EP4090537A1 - Druckmaschine mit aufladungseinrichtung - Google Patents
Druckmaschine mit aufladungseinrichtungInfo
- Publication number
- EP4090537A1 EP4090537A1 EP21731742.9A EP21731742A EP4090537A1 EP 4090537 A1 EP4090537 A1 EP 4090537A1 EP 21731742 A EP21731742 A EP 21731742A EP 4090537 A1 EP4090537 A1 EP 4090537A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- charging device
- charging
- print head
- contact surface
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
- B41F19/007—Apparatus or machines for carrying out printing operations combined with other operations with selective printing mechanisms, e.g. ink-jet or thermal printers
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/004—Feeding articles separated from piles; Feeding articles to machines using electrostatic force
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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
- 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
- B41J11/007—Conveyor belts or like feeding 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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
- B65H2511/15—Height, e.g. of stack
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
- B65H2511/22—Distance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/176—Cardboard
Definitions
- the invention relates to a printing machine with a charging device according to the preamble of claim 1.
- a sheet-fed printing machine is known from US 2017/0326890 A1, which has a curved transport belt for sheet guidance, with a roller being arranged for charging, which is in contact with the transport belt or a sheet.
- a device for printing sheets is known from EP 2 371 561 A2, which has a charging device arranged below a conveyor belt.
- US 2005/0212871 A1 discloses a sheet-fed printing press that has a charging device that acts exclusively on sheets from above, or alternatively a charging device that acts on a conveyor belt from below.
- US Pat. No. 1,0,343,420 B2 discloses a printing machine with a revolving, movable support element and an inkjet print head, which has a charging device with a charging electrode and a neutralizing device with a grounded electrode.
- the charging electrode is placed in contact with the substrate or close to the substrate.
- US 2014/0267 501 A1 discloses a device for reducing electrical charging in an inkjet printing machine.
- a device for treating substrate surfaces by means of corona discharge is known from DE 19923 655 A1.
- a device is known from US 2002/0 027 588 A1, by means of which it is possible to monitor whether substrate sheets attached to a conveyor belt by electrical charge are properly released from this conveyor belt again.
- the object of the invention is to create a printing machine with a charging device.
- a printing machine in particular an inkjet printing machine, has at least one revolvingly movable support element, which has a revolvingly movable contact surface provided for contact with a printing material.
- the printing press has at least one first print head, designed in particular as an inkjet print head, the at least one ejection opening of which is arranged aligned with the at least one support element and in particular with the contact surface.
- the printing press has at least one first charging device, in particular for electrostatically charging printing material.
- the at least one first charging device has at least one charging electrode, in particular an upper charging electrode, which is arranged, in particular, aligned from above onto the contact surface.
- the at least one first charging device has at least one counter-electrode, in particular a lower one.
- the contact surface is at least partially arranged between the at least one charging electrode and the at least one counter-electrode of the at least one first charging device.
- a minimum distance between the at least one and preferably each charging electrode of the first charging means and the contact surface is larger than a minimum distance between one and preferably each ejection opening of the at least one first print head and the contact surface.
- the printing material can be transported with at least reduced vacuum or without vacuum, so that a respective trajectory of ink droplets is not negatively influenced by air currents. Wear of a conveyor belt can also be reduced by at least reducing the negative pressure.
- the printing machine is preferably characterized in that the smallest distance between the at least one and preferably each charging electrode of the first charging device and the contact surface is at least 50 mm, more preferably at least 60 mm, even more preferably at least 65 mm and even more preferably at least is 70 mm.
- a high electric field strength and/or a high charge can be generated and yet a voltage breakdown can be avoided.
- the printing press is preferably characterized in that at least one first position sensor is arranged, by means of which a height position of a printing material relative to the contact surface can be determined. This enables an automated emergency stop function and/or charging regulation.
- the printing press is preferably characterized in that the at least one first charging device and then the at least one first print head are arranged along a transport path provided for transporting printing material. This ensures that the printing material does not damage the print head substrate is in contact with the contact surface.
