US3619290A - Method of making magnetic transfer sheet and article - Google Patents

Method of making magnetic transfer sheet and article Download PDF

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Publication number
US3619290A
US3619290A US746194A US3619290DA US3619290A US 3619290 A US3619290 A US 3619290A US 746194 A US746194 A US 746194A US 3619290D A US3619290D A US 3619290DA US 3619290 A US3619290 A US 3619290A
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US
United States
Prior art keywords
weight
parts
wetting agent
set forth
mixture
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 - Lifetime
Application number
US746194A
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English (en)
Inventor
James E Deegan
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.)
DBS Inc
Original Assignee
Multigraphics 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 Multigraphics Inc filed Critical Multigraphics Inc
Application granted granted Critical
Publication of US3619290A publication Critical patent/US3619290A/en
Assigned to DBS, INC., A MA CORP. reassignment DBS, INC., A MA CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AM INTERNATIONAL, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • 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
    • B41M5/10—Duplicating or marking methods; Sheet materials for use therein by using carbon paper or the like
    • 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
    • Y10S428/90—Magnetic feature
    • 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
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249994—Composite having a component wherein a constituent is liquid or is contained within preformed walls [e.g., impregnant-filled, previously void containing component, etc.]
    • Y10T428/249995—Constituent is in liquid form
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y10T428/257—Iron oxide or aluminum oxide
    • 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
    • Y10T428/31906—Ester, halide or nitrile of addition polymer
    • 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
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y10T428/31913—Monoolefin polymer
    • Y10T428/3192—Next to vinyl or vinylidene chloride polymer

Definitions

  • the coating is of such character that pigments having a high agglomerative tendency, especially magnetic pigments such as iron oxide, can be used and still be carried properly from the layer along with the liquid vehicle when pressure is applied.
  • magnetic pigments this makes it possible to provide marks which embody sufficient pigment to give appropriate signal strength for scanning.
  • the result is achieved by including in the mixture an amine type wetting agent, and by providing as a portion of the volatile vehicle used to render the mixturecoatable a pair of control solvents of different types.
  • the control solvents are one of the ketone type and the other ofa nonketone type (such as ethyl acetate, 2-nitro propane, or equivalent).
  • the optimum ratio between the control solvents is usually between about 1:2 and about 1:1.
  • An object of the present invention is to overcome the aforesaid difficulties and to prepare an effective transfer composition and carbon paper of the squeeze-out type embodying an agglomerative pigment such as magnetic iron oxide.
  • This object has been achieved by including in the makeup of the transfer composition a material having wetting agent properties, and in most instances reducing materially the proportion of oil used in relation to the amount of resinous and pigment material present.
  • Suitable wetting agents for the composition in question are mainly those of the amine type with a fatty acid substituent. These are derived in many cases from natural products, and one example of a wetting agent which has proved particularly suitable is Duomeen TDO, a product of Armour Industrial Chemical Division, Armour & Company, which may be described as tallow 1,3-propylene diamine dioleate.
  • This type of wetting agent may be used alone or in conjunction with other wetting agents or emulsifying agents of the type which are compounds of long chain fatty acids, e.g. diglycol laurate. In such case at least one-third of the wettingagent mixture should consist of the amine type wetting agent.
  • These combined agents may be added in small amounts, for example, from about 1 percent up to about 33 IS percent of the oil used, to achieve the desired results.
  • the synthetic polymer is a vinyl chloride-acetate copolymer, or a copolymer mixture containing 85 percent to 95 percent vinyl chloride, (e.g. Vinylite VYHI'I, Vinylite VYLF, Vinylite VYNS and mixtures thereof).
  • nonvolatile softener is generally any oil which is nondrying and nonvolatile and which will not significantly dissolve or react with the resinous material of the solid base. Castor oil is preferably used in this connection.
  • the pigment used is preferably powdered iron oxide, but may be any magnetic pigment such as finely divided iron or other metallic powder most of which have similar agglomerative tendencies. For best results, particle sizes in the range of aboutlQto 5 Q0 millimicrons should be used.
  • Solid base Soft vinyl chloride acetate copolymcr 8588 percent vinyl chloride (mg. a mixture of Vinylite VYIIII, VY F, VYNS)... l0 Softener: Castor oil 10 Magnetic iron oxide pigmrnL. .27
  • control solvents due to cost, are normally kept to a 40 minimum proportion of the overall volatile solvent fraction, and are effective when they constitute about one-half or a little less of the total volatile liquid portion of the coating mixture.
  • composition prepared according to the formula shown in the foregoing example, or any equivalent variation thereof is compounded in the usual manner and spread in a thin film upon a flexible support, e.g. paper, polyethylene, or other flexible film, and the volatile vehicle evaporated, there results a transfer layer of exceptional quality from which a mark inspired by writing pressure or a type blow may be readily transferred to a receiving or copy sheet.
  • the mark thus produced is characterized by clean, sharp outlines and accordingly lends itself readily to automatic sensing by currently available equipment, and given particularly accurate results when thus employed.
  • test samples were made by imprint- 75 ing characters through transfer sheets of different kinds upon equivalent copy sheet surfaces, using care to keep the operating conditions uniform.
  • the resulting marks were then optically enlarged equal amounts and compared by inspection.
  • FIG. 1 is an enlargement of the mark made using a pressure responsive waxy transfer sheet of the type currently marketed for use in applications requiring magnetic pigment for automatic sensing.
  • FIG. 2 is an enlargement of the mark made using a pressure responsive transfer sheet of the type set forth in the foregoing description, and particularly with relation to the specific example, and illustrating the improved sharpness and edge regularity obtained.
  • the present invention provides a novel and improved transfer element or carbon sheet capable of furnishing a mark of distinctly improved quality for automatic sensing purposes, and giving an effective deposit under pressure even with pigments which demonstrate severely agglomerative tendencies.
  • the mark which can be made by this novel transfer layer is not only notable for the regularity of its edges as shown in the drawing, and is also characterized by a unique freedom from the danger of smudging, since no significant surface deposit is present after the effused oil has dried by absorption into the paper fibers which is virtually instantaneous.
  • a pressure responsive marking element comprising a foundation and a layer of a marking composition thereon, the composition comprising a porous resinous continuous phase and a fluent discontinuous phase including an oily liquid and a pigment, in which the composition consists essentially of:
  • a marking element as set forth in claim 5 in which the softener is castorbil and is present in an amount equal to about 10 parts by weight; the magnetic iron oxide pigment is present in an amount equal to about 27 parts by weight; and the wetting agent is present in an amount equal to about 2.8 parts by weight of which at least 1 part by weight is tallow 1,3- propylene diamine dioleate.

