EP0115611B1 - Dispositif à imprimer avec un champ électrostatique auxiliaire - Google Patents

Dispositif à imprimer avec un champ électrostatique auxiliaire Download PDF

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Publication number
EP0115611B1
EP0115611B1 EP83112743A EP83112743A EP0115611B1 EP 0115611 B1 EP0115611 B1 EP 0115611B1 EP 83112743 A EP83112743 A EP 83112743A EP 83112743 A EP83112743 A EP 83112743A EP 0115611 B1 EP0115611 B1 EP 0115611B1
Authority
EP
European Patent Office
Prior art keywords
inductor
impression roller
printing device
face
printing
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.)
Expired
Application number
EP83112743A
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German (de)
English (en)
Other versions
EP0115611A1 (fr
Inventor
Walter Spengler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Spengler Electronic Ag wohlfahrtsstiftung Der Spen
Original Assignee
Spengler Walter
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Spengler Walter filed Critical Spengler Walter
Priority to AT83112743T priority Critical patent/ATE25036T1/de
Publication of EP0115611A1 publication Critical patent/EP0115611A1/fr
Application granted granted Critical
Publication of EP0115611B1 publication Critical patent/EP0115611B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/001—Heliostatic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/18—Impression cylinders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/37—Printing employing electrostatic force
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/001—Electric or magnetic imagery, e.g., xerography, electrography, magnetography, etc. Process, composition, or product
    • Y10S430/102—Electrically charging radiation-conductive surface

