WO1989003545A1 - Production of formes using washable image carriers - Google Patents

Production of formes using washable image carriers Download PDF

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Publication number
WO1989003545A1
WO1989003545A1 PCT/DE1988/000620 DE8800620W WO8903545A1 WO 1989003545 A1 WO1989003545 A1 WO 1989003545A1 DE 8800620 W DE8800620 W DE 8800620W WO 8903545 A1 WO8903545 A1 WO 8903545A1
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WO
WIPO (PCT)
Prior art keywords
production
line
printing
light
template
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Application number
PCT/DE1988/000620
Other languages
German (de)
French (fr)
Inventor
Helma Meintz
Original Assignee
Dr.-Ing. Rudolf Hell Gmbh
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Publication date
Application filed by Dr.-Ing. Rudolf Hell Gmbh filed Critical Dr.-Ing. Rudolf Hell Gmbh
Publication of WO1989003545A1 publication Critical patent/WO1989003545A1/en

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
    • G03F1/54—Absorbers, e.g. of opaque materials
    • G03F1/56—Organic absorbers, e.g. of photo-resists
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F3/00—Colour separation; Correction of tonal value
    • G03F3/10—Checking the colour or tonal value of separation negatives or positives
    • G03F3/107—Checking the colour or tonal value of separation negatives or positives using silver halide photosensitive materials

Definitions

  • the present invention relates to a process for the production "of printing forms, in which an original artwork point and zeilen ⁇ is scanned opto-electronically, the scanning signals thereby obtained are converted into digital image signals, and the digital image signals, a light source to the point and line by line recording of the original on control a light-sensitive recording medium.
  • films or photographic material which have a strongly silver-containing emulsion layer, the development of the latent image being carried out using chemically aggressive agents which emit aggressive vapors and make it necessary to dispose of the used developer liquid, which as is known, is very hostile to the environment.
  • the present invention is therefore based on the objects of improving the image quality, simplifying the printing form production process and making the entire process more environmentally friendly.
  • the invention achieves this in that when recording the original on a light-sensitive recording medium by means of a light source, a recording medium is used which has a black (non-translucent) washable layer which is cured at the exposed areas and at the unexposed areas can be washed out, the layer being applied to a white carrier material which is resistant to washing out.
  • the washed-out recording material is used directly as a printing template for the production of the printing form, the white carrier material preferably being UV-transparent for the production of offset or gravure printing forms.
  • the production of offset printing forms takes place directly by exposing offset plates to UV light by means of a contact copy with the recording medium which has been exposed point by point and line by line from the light source.
  • the production of etched gravure forms takes place by exposing gravure forms coated with pre-screened pigment paper with UV light by means of a contact copy with the aforementioned master.
  • the production of screened low pressure molds takes place in that the aforementioned printing template serves as a scanning template for the engraving machine.
  • the recording material used for the printing template is characterized by the fact that it consists of white paper felt or the like coated on both sides, the coating consisting of transparent plastic and a black (non-translucent) washable layer on one of the coated sides of the material is applied, which is cured in the exposed areas and can be washed out in the unexposed areas, preferably using a coating which is sold under the name "Wolf", ie wash-off line film, by Dupont for the production of transparent film material is used.
  • a coating which is sold under the name "Wolf”, ie wash-off line film by Dupont for the production of transparent film material is used.
  • This layer is black in the unprocessed state and the image is created by a kind of subtractive method, ie unexposed parts are removed during the processing process.
  • the layer contains small amounts of silver, which is used for latency imaging. With this layer, excellent edge sharpness and optimal density can be achieved, and the layer can be processed by means of laser beams in the UV region of the spectrum and is therefore excellently suited as a recording medium for facsimile transmissions from newspaper pages or computer-to-plate technology in offset printing.
  • the emulsion layer contains very little silver and is a combination of gelatin with a black pigment of high concentration. Exposure forms a latent image in the emulsion layer.
  • the very low silver content of the emulsion layer is about 25% of the content of conventional emulsions for graphic films, but is not sufficient to produce a visible image through development.
  • the activator penetrates the protective layer in a special "Wolf" processor, releasing the tanning agent it contains into the emulsion layer. This sets in motion a crosslinking reaction, as a result of which the latent image areas harden and the black pigments are anchored in the gelatin.
  • the unexposed parts of the image are fixed in a known manner.
  • the pouring over and the gelatin with the unbound pigment are released from the unexposed parts of the image.
  • There are no gray parts of the image the pigment is either present or is not present, ie there are only completely blackened areas or non-blackened areas. Developers for such layers are sold commercially by Dupont.
  • the great advantage of the method according to the invention is, on the one hand, that the copying process from supervisory photo material to see-through film material is eliminated, and, on the other hand, that the loss of quality occurring in this copying process is avoided.
  • the quality loss that occurs is also avoided, since the exposure of the offset printing plate takes place in direct contact with the top material by UV light. Since the material is either completely blackened or not blackened, hard UV light can be used so that stains, cut edges or other contaminants or speckles are eliminated in the exposure process of the offset plate.
  • the emulsion layer used has only about a quarter of the silver content, and the development and fixation can be carried out using chemically less aggressive means.
  • Another advantage is that a recording medium produced in this way achieves about half the price of the previously customary graphic films, which in addition to saving the copying process or saving the repro camera, the costs of the method are significantly reduced.
  • Another advantage is that the printing form is produced directly from the "proof" that the customer has examined, so that the process for printing form production is simplified and the result examined by the customer is applied directly to the printing form.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)

