EP0631209A1 - Druckverfahren mit mindestens einem Bild und einer Presse zur Durchführung dieses Verfahrens - Google Patents

Druckverfahren mit mindestens einem Bild und einer Presse zur Durchführung dieses Verfahrens Download PDF

Info

Publication number
EP0631209A1
EP0631209A1 EP94401375A EP94401375A EP0631209A1 EP 0631209 A1 EP0631209 A1 EP 0631209A1 EP 94401375 A EP94401375 A EP 94401375A EP 94401375 A EP94401375 A EP 94401375A EP 0631209 A1 EP0631209 A1 EP 0631209A1
Authority
EP
European Patent Office
Prior art keywords
press
strip
printing
hardened
image
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
Application number
EP94401375A
Other languages
English (en)
French (fr)
Other versions
EP0631209B1 (de
Inventor
Jean-Jacques Eltgen
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.)
Nipson
Original Assignee
Nipson
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 Nipson filed Critical Nipson
Publication of EP0631209A1 publication Critical patent/EP0631209A1/de
Application granted granted Critical
Publication of EP0631209B1 publication Critical patent/EP0631209B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1075—Mechanical aspects of on-press plate preparation
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/228—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 the process involving the formation of a master, e.g. photocopy-printer machines
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G19/00—Processes using magnetic patterns; Apparatus therefor, i.e. magnetography
    • 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
    • Y10S101/00—Printing
    • Y10S101/48—Endless printing belt for other than selective or progressive printing