Definitions

  • the invention relates to a printing unit, in particular a gravure printing device with an electrostatic printing aid for supporting the ink transfer from a printing cylinder to a dielectric substrate web, in a printing nip formed between the printing cylinder surface and an electrostatically chargeable outer jacket layer of an impression roller with a high-voltage-fed inductor device for electrostatically charging at least one each in the section of the outer jacket layer of the pressurewave entering the pressure nip.
  • an inductor device with an elongated electrode carrier in which one or more rows of electrodes are incorporated. High voltage is supplied to these electrodes and they have tips which protrude from the electrode carrier and release the charge to the outer jacket layer.
  • the electrode carrier is aligned at a suitable point in the printing unit with the tips approximately parallel to the outer jacket layer along the impression roller and the electrical charge is induced in this way without contact (DE-A-2713334).
  • Such an inductor device works very satisfactory in itself, but certain influences that have their cause in the printing process lead to difficulties, especially after a long period of use of the inductor device.
  • an atmosphere enriched with ink and solvent particles and with material dust from the substrate web to be printed is formed during its operation. Such particles and paper dust accumulate over time on the inductor device and especially on the electrode carrier and settle there.
  • the inductor device is not included in the usual regular cleaning processes on the printing unit, a color and dirt deposit forms, especially in hard-to-reach places on the inductor device, which, with otherwise sufficient insulation of the electrodes from earth, conducts leakage currents and promotes voltage flashovers, and in particular from the electrode tips to the ground connection for the inductor device which is necessarily to be provided.
  • a sparkover that has already started and has not been switched off leads to rapid destruction of the inductor device and also increases the general risk of fire.
  • the object of the invention is to provide a printing unit of the type defined in the introduction, in which the inductor device, while maintaining an optimal charge application and uniform charge distribution on the outer jacket layer of an impression roller, is designed and arranged such that any impairment of the induction process by ink and solvent components as well as contamination of any kind is excluded.
  • the inductor device is arranged on at least one end face of the impression roller and is advantageously removed from the area in which the greatest possibility of contamination already exists by this type of attachment provided according to the invention. Furthermore, the inductor device according to the invention is provided with at least one inductor electrode, which is provided next to an end edge of the outer jacket layer in a manner which is concealed from external access. As a result of this possibility of supplying electrostatic charge to the outer jacket layer or to its front edge, as seen from the outside of the impression roller, advantageous shielding of the inductor electrode and the charge-carrying elements is achieved.
  • the inductor device has an electrode carrier which is placed in the manner of a cover on the end faces of an impression roller. A distance is formed between this lid-shaped electrode carrier and the end face of the impression roller such that an air ring gap is formed between these two parts.
  • a plurality of inductor electrodes are provided in a circular distribution on the outer jacket layer of the impression roller, which transfer their charge to the outer jacket layer in a contactless manner via their electrode tips.
  • a printing unit 1 comprises a printing cylinder 2 which is immersed in an ink bath which is located in an ink fountain 25.
  • the printing cylinder 2 rotates in the ink bath, it takes up printing ink on its surface, which is wiped off by a doctor blade 26, so that ink only remains in the engraving cups of the printing cylinder surface.
  • the pressure cylinder 2 is rotated on a central shaft 27 by a drive (not shown) and moves in the direction of arrow I.
  • Fig. 1 is located above the impression cylinder 2, an impression roller 4, which is rotatably supported by a concentric shaft 29 in a bearing arrangement 28 on the frame of the printing unit, not shown.
  • This impression roller 4 is driven opposite to the impression cylinder 2 in the direction of arrow 11.
  • a pressure gap 6 is formed between the impression roller 4 and the impression cylinder 2, through which a substrate web 3 to be printed is passed.
  • This substrate web 3 can be drawn off in the direction of arrow 111 from a supply roll (not shown), introduced into the printing unit 1 along a first guide roller 30 and, after passing through the printing nip 6, can be fed along a second guide roller 31 to a further downstream printing unit or a winding device.
  • an ionizer 32 is arranged close above the substrate web 3; both ionizers serve to discharge electrostatic charges from the substrate web.
  • the impression roller 4 shown in the figures has a hollow cylinder 19 made of metal, which forms the supporting roller body, and in which the end bearing shafts 29 are firmly fitted.