Abstract

In a process for producing formes, a light source reproduces an original, point by point and line by line, on a light-sensitive recording support. The recording support used is a material having a black (opaque) washable layer which hardens at the points exposed to light and can be washed out at the unexposed points. This layer is applied to a white substrate which is transparent to UV light and cannot be washed out. The recording material is used after activation, fixing, and washing out as a printer's copy for direct production of a forme.

Description

- A - - A -
Druckformherstellung mittels auswaschbarem BildträgerPrinting form production using washable image carrier
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung "von Druckformen, bei dem eine Originalvorlage punkt- und zeilen¬ weise optoelektronisch abgetastet wird, die dabei gewonnenen Abtastsignale in digitale Bildsignale umgewandelt werden und die digitalen Bildsignale eine Lichtquelle zur punkt- und zeilenweisen Aufzeichnung des Originals auf einen lichtempfindlichen Aufzeich¬ nungsträger steuern.The present invention relates to a process for the production "of printing forms, in which an original artwork point and zeilen¬ is scanned opto-electronically, the scanning signals thereby obtained are converted into digital image signals, and the digital image signals, a light source to the point and line by line recording of the original on control a light-sensitive recording medium.
Es ist bereits in der Drucktechnik ein Verfahren zur Herstellung von Druckformen bekannt, bei dem z. B. im Offsetdruck die zu druckende Vorlage auf Aufsichtsfotomaterial belichtet wird. Man verwendet AufSichtsmaterial, damit man einen "Proof" für das endgültige Druckprodukt hat, das man dem Kunden vor dem Druck zur Begutachtung vorlegt. Nachdem der Kunde seine Zustimmung zu dem "Proof" gegeben hat, wird dieses Aufsichtsfotomaterial auf Durchsichtsmaterial umkopiert, mit dem dann in einem weiteren Belichtungsprozeß eine Offsetplatte belichtet und mit der dann in der Offsetdruckmaschine gedruckt wird. Die Belichtung der Offsetplatte erfolgt entweder von dem durch ümkopieren erhaltenen Durchsichtsfilm in einem Kopierrahmen durch Kontaktbelichtung oder von dem belichteten Aufsichtsfotomaterial mittels einer Reprokamera in Reflexbelichtung. Im ersten Fall wird als nachteilig empfunden, daß ein zwei-ter Film hergestellt werden muß und daß beim Umkopieren ein Schärfe¬ verlust auftritt. Im zweiten Fall ist eine teure Reprokamera erforderlich, und es tritt ebenfalls bei der Reflexbelichtung in der Kamera ein Qualitätsverlust auf.It is already known in printing technology a process for the production of printing forms in which, for. B. in offset printing, the template to be printed is exposed on supervisory photo material. Inspection material is used in order to have a "proof" for the final printed product, which is presented to the customer for inspection before printing. After the customer has given his consent to the "proof", this supervisory photographic material is copied onto transparent material, which is then used to expose an offset plate in a further exposure process and which is then used to print in the offset printing press. The exposure of the offset plate takes place either from the see-through film obtained by copying in a copy frame by contact exposure or from the exposed supervisory photo material by means of a repro camera in reflex exposure. In the first case, it is felt to be disadvantageous that a second film has to be produced and that a sharpness loss occurs during copying. In the second case, an expensive repro camera is required, and there is also a loss of quality in the reflex exposure in the camera.