- the printing press is preferably characterized in that at least one detection area of the at least one first position sensor is arranged after the at least one first print head along the transport path provided for transporting printing material. As a result, the charging can be regulated in a particularly favorable manner, because a satisfactory measurement result behind the print head indicates an at least satisfactory state in the area of the print head.
- the printing press is preferably characterized in that along the transport path provided for transporting printing material, after the at least one first print head and/or after the at least one detection area of the at least one first position sensor, there is at least one second charging device and then at least a second print head is arranged.
- the printing press is preferably characterized in that between the at least one charging electrode and the at least one counter-electrode of the first charging device there is a voltage of at least 25 kV, more preferably at least 30 kV and even more preferably at least 35 kV and independently of this preferably at most 45 kV and more preferably at most 40 kV.
- the printing press is preferably characterized in that a transport path provided for transporting printing material runs between the at least one circumferential contact surface and the at least one charging electrode of the at least one first charging device. This optimizes the alignment of the field lines of the electrical field in the area of the boundary between the contact surface and the printing material.
- the printing machine is preferably characterized in that the at least one first charging device is designed as a direct current charging device. This achieves particularly efficient and uniform charging.
- the printing press is preferably characterized in that at least one first field strength sensor for measuring an electrical field strength is arranged in particular along the transport path provided for the transport of printing material after the at least one first charging device and/or after the at least one first print head is.
- the printing press is preferably characterized in that a transport path provided for transporting printing material runs essentially flat at least from the charging electrode of the first charging device to the at least one second print head. This also allows thick substrates to be transported, such as sheets of corrugated cardboard.
- the printing press is preferably characterized in that the at least one revolving support element is designed as a conveyor belt and/or as a suction conveyor belt.
- the printing machine is preferably characterized in that the printing machine has at least one support device, which has a sliding surface that supports the at least one conveyor belt and more preferably is at least partially metallic, and that the at least one support device is arranged to act as the at least one counter-electrode is.
- the printing press is preferably characterized in that the printing press is designed as a sheet-fed printing press and/or has at least one sheet feeder for sheet-shaped printing material, which more preferably has a separating device arranged below a stacking area provided for a stack of sheets, in particular for separating sheet-type printing material from at least one stack of sheets from below.
- the printing press is preferably characterized in that the printing press is designed as a web-fed printing press and/or has at least one roll-unwinding device for web-shaped printing material.
- the printing machine is preferably characterized in that the at least one supporting element that can be moved in a circumferential direction is designed as a central cylinder.
- FIG. 1 shows a schematic representation of a region of a printing unit with print heads and charging devices
- FIG. 2 shows a schematic representation of a sheet-fed printing press with a conveyor belt as a support element
- FIG. 3 shows a schematic representation of a printing unit with print heads, charging devices and suction boxes
- FIG. 4 shows a schematic representation of a web-fed printing machine with a central cylinder as a support element; 5 shows a schematic representation of electrodes of a charging device between which a voltage is present.
- a printing press 01 is preferably embodied as an inkjet printing press 01.
- Printing press 01 is used in particular to print on printing material 02.
- Printing press 01 is embodied, for example, as a sheet-fed printing press 01, i.e. as a printing press 01 for sheet-type printing material 02.
- Printing press 01 is embodied, for example, as a sheet-fed corrugated cardboard printing machine 01, i.e. as a printing press 01 for printing on sheets 02 made of corrugated cardboard.
- printing press 01 is embodied as a web-fed printing press 01. Insofar as features are described above and below based on an embodiment as a sheet-fed printing press 01, these also apply to a general printing press 01, in particular also to a web-fed printing press 01, at least insofar as there are no contradictions.
- a transport path for transporting printing material 02 through printing press 01 is preferably provided.
- the transport path provided for the transport of printing substrate 02 is, in particular, the spatial area that printing substrate 02 occupies and/or would occupies at least temporarily if it were to be present.
- a transport direction T is preferably that direction T which runs tangentially to a section and/or point of the intended transport path that is closest to a respective reference point and is provided for the transport of printing substrate 02 at this section and/or point.
