US3375125A - Method of making transfer sheet and resultant article - Google Patents

Method of making transfer sheet and resultant article Download PDF

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Publication number
US3375125A
US3375125A US316001A US31600163A US3375125A US 3375125 A US3375125 A US 3375125A US 316001 A US316001 A US 316001A US 31600163 A US31600163 A US 31600163A US 3375125 A US3375125 A US 3375125A
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United States
Prior art keywords
coating
dispersion
transfer
sheet
coat
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Expired - Lifetime
Application number
US316001A
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English (en)
Inventor
Shenian Popkin
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to US316001A priority Critical patent/US3375125A/en
Priority to NL646410953A priority patent/NL147369B/xx
Priority to SE11523/64A priority patent/SE304172B/xx
Priority to AT837164A priority patent/AT256140B/de
Priority to CH1275164A priority patent/CH426471A/de
Priority to ES0304604A priority patent/ES304604A1/es
Priority to NO155094A priority patent/NO121988B/no
Priority to DE19641471709 priority patent/DE1471709B2/de
Priority to DK507364AA priority patent/DK120373B/da
Priority to GB41967/64A priority patent/GB1091291A/en
Priority to FR991397A priority patent/FR1418314A/fr
Application granted granted Critical
Publication of US3375125A publication Critical patent/US3375125A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41M5/10—Duplicating or marking methods; Sheet materials for use therein by using carbon paper or the like
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • 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
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • 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
    • Y10T428/253—Cellulosic [e.g., wood, paper, cork, rayon, etc.]
    • 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
    • Y10T428/254—Polymeric or resinous material
    • 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