  • a jacket 20 made of electrically insulating material with a high dielectric constant is applied to the outer surface of this hollow cylinder 19. 2, there is the electrostatically chargeable outer jacket layer 5, which consists of a semiconductor material.
  • a polyurethane is preferably chosen for the outer jacket layer, which is resistant to abrasion and has an elasticity which takes into account the mechanical pressure requirements.
  • an inductor device 7 is visible as an annular disk, which has a central opening for the bearing shaft 29. 2 and 3 it can be seen that the inductor device 7 is shaped like a cover and is mounted close to an end face 14 of the impression roller 4 and an end face edge 10 of the outer jacket layer 5.
  • the inductor device 7 comprises an electrode carrier 12, with an inner side 13, which is reshaped to the front edge 10 and an end ring surface 35 of the impression roller 4, so that an air ring gap 15 is formed between the inside of the electrode carrier 12 and the aforementioned sections of the impression roller 4. If the inductor device 7 is fixedly attached to the bearing arrangement 28 or to another location of the printing unit frame in the manner indicated in FIG. 2, when the impression roller 4 is rotating, it always remains at the distance formed by the air ring gap 15 from the opposite sections of the impression roller stand.
  • a circumferential annular groove 16 is cut out in the air ring gap 15 at the height of the outer jacket layer 5. Electrode tips 11 of inductor electrodes 9, which are embedded in the electrode carrier 12, distributed approximately uniformly over its circumference, end in this annular groove. Each inductor electrode 9 is connected to a high voltage supply 8 via a corresponding electrical coupling element 33. This high-voltage supply 8 can be led to each inductor electrode in the form of a separate line or can be designed as a ring line, from which branches lead to each inductor electrode.
  • the electrode carrier 12 can consist of casting resin, into which the electrodes 9, the coupling elements 33 and the high-voltage leads 8 can be cast.
  • the electrode tips 11 protrude so far into the annular groove 16 that a sufficiently large portion of the tip is available for transferring the charge to the outer jacket layer at each tip.
  • the number of electrode tips provided in an annular groove 16 or the number of inductor electrodes 9 provided in the electrode carrier 12 depends on several factors, e.g. B. the diameter of the impression roller 4, the height of the charge to be applied, the type of structure of the conductor means 21 on or in the outer jacket layer 5, the resistance values of this layer, which can be variable over the length of the impression roller towards the center of the roller, etc If the number of electrodes to be accommodated in an electrode carrier 12 is not sufficient for certain applications, an inductor device 7 could be provided on both end faces of an impression roller. This supply of electrostatic charge to the outer jacket layer 5 on both sides can also support a more uniform charge distribution in the axial direction of the impression roller.
  • seals 17 bridging the air gap 15 are provided between the electrode carrier 12 and the outer jacket layer 5 and the end face annular surface 35 of the impression roller 4.
  • These seals can be designed as shaft seals or surface sealing rings of a commercially available type. They can be attached to the electrode carrier 12 and touch the outer jacket layer or the end face annular surface 35 with their sealing lips and thereby completely close off the air ring gap 15.
  • the air ring gap 15 is constantly flushed with compressed air during operation.
  • a plurality of compressed air nozzles 18 are provided in the annular groove 16 of the electrode carrier 12, distributed over the circumference of the annular groove, which are connected to a compressed air source P via a corresponding valve 34. If compressed air is supplied to the annular groove 16, it can both escape between the electrode carrier 12 and the front edge 10 of the outer jacket layer 5 and also flow away in the vicinity of the bearing shaft 29 of the impression roller 4. This flushing with compressed air protects the annular gap 15 and its opening areas against the ingress of contaminants. This is advantageously done completely without contact.
  • the supply line for compressed air to the individual nozzles 18 is designed as a ring line 42 cast into the electrode carrier 12, which can be connected to the compressed air source P shown in FIG. 2.
  • these conduction means 21 can be in the form of a conductor foil 22 which extends continuously over the entire layer surface, or they can be conduction strips 23 (FIG 3), which form electrically conductive peripheral segments within the outer jacket layer 5.
  • the conduction means 21 can also be conductor tracks running axially in the outer jacket layer, a large number of which can be arranged next to one another in the circumferential direction so that the outer jacket layer 5 is traversed by these conductor tracks in a grid pattern. The circumferential distance between the conductor tracks is expediently chosen so that the electrostatic charge on the outer jacket layer can be distributed evenly between adjacent conductor tracks.