- This respective reference point is preferably at the point and/or at the component that is related to the transport direction T.
- the transport direction T therefore preferably extends in each case along the transport path provided for printing substrate 02.
- a transverse direction A is preferably a direction A that extends orthogonally to the transport direction T and horizontally.
- a working width of printing press 01 is preferably a dimension that preferably extends in the transverse direction A.
- the working width of printing press 01 preferably corresponds to a maximum Width that a printing substrate 02 may have in order to still be able to be printed with printing press 01, i.e. in particular a maximum sheet width and/or web width and/or width of printing substrate 02 that can be processed with printing press 01.
- Below the width of printing substrate 02 is included in particular to understand its dimension in the transverse direction A.
- the working width of printing press 01 is, for example, at least 20 cm, preferably at least 50 cm, more preferably at least 100 cm, even more preferably at least 150 cm, even more preferably at least 200 cm and even more preferably at least 250 cm.
- the printing press 01 has at least one support element 07 that can be moved in a circumferential direction and has a contact surface 08 that can be moved in a circumferential direction and is intended for contact with a printing substrate 02.
- the at least one support element 07 is designed, for example, to be flexible, in particular as a conveyor belt 18, or rigid, in particular as a cylinder 29, in particular a central cylinder 29.
- the printing machine 01 has at least a first print head 09, designed in particular as an inkjet print head 09.
- the at least one first print head 09 preferably has at least one ejection opening 12, which serves in particular to eject drops of ink in a targeted manner.
- the at least one first print head 09 is preferably embodied as a print head 09 that operates according to the drop-on-demand principle.
- the at least one ejection opening 12 of the at least one first print head 09 is preferably aligned with the at least one support element 07 and in particular with the contact surface 08 of this at least one support element 07.
- the at least one support element 07 is used in particular to hold the printing material 02 in a defined position while the ink is being applied to it.
- Contact surface 08 is preferably a contact surface 08 that can be moved relative to the at least one first print head 09.
- Contact surface 08 is preferably a contact surface 08 that can be moved in a circumferential direction together with the printing substrate 02.
- Printing machine 01 preferably has at least one charging device 03; 13 on, in particular for electrostatically charging printing substrate 02. More preferably, printing press 01 has at least one first charging device 03 and even more preferably additionally at least one second charging device 13. The respective at least one charging device 03; 13 serves in particular to fix the printing substrate 02 relative to the at least one support element 07.
- the at least one first charging device 03 has at least one charging electrode 04, which is aligned with contact surface 08.
- the at least one first charging electrode 04 is preferably arranged at least partially above contact surface 08 and/or aligned with contact surface 08 from above.
- the at least one first charging device 03 preferably has at least one counter-electrode 06.
- the at least one counter-electrode 06 is preferably arranged below the at least one contact surface 08 and/or at least below parts of the at least one support element 07.
- the transport path provided for transporting printing substrate 02 preferably runs between the at least one circumferential contact surface 08 and the at least one charging electrode 04 of the at least one first charging device 03.
- Contact surface 08 is preferably at least partially between the at least one charging electrode 04 and the at least one Counter-electrode 06 of the at least one first charging device 03 is arranged.
- the at least one first charging device 03 is preferably configured in such a way that at least one side of the printing substrate 02 and more preferably the entire printing substrate 02 can be electrostatically charged without coming into contact with the first charging device 03. As a result, the corresponding surface of printing substrate 02 can be treated gently, particularly in the case of intermediate charging.
- a smallest distance a between the at least one charging electrode 04 of the at least one first charging device 03 and the contact surface 08 is preferably larger than a smallest distance b between a and preferably of each ejection opening 12 of the at least one first print head 09 and the contact surface 08.
- the smallest distance a between the at least one and in particular each charging electrode 04 of the at least one first charging device 03 and the contact surface 08 is at least 50 mm, even more preferably at least 60 mm , even more preferably at least 65 mm and even more preferably at least 70 mm.
