FR2460211A1 - NEW OFFSET PLATE WITH SURFACE MATT CHROMED - Google Patents

NEW OFFSET PLATE WITH SURFACE MATT CHROMED Download PDF

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Publication number
FR2460211A1
FR2460211A1 FR7917153A FR7917153A FR2460211A1 FR 2460211 A1 FR2460211 A1 FR 2460211A1 FR 7917153 A FR7917153 A FR 7917153A FR 7917153 A FR7917153 A FR 7917153A FR 2460211 A1 FR2460211 A1 FR 2460211A1
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FR
France
Prior art keywords
matt
offset plate
chromed
new offset
chromium
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
FR7917153A
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French (fr)
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FR2460211B1 (en
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Individual
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Individual
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9227397&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FR2460211(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to FR7917153A priority Critical patent/FR2460211A1/en
Priority to CA354,878A priority patent/CA1133755A/en
Priority to EP19800400982 priority patent/EP0022033B1/en
Priority to DE8080400982T priority patent/DE3069101D1/en
Priority to BR8004111A priority patent/BR8004111A/en
Priority to MX18298980A priority patent/MX156999A/en
Priority to ES492985A priority patent/ES8200273A1/en
Priority to JP8858780A priority patent/JPS5637192A/en
Publication of FR2460211A1 publication Critical patent/FR2460211A1/en
Publication of FR2460211B1 publication Critical patent/FR2460211B1/fr
Application granted granted Critical
Granted legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/04—Printing plates or foils; Materials therefor metallic
    • B41N1/08—Printing plates or foils; Materials therefor metallic for lithographic printing
    • B41N1/10—Printing plates or foils; Materials therefor metallic for lithographic printing multiple
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/04—Printing plates or foils; Materials therefor metallic
    • B41N1/08—Printing plates or foils; Materials therefor metallic for lithographic printing

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Laminated Bodies (AREA)

Abstract

LA PRESENTE INVENTION CONCERNE UNE NOUVELLE PLAQUE OFFSET CARACTERISEE EN CE QUE SA SURFACE HYDROPHILE CONSTITUEE DE PREFERENCE PAR DE L'ACIER INOXYDABLE, DE L'ETAIN-NICKEL OU DE CHROME A ETE RENDUE MATE ET POREUSE GRACE AU DEPOT SUR CETTE SURFACE D'UNE COUCHE DE CHROME MAT ET POREUX D'EPAISSEUR INFERIEURE A 1MICRON ET DE PREFERENCE INFERIEURE A 0,5MICRON.THE PRESENT INVENTION CONCERNS A NEW CHARACTERIZED OFFSET PLATE IN THAT ITS HYDROPHILIC SURFACE CONSISTING OF STAINLESS STEEL, TIN-NICKEL OR CHROMIUM HAS BEEN MADE AND DARK THANKS TO THE DEPOSIT ON THIS SURFACE OF A LAYER. MATT AND POROUS CHROME OF THICKNESS LESS THAN 1MICRON AND PREFERABLY LESS THAN 0.5MICRON.

Description

La présente invention concerne de nouvelles plaques offs.et dont la,The present invention relates to new plates offs.and including,

surface hydrophile a été rendue muate  hydrophilic surface has been made muate

par du chrome.with chromium.

Dans les procédés offset il est souvent recom-r mandé de disposer de surfaces hydrophiles mates c'est-à-dire non brillantes. Cette matité peut s'obtenir par des procédés connus qui font tous appels à une attaque de la surface du matériau  In offset processes it is often recommended to have matt hydrophilic surfaces, that is to say non-glossy surfaces. This mattness can be obtained by known methods which all call for an attack on the surface of the material.

hydrophile soit mécaniquement soit chimiquement soit électrochi-  hydrophilic either mechanically or chemically or electrochemically

miquement. Or chacun de ces procédés se trouve présenter des  mically. Each of these processes is found to have

inconvénients notables par exemple les procédés d'attaque mécani-  notable disadvantages, for example mechanical attack methods

que sont coûteux, longs et compliqués lorsqu'on réalise le sablage de la surface, unidirectionnels lorsqu'on utilise le brossage de  that are expensive, long and complicated when sanding the surface, unidirectional when using brushing

la surface etc...the surface etc ...

Il a été trouvé et c'est là l'objet de la présente invention qu'il était possible de "mater" (c'est-à-dire rendre "mate") la surface d'un matériau hydrophile brillant en déposant sur cette surface une couche d'une épaisseur inférieure à 1 micron  It has been found and it is there the object of the present invention that it was possible to "mat" (that is to say, to "make" mat) the surface of a shiny hydrophilic material by depositing on this surface a layer less than 1 micron thick

et de préférence inférieure à 0,5 micron de chrome mat et poreux.  and preferably less than 0.5 micron of matt and porous chromium.

