US3929073A - Composite printing plate - Google Patents

Composite printing plate Download PDF

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Publication number
US3929073A
US3929073A US446121A US44612174A US3929073A US 3929073 A US3929073 A US 3929073A US 446121 A US446121 A US 446121A US 44612174 A US44612174 A US 44612174A US 3929073 A US3929073 A US 3929073A
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US
United States
Prior art keywords
printing plate
per cent
zinc
layer
aluminum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US446121A
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English (en)
Inventor
Klaus Bretthauer
Erich Simon
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.)
Alcan Holdings Switzerland AG
Original Assignee
Alusuisse Holdings AG
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 Alusuisse Holdings AG filed Critical Alusuisse Holdings AG
Application granted granted Critical
Publication of US3929073A publication Critical patent/US3929073A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41N1/06—Printing plates or foils; Materials therefor metallic for relief printing or intaglio printing
    • 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.]
    • Y10T428/12736—Al-base component
    • Y10T428/12764—Next to Al-base component

Definitions

  • ABSTRACT Composite printing plate for relief and/or photogravure printing, characterised in that it consists of a support layer of aluminum or aluminum alloy of very low tin or zinc content, and of an aluminum-zinc layer clad onto one side of the support layer.
  • the invention presented here concerns a composite printing plate, which finds use in relief and/or photogravure printing, and which in its construction is based on aluminun.
  • Printing plates produced from two or more layers of different metals are well known. Such plates however consist of a zinc alloy containing only little aluminun, clad on an aluminum alloy.
  • the object of the invention is a printing plate exhibiting an AlZn layer, containing 0.2-l percent Zn, preferably 0.5-2 percent Zn, rolled onto one side of a supporting material.
  • This support layer which is also known as the core layer consists of aluminun or a suitable aluminum alloy which may contain tin or zinc only as impurities.
  • an aluminum alloy containing 0.2-5 percent Mn, preferably 0.5-2 percent Mn is used.
  • This alloy may also contain 0.1-0.5 percent Mg.
  • the layer of AlZn cladding should be able to be etched away as quickly and as uniformly as possible, the core layer on the other hand shoud exhibit high strength, formability and resistance to the etchant.
  • the AlZn billets After annealing at approximately 400C for 1 hour, are hot rolled down to a thickness of, for example, percent of the thickness of the core billet and, in plate form, laid on top of the core billet.
  • the two materials are then annealed in contact with each other for 1-4 hours at a cladding temperature lying between 400 and 450C, preferably at 420C, and finally hot rolled to 7-9 mm.
  • the final thickness of the composite plate is arrived at by cold rolling. This, as a rule, is at about 1 mm thickness.
  • the AlZn cladding is completely removed at the desired places in a short time; the substrate which is low in tin and zinc is on the other hand almost unattacked by the etchant.
  • the relief height or depth is given by the different etching behaviour of the materials. No edge protection agent is necessary.
  • FIG. 1 Schematic section through a composite printing plate before the etching process.
  • FIG. 2 Schematic section through a composite printing plate after the etching process.
  • the substrate layer 1 of a suitable Al alloy has been clad with an AlZn layer. This layer is masked with an acid resistant partial layer 3. On etching in pure dilute hydrochloric acid the AlZn layer is completely removed on the areas not masked; the support layer is almost unattacked.
  • EXAMPLE An aluminum alloy billet containing about 1 per cent zinc was annealed at about 400C for about 1 hour and then hot rolled down to a plate whose thickness was about 10 per cent of that of the core billet to be used.
  • This cladding plate and the aluminum alloy core billet which contained about 1 per cent manganese and about 0.3 per cent magnesium, were annealed in contact with each other for about 4 hours at about 420C and then hot rolled to about 7 millimeters. The final thickness of about 1 millimeter of the composite material was arrived at by cold rolling.
  • the cladding layer was masked at the places which were not to be attacked by the etchant.
  • the cladding at the places not masked was completely removed with pure dilute hydrochloric acid.
  • the support layer was not or only negligibly attacked by the etchant.
  • a printing plate formed of a composite material comprising a support layer consisting of from 0.2 to 5 per cent manganese, from 0.1 to 0.5 per cent magnesium, zinc and tin at most as impurities, and the balance being aluminum and a clad layer consisting of from 0.2 to IO'per cent zinc and the balance being aluminum clad onto one side of said support layer.

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  • Printing Plates And Materials Therefor (AREA)
US446121A 1973-03-07 1974-02-27 Composite printing plate Expired - Lifetime US3929073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19737308584U DE7308584U (de) 1973-03-07 1973-03-07 Verbunddruckplatte

Publications (1)

Publication Number Publication Date
US3929073A true US3929073A (en) 1975-12-30

Family

ID=6637260

Family Applications (1)

Application Number Title Priority Date Filing Date
US446121A Expired - Lifetime US3929073A (en) 1973-03-07 1974-02-27 Composite printing plate

Country Status (10)

Country Link
US (1) US3929073A (el)
JP (1) JPS49126401A (el)
AT (1) AT331265B (el)
BE (1) BE811683A (el)
CH (1) CH565660A5 (el)
DE (1) DE7308584U (el)
FR (1) FR2220389B1 (el)
GB (1) GB1453742A (el)
IT (1) IT1008378B (el)
NL (1) NL7403096A (el)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684429A (en) * 1984-06-19 1987-08-04 Dalton Jr Edward L Method of making a laminated printing plate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4502677A (en) * 1981-11-26 1985-03-05 Mitsubishi Paper Mills, Ltd. Method for feeding recording sheet materials
JP2010085511A (ja) * 2008-09-30 2010-04-15 Daiken Corp 吸音装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1083890A (en) * 1910-07-25 1914-01-06 Paul M Hammalian Stereotype.
US2290026A (en) * 1942-02-20 1942-07-14 Nat Smelting Co Aluminum alloy
US3136672A (en) * 1961-08-28 1964-06-09 Robert G Prongay Printing plate and method of making the same
US3475140A (en) * 1966-01-03 1969-10-28 Texas Instruments Inc Composite printing plate with a magnesium alloy bonded to an aluminum layer
US3717915A (en) * 1968-09-27 1973-02-27 Ver Leichtmetallwerke Gmbh Aluminum offset printing plate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1083890A (en) * 1910-07-25 1914-01-06 Paul M Hammalian Stereotype.
US2290026A (en) * 1942-02-20 1942-07-14 Nat Smelting Co Aluminum alloy
US3136672A (en) * 1961-08-28 1964-06-09 Robert G Prongay Printing plate and method of making the same
US3475140A (en) * 1966-01-03 1969-10-28 Texas Instruments Inc Composite printing plate with a magnesium alloy bonded to an aluminum layer
US3717915A (en) * 1968-09-27 1973-02-27 Ver Leichtmetallwerke Gmbh Aluminum offset printing plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684429A (en) * 1984-06-19 1987-08-04 Dalton Jr Edward L Method of making a laminated printing plate

Also Published As

Publication number Publication date
IT1008378B (it) 1976-11-10
NL7403096A (el) 1974-09-10
BE811683A (fr) 1974-06-17
DE7308584U (de) 1973-08-02
JPS49126401A (el) 1974-12-04
AT331265B (de) 1976-08-10
FR2220389A1 (el) 1974-10-04
FR2220389B1 (el) 1977-09-23
CH565660A5 (el) 1975-08-29
GB1453742A (el) 1976-10-27
ATA185374A (de) 1975-11-15

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