- the printing press 01 is preferably characterized in that at least one first position sensor 17 is provided, by means of which a height position of a printing substrate 02 relative to the contact surface 08 can be determined.
- the at least one first position sensor 17 is preferably embodied as a laser measuring device 17, in particular for triangulation measurement.
- printing press 01 is preferably characterized in that the at least one first charging device 03 and then the at least one first print head 09 are arranged along a transport path provided for transporting printing substrate 02.
- printing press 01 is preferably characterized in that at least one detection region of the at least one first position sensor 17 and/or the at least one first position sensor is located downstream of the at least one first print head 09 along the transport path provided for the transport of printing substrate 02 17 is arranged.
- the printing press 01 is preferably characterized in that the at least one first charging device 03 is embodied as a direct current charging device 03. This means in particular that the sign of the voltage applied to the respective charging electrode 04 does not change during operation. At least in one operating state of the printing machine 01, there is preferably a gap between the at least one charging electrode 04 and the at least one counter-electrode 06 of the first charging device 03, an electrical voltage of at least 25 kV, preferably at least 30 kV and more preferably at least 35 kV and independently of this preferably at most 45 kV and more preferably at most 40 kV.
- printing press 01 is preferably characterized in that, in particular along the transport path provided for the transport of printing substrate 02, after the at least one first charging device 03 and/or after the at least one first print head 09, at least one first field strength sensor 27 is provided for Measurement of an electric field strength is arranged.
- This at least one first field strength sensor 27 is preferably connected in terms of circuitry to the at least one first charging device 03 in such a way that these form a control loop, in particular for regulating the electric field strength and/or the voltage applied to the at least one charging electrode 04 and/or a voltage in the area of the at least one second print head 11 prevailing negative pressure of the conveyor belt 18.
- the at least one first position sensor 17 is preferably connected in terms of circuitry to the at least one first charging device 03 in such a way that these are part of a control loop, in particular for controlling the electric field strength and/or the voltage applied to the at least one charging electrode 04 and/or a negative pressure of the conveyor belt 18 prevailing in the area of the at least one second print head 11. Optimum charging can thus take place.
- the at least one first position sensor 17 is connected in terms of circuitry to a preferably automated emergency stop function for terminating a printing material transport. Damage to the at least one first print head 09, for example, can then preferably be prevented.
- printing press 01 is preferably characterized in that along the transport path provided for transporting printing substrate 02 after the at least one first print head 09 and/or after the at least one detection area of the at least one first position sensor 17 at least one second charging device 13 and then at least one second print head 11 is arranged.
- the at least one second charging device 14 has at least one charging electrode 14, which is aligned with contact surface 08.
- the at least one second charging electrode 14 is preferably arranged at least partially above contact surface 08 and/or aligned with contact surface 08 from above.
- the at least one second charging device 13 preferably has at least one counter-electrode 16.
- the at least one counter-electrode 16 is preferably arranged below the at least one contact surface 08 and/or at least below parts of the at least one support element 07.
- the transport path provided for transporting printing substrate 02 preferably runs between the at least one circumferential contact surface 08 and the at least one charging electrode 14 of the at least one second charging device 13.
- Contact surface 08 is preferably located at least partially between the at least one charging electrode 14 and the at least one counter-electrode 16 of the at least one second charging device 13.
- the at least one second charging device 13 is preferably configured in such a way that at least one side of the printing substrate 02, and more preferably the entire printing substrate 02, can be electrostatically charged without coming into contact with the second charging device 13. As a result, the corresponding surface of printing substrate 02 can be treated gently, particularly in the case of intermediate charging.
- a smallest distance a between the at least one charging electrode 14 of the at least one second charging device 13 and the contact surface 08 is preferably greater than a smallest distance b between one and preferably each ejection opening 12 of the at least one second print head 11 and the contact surface 08.
- At least one and in particular each charging electrode 14 of the at least one second charging device 13 and the contact surface 08 is the smallest distance a between the at least one and in particular each charging electrode 14 of the at least one second charging device 13 and the contact surface 08 at least 50 mm, even more preferably at least 60 mm, even more preferably at least 65 mm and even more preferably at least 70 mm.