Definitions

  • the invention relates to a new printing process and the press for implementing this process.
  • the process of the invention is a hybrid process combining in a way the techniques and advantages of current magnetography with the techniques of magnetolithography as they were exposed in the French patent application entitled “Printing process and press for the implementation "filed on 14.01.93 under number 93 00301 by the company NIPSON and electrostatography techniques.
  • the invention consists in replacing for printing with a conventional ink (oleaginous) the assembly constituted by the engraved plate and the plate-carrying cylinder by a simple cylinder on the periphery of which each time a new pattern is to be printed, is deposited a layer forming a substrate of powdery oleophobic material, uniform layer on which is produced, using an oleophilic curable material, an image corresponding to the patterns to print.
  • the intermediate transfer element therefore consists of the substrate of oleophobic material and the zones of oleophilic material carried by this layer.
  • the oleophobic material is magnetic, and the cylinder is magnetizable, so that the layer of this material is maintained at the periphery of the cylinder by magnetizing the latter.
  • the deposition of the oleophilic material, in a configuration corresponding to the patterns to be printed, is carried out using an electronic, electromechanical or electromagnetic transfer device, data representative of the patterns to be carried on the layer of oleophobic material which are contained in an electronic memory. These data are used so that the transfer device deposits oleophilic material only at the necessary locations on the layer of oleophobic material.
  • the oleophilic material used is a magnetic and fusible material; its deposition on the oleophobic material substrate is effected by magneto-deposition on the cylinder, in the manner of the deposition of magnetic toner in magneto-graphic printers.
  • magnetic heads are arranged near the cylinder, which make it possible to create, on the substrate, zones with magnetization making it possible to attract the particles of oleophilic material.
  • the system described in this patent further comprises, near the periphery of the cylinder, a melting device for fixing the oleophilic material.
  • Printing is carried out as on a conventional press: the cylinder, after having been coated with the substrate layer and patterns, is rotated, then wetted and inked, so that the ink is distributed over the patterns and the wetting product on the oleophobic zones, then the ink is transferred to the printing medium (paper or other) via a blanket.
  • the printing medium paper or other
  • the cylinder When the desired printout of an image is reached, the cylinder is demagnetized, so that the substrate layer spontaneously detaches from the cylinder, carrying with it the hardened patterns, of oleophilic material, which it carries. If the printing of another image is desired, then a new substrate is produced, on which are worn then hardened new patterns.
  • the constitution of the patterns corresponding to an image, as well as their removal, are therefore very rapid and less costly than with conventional presses.
  • This device lends itself to full color printing, insofar as the positioning of the patterns is carried out automatically, by an electronic device.
  • the deposition of the substrate has the function of allowing easy subsequent removal of the oleophilic patterns by forced detachment of this substrate and of preventing the ink from being deposited on the parts of the cylinder not provided with oleophilic material.
  • a device and method for printing an image by transfer of at least one dye vehicle between an intermediate transfer element and a printing medium comprising at least one phase of automatic production of the intermediate transfer element by developing zones on the intermediate element each having a different affinity with the coloring vehicle.
  • the different affinity of the zones is obtained by developing an electrostatic image of the graphic information by exposure of an endless band whose upper layer consists of zinc oxide. Magnetic toner particles are then applied to this surface and adhere according to the electrostatic image developed on the zinc oxide layer. Portions of this surface are magnetized to form a magnetic image corresponding to the electrostatic image. Then the toner particles are transferred by pressure to a copy medium such as paper, while the magnetic image is retained on the surface of the tape. New magnetic particles can then be applied to the magnetic image for the production of additional copies.
  • Such a device has the drawback of using a strip of zinc oxide which is a first generation photoconductor having a very short service life.
  • the main object of the present invention is therefore to overcome the drawbacks of the prior art by proposing a printing process which is low in cost while allowing constant quality and the possibilities of monochrome and polychrome lithographic printing, whatever the envisaged print, without requiring the etching of a plate and without using materials requiring oleophilic or oleophobic qualities to solve the wetting problems, or a blanket.
  • the process of printing at least one image, at a determined print, using a press, by transfer of a coloring vehicle between an intermediate transfer element obtained by imaging magnetic and a printing medium comprising at least: a phase of automatic production of the intermediate transfer element in the press by developing on a substrate zones each having a different affinity with the coloring vehicle, some of which correspond to the image to be printed, is characterized in that a magnetic, insulating and hardenable material is fixed on the substrate to constitute these zones with different affinities, the insulating and curable magnetic material is hardened and subjected to an electrostatic charge by any device capable of charging it on the surface in order to give the areas representative of the image the affinity with the coloring vehicle; the coloring vehicle having electrostatic properties is deposited on the parts of hardened material electrostatically charged and finally the transfer of the coloring vehicle on the printing medium is carried out by direct contact with the intermediate transfer element.
  • the method includes a step of cleaning the transfer member by removing the curable material when a new image is to be printed.
  • the coloring vehicle is previously charged with electrostatic charges of opposite polarity to the charge of the curable material.
  • Another object is to provide a press allowing the implementation of the method according to the invention.
  • the printing press comprising means for depositing a material at determined locations representative of an image on an endless belt carried by rollers enabling it to be set in motion
  • the belt endless is metallic
  • the deposited material is hardenable and the press comprises at least one station for electrostatically charging the hardened material and a station delivering a coloring vehicle having electrostatic properties to adhere to the hardened material after it has hardened in order to constitute the patterns to be transferred to the print medium.
  • the press includes means for removing and cleaning the hardened material.
  • the press includes the means for electrostatically charging the hardened material with a charge of given polarity.
  • the electrostatic charge of the hardened material is obtained by a corona device.
  • the press comprises means for loading the coloring vehicle with a polarity opposite to that of the hardened material.
  • the charge of the coloring vehicle is triboelectric and the press comprises in the means for delivering the coloring vehicle a device ensuring the mixing of the coloring vehicle so as to cause the charging of the particles by friction.
  • the press shown in FIG. 1 allows the deposition of a fusible material 1 on an endless metal strip 2, in order to constitute the intermediate element supporting the patterns corresponding to an image to be printed on a printing medium 3 such as paper fed continuously.
  • the endless belt, carried by carrier rollers 4, 5, 6, 7, 8 is in contact with the printing medium, such as paper 3, using a pressure roller 90.
  • the fusible material 1 is pulverulent and magnetic, and is contained in a reservoir 10 before it is deposited on the endless strip 2.
  • a device 21 for magnetically transferring the fusible material 1 from the reservoir to the strip is provided and allows the curable material 1 used to be a magnetic material, curable by melting, polymerization, or other process.
  • the substrate, formed by the endless band is a material itself magnetizable.
  • a device 21 for placing the material 1, at the appropriate locations on the strip 2 is composed on the one hand of a reservoir 210 of material provided with an outlet opening and placed on the side of the face of the strip 2 which is in contact with the printing medium 3, and on the other hand with an excitation device 211 with magnetic heads, placed on the other side of the strip, that is to say inside of the space bounded by the endless band.
  • This excitation device makes it possible to selectively excite determined points of the strip to magnetize it and to attract at these points the material 1 contained in the tank, in order to form zones there where one can develop an affinity with the vehicle. dye (ink) used.
  • the magnetic head assembly (211) is movable relative to the strip, to compensate for the spacing between the heads and to provide high print quality patterns on the strip.
  • the dimensions of the endless strip 2 should make it possible to reproduce therein the largest image intended to be printed with the press, that is to say that, for example, the developed length and the width of the strip 2 are respectively at least equal to those of this image.
  • the material 1, after having been transferred to the metal strip 2, is fixed firmly on the latter. As already indicated, this operation makes it possible to avoid dismantling the patterns during printing.
  • this fixing is carried out by heating, then allowing to cool, the material.
  • at least one heating member 14 is provided in the vicinity of the strip 2, taking account of the direction of travel (illustrated by arrows) thereof, so that the material can be fixed immediately after being deposited, and acts on the entire width of the strip, and on a small length portion thereof.
  • this member 14 is arranged opposite the surface of the strip which receives the fusible material 1, so that its action is as effective as possible.
  • at least one other heating member 15, facing the first 14, and facing the surface of the strip opposite to that which receives the material it is conceivable to have at least one other heating member 15, facing the first 14, and facing the surface of the strip opposite to that which receives the material.
  • a heated part of it cools as soon as it leaves the zone, of short length, heated by the means 14, 15, so that the hardening is very fast. In this way, the material adheres to the substrate (strip) by the bonding forces, the magnetic forces only intervening during the development of the magnetic image.
  • the material used is hardenable and fixable by natural or forced polymerization, for example by exposing it to ultraviolet radiation.