Bei diesen beiden Verfahren werden Filme bzw. Fotomaterial verwendet, das eine stark silberhaltige Emulsionsschicht auf¬ weisen, wobei die Entwicklung des latenten Bildes mit chemisch aggressiven Mitteln durchgeführt wird, die aggressive Dämpfe abgeben und eine Entsorgung der verbrauchten Entwicklerflüssig- keit nötig machen, was, wie bekannt, stark umweltfeindlich ist.In these two processes, films or photographic material are used which have a strongly silver-containing emulsion layer, the development of the latent image being carried out using chemically aggressive agents which emit aggressive vapors and make it necessary to dispose of the used developer liquid, which as is known, is very hostile to the environment.
Der vorliegenden Erfindung liegen daher die Aufgaben zugrunde, die Bildqualität zu verbessern, das Verfahren der Druckformher¬ stellung zu vereinfachen und den gesamten Prozeß umweltfreund¬ licher zu gestalten. Die Erfindung erreicht dies dadurch, daß bei der Aufzeichnung des Originals auf einen lichtempfindlichen Aufzeichnungsträger mittels einer Lichtquelle ein Aufzeichnungs¬ träger verwendet wird, der eine schwarze (nicht lichtdurchlässige) auswaschbare Schicht aufweist, die an den belichteten Stellen ausgehärtet wird und an den nicht belichteten Stellen auswaschbar ist, wobei die Schicht auf einem weißen Trägermaterial aufge¬ bracht ist, das resistent gegen Auswaschen ist. Das ausgewaschene AufZeichnungsmaterial wird direkt als Druckvorlage zur Herstellung der Druckform verwendet, wobei das weiße Trägermaterial vorzugs¬ weise zur Herstellung von Offset- oder Tiefdruckformen UV-licht¬ durchlässig ist.The present invention is therefore based on the objects of improving the image quality, simplifying the printing form production process and making the entire process more environmentally friendly. The invention achieves this in that when recording the original on a light-sensitive recording medium by means of a light source, a recording medium is used which has a black (non-translucent) washable layer which is cured at the exposed areas and at the unexposed areas can be washed out, the layer being applied to a white carrier material which is resistant to washing out. The washed-out recording material is used directly as a printing template for the production of the printing form, the white carrier material preferably being UV-transparent for the production of offset or gravure printing forms.
Die Herstellung von Offsetdruckfσrmen erfolgt direkt durch Belichten von Offsetplatten mit UV-Licht durch Kontaktkopie mit dem Aufzeichnungsträger, der punkt- und zeilenweise von der Licht¬ quelle belichtet worden ist. Die Herstellung von geätzten Tiefdruckformen geschieht durch Belichten von mit vorgerastertem Pigmetpapier beschichteten Tiefdruckformen mit UV-Licht durch Kontaktkopie mit der vorge¬ nannten Druckvorlage.The production of offset printing forms takes place directly by exposing offset plates to UV light by means of a contact copy with the recording medium which has been exposed point by point and line by line from the light source. The production of etched gravure forms takes place by exposing gravure forms coated with pre-screened pigment paper with UV light by means of a contact copy with the aforementioned master.
Die Herstellung von gerasterten Tiefd uckformen erfolgt dadurch, daß die vorgenannte Druckvorlage als Abtastvorlage für die Graviermaschine dient.The production of screened low pressure molds takes place in that the aforementioned printing template serves as a scanning template for the engraving machine.