- the printing press 01 is preferably characterized in that at least one second position sensor 34 is provided, by means of which a height position of a printing substrate 02 relative to the contact surface 08 can be determined.
- the at least one second position sensor 34 is preferably embodied as a laser measuring device 34, in particular for triangulation measurement.
- printing press 01 is preferably characterized in that the at least one second charging device 13 and then the at least one second print head 11 are arranged along a transport path provided for transporting printing substrate 02.
- printing press 01 is preferably characterized in that, downstream of the at least one second print head 11, along the transport path provided for the transport of printing substrate 02, there is at least one detection region of the at least one second position sensor 34 and/or the at least one second position sensor 34 is arranged.
- printing press 01 is preferably characterized in that the at least one second charging device 13 is embodied as a direct current charging device 13. This means in particular that a sign of the voltage present at the respective charging electrode 14 does not change during operation.
- an electrical voltage of at least 25 kV, more preferably at least 30 kV and even more preferably at least 35 kV and independently of this is preferably present between the at least one charging electrode 14 and the at least one counter-electrode 16 of the second charging device 13 at most 45 kV and more preferably at most 40 kV.
- printing press 01 is preferably characterized in that at least one second field strength sensor 36 is provided after the at least one second charging device 13 and/or after the at least one second print head 11, in particular along the transport path provided for the transport of printing substrate 02 Measurement of an electric field strength is arranged.
- This at least one second field strength sensor 36 is preferably connected in terms of circuitry to the at least one second charging device 13 in such a way that these form a control loop, in particular for controlling the electric field strength and/or the voltage present at the at least one charging electrode 14 and/or a voltage in the area of the at least one second print head 11 prevailing negative pressure of the conveyor belt 18.
- the at least one second position sensor 34 is preferably connected in terms of circuitry to the at least one second charging device 13 in such a way that these form a control loop, in particular for controlling the electric field strength and/or the on the voltage applied to the at least one charging electrode 14 and/or a negative pressure of the conveyor belt 18 prevailing in the region of the at least one second print head 11. This enables optimized charging to take place.
- the at least one second position sensor 34 is connected in terms of circuitry to a preferably automated emergency stop function for terminating a printing material transport. Damage to the at least one second print head 11, for example, can then preferably be prevented.
- the at least one support element 07 that can be moved in a circumferential direction is embodied as a conveyor belt 18.
- the transport path provided for the transport of printing substrate 02 preferably runs essentially flat and even more preferably completely flat, at least from the charging electrode 04 of the first charging device 03 to the at least one first print head 09.
- Below an essentially flat section of a section provided for printing substrate 02 A transport path is a section that has a minimum radius of curvature of at least 2 meters, more preferably at least 5 meters and even more preferably at least 10 meters and even more preferably at least 50 meters.
- a completely flat section has an infinitely large radius of curvature and thus is also substantially flat and thus also has a minimum radius of curvature that is at least 2 meters.
- Printing press 01 more preferably has at least one second charging device 13 and then at least one second print head 11 along the transport path provided for the transport of printing substrate 02 after the at least one first print head 09.
- the transport path provided for the transport of printing substrate 02 preferably runs essentially flat and even more preferably completely flat, at least from the charging electrode 04 of the first charging device 03 to the at least one second print head 11.
- the printing press 01 is preferably characterized in that the printing press 01 has at least one support device 26, which has a preferably metallic sliding surface 28 that supports the at least one conveyor belt 18, and that the at least one support device 26 acts as the at least one Counter electrode 06 is arranged to act.
- This support device 28 extends, for example, at least in the area of the at least one first charging electrode 03 along the transport path provided for the transport of printing substrate 02.
- a separate, in particular electrically neutral or grounded, support device 31 is arranged, for example.
- support device 28, which acts as counter-electrode 06 extends along the transport path provided for the transport of printing substrate 02 over the area of the at least one charging electrode 03; 13 out.