On a déjà préconisé de déposer sur des supports divers des couches de chrome de diverses épaisseurs; ces couches sont, dans le cadre de l'offset, utilisées comme couches hydrophiles très dures. Bien que l'on ait parfois indiqué que de telles couches  It has already been recommended to deposit on various supports layers of chromium of various thicknesses; these layers are, as part of the offset, used as very hard hydrophilic layers. Although it has sometimes been reported that such layers

pouvaient avoir des épaisseurs inférieures à 1 micron, les spécia-  could have thicknesses less than 1 micron, the specialists

listes savent bien que ces couches très minces de chrome ne peuvent j o u e r leur rôle de couche dure aquaphile car elles se rayent trop facilement et sont trop poreuses de sorte qu'elles laissent  lists know very well that these very thin layers of chromium cannot play their role of hard aquaphile layer because they are scratched too easily and are too porous so that they leave

apparaître le métal sous jacent avec ses propriétés parfois inac-  appear the underlying metal with its sometimes inac-

ceptables.ceptables.

Par ailleurs on sait réaliser, par dépôt électroly-  Furthermore, we know how to achieve, by electrolytic deposition

tique par exemple, des couches de chrome dont la surface a un aspect mat. L'invention consiste donc à déposer sur une surface  tick for example, layers of chrome whose surface has a matt appearance. The invention therefore consists in depositing on a surface

présentant des propriétés hydrophiles utilisables au sens de l'off-  having hydrophilic properties usable in the sense of the off-

set une très mince couche de chrome mat, dont on acceptera la porosité et la fragilité relatives précisément Darce que la surface sous-jacente est hydrophile et encrophobe, mais que l'or utilisera pour rendre  set a very thin layer of matt chrome, whose relative porosity and brittleness will be accepted precisely because the underlying surface is hydrophilic and encrophobic, but which gold will use to render

"mate" la surface du matériau, final.  "mat" the surface of the final material.

2 24602112 2460211

Les matériaux hydrophiles brillants que l'on peut rendre mat en utilisant l'invention sont essentiellement l'acier  The glossy hydrophilic materials which can be matted using the invention are essentially steel

inoxydable, les surfaces d'étain-nickel et de chrome.  stainless, tin-nickel and chrome surfaces.

Les techniques utilisables pour réaliser le déDôt du voile mince de chrome "mat" sur la surface du matériau hydrophiles  The techniques that can be used to deposit the thin veil of "matt" chromium on the surface of the hydrophilic material

sont connues.are known.

L'exemple non limitatif suivant illustre l'invention.  The following nonlimiting example illustrates the invention.

On utilise comme support une plaque en acier inoxy-  A stainless steel plate is used as support

dable d'épaisseur 35/100 Drésentant une surface brillante. Cette LO plaque est dégraissée, rincée. La plaque est rincée et immergée dans un bain de chrome classique (250 g d'anhydride chromique et 2,5 g d'acide chromique par litre, température 280C); cette plaque est reliée à la cathode; le courant (15 A/dm2) est mis 30 secondes après l'immersion de la plaque et est maintenu jusqu'à çe que le dépôt de L5 chrome ait atteint 0,3 microns d'épaisseur avec une coupure de  dable thickness 35/100 With a shiny surface. This LO plate is degreased, rinsed. The plate is rinsed and immersed in a conventional chromium bath (250 g of chromic anhydride and 2.5 g of chromic acid per liter, temperature 280C); this plate is connected to the cathode; the current (15 A / dm2) is switched on 30 seconds after immersion of the plate and is maintained until the deposit of L5 chromium has reached 0.3 microns thick with a cut of

coupure du courant 15 secondes après le début du dépôt de chrome.  power cut 15 seconds after the start of chromium deposition.

On obtient une plaque d'aspect mat.We obtain a mat appearance plate.

Claims (1)

REVENDICATIQN._.CLAIMS. Nouvelle plèque offset crlractérxs,ée en ce que  New offset offset crlractérxs sa surface hydrophile constituée de préférence par de l'acier ino-  its hydrophilic surface preferably consisting of stainless steel xydable,de l'étain-nickel ou de chrome a été rendue mate et Doreuse grâce au dépôt sur cette surface d'une couche de chrome mat et  xtainable, tin-nickel or chrome has been made matt and gilded by depositing on this surface a layer of matt chrome and poreux d'épaisseur inférieure à I micron et de préférence infé-  porous with a thickness of less than I micron and preferably less rieure à 0,5 micron.less than 0.5 micron.
FR7917153A 1979-07-02 1979-07-02 NEW OFFSET PLATE WITH SURFACE MATT CHROMED Granted FR2460211A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR7917153A FR2460211A1 (en) 1979-07-02 1979-07-02 NEW OFFSET PLATE WITH SURFACE MATT CHROMED
CA354,878A CA1133755A (en) 1979-07-02 1980-06-26 Offset plates with a hydrophilic surface given a dull finish by way of a thin chromium layer
BR8004111A BR8004111A (en) 1979-07-02 1980-06-30 OFFSET PLATES
DE8080400982T DE3069101D1 (en) 1979-07-02 1980-06-30 Lithographic printing plates with hydrophilic surface matted with a thin chrome layer
EP19800400982 EP0022033B1 (en) 1979-07-02 1980-06-30 Lithographic printing plates with hydrophilic surface matted with a thin chrome layer
MX18298980A MX156999A (en) 1979-07-02 1980-07-01 IMPROVED OFFSET PLATE
ES492985A ES8200273A1 (en) 1979-07-02 1980-07-01 Lithographic printing plates with hydrophilic surface matted with a thin chrome layer.
JP8858780A JPS5637192A (en) 1979-07-02 1980-07-01 Offset block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7917153A FR2460211A1 (en) 1979-07-02 1979-07-02 NEW OFFSET PLATE WITH SURFACE MATT CHROMED

