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
  • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
  • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
  • G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
  • G11B5/7025—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent containing cellulosic derivates
• • 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
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
  • C08K13/02—Organic and inorganic ingredients
• • 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
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
  • Y10T428/3179—Next to cellulosic
• • 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
  • Y10T428/31935—Ester, halide or nitrile of addition polymer

Definitions

• An ink transfer coating composition of improved temperature stability comprising a pigment dispersed in a resin, a plasticizer and a solvent system compatible with the resin.
• Low viscosity resins are preferred.
• the pigment may be finely divided rnagnetizable particles.
• Specific resins, solvents, and plasticizers are included, as well as surfactants.
• compositions of matter having or not having structure, physical form or heterogeneous arrangements of components, including those designed for use as magnetic materials and for impact transfer printing.
• Physical image transfer media such as typewriter ribbons and duplicator stencils are commonly used to transfer a visual image from one medium to another.
• Each of these transfer media comprises a supporting base of paper or plastic foil, for example, carrying a coating of a pigmented material.
• the coating composition contain a magnetizable medium so that the printed image in turn will be responsive to magnetic detecting means.
• the coating composition which is usually applied to an inert backing, such as polypropylene, polyethylene, Mylar, or other plastics or paper backings, is often applied as a thick coating.
• an inert backing such as polypropylene, polyethylene, Mylar, or other plastics or paper backings
• the thicker the coating the more expensive it is to use, as a given quantity coats less backing material.
• Current compositions also suffer from a lack of batch to batch uniformity, which reflects in part the use of natural materials. Handling of ink transfer coated tapes is often messy, resulting in a transfer of the coating composition onto the mechanical parts of the transfer unit, such as the rollers in a printing unit. This, of course, is clearly undesirable.
• an ink transfer coating ice composition that can be applied by current methods; on substrates currently in use; having better batch to batch uniformity; that are less expensive; are clean to handle; contain fewer components, and preferably of synthetic materials; and that offer a better print quality than is currently available.
• Such a composition should also lessen peeling or flaking problems from the environmental storage and use of such tapes, and have improved release characteristics, that is, the ease of transference from the backing to the object printed upon.
• compositions having superior release characteristics and improved temperature stability when applied upon a plastic or paper backing material, for example.
• These compositions include, in one case, a cellulose acetate butyrate resin, a plasticizer, such as dioctyl azelate, a solvent, such as N-propyl acetate, and a pigment dispersed therein, such as carbon black or finely divided magnetizable iron oxide.
• Alcohol soluble butyrate and cellulose acetate propionate may also be used as the resin, with an appropriate plasticizer and solvent.
• Another object is to formulate ink transfer coating compositions having improved print quality over those compositions of the prior art.
• a further object is to formulate ink transfer coating compositions that may be applied to an inert substrate in a thinner layer than is currently done, thus reducing the cost of the final product, and increasing the amount of such tape that may be stored on standard reels.
• Still another object of this invention is to formulate ink transfer coating compositions comprised entirely of synthetic components, resulting in improved batch to batch uniformity.
• a further object is to formulate ink transfer coating compositions of improved stability, resulting in a lessening of peeling or flaking of the composition from the backing than is found in the prior art.
• a further object is to formulate magnetic ink transfer coating compositions incorporating the improvements of the aforementioned objects.
• compositions of our invention have all the advantages of being able to be used with conventional and well known processes of manufacture.
• the resins used contain varying percents of aectyl, butyryl, and hydroxyl, and are generally classified by their viscosity using the A.S.T.M. falling ball viscosity test.
• Table I lists the various resins we have used by the vendor code, in this case those products made by the Eastman Chemical Products Co., the constituents therein, and lastly, the maximum viscosities of each resin that We desire to use in keeping with our In some of our formulations, we have also found it desirable to use a surfactant or Wetting agent.
• a surfactant comprising fatty amides plus polyethylene glycol ester, such as Tenlo '70, made by the Nopco Chemical Company, to be especially useful.
• other surfactants may be used.
• Plasticizers are generally added to resins to impart flexibility and ease of processing.