- the printing press 01 preferably characterized in that the at least one conveyor belt 18 is designed as a suction conveyor belt 18 at least in some areas.
- a suction conveyor belt 18 is to be understood as meaning a conveyor belt 18 which has openings and is guided over at least one suction box 32 .
- the at least one suction box 32 is preferably connected to a vacuum source 33, for example a pump 33. The vacuum is then passed on through the openings in the suction conveyor belt 18 and is used to hold the printing material 02 on the contact surface 08.
- Conveyor belt 18 is preferably arranged along the transport path provided for the transport of printing substrate 02, at least between the first charging device 03 and the at least one first print head 09 and more preferably the at least one second print head 11, guided exclusively by guide elements that are stationary with respect to rotational movements. In particular, preferably no support rollers are arranged in this area.
- At least one idle area around the at least one first print head 09 and/or around the at least one second print head 11 there is no negative pressure acting on the conveyor belt 18 from below, even if the conveyor belt 18 is designed as a suction conveyor belt 18 at other points and/or or is operated.
- at least one first such idle area preferably extends opposite the transport path provided for the transport of printing substrate 02 over at least 5 cm, more preferably at least 8 cm and even more preferably at least 10 cm, and independently of this starting from the at least a first print head 09 along the transport path provided for the transport of printing substrate 02 over at least 5 cm, more preferably at least 8 cm and even more preferably at least 10 cm.
- At least one second such idle area preferably extends opposite the transport path provided for the transport of printing substrate 02 over at least 5 cm, more preferably at least 8 cm and even more preferably at least 10 cm, and independently of this starting from the at least one second print head 11 along the transport path provided for the transport of printing substrate 02 over at least 5 cm, more preferably at least 8 cm and even more preferably at least 10 cm.
- Printing press 01 is preferably embodied as a sheet-fed printing press 01 and/or has at least one sheet feeder 19 for sheet-type printing material 02, which more preferably has a separating device 23 arranged below a stacking area 22 provided for a stack of sheets 21, in particular for separating sheet-type printing material 02 from has at least one stack of sheets 21 from below.
- a sheet-fed printing press 01 has, for example, a sheet feeder 19, at least one printing unit 37, in particular a non-impact printing unit 37, and at least one delivery 38.
- the at least one printing unit 37 preferably has the at least one first print head 09 and more preferably also the at least one second print head 11.
- At least one priming unit 39 which is embodied, for example, as a flexographic printing unit 39, is preferably arranged upstream of the at least one printing unit 37 along the transport path provided for the transport of printing substrate 02.
- At least one coating unit 41 which is embodied, for example, as a flexographic printing unit 41, is preferably arranged downstream of the at least one printing unit 37 along the transport path provided for the transport of printing substrate 02. (This is also shown schematically in Fig. 2 and 3 as an example.)
- the design of the printing press 01 with a conveyor belt 18 can also be used as a web-fed printing press 01 if the printing material 02 is fed in and/or removed accordingly.
- the at least one circumferentially movable support element 07 is designed as a cylinder 29, in particular as a central cylinder 29.
- the at least one first print head 09 is then preferred, and the at least one second print head 11 is also more preferred, in particular radially onto the cylinder 29 or Central cylinder 20 arranged aligned.
- the at least one first charging device 03 then preferably has the at least one first charging electrode 04, which is arranged outside of the cylinder 29 or central cylinder 29 when viewed in the radial direction.
- the at least one first charging device 03 then preferably has at least one counter-electrode 06, which is arranged radially inside the cylinder 29 or central cylinder 29.
- printing press 01 is then embodied as a web-fed printing press 01 and/or printing press 01 then has at least one roll unwinding device 24 for web-type printing substrate 02, which is embodied, for example, as a reel splicer 24 for flying reel changes.
- Printing press 01 preferably has a substrate delivery device 42, which is embodied, for example, as a winding device 42 and/or cutting device 42 and/or folding device 42.
- Web-type printing substrate 02 can be transported, for example, by means of deflecting, actively or passively driven rollers and/or cylinders and/or fixed guide elements and/or conveyor belts and/or suction systems. (This is also shown schematically in Fig. 4 as an example.)