  • the member 14, that is to say the one disposed opposite the surface of the strip which receives the fusible material 1 would be replaced by an appropriate radiation source. No source corresponding to the member 15 would be provided opposite, since the radiation would be stopped by the band 2.
  • the magnetic transfer device 211 and the heating members 14, 15 are only put into operation when it is necessary, to constitute areas representative of the image on the thin strip 2.
  • the hardened material 1 magnetically secured to the strip 2 is brought to a station 16 for corona charging where a corona wire 161 electrostatically charges this material 1.
  • a material may be used as a magnetographic toner which, by the magnetic compounds which it contains, has a low colorability potential but by the polymerizable materials allowing its hardening is very insulating (resistivity between 1012 and 1014 ohms.cm) which allows it to charge electrostatically without problem while the metal strip 2 which it is conductive will not retain any electrostatic charge.
  • At the exit from this station there is therefore a substrate 2 coated in places with areas covered with a hardened material having a different affinity with the coloring vehicle which is deposited therein at the inking station 17.
  • This coloring vehicle 9 will consist of advantageously by an electrostatic toner having a good colorability potential.
  • This toner 9 will deposit on the areas having affinities, that is to say on the areas coated with the hardened material electrostatically charged.
  • the inking station 17 will for example comprise two rollers 171, 172 ensuring an internal mixing of the toner made up largely of polymers to thus charge this toner by triboelectricity, in the case of a solid electrostatic toner then used in conjunction with a support (carrier) as is known in the state of the prior art of electrophotography.
  • liquid electrostatic toners may be used, the toner consisting of fine coloring particles, the carrier then consisting of a liquid having the required dielectric characteristics, as is also known in the state of the prior art ..
  • the charges thus developed in the toner will preferably have the opposite polarity to those developed on the hardened magnetic material 1.
  • the electrostatic toner 9 is transferred to the printing medium 3 and only the hardened magnetic material 1 remains on the substrate 2.
  • the press includes a device for removing the material, which is put into service when the drawing of an image is reached, to allow the dismantling of the intermediate transfer device without damaging the substrate formed by the surface of the thin strip 2.
  • the removal device comprises means 18 for recasting the material, such as heating members, cleaning means 19 such as scrapers or squeegees and, optionally, a material recovery tank 20.
  • the means 18 for recasting and those 19 for cleaning are arranged relatively to one another and to the strip so that the areas to be cleaned are heated, so that the material 1 is at least partially remelted, before undergoing the action of the means 19 cleaning, and so that the recasting continues when the cleaning means are active.
  • FIG. 1 makes it possible to meet these constraints: the recasting means 18 are arranged facing the surface of the strip opposite to that which receives the material, and the cleaning means 19 are on the side of the surface which supports the material.
  • the means are opposite only part of the recasting means, so that there is a press area where the zones of the strip to be cleaned undergo the simultaneous action of the recasting means 18 and of those 19 cleaning.
  • the removal device is arranged in such a way that the action of the cleaning means 19 is facilitated by natural gravity.
  • Figure 1 illustrates how this device should be placed for this action to be optimal.
  • the cleaning means are positioned so as to act on a horizontal part of the strip, the surface to be cleaned facing the ground. Thus the material, after being remelted, tends to fall spontaneously by gravity into the recovery tank 20 which then placed below.
  • removal device may be any suitable removal device. It is sufficient for the removal device to act on a part of the strip arranged according to a more or less significant slope, directed towards the ground.
  • the low thermal inertia of the metal strip means that, as soon as a part is no longer subjected to the radiation of the device recast, it cools very quickly, allowing the almost immediate constitution of a new intermediate transfer element.
  • the means 19, 20 for cleaning and recovery are present, but the recasting means are replaced by means making it possible to spray the chemical agent. These are arranged so that, on the one hand, the chemical attack on the material 1 is initiated before it comes into contact with the cleaning means to facilitate their action and, on the other hand, so that their action is totally effective.
  • the device shown in Figure 1 allows only monochrome printing, since it only has one press and / or inking station.
  • the device of Figure 2 allows polychrome printing sheet by sheet that is to say, the printing of a support 3 in the form of independent sheets.
  • the device of FIG. 2 allows a polychrome sheet-by-sheet printing using for example 3 colors (red, green and blue) in the case of an additive synthesis, generally better suited to the case of solid electrostatic toners, or four colors including three of base (yellow, cyan, magenta) and black in the case of a subtractive synthesis generally better suited to the case of liquid electrostatic toners.
  • This device consists of four inking stations A, B, C, D placed one after the other, and controlled by a single servo and control device (not shown).
