GB1192452A - Thermographic Stencil - Google Patents

Thermographic Stencil

Info

Publication number
GB1192452A
GB1192452A GB34075/67A GB3407567A GB1192452A GB 1192452 A GB1192452 A GB 1192452A GB 34075/67 A GB34075/67 A GB 34075/67A GB 3407567 A GB3407567 A GB 3407567A GB 1192452 A GB1192452 A GB 1192452A
Authority
GB
United Kingdom
Prior art keywords
film
holes
areas
sheet
embossing
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
GB34075/67A
Inventor
Alexander Spencer
Alan Francis Blake
David Guthrie Burns
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.)
NRG Manufacturing Ltd
Original Assignee
NRG Manufacturing Ltd
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 NRG Manufacturing Ltd filed Critical NRG Manufacturing Ltd
Priority to GB34075/67A priority Critical patent/GB1192452A/en
Priority to US746890A priority patent/US3587459A/en
Priority to NL6810467A priority patent/NL6810467A/xx
Priority to FR1575131D priority patent/FR1575131A/fr
Priority to BE718519D priority patent/BE718519A/xx
Priority to DE19681771888 priority patent/DE1771888A1/en
Publication of GB1192452A publication Critical patent/GB1192452A/en
Expired legal-status Critical Current

Links

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
    • B41N1/24—Stencils; Stencil materials; Carriers therefor
    • B41N1/245—Stencils; Stencil materials; Carriers therefor characterised by the thermo-perforable polymeric film heat absorbing means or release coating therefor
    • 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
    • Y10T83/00—Cutting
    • Y10T83/02—Other than completely through work thickness
    • Y10T83/0237—Pricking

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Abstract

1,192,452. Stencils; embossing. GESTETNER Ltd. 23 July, 1968 [25 July, 1967], No. 34075/67. Headings B6C and B6J. A stencil blank, which is to be imaged by irradiation with infra-red radiation whilst in contact with an original carrying a heatabsorbent image, comprises a thin sheet of thermoplastic film softening at a temperature not above 250‹ C. and having a multiplicity of minute, closely spaced holes or weakened areas. The imaging operation causes holes in the imaged areas to be enlarged, or perforations to be formed in the weakened parts at the image areas. The weakened areas may be formed by embossing, the film being passed between a hard roller carrying a sheet of abrasive paper thereon or having a regular pattern of minute projections, and a plain roller having a relatively resilient surface. For making the holes, it is ensured that the projections pass through the film. The film which may be orientated or non- orientated, and may be heat-shrinkable, can be polystyrene, vinyl chloride/vinylidene chloride copolymers, high density polyethylene, polypropylene or polyethylene terephthalate. If a film with holes therein is used, the enlarged image holes pass more ink than the remainder so that a toned copy is obtained. To avoid the toning effect, the holed film 1 may be passed between pressure rollers which cause the original conical holes 4 to assume the partially closed form shown in Fig. 5. A sealing film 6, which may be polystyrene, polyvinyl acetate, vinyl chloride copolymers, cellulose nitrate, acetate/butyrate, polyvinyl butyral, or polyvinyl formal in solution, or emulsions of similar polymer, can now be applied, but must be such as not to prevent reopening of the holes in the image areas during imaging. Finally, a sheet 7 of conventional stencil tissue may be adhered to the film 6 to facilitate handling of the stencil. The embossing &c operation may be performed on the laminate 1, 6, 7 instead of on the film 1. The completed film is attached at one edge to a backing sheet in a manner conventional for duplicating stencils.
GB34075/67A 1967-07-25 1967-07-25 Thermographic Stencil Expired GB1192452A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB34075/67A GB1192452A (en) 1967-07-25 1967-07-25 Thermographic Stencil
US746890A US3587459A (en) 1967-07-25 1968-07-23 Thermographic stencil
NL6810467A NL6810467A (en) 1967-07-25 1968-07-24
FR1575131D FR1575131A (en) 1967-07-25 1968-07-24
BE718519D BE718519A (en) 1967-07-25 1968-07-24
DE19681771888 DE1771888A1 (en) 1967-07-25 1968-07-25 Thermographic multiplication matrix

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34075/67A GB1192452A (en) 1967-07-25 1967-07-25 Thermographic Stencil

Publications (1)

Publication Number Publication Date
GB1192452A true GB1192452A (en) 1970-05-20

Family

ID=10361077

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34075/67A Expired GB1192452A (en) 1967-07-25 1967-07-25 Thermographic Stencil

Country Status (6)

Country Link
US (1) US3587459A (en)
BE (1) BE718519A (en)
DE (1) DE1771888A1 (en)
FR (1) FR1575131A (en)
GB (1) GB1192452A (en)
NL (1) NL6810467A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2256338A1 (en) * 1972-11-14 1974-05-22 Gerhard Ritzerfeld PROCESS FOR GENERATING AND / OR REPRODUCING A PRINT FORM PROVIDED WITH GRID DOTS, AND A DEVICE AND PLASTIC FILM FOR GENERATING SUCH PRINT FORM
US4526098A (en) * 1977-02-22 1985-07-02 Dl Process Co. Laser formed rotary print plate with internal sintered titanium ink reservoir
US4511520A (en) * 1982-07-28 1985-04-16 American Can Company Method of making perforated films
US4547920A (en) * 1983-10-19 1985-10-22 Sears Manufacturing Company Process for developing porosity in air impervious film and articles produced by the process
JP3811406B2 (en) * 2001-08-02 2006-08-23 デュプロ精工株式会社 Stencil making method and stencil printing machine and stencil printing machine
JP4738661B2 (en) * 2001-08-02 2011-08-03 デュプロ精工株式会社 Heat-sensitive stencil printing plate, method and apparatus for producing the same, and stencil printing machine
DE102009024874A1 (en) * 2009-06-09 2010-12-16 Nb Technologies Gmbh Screen printing form for use in printing medium, during screen printing and porous printing, has lug whose height in area of recesses is less than height of screen printing pattern carrier and pattern, respectively

Also Published As

Publication number Publication date
US3587459A (en) 1971-06-28
NL6810467A (en) 1969-01-28
DE1771888A1 (en) 1972-02-17
FR1575131A (en) 1969-07-18
BE718519A (en) 1969-01-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees