US1605082A - Preparation of mercurial printing surfaces - Google Patents

Preparation of mercurial printing surfaces Download PDF

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Publication number
US1605082A
US1605082A US736627A US73662724A US1605082A US 1605082 A US1605082 A US 1605082A US 736627 A US736627 A US 736627A US 73662724 A US73662724 A US 73662724A US 1605082 A US1605082 A US 1605082A
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US
United States
Prior art keywords
metal
layer
areas
copper
mercurial
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
US736627A
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English (en)
Inventor
Trist Arthur Ronald
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Individual
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Individual
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Filing date
Publication date
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Publication of US1605082A publication Critical patent/US1605082A/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
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/16—Formes with areas rendered ink-resistant by covering with an amalgam; Printing plates for amalgam 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.]
    • Y10T428/12632—Four or more distinct components with alternate recurrence of each type component
    • 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.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12785—Group IIB metal-base component
    • 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.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12896—Ag-base component
    • 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.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12903—Cu-base component
    • 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.]
    • Y10T428/12986—Adjacent functionally defined components

Definitions

  • This invention relates to improvements in the preparation of mercurial printing surfaces and has ⁇ for its object the p rovision of means 4whereby a much longer printing life and more regular and controllable operation is obtained than has been possible heretofore.
  • the present invention consists in the formation ofa printing surface of the type specified in which the mercurized metal of which each ink repelling areaI is formed is wholly supported and maintained in place by a metal unaffected -by mercury and suitable for forming the ink retaining areas, means being provided to 'cause the mercurized metal to adherel to and/or interlock with the said metal.
  • Figure 1 illustrates the first step in producing a printing plate according to this invention.
  • Figure 2 illustrates the same part of the same plate illustrated in Figure 1 after the bichromated fish glue image has been applied thereto and'baked.
  • Figure 3 illustrates the same part of the I same plate after etching.
  • Figure 4 illustrates the same part of the same plate after the first electrodeposit.
  • Figure 5 illustrates the same part of the same plate after repeated electrodeposits of v,different metals have been effected.
  • r Figure 6 is an enlarged cross section showing therepeated electrodeposits 'more clearly.
  • Figure 7 illustrates the same part of the same plate as illustrated in Figures 1 to 5 inclusive after the burnt enamel has been removed.
  • Figure 8 shows the finished surface
  • the upper surface Z7 of the nickel layer b is coated with bichromated fish glue enamel and a photo print is taken from a suitable nega-tive transparency preferably by means of a point source of light. After exposure7 the print is wash developed and baked in well known'I manner. ⁇ The result of these manipulations is illustrated in Figure 2 in which the parts c represent the baked dots of the image.
  • 'lfhe surface b with the baked enamel parts o is now treated with a suitable mordant, for example perchloride of iron, to etch away the exposed parts of the surface b until the thickness of the layer b has been locally reduced from one thousandth of an inch in thickness to between five and six ten thousandths of an inch in thickness thus producing elevations b2 beneath the parts c.
  • a suitable mordant for example perchloride of iron
  • a very thin layer e of silver is electrically deposited and on the layer e a second very thin layer d of-copper is electrically deposited and so on,
  • the baked bichromated fish glue enamel parts c are now removed by means of a suitable alkali, such for example as a solution of cyanide of potassium or cyanide of sodium.
  • a suitable alkali such for example as a solution of cyanide of potassium or cyanide of sodium.
  • the metal deposited after the treatment by the mordant or etch shall produce the ink repelling areas as when such deposit is efiected and the parts c are removed by alkali treatment a slight upstanding ridge f is formed about each individual elevation b2 as illustrated in Figures 6 and 7.
  • the surface of the plate is now treated with metallic mercury with the result that the deposits d, e, d', e, cl3-2,162, and the upstanding ridges f are quickly amalgamated producing mercurized ink repelling areas g, which are (if so desired) truly planographic with respect to the ink retaining areas.
  • the ink repelling area g is supported by the nickel layer l; which is unaffected by mercury and that the area g is Wholly retained in place by a fioor and Walls integrally associated therewith so that the area g forms an isolated pool of mercurized metal Wholly supported by nickel which is unaected by mercury. l
  • the silver layers e, e', e2 may be replaced by gold layers and after the initial layer d of copper has been deposited a composite deposition of copper and silver or copper and gold may beernployed in place of the layers e, d', e, d2, e2, Without departing from the invention.
  • a planographic printing plate comprising a layer of metal which is unaffected by mercury and which is suitable for forming ink retaining areas, recesses in said layer of metal arranged to leave the printing areas as projections and a mercurized .metal filling located in said recesses and firmly adherent to said recesses, said mercurized metal filling producing the nonprinting areas.
  • a planographic printing plate comprising a layer of metal which is unaffected by mercury and which is suitable for forming ink retaining areas, recesses-in said layer of metal arrangedto leave projecting printing areas; a metallic coating in each recess, said coating being of a metal which will adhere to the surface of the recess and to which mercury will adhere; and a mercurized metal filling located in said coated recesses and firmly adherent. to said recesses, said mercurized metal filling producing the nonprinting areas.
  • a planographic printing plate comprising a layer of nickel; recesses in said nickel layer arranged to leave projecting printing areas; a copper coating in each recess;
  • a process for producing a planographic printing plate comprising the local application of a resist to a nickel layer, etching the exposed parts of the nickel sheet by a mordant to locally reduce the thickness of the nickel layer and produce recesses, electrodepositing a very thin layer of copper on the etched parts of the nickel sheet, electrodeposit-ing alternately verythin layers of silver and copper on the copper layer, removing the resist and applying mercury to the surface of the plate so that the copper and silver layersmay be amalgamated to produce ink repelling areas.
  • a process for producing a planographic printing plate comprising the application of light sensitive bichromated fish glue to one surface of a nickel layer, exposing said fish glue to light through a negative transparency, Wash development of the image to remove the unexpos'ed parts of the fish glue, treatment of the plate by heat to bake the exposed fish glue to form local resists on the nickel layer, etching the parts of the nickel layer not protected by the resist With a mordant to locally reduce the thickness of the nickel layer and produce recesses,

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • ing And Chemical Polishing (AREA)
US736627A 1923-09-10 1924-09-08 Preparation of mercurial printing surfaces Expired - Lifetime US1605082A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22755/23A GB225928A (en) 1923-09-10 1923-09-10 Improvements in and relating to the preparation of mercurial printing surfaces

Publications (1)

Publication Number Publication Date
US1605082A true US1605082A (en) 1926-11-02

Family

ID=10184549

Family Applications (1)

Application Number Title Priority Date Filing Date
US736627A Expired - Lifetime US1605082A (en) 1923-09-10 1924-09-08 Preparation of mercurial printing surfaces

Country Status (4)

Country Link
US (1) US1605082A (fr)
FR (1) FR585489A (fr)
GB (1) GB225928A (fr)
NL (1) NL17603C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3150940A (en) * 1960-03-01 1964-09-29 Cincinnati Milling Machine Co Bearing surface and method of producing said surface
US3841218A (en) * 1971-07-23 1974-10-15 Fuji Photo Film Co Ltd Lithographic printing plates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3150940A (en) * 1960-03-01 1964-09-29 Cincinnati Milling Machine Co Bearing surface and method of producing said surface
US3841218A (en) * 1971-07-23 1974-10-15 Fuji Photo Film Co Ltd Lithographic printing plates

Also Published As

Publication number Publication date
NL17603C (fr)
FR585489A (fr) 1925-03-02
GB225928A (en) 1924-12-10

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