GB844695A - Method of preparing duplicating or negative master sheet - Google Patents

Method of preparing duplicating or negative master sheet

Info

Publication number
GB844695A
GB844695A GB35553/56A GB3555356A GB844695A GB 844695 A GB844695 A GB 844695A GB 35553/56 A GB35553/56 A GB 35553/56A GB 3555356 A GB3555356 A GB 3555356A GB 844695 A GB844695 A GB 844695A
Authority
GB
United Kingdom
Prior art keywords
sheet
original
master
coating
sheets
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
GB35553/56A
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.)
Ditto Inc
Original Assignee
Ditto Inc
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 Ditto Inc filed Critical Ditto Inc
Publication of GB844695A publication Critical patent/GB844695A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41LAPPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L1/00Devices for performing operations in connection with manifolding by means of pressure-sensitive layers or intermediaries, e.g. carbons; Accessories for manifolding purposes
    • B41L1/20Manifolding assemblies, e.g. book-like assemblies
    • B41L1/34Manifolding assemblies, e.g. book-like assemblies for making masters for hectographic duplicators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/025Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/04Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet using solvent-soluble dyestuffs on the master sheets, e.g. alcohol-soluble

Landscapes

  • Photosensitive Polymer And Photoresist Processing (AREA)

Abstract

844,695. Photo-mechanical printing surfaces. DITTO Inc. Nov. 21, 1956 [Nov. 21, 1955], No. 35553/56. Class 98(2) [Also in Group XVI] A method of preparing a master printing sheet comprises forming an assembly of sheets in contact with each other, the sheets comprising an original imaged sheet having text or design portions adapted to absorb heat in contact with a second sheet having a fusible coating thereon, exposing the surface of the original sheet to infra-red radiation to cause portions of the fusible coating corresponding to the text or design to adhere to the original sheet, and separating the sheets. The method is applicable to the production of master sheets for use in spirit duplicating processes, hectographic processes, and planographic or lithographic processes, the coating on the second sheet being chosen in accordance with the process for which the master to be prepared is to be used. As shown, the imaged original sheet 1 with the imaged side facing outwards is clamped, together with the second sheet 3 having a coating 4, on a cylinder 6 and rotated past a slot 9 in a member 8 beneath which is an infra-red source 10. The source 10 preferably has an intensity of 1,350 watts and is placed 1/16 inch from the surface of the original sheet. The rotation of the cylinder is such that the exposure time is 1/10 second. On removing the second sheet from the original sheet the back of the original sheet has imaged portions which correspond to and are a mirrorimage of the original image on the front of the sheet. The back of the sheet 1 may then be used as a master sheet for direct printing as in a spirit duplicating process. When the master is to be used in offset printing processes a direct reading image may be obtained by placing the original sheet face downwards on the sheet 3. Instead of a master sheet, a stencil or negative may be prepared by exposing the original sheet and a sheet coated with a marking medium which is opaque to ultra-violet radiation and yet becomes tacky or liquid when exposed to heat. After exposure the coating will be drawn away on the original sheet leaving a stencil or negative having areas transparent to ultra-violet light and corresponding to the original image and through which a sensitized plate may be exposed.
GB35553/56A 1955-11-21 1956-11-21 Method of preparing duplicating or negative master sheet Expired GB844695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US844695XA 1955-11-21 1955-11-21

Publications (1)

Publication Number Publication Date
GB844695A true GB844695A (en) 1960-08-17

Family

ID=22185156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35553/56A Expired GB844695A (en) 1955-11-21 1956-11-21 Method of preparing duplicating or negative master sheet

Country Status (4)

Country Link
BE (1) BE577286Q (en)
FR (1) FR1165125A (en)
GB (1) GB844695A (en)
NL (2) NL212359A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230875A (en) * 1963-01-16 1966-01-25 Columbia Ribbon & Carbon Thermographic duplication

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129661A (en) * 1960-03-31 1964-04-21 Columbia Ribbon & Carbon Novel duplicating processes
US3203344A (en) * 1961-02-13 1965-08-31 Columbia Ribbon & Carbon Lithographic printing plate imaging process
NL275631A (en) * 1961-03-08
NL299360A (en) * 1962-10-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230875A (en) * 1963-01-16 1966-01-25 Columbia Ribbon & Carbon Thermographic duplication

Also Published As

Publication number Publication date
FR1165125A (en) 1958-10-20
BE577286Q (en) 1959-07-31
NL212359A (en)
NL103022C (en)

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