Das AufZeichnungsmaterial , das für die Druckvorlage verwendet wird, ist dadurch gekennzeichnet, daß es aus weißem beidseitig beschichteten Papierfilz oder dergleichen besteht, wobei die Beschichtung aus durchsichtigem Kunststoff besteht und auf einer der beschichteten Seiten des Materials eine schwarze (nicht licht¬ durchlässige) auswaschbare Schicht aufgebracht ist, die an den belichteten Stellen ausgehärtet wird und an den nicht belichteten Stellen auswaschbar ist, wobei vorzugsweise eine Beschichtung verwendet wird, die unter der Bezeichnung "Wolf", d. h. Wash- off line Film, von der Firma Dupont für die Herstellung von Durchsichtsfilmmaterial verwendet wird. Es wird hierzu auf die Druckschrift Dupont, Nr. GP 753-01 Ma 0 1843.5" sowie auf den Aufsatz "Wolf-System verbessert, "Der Druckspiegel", 9, 1987, Seite 7, verwiesen. Diese Schicht ist in unbearbeitetem Zustand schwarz, und das Bild entsteht durch eine Art subtraktive Methode, d. h., unbelichtete Partien werden während des Verarbeitungs¬ prozesses entfernt. Die Schicht enthält geringe Mengen von Silber, das zur Latenzbilderzeugung dient. Mit dieser Schicht kann eine exzellente Kantenschärfe und optimale Dichte erreicht werden, und die Schicht kann mittels Laserstrahlen im UV-Bereich des Spektrums bearbeitet werden und eignet sich somit ausgezeichnet als Aufzeichnungsträger für Faksi ileübertragungen von Zeitungε- seiten oder Co puter-to-Plate-Technik im Offsetdruck. Diese Emulsionsschicht enthält im Gegensatz zu herkömmlichen Filmen nur sehr wenig Silber und ist eine Kombination von Gelatine mit einem schwarzen Pigment hoher Konzentration. Durch Belichtung bildet sich in der Emulsionsschicht ein latentes Bild. Der sehr niedrige Silbergehalt der Emulsionsschicht beträgt etwa 25 % des Gehaltes konventioneller Emulsionen für grafische Filme, reicht aber nicht aus, um durch Entwicklung ein sichtbares Bild hervor¬ zurufen. In einem speziellen "Wolf"-Prozessor durchdringt der Aktivator die Schutzschicht, wodurch der in ihr enthaltene Gerbentwickler in die Emulsionsschicht entlassen wird. Dadurch wird eine Vernetzungsreaktion in Gang gesetzt, als deren Folge in den Latenzbildbereichen gehärtet und die schwarzen Pigmente in der Gelatine verankert werden. Die unbelichteten Bildteile werden in bekannter Weise fixiert. In der Auswaschphase werden der Überguß sowie die Gelatine mit dem ungebundenen Pigment aus den unbelichteten Bildteilen ausgelöst. Es entstehen hierbei keine grauen Bildteile, das Pigment ist entweder vorhanden oder es ist nicht vorhanden, d. h., es gibt nur völlig geschwärzte Flächen oder nicht geschwärzte Flächen. Entwickler für solche Schichten werden von der Firma Dupont kommerziell vertrieben.The recording material used for the printing template is characterized by the fact that it consists of white paper felt or the like coated on both sides, the coating consisting of transparent plastic and a black (non-translucent) washable layer on one of the coated sides of the material is applied, which is cured in the exposed areas and can be washed out in the unexposed areas, preferably using a coating which is sold under the name "Wolf", ie wash-off line film, by Dupont for the production of transparent film material is used. For this purpose, reference is made to the publication Dupont, No. GP 753-01 Ma 0 1843.5 "and to the article" Wolf system improved, "Der Druckspiegel", 9, 1987, page 7. This layer is black in the unprocessed state and the image is created by a kind of subtractive method, ie unexposed parts are removed during the processing process. The layer contains small amounts of silver, which is used for latency imaging. With this layer, excellent edge sharpness and optimal density can be achieved, and the layer can be processed by means of laser beams in the UV region of the spectrum and is therefore excellently suited as a recording medium for facsimile transmissions from newspaper pages or computer-to-plate technology in offset printing. This In contrast to conventional films, the emulsion layer contains very little silver and is a combination of gelatin with a black pigment of high concentration. Exposure forms a latent image in the emulsion