US3640750A - Transfer copy process and material - Google Patents

Transfer copy process and material Download PDF

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Publication number
US3640750A
US3640750A US3640750DA US3640750A US 3640750 A US3640750 A US 3640750A US 3640750D A US3640750D A US 3640750DA US 3640750 A US3640750 A US 3640750A
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US
United States
Prior art keywords
sheet
weight
parts
coating
layer
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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
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English (en)
Inventor
Walter Schutzner
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W Koreska GmbH
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W Koreska GmbH
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124—Duplicating 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124—Duplicating 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
    • B41M5/132—Chemical colour-forming components; Additives or binders 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/914—Transfer or decalcomania
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/3188—Next to cellulosic
    • Y10T428/31895—Paper or wood

Definitions

  • ABSTRACT An upper sheet and a lower sheet are provided, adapted to be superimposed to form an interface between said sheets, and are coated on said interface with all ingredients required for a heat-induced, color-producing chemical reaction.
  • the upper sheet has on a side adapted to form said interface a coating which contains at least one of said ingredients and which is 10- cally transferable to said lower sheet under the action of writing pressure applied to said upper sheet.
  • TRANSFER COPY PROCESS AND MATERHAL This invention relates to a process of making multiple records with the aid of color-producing chemical reactions. More particularly, the invention is concerned with a novel transfer copy system.
  • Another class of processes are based on color-producing chemical reactions.
  • each sheet is provided on its rear with an inherently colorless substance giving a color-producing chemical reaction upon contact with a second colorless substance selected to match the first substance.
  • the second substance is provided as a coating on the face of the succeeding sheet.
  • part of the first substance is transferred to the copy sheet, where it contacts the second substance so that the reaction takes place immediately.
  • the process according to the invention is mainly characterized in that at least one of the ingredients required for the reaction is transferred under the action of the writing pressure to a copy sheet, where it is contacted with any other ingredients which may be required for such reaction, and the reaction is subsequently effected by heating.
  • a copying material consisting of at least two superimposed sheets. At least one of the ingredients required for the color-producing reaction is contained in a coating provided on the underside of the upper sheet and adapted to be transferred by local pressure onto the underlying sheet. That coating preferably contains a film-forming binder, desirably having a loosened, particulate structure. Such structure may be obtained, e.g., by an incorporation of waxes or waxlike substances.
  • the lower sheet is provided on its upper face with a receiving coating containing a waxlike binder and, if required, one or more of the other ingredients required for the reaction.
  • all ingredients required for the color-producing reaction may be incorporated in the transferable coating. in this case, it is sufficient to provide a receiving coating which contains a waxlike binder only, which upon a temperature rise acts as a solvent for at least one of the two ingredients.
  • cover layer over the transferable coating, the cover layer consisting preferably of waxlike substances, similar to the receiving coating previously mentioned, and which causes the particles detaching from the transferable coating under the action of the writing pressure to adhere to ordinary paper.
  • the waxlike substances in the covering or in the receiving coating are preferably selected to melt at a temperature in the range of 60150 C.
  • the waxlike substance may be one of the reactants, e.g., a heavy metal soap.
  • the uppermost sheet should have a coating on the underside only and the lowermost sheet on the upper side only whereas the intermediate sheets are provided with coatings on both sides.
  • EXAMPLE 1 The following ingredients were jointly ground in a ball mill: 5 parts by weight Vinylite VYHl-Ll (a polyvinylchlorideacetate copolymer) 45 parts by weight kaolin 30 parts by weight methyl gallate 200 parts by weight acetone.
  • VYHl-Ll a polyvinylchlorideacetate copolymer
  • the resulting mix was applied to writing paper as a coating having a dry weight of 5-6 grams per. square meter. This coating forms the rear side of the sheet.
  • the sheet is provided on its forward face with a receiving coating having the following composition:
  • the mixture is fused and applied to the paper as a coating having a weight of 2-3 grams per square meter.
  • the application of pressure e.g., by the impact of a type or by a pencil or ball point pen, will cause parts of the transferable coating to be transferred to the receiving coating where the transferred matter remains invisible initially.
  • a black writing will be produced.
  • the sheet may be heated by means of a heated roll, a hotplate or a flatiron.
  • the writing may be developed by infrared radiation or by a hot air stream. It is essential, however, that the heating is sufficient to melt at least one ingredient, in the present case the mixture of ozokerite and ferric stearate, so that the reaction with the methyl gallate is initiated at those portions which correspond to the writing.
  • EXAMPLE 2 The rear side of a writing paper is provided similarly with a coating having the following composition: 5 parts by weight Vinylite VYHH-l 10 parts by weight cetyl alcohol 50 parts by weight kaolin 25 parts by weight dimethylglyoxime 200 parts by weight acetone.
  • the coating has a dry weight of 5-6 grams per square meter.
  • the receiving coating consists of a mixture of 10 parts by weight ozokerite 2 parts by weight nickel stearate A red writing is formed.
  • EXAMPLE 3 A transferable coating is produced using the following composition: 5 parts by weight Vinylite VYHH-l 50 parts by weight kaolin 10 parts by weight dithioxamide 150 parts by weight acetone.
  • the receiving coating may consist of the same mixture as in Example 2.
  • a black writing is formed.
  • the transferable coating is applied using the following mixture: 5 parts by weight ethyl cellulose I 50 parts by weight kaolin parts by weight potassium rhodanide 200 parts by weight denatured alcohol.
  • the receiving coating consists of the following mixture: 8 parts by weight microcrystalline wax 2 parts by weight polyethylene 2,000-5,000 2 parts by weight cobalt stearate.
  • EXAMPLE 6 The malachite green-lactone mentioned in Example 5 is replaced by the same amount of N-phenyl leukoauramine.
  • the receiving coating has the composition described in Example 5. A blue writing is obtained.
  • EXAMPLE 7 The transferable coating is made from 60 parts by weight ozokerite 30 parts by weight petroleum jelly 10 parts by weight dodecylgallate.
  • Example 1 The ingredients are fused together.
  • the melt is applied to form a coating having a weight of 5-6 grams per square meter.
  • the forward side of the sheet is provided with a receiving coating as stated in Example 1.
  • a black writing is obtained just as in Example 1.
  • EXAMPLE 8 EXAMPLE 9
  • the transferable coating on the rear side of the sheet may be covered with a dispersion of polyethylene (molecular weight 4,000-6,000) in gasoline, Paraffin may be added to the dispersion, if desired.
  • Writing pressure applied to such writing sheet will cause a transfer of the reactive substances to any desired paper surface, which may be uncoated. Undesired copies will not be formed unless the sheet is subsequently heated.
  • EXAMPLE 10 If the zinc dibutyldithiocarbamate mentioned in Example 8 is replaced by about 12 grams mercury monobenzyldithiocarbamate, a black writing will form on the copy sheet after a heat treatment. In this case it will be suitable to replace the ferric stearate by the same amount ofa wax which does not participate in the reaction, such as cetyl alcohol. That wax loosens the structure of the binder or of the entire coating so as to ensure an adequate transfer of the transferable coating to the receiving coating.
  • a wax which does not participate in the reaction such as cetyl alcohol. That wax loosens the structure of the binder or of the entire coating so as to ensure an adequate transfer of the transferable coating to the receiving coating.
  • mercury monobenzyldithioearba mate may be replaced by other colorless or brightly colored salts of derivatives of dithiocarbamic acid, such as are mentioned in the US. Pat. No. 2,999.035.
  • reactants for monomolecular color-producing reactions will mainly be used in transferable coatings to be transferred to any desired paper, which may be uncoated.
  • Bimolecular reactions are particularly suitable in transfer copy systems because they afford an absolute safety against formation of undesired copies and enable to produce writings in different colors by selection of suitable reactants.
  • different areas of the copy sheet may be provided with receiving coatings having different compositions selected so that writings in different colors will be produced as a result of the cooperation of such receiving coatings with one and the same transferable coating on a subsequent heat treatment.
  • a uniform receiving coating may be combined with transferable coatings containing different reactants selected to give writings in different colors on one and the same copy sheet.
  • one of the two cooperating coatings e.g., the receiving coating
  • FIGS. 1 to 3 shows in FIGS. 1 to 3 three different embodiments of parts of sets of copying sheets in greatly exaggerated thickness in fragmentary vertical sectional views.
  • FIG. 1 shows a top sheet 10,an intermediate sheet 20 and a bottom sheet 30. It will be apparent that the top sheet 10 and the bottom sheet 30 are upper and lower sheets, respectively, with respect to the intermediate sheet 20, and that the latter is a lower sheet with respect to the top sheet 10 and an upper sheet with respect to the bottom sheet 30.
  • the top sheet 10 has a backing layer 11 of paper and a transferable coating 12 facing the intermediate sheet 20.
  • the intermediate sheet 20 has a core layer 21 of paper, a receiving coating 22 facing the coating 12 and a transferable coating 23 facing the bottom sheet 30.
  • the bottom sheet 30 has a backing layer 31 of paper and a receiving coating 32 facing the transferable coating 23.
  • the transferable coatings 12 and 23 and the receiving coatings 22 and 32 may be composed as described for such coatings in Examples 1 to 7.
  • FIG. 2 shows a top sheet 40, an intermediate sheet 50, and a bottom sheet 60. It will be apparent that the top sheet 40 and the bottom sheet 60 are upper and lower sheets, respectively, with respect to the intermediate sheet 50, and that the latter is a lower sheet with respect to the top sheet 40 and an upper sheet with respect to the bottom sheet 30.
  • the top sheet 40 has a backing layer 41 of paper and a transferable coating 42 facing the intennediate sheet 40.
  • intermediate sheet 50 has a core layer 51 of paper, a receiving coating 52 facing the coating 42 and a transferable coating 53 facing the bottom sheet 60.
  • the bottom sheet 60 has a core layer 61 of paper and a receiving coating 62 facing the coating 53.
  • the transferable coatings 42 and 53 and the receiving coatings 52. and 62 may be composed as described for such coatings in Examples 8 and 10.
  • FIG. 3 shows an upper sheet 70 and a lower sheet 80.
  • the upper sheet 70 has a backing layer 71 of paper and a transferable coating 72, which is covered by a coating 73 of wax or waxlike material, e.g., as described in Example 9.
  • the lower sheet 80 consists on its surface facing the coating 73 of a material to which the material of the coating 73 can adhere.
  • the transferable coating 72 may be composed as described for such coating in Examples 8 and 10.
  • a method of producing a copy comprising the steps of:
  • a transferable layer consisting essentially of a polymeric binder, a pigmentatious or filler substance and a heater-activatable colorant for producing a visible image upon solubilization in molten wax and substantially nontransferable under pressure to nonwaxy bases, and coated on its opposite surface with a receiving layer of a wax preferentially accepting said colorant to produce a latent image, said stack having the transfer layer of one sheet in contact with the receiving layer of an adjoining sheet; applying local pressure to said stack to effect a localized transfer of the colorant from one sheet to the receiving layer of the adjoining sheet and forming a substantially invisible trace therein; and heating the receiving layer of said adjoining sheet substantially to the melting point of said wax, thereby rendering visible the trace formed in the receiving layer by the transferred colorant, the transferable layer consisting essentially of 5 parts by weight of a polyvinyl chloride-vinyl acetate copolymer, 45 parts by weight of ka
  • a multiple copy paper comprising a flexible substrate having a pair of opposite surfaces; a first layer coated onto one of said surfaces and consisting of a composition transferable under pressure substantially only to a waxy coating and composed essentially of a synthetic resin binder, pigmentatious or filler material imparting coloration to said layer, and at least one thermally activatable color precursor producing a visible trace upon heating in melted wax; and a waxy receiving layer on the other surface preferentially receiving a transfer of said color precursor upon the application of local pressure to a similar sheet and confronting same with its color-precursorcontaining layer to produce a substantially invisible latent image of the trace produced by such local pressure whereby the trace is rendered visible upon heating of the receiving layer
  • the first layer consisting essentially of 5 parts by weight of a polyvinyl chloride-vinyl acetate copolymer, 45 parts by weight of kaolin, 20 parts by weight of ferric stearate and 10 parts by weight of zinc dibutyldithiocarbarnate, said receiving layer consisting of

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Color Printing (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
US3640750D 1967-11-13 1968-10-17 Transfer copy process and material Expired - Lifetime US3640750A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1019167A AT292031B (de) 1967-11-13 1967-11-13 Verfahren zur Herstellung mehrfacher Aufzeichnungen
DE19681809407 DE1809407A1 (de) 1967-11-13 1968-11-16 Verfahren zur Herstellung von mehrfachen Aufzeichnungen

Publications (1)

Publication Number Publication Date
US3640750A true US3640750A (en) 1972-02-08

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Application Number Title Priority Date Filing Date
US3640750D Expired - Lifetime US3640750A (en) 1967-11-13 1968-10-17 Transfer copy process and material

Country Status (8)

Country Link
US (1) US3640750A (enrdf_load_stackoverflow)
AT (1) AT292031B (enrdf_load_stackoverflow)
BE (1) BE723646A (enrdf_load_stackoverflow)
CH (1) CH516996A (enrdf_load_stackoverflow)
DE (1) DE1809407A1 (enrdf_load_stackoverflow)
FR (1) FR1602127A (enrdf_load_stackoverflow)
GB (1) GB1251978A (enrdf_load_stackoverflow)
NL (1) NL6816013A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983279A (en) * 1973-07-19 1976-09-28 General Company, Ltd. Multiple heat-sensitive copying medium
US4784876A (en) * 1986-12-31 1988-11-15 Lynwood Graphics, Inc. Sympathetic ink and developer system
US5087283A (en) * 1990-01-02 1992-02-11 Dixon Marvin P Sympathetic ink for ink jet printer
US5234732A (en) * 1991-03-18 1993-08-10 Philip Morris Inc. Tamper-indicating wrappers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375492A (en) * 1981-05-22 1983-03-01 Appleton Papers Inc. Dielectric record material
US4905036A (en) * 1986-10-29 1990-02-27 Brother Kogyo Kabushiki Kaisha Image forming process and system, including heating step or device for increased density of images

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB835930A (en) * 1957-03-20 1960-05-25 Caribonum Ltd Improvements in or relating to duplicating systems
GB852131A (en) * 1956-04-09 1960-10-26 Caribonum Ltd Improvements in or relating to manifolding papers
US3011905A (en) * 1959-09-09 1961-12-05 Columbia Ribbon & Carbon Manifold system comprising reactant donor and receptor sheets
US3168864A (en) * 1960-09-28 1965-02-09 Minnesota Mining & Mfg Lithographic printing plate and method of producing an image thereon

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB852131A (en) * 1956-04-09 1960-10-26 Caribonum Ltd Improvements in or relating to manifolding papers
GB835930A (en) * 1957-03-20 1960-05-25 Caribonum Ltd Improvements in or relating to duplicating systems
US3011905A (en) * 1959-09-09 1961-12-05 Columbia Ribbon & Carbon Manifold system comprising reactant donor and receptor sheets
US3168864A (en) * 1960-09-28 1965-02-09 Minnesota Mining & Mfg Lithographic printing plate and method of producing an image thereon

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983279A (en) * 1973-07-19 1976-09-28 General Company, Ltd. Multiple heat-sensitive copying medium
US4784876A (en) * 1986-12-31 1988-11-15 Lynwood Graphics, Inc. Sympathetic ink and developer system
US5087283A (en) * 1990-01-02 1992-02-11 Dixon Marvin P Sympathetic ink for ink jet printer
US5234732A (en) * 1991-03-18 1993-08-10 Philip Morris Inc. Tamper-indicating wrappers

Also Published As

Publication number Publication date
CH516996A (de) 1971-12-31
GB1251978A (enrdf_load_stackoverflow) 1971-11-03
DE1809407A1 (de) 1970-06-11
NL6816013A (enrdf_load_stackoverflow) 1969-05-16
FR1602127A (enrdf_load_stackoverflow) 1970-10-12
BE723646A (enrdf_load_stackoverflow) 1969-04-16
AT292031B (de) 1971-08-10

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