GB931309A - Electrotypes - Google Patents

Electrotypes

Info

Publication number
GB931309A
GB931309A GB30197/61A GB3019761A GB931309A GB 931309 A GB931309 A GB 931309A GB 30197/61 A GB30197/61 A GB 30197/61A GB 3019761 A GB3019761 A GB 3019761A GB 931309 A GB931309 A GB 931309A
Authority
GB
United Kingdom
Prior art keywords
tin
lead
plate
alloy
printing
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
Application number
GB30197/61A
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.)
WILFRED HARVEY
Original Assignee
WILFRED HARVEY
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
Priority to BE636483D priority Critical patent/BE636483A/xx
Application filed by WILFRED HARVEY filed Critical WILFRED HARVEY
Priority to GB30197/61A priority patent/GB931309A/en
Priority to US266748A priority patent/US3309290A/en
Priority to FR928663A priority patent/FR1351255A/en
Priority to DEB71269A priority patent/DE1257161B/en
Publication of GB931309A publication Critical patent/GB931309A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/10—Moulds; Masks; Masterforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C3/00—Reproduction or duplicating of printing formes
    • B41C3/08—Electrotyping; Application of backing layers thereon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

931,309. Printing-plates. R. C. BLACKMORE, and W. HARVEY. April 6, 1962 [Aug. 29, 1961; March 22, 1962], Nos. 31097/61 and 11084/62. Class 41. [Also in Group XVI] An electrotype printing plate is formed on a flat or curved mould e.g. by electro-deposition of copper, and the negative side of the separated formed plate is then treated with a small amount of a low-melting metal sufficient only to fill the sharp depressions, and the plate is then backed-up by a heavy plating of a metal e.g. tin/lead alloy which may also contain cadmium or antimony. As low melting alloy 50: 50 tin and lead may be used, the m.p. lying preferably 65-200 ‹ C. A lead-tin-bismuth-cadmium alloy melting at 80‹ C. may also be used. By this process distortion of the flat or curved plate by hot metal is largely avoided, and removal of material backing up "white areas " at intermediate processing stages is unnecessary. In examples, a laminated plastic mould mounted on flat glass sheet is silvered and plated with copper to form a shell 0.02 inch thick. The separated shell has laid on the negative side, tin/lead foil 0.005 inch thick which is heated to 200‹, e.g. by radiation, when sharp depressions are filled. The printing face is then protected with a coating of shellac and suspended in bath containing tin, lead and fluoboric acid, to form a plate 0.06 inch thick, and this side bonded to aluminium giving a total thickness of 0.166 inch. The low melting alloy may be applied before or after forming a curved printing plate, and then plated with lead-tin.
GB30197/61A 1961-08-28 1961-08-28 Electrotypes Expired GB931309A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE636483D BE636483A (en) 1961-08-28
GB30197/61A GB931309A (en) 1961-08-28 1961-08-28 Electrotypes
US266748A US3309290A (en) 1961-08-28 1963-03-20 Method of forming electrotypes
FR928663A FR1351255A (en) 1961-08-28 1963-03-20 Process for obtaining electroplating clichés and clichés obtained
DEB71269A DE1257161B (en) 1961-08-28 1963-03-22 High printing form and process for its production

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB30197/61A GB931309A (en) 1961-08-28 1961-08-28 Electrotypes
GB1108462 1962-03-22

Publications (1)

Publication Number Publication Date
GB931309A true GB931309A (en) 1963-07-17

Family

ID=33436302

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30197/61A Expired GB931309A (en) 1961-08-28 1961-08-28 Electrotypes

Country Status (5)

Country Link
US (1) US3309290A (en)
BE (1) BE636483A (en)
DE (1) DE1257161B (en)
FR (1) FR1351255A (en)
GB (1) GB931309A (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US385519A (en) * 1888-07-03 Setts
US287617A (en) * 1883-10-30 Process of preparing rubber plates or sheets for graining
US994705A (en) * 1901-03-08 1911-06-06 Alexander Elliott Electrotype and process of making same.
US1720430A (en) * 1928-04-20 1929-07-09 Bartholomew J O'brian Process of manufacturing curved electrotype plates
US2172564A (en) * 1934-05-04 1939-09-12 Tablet fob use in fabricating

Also Published As

Publication number Publication date
US3309290A (en) 1967-03-14
FR1351255A (en) 1964-01-31
BE636483A (en)
DE1257161B (en) 1967-12-28

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