  • substrate webs 3 of different widths should be printed using one and the same impression roller 4. If, for example, the entire outer jacket layer 5 were electrostatically charged in the case of a narrow substrate web 3, which only covers about a third of the impression roller length, the areas outside the substrate web could undesirably take off ink from the printing cylinder 2 due to their electrostatic charge. It is therefore advantageous for universal use of an impression roller if its electrostatically chargeable outer jacket layer 5 can be electrostatically charged in each case approximately according to the width of the substrate web 3 to be printed. 3, the charge can be induced on individual conduction bands 23, while others can remain essentially charge-free.
  • the contact bridges 39 are designed as thin steel strings 36, which are assigned to the respective conduction band 23 to be controlled. These steel strings 36 are connected to the inductor ring 24 by being pushed into small axial bores 40 which are distributed over the circumference of the inductor ring.
  • the contact bridges 39 could also ver with the conduction tapes 23 and the hollow cylinder wall structure of the impression roller be bound conductors into which suitable high-voltage switching elements are introduced in order to be able to connect the respective conductors to the inductor ring 24.
  • the embodiment of the inductor device 7 shown in FIG. 4 is used for impression rollers 4, the outer jacket layer 5 of which is not to be electrostatically charged over its entire circumferential surface, but rather only in a circumferentially limited area, which is preferably in front of the printing nip 6 in the running direction.
  • the internal view of the inductor device 7, shown schematically in FIG. 4, shows the electrode carrier 12 with the circumferential groove 16, into which the compressed air nozzle 18 opens. As indicated, several such compressed air nozzles could be provided on the circumference of the ring. In this embodiment too, the flushing of the air ring gap 15 (FIG. 2) can be replaced by sealing measures in the manner described with reference to FIG. 2.
  • a plurality of inductor electrodes 9 are provided in an angular segment 47 of the electrode carrier 12, the electrode tips 11 of which protrude into the part of the circumferential groove 16 delimited by the angular segment 47. In the area of the electrode carrier 12 lying outside of this angular segment 47 there are no electrodes which supply high voltage.
  • the angular segment defines an angular range of approximately 90 ° -120 ° of the circumferential groove 16.
  • the line means 21 on the press roller side are indicated in FIG. 4 with a dash-dotted circular line.
  • the outer casing layer 5 of the impression roller 4 is provided for the purpose described above with such conduit means 21 which distribute the electrostatic charge applied on the end face in the axial direction of the roller and at the same time in the running direction over the limited area mentioned.
  • An exemplary embodiment of such line means are the conductor tracks described axially lying in the outer jacket layer and distributed in the circumferential direction, by means of which the impression roller, e.g. B. can be charged to a predetermined width.
  • Another variant of such conduit means can be that the conduit bands 23 described with reference to FIG.
  • FIG. 3 do not run continuously around the impression roller in the direction of rotation, but are designed as a row of conductive peripheral sectors 45 one behind the other, as shown schematically in FIG. 4.
  • the peripheral sectors 45 are actuated, similarly as shown in FIG. 3, via an inductor segment ring 46 (FIG. 4) on the front edge of the electrically insulating jacket 20 of the impression roller 4 and the contact bridges 39 of different lengths.
  • the inductor ring 24 is made continuously conductive in the circumferential direction.
  • the inductor segment ring 46 according to FIG. 4 is constructed in the manner of a collector in which conductive and non-conductive segment surfaces alternate in the circumferential direction. The segment length depends on the length of the peripheral sectors 45 and the corresponding loading requirements.
  • three of the small axial bores 40 as shown in FIG. 3, are shown schematically in each inductor segment surface of the ring 46.
  • the outer jacket layer 5 After the electrostatically charged section of the outer jacket layer 5 has passed through the pressure gap 6, the outer jacket layer 5 is essentially charge-free and remains so until it reaches the angular segment 47 again.
  • This keeping the surface of the impression roller 4 free of electrostatic charge in the area of the impression roller lying outside the roller section required for the printing process offers the particular advantage that the outer jacket layer 5 can hardly attract layer-contaminating particles from the environment.
  • the ionizer 32 shown on the outlet side of the substrate web 3 in FIG. 1 can advantageously also be omitted.
  • the entire inductor device 7 can be rotated relative to the impression roller.
  • a graduation 48 is applied on the outside of the electrode carrier 12, which graduates the respective position of the angular segment 47, preferably with respect to the center of the pressure gap, via a fixed rotational position marking 49 6 (line 49 in Fig. 4).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Methods (AREA)
  • Rotary Presses (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Microscoopes, Condenser (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (13)