layer. The very low silver content of the emulsion layer is about 25% of the content of conventional emulsions for graphic films, but is not sufficient to produce a visible image through development. The activator penetrates the protective layer in a special "Wolf" processor, releasing the tanning agent it contains into the emulsion layer. This sets in motion a crosslinking reaction, as a result of which the latent image areas harden and the black pigments are anchored in the gelatin. The unexposed parts of the image are fixed in a known manner. In the washout phase, the pouring over and the gelatin with the unbound pigment are released from the unexposed parts of the image. There are no gray parts of the image, the pigment is either present or is not present, ie there are only completely blackened areas or non-blackened areas. Developers for such layers are sold commercially by Dupont.
Der große Vorteil des erfindungsgemäßen Verfahrens liegt zum einen darin, daß der Umkopierprozeß von Aufsichtsfotomaterial auf Durchsichtsfilmmaterial entfällt, und daß zum anderen der bei diesem Umkopierprozeß auftretende Qualitätsverlust vermieden wird. Bei Belichtung einer Offsetplatte durch eine Reprokamera vom Aufsichtsfotomaterial aus wird ebenfalls der dabei auftretende Qualitätsverlust vermieden, da die Belichtung der Offsetdruckplatte in direktem Kontakt mit dem AufSichtsmaterial durch UV-Licht erfolgt. Da das Material entweder völlig geschwärzt oder nicht geschwärzt ist, kann mit hartem UV-Licht gearbeitet werden, so daß Flecken, Schnittkanten oder sonstige Verunreinigungen oder Sprenkel bei dem Belichtungsprozeß der Offsetplatte wegfallen. Außerdem hat die verwendete Emulsionsschicht nur etwa einen Viertel des Silbergehalts, und die Entwicklung und Fixierung kann mit chemisch weniger aggressiven Mitteln durchgeführt werden, Ein weiterer Vorteil besteht darin, daß ein so hergestellter Aufzeichnungsträger etwa nur den halben Preis der bisher üblichen grafischen Filme erreicht, was zusätzlich zu dem Einsparen des Umkopierprozesses bzw. dem Einsparen der Reprokamera die Kosten des Verfahrens wesentlich verringert. Ein Vorteil besteht auch darin, daß die Druckform direkt vom "Proof", den der Kunde begutachtet hat, hergestellt wird, so daß das Verfahren zur Druck¬ formherstellung vereinfacht wird und das vom Kunden begutachtete Resultat direkt auf die Druckform aufgebracht wird. The great advantage of the method according to the invention is, on the one hand, that the copying process from supervisory photo material to see-through film material is eliminated, and, on the other hand, that the loss of quality occurring in this copying process is avoided. When an offset plate is exposed by a repro camera from the supervisory photo material, the quality loss that occurs is also avoided, since the exposure of the offset printing plate takes place in direct contact with the top material by UV light. Since the material is either completely blackened or not blackened, hard UV light can be used so that stains, cut edges or other contaminants or speckles are eliminated in the exposure process of the offset plate. In addition, the emulsion layer used has only about a quarter of the silver content, and the development and fixation can be carried out using chemically less aggressive means. Another advantage is that a recording medium produced in this way achieves about half the price of the previously customary graphic films, which in addition to saving the copying process or saving the repro camera, the costs of the method are significantly reduced. Another advantage is that the printing form is produced directly from the "proof" that the customer has examined, so that the process for printing form production is simplified and the result examined by the customer is applied directly to the printing form.

