US3475140A - Composite printing plate with a magnesium alloy bonded to an aluminum layer - Google Patents

Composite printing plate with a magnesium alloy bonded to an aluminum layer Download PDF

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Publication number
US3475140A
US3475140A US518177A US3475140DA US3475140A US 3475140 A US3475140 A US 3475140A US 518177 A US518177 A US 518177A US 3475140D A US3475140D A US 3475140DA US 3475140 A US3475140 A US 3475140A
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United States
Prior art keywords
max
magnesium
printing
printing plate
layer
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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 - Lifetime
Application number
US518177A
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English (en)
Inventor
Robert J Russell
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Texas Instruments Inc
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Texas Instruments Inc
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Publication date
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Publication of US3475140A publication Critical patent/US3475140A/en
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    • 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
    • B41N1/06—Printing plates or foils; Materials therefor metallic for relief printing or intaglio printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/017—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of aluminium or an aluminium alloy, another layer being formed of an alloy based on a non ferrous metal other than aluminium
    • 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
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/923—Physical dimension
    • Y10S428/924—Composite
    • Y10S428/925—Relative dimension specified
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12729—Group IIA metal-base component

Definitions

  • a printing plate is shown to comprise a first layer of photoengravers magnesium and a second layer of aluminum, the first and second layers being metallurgically bonded together.
  • This invention relates to composite materials and articles made therefrom. More particularly, this invention relates to a composite material and a printing plate formed from a composite material including a layer of easily etchable material bonded to a layer of material having good tensile strength and flexibility.
  • FIG. 1 is a perspective view of a sheet of composite material according to this invention.
  • FIG. 2 is an end view of a printing roller including a wrap-around printing plate formed of the composite material according to this invention.
  • the composite material and printing plate contemplated by this invention is particularly adapted for use in the letter press process of printing. It is also suitable for use in offset printing.
  • the printing plate In the letter press process of printing, it is desirable to provide a printing plate capable of being wrapped around the outside of a printing roll and capable of be ing clamped at its ends. To accomplish this, it is required that the printing plate be a thin, light material, that it be readily etchable, that it give a high quality printing surface and that it have high tensile strength and long wear life on a printing press and that it resist tearing, cracking or creeping.
  • Various kinds of magnesium alloys know as photoengravers magnesium, have desirable etching characteristics in that the top or printing surface of the magnesium is not undercut by etching but rather tapers away from the top surafce to provide strength in the print plate and retain printing images.
  • photoengravers magnesium etches to a depth that many other materials do not etch to.
  • photoengravers magnesium cannot be used in a wrap-around type of printing in other than short runs since it is brittle and weak and tends to tear or crack.
  • magnesium cannot be bent on very small radii as is necessary in wrap-around printing operations. Efiorts have been made to solve these problems by using various types of plastics.
  • a composite material is formed of a first layer 14 of photoengravers magnesium alloy and a second layer 12 of aluminum or aluminum alloy. Layers 12 and 14 are metallurgically bonded to each other at the molecular level by any suitable bonding method.
  • the magnesium comprises approximately 60% of the thickness of composite plate 10 while the aluminum is approximately 40% of the thickness.
  • PE alloy is composed of by weight between 2.5% and 4.0% aluminum; a max. of 0.08% manganese; between 0.7% and 1.6% zinc; a max. of 0.5% silicon; a max of 0.05% copper; a max of 0.005% nickel; a max of 0.005% iron and a max. of 0.04% cadimium; a max. of 0.030% of other impurities and the remainder magnesium.
  • AZ16A alloy is composed of by weight between 5.8% and 7.2% aluminum; a min.
  • the aluminum 14 may be pure aluminum which is selected for strength and ductility or any one of a number of aluminum alloys may be employed so long as they provide the strength needed to withstand the bending and tension of a wrap-around printing plate and resist tearing and cracking as well as creeping.
  • the aluminum used was aluminum alloy No. 3003.
  • This alloy includes a composition of between .1 and .15 by weight of manganese, a max. of .6% by weight of silicon, a max. of .7% by weight of iron, a max. of .2% by Weight of copper, a max. of .l% by weight of zinc, a max. of .15 by weight of other metals, and the balance aluminum.
  • This particular alloy provides an excellent combination of strength and ductility.
  • aluminum alloy No. 1100 was used. This alloy includes a minimum of 99.0% aluminum and is known as commercially pure aluminum.
  • FIG. 2 a portion of a printing roll employing applicants wrap around printing plate.
  • a wrap-around printing plate generally indicated by reference numeral 20.
  • Plate 20 is plate wrapped around roll 22 and etched by any one of a number of known etching processes to provide etched portions 30 which form the desired printing surface 32 on the exterior of plate 22. .It will be understood that after the printing surface 32 has been etched and cleaned, the surface 32 may be chrome plated to improve the wear life of surface 32.
  • etched portions 30 may have more or less regular walls and may or may not extend through layer 14 to layer 12 depending on the etch process used and the result desired.
  • roller 22 includes an open cavity or recess 24 into which ends 28 of plate extend. Included within recess 24 are gripping or tensioning means 26 which may be of any well known type which can grasp the ends 28 of plate 20 and tension and retain these ends in the recess 24 to hold the plate seen in FIG. 2, the magnesium layer 14 is preferably etched away in its entirety from the ends 28 of plate 20. This keeps the magnesium from cracking from the surface under the strain of being tensioned and under the strain of the bend which ends 28 undergo. The flexible and strong aluminum layer withstands the bend of end 28.
  • a printing plate formed of a composite material comprising a first layer of magnesium alloy consisting essentially of, by weight, between 2.5% and 4.0% of aluminum; a max. of 0.08% manganese; between 0.7% and 1.6% zinc; a max. of 0.05% silicon; a max. of 0.05 copper; a max. of 0.005% nickel; a max. of 0.005% iron; a max. of 0.04% cadmium; a max. of 0.030% of other impurities and the remainder magnesium; and a second layer of aluminum alloy consisting essentially of from .1% to .15 by weight of manganese; a max. of .6% by weight of silicon; a max. of .7% by weight of iron; a max. of .2% by weight of copper; a max. of .1% by weight of zinc; a max. of .15% by weight of other elements and the balance aluminum; the first layer being metallurgically bonded to the second layer.
  • a printing plate formed of a composite material comprising a first layer of magnesium alloy consisting essentialy of, by weight, between 5.8% and 7.2% aluminum; a min. of 0.15% manganese; 0.4% to 1.5% zinc, a max. of 0.05 of silicon, a max. of 0.05% of copper, a max. of 0.005% of nickel, a max. of 0.005% iron, a max. of 0.3% of other impurities and the remainder magnesium; and a second layer of aluminum alloy consisting essentially of from .1% to .15% by weight of manganese, a max. of .6% by weight of silicon, a max. of .7 by weight of iron, a max. of .2% by weight of copper, a max. of .1% by weight of zinc, a max. of .15 by weight of other elements and the balance aluminum; the first layer being metallurgically bonded to the second layer.