1. Elément d'impression (1), en particulier dispositif d'héliogravure à auxiliaire d'impression électrostatique pour favoriser le transfert de l'encre d'un cylindre d'impression (2) sur une bande de substrat diélectrique (3), dans une emprise (6) formée entre la surface du cylindre d'impression et une couche de chemisage externe pouvant être chargée électrostatiquement (5) d'un rouleau presseur (4), comportant un dispositif inducteur (7) alimenté sous haute tension pour charger électrostatiquement au moins une section de la couche de chemisage externe (5) du rouleau presseur (4) arrivant chaque fois dans l'emprise, caractérisé en ce que le dispositif inducteur (7) est monté sur au moins une face d'about (14) du rouleau presseur (4) et comporte au moins une électrode d'inducteur (9) connectée à une amenée de haute tension (8), qui est prévue à côté d'un bord d'about (10) de la couche de chemisage externe (5), masquée contre un accès extérieur, et est orientée par une pointe d'électrode (11) vers ce bord latéral d'about pour appliquer la charge électrostatique sans contact sur la couche de chemisage externe.
2. Elément d'impression suivant la revendication 1, caractérisé en ce que le dispositif inducteur (7) comporte un porte-électrodes (12) qui, à la manière d'une coiffe, recouvre au moins le bord latéral d'about (10) de la couche de chemisage externe (5) concentriquement sur toute sa circonférence et épouse ainsi par sa face interne (13) qui est tournée vers le bord d'about et, le cas échéant, s'étend sur une surface annulaire d'about (35) de la face d'about (14) du rouleau presseur (4), à peu près le profil extérieur du bord d'about (10) ou de la face annulaire (35), de telle façon qu'entre le porte-électrodes (12) et les faces d'about (14) du rouleau presseur est ménagé un interstice annulaire d'air (15), qu'une gorge annulaire (16) est prévue dans cet interstice annulaire d'air, en opposition au bord d'about de la couche de chemisage externe, plusieurs électrodes d'inducteur (9) étant scellées dans cette gorge annulaire et leurs pointes d'électrodes (11) orientées vers le bord latéral d'about s'étendant dans la gorge annulaire.
3. Elément d'impression suivant la revendication 2, caractérisé en ce que les électrodes d'inducteur (9) sont réparties sur la circonférence de la gorge annulaire à des distances à peu près égales.
4. Elément d'impression suivant la revendication 2 ou 3, caractérisé en ce qu'entre le porte-électrodes (12) et la couche de chemisage externe (5) ainsi que la surface annulaire d'about (35) du rouleau presseur (4) sont prévus des éléments d'étanchéité (17) pontant l'interstice annulaire d'air (15).
5. Elément d'impression suivant la revendication 2 ou 3, caractérisé en ce que plusieurs ajutages d'air comprimé (18) sont prévus dans la gorge annulaire (16) du porte-électrodes (12), répartis sur la circonférence de la gorge annulaire, et sont raccordés à une source d'air comprimé (P) pour balayer l'interstice annulaire d'air (15).
6. Elément d'impression suivant l'une quelconque des revendications 1 à 5, caractérisé en ce qu'un dispositif inducteur (17) est chaque fois prévu au niveau des deux faces d'about (14) du rouleau presseur (4).
7. Elément d'impression suivant l'une quelconque des revendications 1 à 6, selon lequel la couche de chemisage externe (5) pouvant être chargée électrostatiquement du rouleau presseur (4) est faite d'une matière semi-conductrice et est appliquée sur une chemise isolante électrique (20) à constante diélectrique élevée recouvrant la totalité de la surface extérieure d'un cylindre presseur creux métallique (19) et au moins la surface annulaire d'about (14) du rouleau presseur opposée au dispositif inducteur (7), caractérisé en ce que la couche de chemisage externe (5) est pourvue de moyens conducteurs (21) qui sont connectés de manière conductrice électrique au moins à une partie de la surface de la couche et qui ressortent de cette couche de chemisage externe (5) au niveau de son bord latéral d'about (10) de manière à être opposée aux pointes d'électrodes (11).
8. Elément d'impression suivant la revendication 7, caractérisé en ce qu'à titre de moyen conducteur (21) est prévue une feuille de clinquant conductrice (22) noyée dans la couche de chemisage externe (5) et s'étendant sans discontinuité sur la totalité de la surface de cette couche.
9. Elément d'impression suivant la revendication 7, caractérisé en ce que les moyens conducteurs (21) comportent plusieurs bandes conductrices (23) noyées dans le sens circonférentiel de la couche de chemisage externe (5), qui sont disposées les unes à côté des autres chaque fois à une distance (A), axialement sur la longueur du rouleau presseur (4), les moyens conducteurs comprennent, en outre, un anneau inducteur (24) opposé aux pointes d'électrodes (11) dans le porte-électrodes (12), qui est appliqué sur la chemise isolante électrique (20) et finalement des ponts de contact (39) qui peuvent être utilisés entre l'anneau inducteur et les bandes conductrices pour connecter de façon conductrice à l'anneau inducteur toutes les bandes conductrices, certaines d'entre elles ou une seule bande conductrice.
10. Elément d'impression suivant les revendications 2 et 6, dans lequel les moyens conducteurs (21) dans la couche de chemisage externe (5), comprennent, au moins dans le sens circonférentiel du rouleau presseur (4), une série de secteurs circonférentiels conducteurs de haute tension (45) disposés les uns derrière les autres et séparés par des sections de conductivité de charge plus faible, qui sont chaque fois connectées à une surface de segment conductrice d'un anneau segmentaire d'inducteur (46) prévu sur le bord latéral d'about (10), caractérisé en ce que, dans la gorge annulaire (16), plusieurs électrodes d'inducteur (9) sont prévues simplement à l'intérieur d'un segment angulaire (47) du porte-électrodes (12) et le porte-électrodes (12) est déplaçable dans le sens circonférentiel du rouleau presseur (4) d'une manière telle que la position des électrodes dans le segment angulaire (47) puisse être modifiée au moins dans le voisinage de l'emprise (6).
11. Elément d'impression suivant la revendication 10, caractérisé en ce que le segment angulaire (47) sous-tend une zone d'environ 90 à 120° du porte-électrodes (12).
12. Elément d'impression suivant la revendication 10 ou 11, caractérisé en ce qu'une échelle en degrés (48) est prévue sur la face externe du porte-électrodes (12) et indique en regard d'un index de position angulaire fixe (19) la position de rotation respective du segment angulaire (47) avec référence au milieu de l'emprise (6).
13. Elément d'impression suivant la revendication 9 ou 10, caractérisé en ce que l'anneau inducteur (24) ou l'anneau segmentaire inducteur (46) comporte plusieurs petites forures axiales (40) réparties circonférentiellement et les ponts de contact (39) associés aux bandes conductrices (23) ou aux secteurs circonférentiels (45) sont des tiges d'acier (36) adaptées aux forures axiales, qui peuvent être insérées dans des forures axiales choisies en fonction de la connexion souhaitée entre l'anneau inducteur (24) et une bande conductrice ou plusieurs bandes conductrices, ou entre l'anneau segmentaire inducteur (46) et les secteurs circonférentiels (45).
EP83112743A 1982-12-27 1983-12-17 Dispositif à imprimer avec un champ électrostatique auxiliaire Expired EP0115611B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83112743T ATE25036T1 (de) 1982-12-27 1983-12-17 Druckwerk mit elektrostatischer druckhilfe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7566/82 1982-12-27
CH756682 1982-12-27