• the plasticizers must, of course, be compatible with the resin with which they are to be used.
• Various plasticizers may be used in formulating the compositions of our invention.
• solvents may also be used that meet the general requirements that the solvent or solvent system must dissolve the resin system used in the formulation, and the solvent to resin system, from a practical viewpoint, must evaporate at a rate which permits good coating techniques.
• the preferred solvents are listed with the preferred compositions, to follow.
• pigments may be used within the compositions of our invention. These include, for example, non-magnetics such as carbon black and zinc oxide, and finely divided magnetizable particles, such as iron oxide, iron alloys, nickel alloys, ferrites, etc. These pigments, well known in the art, impart a color characteristic to the composition, as Well as, in some cases, magnetic properties. These pigments are dispersed within the combination of resin, plasticizer and solvent.
• iron oxides ranging in size to an average particle size of 2 microns may be advantageously used within the compositions of our invention.
• One such material is known as IRN-IOO, manufactured by C. K. Williams and Co.
• Table II represents some of the general and preferred compositions within those ranges that we have discovered meet the objects of this invention. It is to be noted that in most cases there are but four constituents within each composition, and that all constituents are entirely synthetic materials, which allows excellent quality control, without the variations normally found in natural materials. Table II lists the compositions of our invention by ranges, and by preferred embodiment within each range.
• iron oxide such as carbon black, iron alloys, etc.
• compositions of this invention used for magnetic ink transfer coatings, are as follows:
• compositions and those of Table II have been made and tested for environmental stability by placing them in temperature ranges from 20 F. to at least F. for a period exceeding five days, and then subjected to print testing, which has shown no degradation of print quality over this time period. This is in marked contrast to the temperature stability of current ink transfer compositions, shown in the prior art. This temperature stability thus results in a longer shelf life and greater ease of handling with image transfer mediums utilizing the ink transfer coating composition of our invention.
• This coating composition may be applied thinner than compositions currently in use, due to the temperature stability and uniformity of the compositions, thus allowing winding a greater amount of a tape onto a given reel. Thus .25 mil coatings, instead of current .35 mil thick coatings, may 'be used.
• compositions through temperature stability and uniformity of mixing, lessen peeling problems and flaking problems found in present print compositions.
• the increased temperature stability and uniformity of these compositions results in ribbons that exude very little oil, with the result that they are very clean to handle, and do not dirty the mechanical parts with which they come into contact in the course of use. The combination of the above helps result in improved print quality.
• compositions taught by our invention would most readily be applied to one Side of a substrate, and transfer effected by impacting the other side of the substrate, as in the usual typewriter or print system, it is clear that these compositions may be utilized wherever a high quality ink transfer coating composition is required.
• a transfer sheet comprising a substrate having thereon the dried residue of a coating composition consisting essentially of, in parts by weight:
• a plasticizer comparable with said resin selected from the group consisting of dioctyl azelate, glyceryl mono ricinoleate, and glyceryl trioleate;
• composition includes a surfactant of the class consisting of fatty amides and polyethylene glycol ester.
• composition includes up to .25 part of a wetting agent of the class consisting of fatty amides and polyethylene glycol ester.
• a transfer sheet comprising a substrate having thereon the dried residue of a coating composition consisting essentially of, in parts by weight:
• a transfer sheet comprising a substrate having thereon the dried residue of a coating composition consisting essentially of, in parts by weight:

Landscapes

• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Paints Or Removers (AREA)
• Inks, Pencil-Leads, Or Crayons (AREA)

Applications Claiming Priority (1)

Publications (1)

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ID=24655281

Family Applications (1)

Country Status (9)

Cited By (10)

Families Citing this family (2)

Citations (6)

• 1967
  • 1967-08-21 US US3515590D patent/US3515590A/en not_active Expired - Lifetime
• 1968
  • 1968-07-04 GB GB3207468A patent/GB1218249A/en not_active Expired
  • 1968-07-08 NL NL6809605A patent/NL6809605A/xx unknown
  • 1968-07-26 ES ES356522A patent/ES356522A1/es not_active Expired
  • 1968-07-29 FR FR1576815D patent/FR1576815A/fr not_active Expired
  • 1968-08-12 BE BE719377D patent/BE719377A/xx unknown
  • 1968-08-16 DE DE1796015A patent/DE1796015C3/de not_active Expired
  • 1968-08-21 CH CH1257268A patent/CH529208A/de not_active IP Right Cessation
  • 1968-08-21 SE SE1121768A patent/SE357164B/xx unknown

Patent Citations (6)

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