  • the four inking stations (17A, 17B, 17C, 17D) are identical, and each correspond to that (17) described with reference to FIG. 1, that is to say that they comprise each a device for transferring a coloring vehicle 9 having electrostatic properties on the strip 2 coated with a curable material 1. It is understood that this representation is not limiting, and that the device could contain presses corresponding to those described with reference to Figure 1.
  • the first station 17A is used for example for printing yellow patterns, the second 17B for printing cyan patterns, the third 17C for printing magenta patterns, the fourth 17D for printing black patterns.
  • the sheets of paper 3 are brought into contact with the transfer roller 26 of this press.
  • the essential differences between the press of FIG. 2 and those of FIG. 1 as regards the supply of paper are as follows: the press is associated with a device 25, known per se and not shown in detail, for feeding cut sheet, a sheet cylinder 26, and a device 27 for recovering printed sheets.
  • the sheet cylinder 26 is in contact with the periphery of the strip 2, so that the rotational movement of the strip is transmitted to the cylinder 26, making it possible to transfer the image to a sheet carried by the cylinder 26.
  • a paper feed device could be adapted on the press of Figure 1 without changing the spirit of the invention.
  • the single control device controls both the magnetic transfer device 21 so that the pattern is correctly positioned and that the final image is of integrity. Likewise, it controls the heating members 14, 15, the electrostatic charge inking device 16, a single inking device at a time 17A to 17D and finally the device 18,19,20 for removing the hardenable material.
  • the dimensions of the strip are such that it is possible to successively and adjacent thereto form the basic patterns corresponding to the separation of the colors making it possible to constitute a given image.
  • the length the developed web should be at least three times the circumference of the sheet cylinder which determines the dimensions of the largest printable image.
  • control and control means (not shown) of the press make it possible to select and activate synchronously an inking station, for example 17A with the passage of the corresponding basic image.
  • the servo and control means are such that the same sheet remains for at least three turns on the sheet cylinder, so that each turn, one of the basic images can be printed. , so that the final image, which synthesizes at least three colors, appears on the sheet after at least three turns.
  • the length of the strip is not linked to the maximum dimension of the sheets to be printed, but is less than three or four times this dimension, depending on whether the printing is in three or four colors, it is nevertheless possible to perform full color printing, but it is then necessary to clean the strip one or more times when printing each sheet, and to separately constitute the various patterns corresponding to the final image to be obtained, which results in a reduction in speed d 'impression. when it comes to making large prints.
  • the polychrome document printing device can be produced using n presses of the type of FIG. 1 and each having a single station (17) for applying a coloring vehicle, each station containing a color of base different from another, and in that it is arranged so that the print medium passes successively in front of each of these presses.
  • the presses according to the invention make it possible to obtain images of very good quality, with a print density comparable to that of lithographic presses.
  • FIG. 3 represents in more detail the stages of the printing process of the invention by magnetoelectrostatography.
  • This method comprises a first step on which an area of the strip subjected to a magnetic field attracts particles 11 of a powdered magnetographic toner.
  • the second step represents the melting of these powdery toner particles 11 to form a hardened substrate 1 which is held on the strip possibly by the remanent magnetism developed by the latter in the vicinity of the substrate but especially by the bonding forces of the polymers on the metal strip.
  • the third step represents the surface charge of the hardened substrate 1 by electrostatic charges when passing through the corona station. This operation develops electrostatic charges on the surface of the molten substrate 1 which is made up of 60 to 90% polymer, to form the charged substrate 10.
  • the fourth step represents the deposition on the charged substrate 10 of an electrostatic toner 9 charged with a polarity opposite to that of the charge of the cured substrate 10.
  • the method described provides the advantages of producing a resistant medium by melting the magnetographic toner while eliminating the problems of wetting solution or the presence of the blanket as in the magnetolithography process.
  • this process by the fact that it uses electrostatic toners makes it possible to have better colorability than with magnetographic toners because these electrostatic toners in principle give access to all the colors.
  • the step of remelting the magnetographic toner makes it possible to easily change the image on the tape.
  • the strip provided with the hardened substrate can be regularly recharged by the corotron (corona tube) at each turn (for each copy) without this requiring a new imaging phase.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Printing Methods (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
EP94401375A 1993-06-23 1994-06-20 Druckverfahren mit mindestens einem Bild und einer Presse zur Durchführung dieses Verfahrens Expired - Lifetime EP0631209B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9307608 1993-06-23
FR9307608A FR2709572B1 (fr) 1993-06-23 1993-06-23 Procédé d'impression d'au moins une image et presse pour la mise en Óoeuvre.