Publications (2)

Publication Number Publication Date
EP0115611A1 EP0115611A1 (fr) 1984-08-15
EP0115611B1 true EP0115611B1 (fr) 1987-01-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112743A Expired EP0115611B1 (fr) 1982-12-27 1983-12-17 Dispositif à imprimer avec un champ électrostatique auxiliaire

Country Status (7)

Country Link
US (1) US4539908A (fr)
EP (1) EP0115611B1 (fr)
JP (1) JPS59171652A (fr)
AT (1) ATE25036T1 (fr)
CA (1) CA1212863A (fr)
DE (1) DE3369281D1 (fr)
FI (1) FI73627C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007036587A1 (de) * 2007-08-02 2009-02-05 Mitex Gummifabrik Hans Knott Gmbh Walze zur Ladungsübertragung

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01214881A (ja) * 1988-02-24 1989-08-29 Ricoh Co Ltd 現像ロール
IT1229569B (it) * 1989-04-17 1991-09-04 Giuliani Spa Derivati di acidi biliari, loro preparazione e composizioni farmaceutiche che li contengono.
CH680424A5 (fr) * 1990-02-01 1992-08-31 Escher Wyss Ag
CH682894A5 (de) * 1990-12-20 1993-12-15 Escher Wyss Ag Presseur einer Tiefdruckrotationsmaschine.
FR2677301B1 (fr) * 1991-06-05 1993-12-24 Mira Sarl Dispositif d'assistance electrostatique pour machine d'impression notamment a heliogravure.
US5178071A (en) * 1992-01-23 1993-01-12 American Roller Company Impression roller and method of preparation
DE4204871C2 (de) * 1992-02-18 1995-06-08 Eltex Elektrostatik Gmbh Presseur
US5419246B1 (en) * 1994-08-02 1998-06-09 Kenneth Bibby Method and apparatus for laying a granular pattern
DE4443368A1 (de) * 1994-12-06 1996-06-13 Pogatzki Volkmar W Dr Rotationstiefdruckwerk mit spannungsbeaufschlagtem Presseur
US5706724A (en) * 1996-03-14 1998-01-13 Hurletron, Incorporated High-voltage contact assembly for a gravure press
DE19716325C2 (de) 1997-04-18 2001-04-26 Koenig & Bauer Ag Vorrichtung zum elektrostatischen Aufladen eines mehrlagigen Stranges
ES2173430T5 (es) * 1997-11-27 2006-02-16 Spengler Electronic Ag Disposicion electrostatica para un mecanismo de impresion de huecograbado y flexografica.
US6314879B1 (en) 1999-05-12 2001-11-13 Hurletron Incorporated Flexographic printing apparatus
US7260340B2 (en) * 2004-08-27 2007-08-21 Oce Printing Systems Gmbh System and method for transfer of an electrical voltage to/from a rotating roller
ES2570504T3 (es) * 2007-11-07 2016-05-18 Alfred Doppler Rodillo de contrapresión
DE102008006269B3 (de) * 2008-01-25 2009-05-14 Eltex-Elektrostatik Gmbh Presseur sowie dessen Verwendung
EP2660052A1 (fr) 2012-04-30 2013-11-06 Neopack, S.L. Système et procédé de fixation de substrat imprimable sur toile sur un cylindre d'impression central d'une machine à imprimer et machine d'impression incorporant un tel système
ITUA20162595A1 (it) * 2016-04-14 2017-10-14 Ace Di Barbui Davide & Figli Srl Apparecchiatura per l'assistenza elettrostatica alla stampa a rotocalco.