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  • Printing Plates And Materials Therefor (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
US518177A 1966-01-03 1966-01-03 Composite printing plate with a magnesium alloy bonded to an aluminum layer Expired - Lifetime US3475140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51817766A 1966-01-03 1966-01-03

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US3475140A true US3475140A (en) 1969-10-28

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US (1) US3475140A (sv)
BE (1) BE685593A (sv)
GB (1) GB1149734A (sv)
SE (1) SE311171B (sv)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3849868A (en) * 1969-08-01 1974-11-26 Texas Instruments Inc Method of making magnesium anode battery
US3929073A (en) * 1973-03-07 1975-12-30 Alusuisse Composite printing plate
US4855198A (en) * 1986-08-21 1989-08-08 The Dow Chemical Company Photoengraving articles of zinc-free magnesium-based alloys
US4963237A (en) * 1989-05-08 1990-10-16 Olds Robert S Method for electrochemical activation of IVD aluminum coatings
DE102013203992A1 (de) * 2013-03-08 2014-09-11 LMpv Leichtmetall-Produktion & Verarbeitung GmbH Druckplatte
US20180326530A1 (en) * 2015-12-28 2018-11-15 Hitachi Metals, Ltd. Clad material and electronic device housing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2366185A (en) * 1942-05-04 1945-01-02 Dow Chemical Co Rolling composite magnesium-base alloy sheets
US2704512A (en) * 1951-12-12 1955-03-22 Metal printing plate and method of
US3179504A (en) * 1964-03-27 1965-04-20 Dow Chemical Co Composite body of magnesium and aluminum and method of making same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2366185A (en) * 1942-05-04 1945-01-02 Dow Chemical Co Rolling composite magnesium-base alloy sheets
US2704512A (en) * 1951-12-12 1955-03-22 Metal printing plate and method of
US3179504A (en) * 1964-03-27 1965-04-20 Dow Chemical Co Composite body of magnesium and aluminum and method of making same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3849868A (en) * 1969-08-01 1974-11-26 Texas Instruments Inc Method of making magnesium anode battery
US3929073A (en) * 1973-03-07 1975-12-30 Alusuisse Composite printing plate
US4855198A (en) * 1986-08-21 1989-08-08 The Dow Chemical Company Photoengraving articles of zinc-free magnesium-based alloys
US4963237A (en) * 1989-05-08 1990-10-16 Olds Robert S Method for electrochemical activation of IVD aluminum coatings
DE102013203992A1 (de) * 2013-03-08 2014-09-11 LMpv Leichtmetall-Produktion & Verarbeitung GmbH Druckplatte
US20180326530A1 (en) * 2015-12-28 2018-11-15 Hitachi Metals, Ltd. Clad material and electronic device housing
US10532422B2 (en) * 2015-12-28 2020-01-14 Hitachi Metals, Ltd. Clad material and electronic device housing

Also Published As

Publication number Publication date
BE685593A (sv) 1967-02-01
SE311171B (sv) 1969-06-02
GB1149734A (en) 1969-04-23

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