Claims

WO 89/03545 ~ ~~ PCT/DE88/00620Patentansprüche WO 89/03545 ~ ~~ PCT / DE88 / 00620 patent claims
1. Verfahren zur Herstellung von Druckformen, bei dem eine Originalvorlage punkt- und zeilenweise optoelektronisch _abgetastet wird, die dabei gewonnenen Abtastsignale in digitale Bildsignale umgewandelt werden, die digitalen Bildsignale eine Lichtquelle zur punkt- und zeilenweisen Aufzeichnung des Originals auf einem licht¬ empfindlichen Aufzeichnungsträger steuern, als Aufzeichnungsträger ein Material verwendet wird, das eine schwarze (nicht lichtdurchlässige) auswaschbare Schicht aufweist, die an den belichteten Stellen ausgehärtet wird und an den nicht belichteten Stellen auswaschbar ist, wobei die Schicht auf einem weißen Trägermaterial aufgebracht ist, das resistent gegen Auswaschen ist, das Aufzeichnungsmaterial nach dem Belichten ausgewaschen wird und das ausgewaschene Aufzeichnungsmaterial als Druckvorlage zur direkten Herstellung einer Druckform verwendet wird.1. A process for the production of printing forms, in which an original is optoelectronically scanned point by line and line by line, the scanning signals obtained are converted into digital image signals, the digital image signals control a light source for point-by-line and line-by-line recording of the original on a light-sensitive recording medium , As the recording medium, a material is used which has a black (non-translucent) washable layer which is cured in the exposed areas and can be washed out in the unexposed areas, the layer being applied to a white carrier material which is resistant to washing out , the recording material is washed out after exposure and the washed out recording material is used as a printing template for the direct production of a printing form.
2. Aufzeichnungsmaterial zur Verwendung beim Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das weiße Träger¬ material zur Herstellung von Offset- oder Tiefdruckformen UV-lichtdurchlässig ist.2. Recording material for use in the method according to claim 1, characterized in that the white Träger¬ material for the production of offset or gravure forms is UV-transparent.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Herstellung von Offsetdruckformen durch Belichten von Offset¬ platten mit UV-Licht durch Kontaktkopie mit der Druckvorlage erfolgt. " ?"3. The method according to claim 1, characterized in that the production of offset printing forms by exposure of Offset¬ plates with UV light by contact copy with the print template. "?"
4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Herstellung einer geätzten Tiefdruckform durch Belichten von mit vorgerastertem Pigmentpapier beschichteten Tiefdruck¬ formen mit UV-Licht durch Kontaktkopie mit der Druckvorlage erfolgt.4. The method according to claim 1, characterized in that the production of an etched rotogravure form by exposing gravure coated with pre-screened pigment paper with UV light by contact copy with the printing template.
5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Herstellung einer gravierten Tiefdruckform dadurch erfolgt, daß die Druckvorlage als Abtastvorlage- für die Gravier¬ maschine verwendet wird.5. The method according to claim 1, characterized in that the production of an engraved gravure form takes place in that the printing template is used as a scanning template for the Gravier¬ machine.
6. Aufzeichnungsmaterial zur Verwendung bei den Verfahren nach den Ansprüchen 1 oder 3 oder 4 oder 5, dadurch gekenn¬ zeichnet, daß das Aufzeichnungsmaterial aus weißem, beid- seitig beschichtetem Papierfilz oder dergleichen besteht, wobei die Beschichtung aus durchsichtigem Kunststoff besteht und auf einer der beschichteten Seiten des Materials die aus¬ waschbare Emulsion aufgetragen ist. 6. Recording material for use in the method according to claims 1 or 3 or 4 or 5, characterized gekenn¬ characterized in that the recording material consists of white, coated on both sides paper felt or the like, wherein the coating consists of transparent plastic and on one of the coated sides of the material, the washable emulsion is applied.
PCT/DE1988/000620 1987-10-07 1988-10-07 Production of formes using washable image carriers WO1989003545A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3733874.9 1987-10-07
DE19873733874 DE3733874A1 (en) 1987-10-07 1987-10-07 PRINTING MANUFACTURING WITH A WASHABLE IMAGE CARRIER

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WO1989003545A1 true WO1989003545A1 (en) 1989-04-20

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JP (1) JPH03500215A (en)
DE (1) DE3733874A1 (en)
WO (1) WO1989003545A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433820A2 (en) * 1989-12-20 1991-06-26 Josef Raganitsch Gesellschaft m.b.H. Multiple mask system
EP0433820A3 (en) * 1989-12-20 1992-09-23 Raganitsch Gesellschaft M.B.H. Multiple mask system

Also Published As

Publication number Publication date
EP0375733A1 (en) 1990-07-04
JPH03500215A (en) 1991-01-17
DE3733874A1 (en) 1989-04-27

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