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930847A (en) * 1956-11-01 1960-03-29 Rca Corp Printer
US3184749A (en) * 1962-02-13 1965-05-18 Burroughs Corp Electrostatic drum printer
US3348232A (en) * 1962-09-05 1967-10-17 Xerox Corp Asynchronous page-at-a-time printer
US3438052A (en) * 1965-11-17 1969-04-08 Xerox Corp Air-supported housing containing tesi printing drum
US3417404A (en) * 1965-11-22 1968-12-17 Stanford Research Inst Electrostatic drum printer
GB1169566A (en) * 1966-11-24 1969-11-05 Crosfield Electronics Ltd Improvements relating to Printing Processes and Apparatus
CH528367A (de) * 1969-12-16 1972-09-30 Polygraph Leipzig Druckwalze mit elektrostatisch wirkenden Mitteln zur Unterstützung der Farbübertragung beim Tiefdruck
JPS4923903B1 (fr) * 1970-09-18 1974-06-19
US3765026A (en) * 1970-11-03 1973-10-09 Xerox Corp Electrographic recording system
US3715640A (en) * 1971-04-14 1973-02-06 Fuji Photo Film Co Ltd Corona charging process and apparatus in electrophotography
US3788844A (en) * 1971-10-05 1974-01-29 Fuji Photo Film Co Ltd Charging method for electrophotography
US3979757A (en) * 1973-04-19 1976-09-07 Kilby Jack S Electrostatic display system with toner applied to head
US3957510A (en) * 1974-04-30 1976-05-18 Xerox Corporation Overflow prevention for liquid between flexible layers on a solid surface
US4049343A (en) * 1975-04-24 1977-09-20 Xerox Corporation Combination imaging and grounding roller
US4005436A (en) * 1975-07-10 1977-01-25 Rca Corporation Apparatus for making a recording of an electrostatic charge pattern
CH619400A5 (fr) * 1977-03-25 1980-09-30 Franz Knopf
DE2713334A1 (de) * 1977-03-25 1978-09-28 Franz Knopf Druckmaschine mit einer elektrostatischen substrat-anpress-einrichtung
DD135883A1 (de) * 1977-10-28 1979-06-06 Klaus Matthias Elektrostatischer drucker
JPS54121809A (en) * 1978-03-08 1979-09-21 Hurletronaltair Inc Ink transfer assistant device
US4364313A (en) * 1981-08-25 1982-12-21 American Roller Company Impression roller with adjustable electrical characteristics and method of making the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007036587A1 (de) * 2007-08-02 2009-02-05 Mitex Gummifabrik Hans Knott Gmbh Walze zur Ladungsübertragung

Also Published As

Publication number Publication date
JPH0377782B2 (fr) 1991-12-11
CA1212863A (fr) 1986-10-21
FI834693A0 (fi) 1983-12-20
EP0115611A1 (fr) 1984-08-15
ATE25036T1 (de) 1987-02-15
FI834693A (fi) 1984-06-28
FI73627B (fi) 1987-07-31
JPS59171652A (ja) 1984-09-28
FI73627C (fi) 1987-11-09
US4539908A (en) 1985-09-10
DE3369281D1 (en) 1987-02-26

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