Landscapes

  • Duplication Or Marking (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Paints Or Removers (AREA)
US746194A 1968-07-19 1968-07-19 Method of making magnetic transfer sheet and article Expired - Lifetime US3619290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74619468A 1968-07-19 1968-07-19

Publications (1)

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US3619290A true US3619290A (en) 1971-11-09

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US746194A Expired - Lifetime US3619290A (en) 1968-07-19 1968-07-19 Method of making magnetic transfer sheet and article

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US (1) US3619290A (enrdf_load_stackoverflow)
GB (1) GB1233658A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853660A (en) * 1971-08-31 1974-12-10 Ncr Co Processes relating to sensible coatings and transfer ribbons for plastic cards thereto
US5397623A (en) * 1993-01-26 1995-03-14 Moore Business Forms, Inc. Magnetic toner offsetting spot

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL3424056T3 (pl) * 2016-02-29 2024-08-05 Lord Corporation Dodatek do cieczy magnetoreologicznych

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944037A (en) * 1956-07-19 1960-07-05 Burroughs Corp Ink-transfer compositions and duplicating media prepared therewith
US2992121A (en) * 1957-05-16 1961-07-11 Caribonum Ltd Thermosensitive colouring materials
US3467539A (en) * 1966-04-21 1969-09-16 Columbia Ribbon Carbon Mfg Ink-releasing sheets and ribbons
US3496015A (en) * 1966-11-09 1970-02-17 Columbia Ribbon Carbon Mfg Pressure-sensitive magnetic transfer elements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944037A (en) * 1956-07-19 1960-07-05 Burroughs Corp Ink-transfer compositions and duplicating media prepared therewith
US2992121A (en) * 1957-05-16 1961-07-11 Caribonum Ltd Thermosensitive colouring materials
US3467539A (en) * 1966-04-21 1969-09-16 Columbia Ribbon Carbon Mfg Ink-releasing sheets and ribbons
US3496015A (en) * 1966-11-09 1970-02-17 Columbia Ribbon Carbon Mfg Pressure-sensitive magnetic transfer elements

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853660A (en) * 1971-08-31 1974-12-10 Ncr Co Processes relating to sensible coatings and transfer ribbons for plastic cards thereto
US5397623A (en) * 1993-01-26 1995-03-14 Moore Business Forms, Inc. Magnetic toner offsetting spot

Also Published As

Publication number Publication date
GB1233658A (enrdf_load_stackoverflow) 1971-05-26

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Legal Events

Date Code Title Description
AS Assignment

Owner name: DBS, INC., A MA CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AM INTERNATIONAL, INC.;REEL/FRAME:003979/0673

Effective date: 19820325