Publications (2)

Publication Number Publication Date
FR2460211A1 true FR2460211A1 (en) 1981-01-23
FR2460211B1 FR2460211B1 (en) 1984-07-06

Family

ID=9227397

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7917153A Granted FR2460211A1 (en) 1979-07-02 1979-07-02 NEW OFFSET PLATE WITH SURFACE MATT CHROMED

Country Status (8)

Country Link
EP (1) EP0022033B1 (en)
JP (1) JPS5637192A (en)
BR (1) BR8004111A (en)
CA (1) CA1133755A (en)
DE (1) DE3069101D1 (en)
ES (1) ES8200273A1 (en)
FR (1) FR2460211A1 (en)
MX (1) MX156999A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480676A1 (en) * 1980-04-16 1981-10-23 Nouel Jean Marie NEW OFFSET STEEL PLATES USING CHROME OXIDE SURFACES
FR2529511A1 (en) * 1982-07-02 1984-01-06 Nouel Jean Marie OFFSET PLATES BASED STEEL AND CHROME MULTILAYER
JPS6131355A (en) * 1984-07-20 1986-02-13 工業技術院長 Graphite-boron carbide sliding member
US4911075A (en) * 1988-08-19 1990-03-27 Presstek, Inc. Lithographic plates made by spark discharges
JPH02131992A (en) * 1989-06-14 1990-05-21 Konica Corp Support for lithographic printing plate

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB475902A (en) * 1936-05-29 1937-11-29 Arthur Ronald Trist Improvements in and relating to printing plates for lithography
GB640470A (en) * 1947-09-04 1950-07-19 Coates Brothers & Co Improvements in the manufacture of lithographic printing plates
DE806315C (en) * 1949-10-18 1951-06-14 Roman Freundorfer Offset printing plate and method of making the same
FR82759E (en) * 1962-09-27 1964-04-17 Le Quadrimetal Offset Sa Pour Offset printing process and resulting industrial products
GB1172517A (en) * 1965-12-02 1969-12-03 Rotaprint Ltd Photochemical Production of Plates for Offset Lithography
BE779229A (en) * 1972-02-10 1972-05-30 Centre Rech Metallurgique Offset printing plates - have a steel support with a chromium layer and a radiation sensitive layer,prodn

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131507A (en) * 1974-09-11 1976-03-17 Fuji Photo Film Co Ltd OFUSETSUTOINSATSUBANYOSHIJITAI
FR2442722A1 (en) * 1978-11-29 1980-06-27 Nouel Jean Marie NEW AQUAPHILE LAYER FOR OFFSET PRINTING PLATES AND OBTAINED PLATES

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB475902A (en) * 1936-05-29 1937-11-29 Arthur Ronald Trist Improvements in and relating to printing plates for lithography
GB640470A (en) * 1947-09-04 1950-07-19 Coates Brothers & Co Improvements in the manufacture of lithographic printing plates
DE806315C (en) * 1949-10-18 1951-06-14 Roman Freundorfer Offset printing plate and method of making the same
FR82759E (en) * 1962-09-27 1964-04-17 Le Quadrimetal Offset Sa Pour Offset printing process and resulting industrial products
GB1172517A (en) * 1965-12-02 1969-12-03 Rotaprint Ltd Photochemical Production of Plates for Offset Lithography
BE779229A (en) * 1972-02-10 1972-05-30 Centre Rech Metallurgique Offset printing plates - have a steel support with a chromium layer and a radiation sensitive layer,prodn

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CA1973 *

Also Published As

Publication number Publication date
MX156999A (en) 1988-10-19
EP0022033B1 (en) 1984-09-05
FR2460211B1 (en) 1984-07-06
BR8004111A (en) 1981-01-21
ES492985A0 (en) 1981-10-16
JPS5637192A (en) 1981-04-10
CA1133755A (en) 1982-10-19
JPH0322314B2 (en) 1991-03-26
ES8200273A1 (en) 1981-10-16
DE3069101D1 (en) 1984-10-11
EP0022033A1 (en) 1981-01-07

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