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GB839141A - Copy-making paper stationery sheets - Google Patents

Copy-making paper stationery sheets

Info

Publication number
GB839141A
GB839141A GB3627757A GB3627757A GB839141A GB 839141 A GB839141 A GB 839141A GB 3627757 A GB3627757 A GB 3627757A GB 3627757 A GB3627757 A GB 3627757A GB 839141 A GB839141 A GB 839141A
Authority
GB
United Kingdom
Prior art keywords
coating
copy
methyl cellulose
donor
making paper
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
GB3627757A
Inventor
Donald Brogden
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.)
Kalamazoo PLC
Original Assignee
Kalamazoo PLC
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 Kalamazoo PLC filed Critical Kalamazoo PLC
Priority to GB3627757A priority Critical patent/GB839141A/en
Priority to FR1208694D priority patent/FR1208694A/en
Publication of GB839141A publication Critical patent/GB839141A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B41M5/124Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/1246Application of the layer, e.g. by printing
    • 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
    • B41M5/10Duplicating or marking methods; Sheet materials for use therein by using carbon paper or the like

Landscapes

  • Color Printing (AREA)

Abstract

839,141. Copy-making paper. KALAMAZOO Ltd. Sept. 30, 1958 [Nov. 21, 1957], No. 36277/57. Class 96. A primary copy-making paper stationery sheet has on at least one of its surfaces a donor film formed from a pigmented colloidal emulsion, the dispersed phase of which consists of a mixture of Spirit Blue base and a waxy material, e.g. a soft ester wax known as Hoechst B.J. wax (bleached) mixed with dibutyl phthalate and, if desired, with stearic acid and potassium carbonate and the continuous phase is a watersoluble film-forming substance, e.g. methyl cellulose. A barrier coating, e.g. of methyl cellulose and potassium carbonate may be applied, in the form of an aqueous solution, to the paper prior to the pigmented emulsion. The surface of a secondary sheet on which the copy is received is preferably coated with an acidic acceptor coating, e.g. consisting of china clay, staich, and rosin size, or methyl cellulose, colloidal silica and phosphoric acid which reacts with the donor coating when transferred under the impact of typing or pressure from a pen or pencil to give a blue dye salt. When a plurality of copies are required, each secondary sheet is provided with a donor coating on one side and an acceptor coating on the other side.
GB3627757A 1957-11-21 1957-11-21 Copy-making paper stationery sheets Expired GB839141A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3627757A GB839141A (en) 1957-11-21 1957-11-21 Copy-making paper stationery sheets
FR1208694D FR1208694A (en) 1957-11-21 1958-11-17 Sheet of reproducing paper used in stationery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3627757A GB839141A (en) 1957-11-21 1957-11-21 Copy-making paper stationery sheets

Publications (1)

Publication Number Publication Date
GB839141A true GB839141A (en) 1960-06-29

Family

ID=10386638

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3627757A Expired GB839141A (en) 1957-11-21 1957-11-21 Copy-making paper stationery sheets

Country Status (2)

Country Link
FR (1) FR1208694A (en)
GB (1) GB839141A (en)

Also Published As

Publication number Publication date
FR1208694A (en) 1960-02-25

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