Publications (2)

Publication Number Publication Date
EP0631209A1 true EP0631209A1 (de) 1994-12-28
EP0631209B1 EP0631209B1 (de) 1997-12-03

Family

ID=9448453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94401375A Expired - Lifetime EP0631209B1 (de) 1993-06-23 1994-06-20 Druckverfahren mit mindestens einem Bild und einer Presse zur Durchführung dieses Verfahrens

Country Status (6)

Country Link
US (1) US5644987A (de)
EP (1) EP0631209B1 (de)
JP (1) JP2763494B2 (de)
CA (1) CA2126283A1 (de)
DE (1) DE69407099T2 (de)
FR (1) FR2709572B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0989469A1 (de) * 1998-09-21 2000-03-29 Mitsubishi Heavy Industries, Ltd. Drucker und Verfahren zum Ausbessern von Druckplatten
US6320529B1 (en) 1998-09-29 2001-11-20 Kabushiki Kaisha Toshiba A/D conversion apparatus and a radio apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE390286T1 (de) * 2000-05-17 2008-04-15 Eastman Kodak Co Verfahren zur einstellung des registers bei einer mehrfarbendruckmaschine
DE10032703A1 (de) * 2000-07-05 2002-01-17 Koenig & Bauer Ag Verfahren und Einrichtung in Druckmaschinen zum Bebildern von Oberflächen
US9251458B2 (en) 2011-09-11 2016-02-02 Féinics Amatech Teoranta Selective deposition of magnetic particles and using magnetic material as a carrier medium to deposit nanoparticles
EP2784724A3 (de) 2013-03-27 2015-04-22 Féinics AmaTech Teoranta Selektive Abscheidung von magnetischen Teilchen und Verwendung von magnetischem Material als Trägermedium zur Abscheidung anderer Teilchen

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804511A (en) * 1970-07-29 1974-04-16 Pelorex Corp Method and apparatus utilizing magnetic storage for transferring graphical information
US4122456A (en) * 1977-05-05 1978-10-24 General Electric Company Printing head and brush configuration for a magnetic printer
EP0029877A1 (de) * 1979-07-26 1981-06-10 GENICOM Corporation Magnetischer Druckkopf und Verfahren zur Herstellung
JPS5719761A (en) * 1980-07-10 1982-02-02 Ricoh Co Ltd Electrostatic printing method
JPS58145970A (ja) * 1982-02-24 1983-08-31 Konishiroku Photo Ind Co Ltd 画像形成装置
EP0097954A1 (de) * 1982-06-28 1984-01-11 E.I. Du Pont De Nemours And Company Elektrostatisches Druckverfahren
US4514744A (en) * 1982-09-24 1985-04-30 Fuji Xerox Co., Ltd. Electrostatic copying device employing thermally fluidizable medium on photosensitive belt
JPS60172065A (ja) * 1984-02-16 1985-09-05 Fuji Xerox Co Ltd 磁気記録装置
US5129321A (en) * 1991-07-08 1992-07-14 Rockwell International Corporation Direct-to-press imaging system for use in lithographic printing
US5140370A (en) * 1989-03-16 1992-08-18 Kabushiki Kaisha Toshiba Image forming apparatus for forming a master copy

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3167482D1 (en) * 1980-09-03 1985-01-10 Crosfield Electronics Ltd Improvements relating to rotary printing presses
US4636449A (en) * 1982-06-28 1987-01-13 E. I. Du Pont De Nemours And Company Electrostatic printing process
JPS6158754A (ja) * 1984-08-30 1986-03-26 Fujitsu Ltd カラ−記録装置
JPS63135248A (ja) * 1986-11-28 1988-06-07 Mitsubishi Heavy Ind Ltd オフセツト印刷機
JPH01274163A (ja) * 1988-04-27 1989-11-01 Toshiba Corp 画像形成装置
JPH0317675A (ja) * 1989-06-15 1991-01-25 Toshiba Corp 画像形成装置
US5016062A (en) * 1990-01-02 1991-05-14 Eastman Kodak Company Multicolor image forming apparatus having improved registration
EP0512549B2 (de) * 1991-05-10 2002-09-25 Fuji Photo Film Co., Ltd. Druckmaschine
US5351617A (en) * 1992-07-20 1994-10-04 Presstek, Inc. Method for laser-discharge imaging a printing plate

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804511A (en) * 1970-07-29 1974-04-16 Pelorex Corp Method and apparatus utilizing magnetic storage for transferring graphical information
US4122456A (en) * 1977-05-05 1978-10-24 General Electric Company Printing head and brush configuration for a magnetic printer
EP0029877A1 (de) * 1979-07-26 1981-06-10 GENICOM Corporation Magnetischer Druckkopf und Verfahren zur Herstellung
JPS5719761A (en) * 1980-07-10 1982-02-02 Ricoh Co Ltd Electrostatic printing method
JPS58145970A (ja) * 1982-02-24 1983-08-31 Konishiroku Photo Ind Co Ltd 画像形成装置
EP0097954A1 (de) * 1982-06-28 1984-01-11 E.I. Du Pont De Nemours And Company Elektrostatisches Druckverfahren
US4514744A (en) * 1982-09-24 1985-04-30 Fuji Xerox Co., Ltd. Electrostatic copying device employing thermally fluidizable medium on photosensitive belt
JPS60172065A (ja) * 1984-02-16 1985-09-05 Fuji Xerox Co Ltd 磁気記録装置
US5140370A (en) * 1989-03-16 1992-08-18 Kabushiki Kaisha Toshiba Image forming apparatus for forming a master copy
US5129321A (en) * 1991-07-08 1992-07-14 Rockwell International Corporation Direct-to-press imaging system for use in lithographic printing