- the version with one cylinder 29 can also be used as a sheet-fed printing press 01, preferably with a corresponding supply and/or removal of the printing substrate 02 and, if necessary, further holding elements.
- 01 printing machine inkjet printing machine, sheet-fed printing machine, corrugated sheet-fed printing machine, web-fed printing machine
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ink Jet (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020120882.0A DE102020120882A1 (de) | 2020-08-07 | 2020-08-07 | Druckmaschine mit Aufladungseinrichtung |
| PCT/EP2021/065113 WO2022028751A1 (de) | 2020-08-07 | 2021-06-07 | Druckmaschine mit aufladungseinrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4090537A1 true EP4090537A1 (de) | 2022-11-23 |
| EP4090537B1 EP4090537B1 (de) | 2023-12-20 |
Family
ID=76392365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21731742.9A Active EP4090537B1 (de) | 2020-08-07 | 2021-06-07 | Druckmaschine mit aufladungseinrichtung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11639066B2 (de) |
| EP (1) | EP4090537B1 (de) |
| CN (1) | CN115151423B (de) |
| DE (1) | DE102020120882A1 (de) |
| WO (1) | WO2022028751A1 (de) |
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| DE102023131229B3 (de) | 2023-11-10 | 2025-01-23 | Koenig & Bauer Ag | Non Impact Druckmaschine mit Zentralzylinder und einer Aufladungseinrichtung |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19923655A1 (de) | 1999-05-22 | 2000-12-07 | Klaus W Gerstenberg | Vorrichtung zur Behandlung eines als Bahn, Bogen, Platte oder dergleichen vorliegenden Substrats mittels elektrischer Koronaentladung |
| JP4646465B2 (ja) | 2000-09-05 | 2011-03-09 | キヤノン株式会社 | 記録媒体搬送装置及び該記録媒体搬送装置を備えた記録装置 |
| JP2005271481A (ja) | 2004-03-25 | 2005-10-06 | Fuji Photo Film Co Ltd | 画像形成装置及び方法 |
| JP4905576B2 (ja) | 2010-03-31 | 2012-03-28 | ブラザー工業株式会社 | 画像記録装置 |
| US9327526B2 (en) * | 2012-07-25 | 2016-05-03 | Xerox Corporation | Active biased electrodes for reducing electrostatic fields underneath print heads in an electrostatic media transport |
| US8947482B2 (en) | 2013-03-15 | 2015-02-03 | Xerox Corporation | Active biased electrodes for reducing electrostatic fields underneath print heads in an electrostatic media transport |
| US9132673B2 (en) * | 2012-12-27 | 2015-09-15 | Xerox Corporation | Semi-conductive media transport for electrostatic tacking of media |
| US10525745B2 (en) | 2016-05-13 | 2020-01-07 | Delphax Technologies Inc. | Electrostatic charging apparatus and method for sheet transport |
| EP3403957A1 (de) | 2017-05-13 | 2018-11-21 | Delphax Technologies, Inc. | Medienblatttransportvorrichtung und -verfahren |
-
2020
- 2020-08-07 DE DE102020120882.0A patent/DE102020120882A1/de not_active Withdrawn
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2021
- 2021-06-07 CN CN202180016945.0A patent/CN115151423B/zh active Active
- 2021-06-07 EP EP21731742.9A patent/EP4090537B1/de active Active
- 2021-06-07 WO PCT/EP2021/065113 patent/WO2022028751A1/de not_active Ceased
- 2021-06-07 US US17/802,552 patent/US11639066B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US11639066B2 (en) | 2023-05-02 |
| EP4090537B1 (de) | 2023-12-20 |
| CN115151423A (zh) | 2022-10-04 |
| WO2022028751A1 (de) | 2022-02-10 |
| DE102020120882A1 (de) | 2022-02-10 |
| US20230078057A1 (en) | 2023-03-16 |
| CN115151423B (zh) | 2023-06-20 |
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