * | 2011-03-18 | 2012-10-18 | Olympus Corp | 画像記録装置 |
| EP2657035B1 (de) * | 2012-04-24 | 2016-09-07 | Komori Corporation | Digitale Druckvorrichtung |
| DE202013102257U1 (de) * | 2012-05-29 | 2013-06-12 | manroland sheetfed GmbH | Inkjet-Druckkopf in einer Druckmaschine |
| CN105340256A (zh) * | 2013-06-28 | 2016-02-17 | 柯尼卡美能达株式会社 | 图像形成装置 |
| DE102016207398B3 (de) * | 2015-09-09 | 2016-08-18 | Koenig & Bauer Ag | Maschinenanordnung zum sequentiellen Bearbeiten mehrerer bogenförmiger jeweils eine Vorderseite und eine Rückseite aufweisender Substrate |
-
2016
- 2016-10-27 DE DE102016221192.7A patent/DE102016221192A1/de active Pending
-
2017
- 2017-10-25 WO PCT/EP2017/077265 patent/WO2018077927A1/de not_active Ceased
- 2017-10-25 EP EP17788237.0A patent/EP3532297B1/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111838741A (zh) * | 2019-04-25 | 2020-10-30 | 秦皇岛烟草机械有限责任公司 | 一种原烟分级系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018077927A1 (de) | 2018-05-03 |
| EP3532297B1 (de) | 2021-12-22 |
| DE102016221192A1 (de) | 2018-05-03 |
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