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 19 (P - 423)<2076> 24 January 1986 (1986-01-24) *
PATENT ABSTRACTS OF JAPAN vol. 6, no. 82 (P - 116)<960> 20 May 1982 (1982-05-20) *
PATENT ABSTRACTS OF JAPAN vol. 7, no. 262 (P - 238)<1407> 22 November 1983 (1983-11-22) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0989469A1 (de) * 1998-09-21 2000-03-29 Mitsubishi Heavy Industries, Ltd. Drucker und Verfahren zum Ausbessern von Druckplatten
US6320529B1 (en) 1998-09-29 2001-11-20 Kabushiki Kaisha Toshiba A/D conversion apparatus and a radio apparatus

Also Published As

Publication number Publication date
JP2763494B2 (ja) 1998-06-11
US5644987A (en) 1997-07-08
DE69407099T2 (de) 1998-03-26
JPH07146604A (ja) 1995-06-06
EP0631209B1 (de) 1997-12-03
FR2709572A1 (fr) 1995-03-10
CA2126283A1 (fr) 1994-12-24
FR2709572B1 (fr) 1995-10-27
DE69407099D1 (de) 1998-01-15

Similar Documents

Publication Publication Date Title
US4935788A (en) Multicolor printing system
EP0333880A1 (de) Mehrfarbendruckverfahren für behälter
WO2001082003A1 (fr) Appareil electrographique de developpement liquide
JP2004034688A (ja) トナー像の被覆
US5815779A (en) System for conditioning liquid ink in a liquid ink type electrostatographic system
EP0631209B1 (de) Druckverfahren mit mindestens einem Bild und einer Presse zur Durchführung dieses Verfahrens
JPH0511566A (ja) 画像形成方法及び装置
US5723251A (en) Method and apparatus for removing liquid carrier in a liquid developing material-based electrostatographic printing system
US4514744A (en) Electrostatic copying device employing thermally fluidizable medium on photosensitive belt
US5344731A (en) Migration imaging system
US5655192A (en) Method and apparatus for compaction of a liquid ink developed image in a liquid ink type electrostatographic system
JPH11272096A (ja) 湿式電子写真方式プリンタの転写ロ―ラクリ―ニング装置
EP0607081B1 (de) Druckverfahren und Presse für die Herstellung
US5237368A (en) Method and apparatus for forming an image with a reversible thermosensitive medium
US4255508A (en) Flexible metal printing cylinder having a coating of crystalline photoconductive material
JP2001305887A (ja) 液体現像電子写真装置
JPH0212162A (ja) 静電印刷装置
JPH04101882A (ja) 通電昇華印字装置
JPH05249861A (ja) フューザロール
JPH1016392A (ja) レーザ画像形成方法及び装置
JPH01301279A (ja) 容器の多色印刷方法
JPH11272079A (ja) 湿式画像形成装置
JPS60169881A (ja) 磁気印刷方法
JPH01266560A (ja) 画像形成装置
JPH07186533A (ja) 画像記録装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES FR GB IT LI NL

17P Request for examination filed

Effective date: 19950113

17Q First examination report despatched

Effective date: 19960911

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES FR GB IT LI NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19971203

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19971203

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69407099

Country of ref document: DE

Date of ref document: 19980115

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19971223

ITF It: translation for a ep patent filed

Owner name: FUMERO BREVETTI S.N.C.

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980630

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980630

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: NIPSON

Effective date: 19980630

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000511

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000828

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010620

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010620

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050620

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20110721

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120702