Definitions

  • This invention relates to transfer writing and particularly to the transfer placement of marks and indicia by means of printing or writing pressure or a type blow, acting through a pressure sensitive transfer sheet of the carbon paper type.
  • Transfer sheets of the carbon paper type have, of course, been known and used for many years. Lately, however, the transfer placement of various types of record marks on the receiving surfaces of copy sheets or cards to be handled and sensed by data processing equipment has become a matter of increasing interest.
  • the use of the carbon paper or typewriter ribbon type pressure sensitive marking media for placing spots of the required properties has been suggested.
  • For data processing the use of a pressure sensitive product designed for a single pass through a character transfer apparatusis preferred. Such products have come into commercial use in connection with the use of electric typewriters and the like.
  • These properties may also be due to the character of the bottom layer, as where the bottom layer is relatively hard and of low adhesiveness so that, even though charged with a type of material to which the sensing device in question will react, it is not subject to ready displacement from a spot to which it has been applied.
  • pressure sensitive character transfer sheets or ribbons in which the sensible material is present in a separate layer sandwiched between a base stratum and a protective over-layer, while useful in overcoming some of the limitations of earlier character transfer sheets, also imposes certain restrictions on the potential use of the sheet due to the presence of the protective over-layer.
  • One of the objects of the present invention is to provide a character transfer sheet which is more responsive to different levels of applied transfer force, and which is particularly responsive to lower levels of striking force in forming transfer characters having the other combination of advantages pointed out more fully hereinafter.
  • Another object is to provide a sheet from which the release of the sensable material may be controlled more readily.
  • Another object is to provide a character transfer sheet from which characters may be transferred with an extremely well-defined edge.
  • Still another object of the invention is to provide a single surface layer from which characters may be transferred responsive to applied localized pressure but which layer 'is also smudge resistant and abrasion resistant.
  • Afurther object is to provide a character transfer sheet from which characters may be transferred in distinct intensities responsive to the application of distinct levels of transfer inducing pressure.
  • Still another object is to provide transferred characters which are both smudge resistant and abrasion resistant where these characters have been transferred from a pressure sensitive transfer sheet.
  • the objects of the present invention may be achieved by depositing on a carrier substrate sheet, two distinct layers of film forming materials, and blending of these distinctly deposited layers into a single layer under the influence of a drying heat.
  • FIGURE 1 is a schematic fragmentary sectional viewof a transfer sheet formed in accordance with the present invention.
  • Example 1 isoprene hydrochloride.
  • One such sheet is available from the Goodyear Rubber Company as a tensilized Pliofilm bearing a number 40N-1.
  • a specimen of the isoprene hydrochloride carrier film is first smoothed onto a glass plate whose surface temperature is maintained at about 40 C.
  • a basic sub-coat is first formed and a basic top coat is applied over the subecoat in the manner to produce a single unified pressure sensitive character transfer coating.
  • the basic sub-coat is formed on the carrier film as follows: A basic sub-coat dispersion is first prepared by ball milling or grinding the following ingredients:
  • the sub-coat dispersion thus prepared is applied to the substrate sheet by an appropriate spreading or film casting device such as a doctor blade or the like to apply a 1 mil wet film of the basic sub-coating lacquer to the heated carrier film.
  • the deposited lacquer is allowed to dry on the carrier film while it is maintained at a temperature of about 40 C.
  • a layer of a basic top-coating lacquer is applied over the sub-coat. This second coating of lacquer is allowed to dry under the influence of the 40 temperature at which the base coat, carrier film and supporting surface are maintained.
  • the preparation of the top coat lacquer composition is as follows: a
  • a wax blend is prepared by fusing 50 parts of pure and refined carnauba wax with 50 parts of mineral oil,
  • the wax used in this case is a product of the International Wax Refining Co.
  • the wax blend formed has a melting point of approximately 72 to 79 C.
  • a dispersion is then prepared to contain parts of this vwax blend in 95 parts of ethyl alcohol. This dispersion is subjected to a high efficiency ball milling such as that described above to reduce the size of dispersed particles to a means diameter of microns or less.
  • a solution is prepared to contain of a synthetic resin ester prepared from rosin in methyl ethyl ketone.
  • the basic top coating lacquer is applied to the basic sub-coat to a wet layer thickness of about 1 mil and is allowed to dry under the influence of the heat received from the mildly heated .substrate.
  • the transfer sheet article formed in this way is then removed from the mildly heated glass surface and allowed to cool to room temperature.
  • a portion of the transfer sheet prepared as described above was employed in stenciling characters onto a receiving surface. Clear, sharp images of the characters employed in applying pressure to the reverse side of the carrier film were observed on the receiving paper surface.
  • One distinct advantage of the formed product is that substantially complete transfer can be obtained at very low levels of impact energy of the order of about 75,000 to 100,000 ergs per character.
  • Example 2 To demonstrate the importance of the co-mingling of the top coat with the sub-coat a product was prepared in which a top coat resided as a separate and distinct stratum on the sub-coat. This product was prepared as follows:
  • a substrate of 40 mil Pliofilm was smoothly applied to the surface of a glass plate which was maintained at the prevailing ambient temperature of approximately 22 C.
  • a film of the basic sub-coating lacquer composition was applied as described in Example 1 to a wet coating thickness of 1 mil.
  • a second lacquer coating was applied.
  • the second coating was formed from the basic top coating lacquer, and it was applied in the manner also described in Example 1 with the exception, however, that methyl alcohol was substituted for the ethyl alcohol used in Example 1.
  • the thickness of the wet layer of top coating after application was again 1 mil. During the drying of the top coating a blast of unheated air was directed over the surface of the wet film to accelerate the drying time.
  • the top coat formed in this example did not penetrate into the sub-coat and was detected as a separate stratum.
  • the sheet product produced in this manner was tacky and had a tendency to be smudgy. It was also observed that the coatings thus deposited on the Pliofilm tended to be somewhat flaky.
  • the sheet product formed in this example was used in a character transfer stenciling test similar to that described in Example 1. However, it was found that the characters transferred were characterized by much poorer edge definition. Some areas of the characters which should have been formed by a uniform transfer of the coating material were found in fact to contain voids. Also the characters were surrounded by extraneous transferred markings. In general the stencilled characters as well as the product from which they were formed were definitely inferior to those produced using the method of the first example.
  • Example 3 A procedure substantially similar to that of Example 1 was repeated but in this case the ball milling was less than sufiicient to bring the particle size of the coating compositions to the range of about 10 microns or less. It was observed that the characters transferred from this ribbon were inferior in quality particularly in that the uniformity of coating was inferio particulaly with regard to the tendency toward production of void areas in the transfer characters.
  • the present invention provides a uniquely advantageous method for forming an article of improved performance capabilities in responding to pressures exerted over defined areas thereof to impart characters of like area definition to receiving surfaces.
  • the improved performance is attributed to the unified character of the transfer layer formed from two coatings.
  • the sensable component of the coating i.e., the component of the transferred material which is sensed by the data processing apparatus
  • this may be selected depending on the type of detection to be used.
  • the sensing device will be magnetic.
  • light reflecting or absorbing media such as carbon black
  • the sensing device will depend on visual or optical phenomena.
  • Electro conducting sensable material such as aluminum powder may be incorporated in the layer and used in connection with electric detection apparatus.
  • luminescent material such as zinc sulphide may alternatively be used in the transferable coating where optical detection is used.
  • the material may be radioactive, being either a natural or induced radioactive element, the detection relying on detection of emitted sub-atomic particles or short wave length electromagnetic Waves.
  • (C) Compatibility that is blendability, with the material of the top coat to be deposited thereon, under the infiuence of the solvent of the top coating composition and mild heating in the order of to 85 C. depending on the thermal and solubility characteristics of the'top coating solvents, and non-volatile components of the top and sub-coatings.
  • the binder material which has given most satisfactory performance in providing the required characteristics is ethyl cellulose having a viscosity of 10 centipoises.
  • other materials of similar characteristics may be employed such as cellulose nitrate, cellulose acetate, methyl cellulose, vinyl acetate, vinyl chloride, vinyl acetate copolymers, vinyl alcohol, and polystyrene.
  • Plasticizers may be employed to modify the properties of a binder material in the manner illustrated in the above examples to make them meet the requirements for a binder particularly pointed out above.
  • a plasticizer consisting of a combination of coumarone-indene type resin with an oil such as mineral oil, castor oil, silicone oil and the like, yields highly satisfactory results.
  • the selection of other plasticizers or combinations of plasticizers to modify binder materials for usein accordance with this invention can be made employing the knowledge available to those familiar with the art of binder materials, and through confirmation with a few tests performed for this purpose using the criteria described herewith and illustrated in the above examples.
  • a wetting agent is included in the sub-coat composition principally to assist in the milling and dispersing of the sensable component and in wetting the base film to enhance the application of the sub-coat.
  • Numerous wetting agents capable of performing these functions in the formation or application of the sub-coat composition can be selected based on information available in this art particularly when coupled with a few experiments to demonstrate the most suitable of selected materials, as well as the concentration to 'be used for satisfactory wetting depending on the particular ingredients of the composition employed.
  • the solvent used informing this sub-coat and the solvent concentration should similarly be related to the other ingredients of the composition as well as the mild heating temperature to be used and can be based on the use of the extensive information available in this art.
  • compositions and ingredients of the top coat there are three components of this top coat composition which are important to the results which are obtained through its use in connection with the present invention. These three are the wax component, the adhesive, and the solvent.
  • a Wax or wax blend which displays a balance of dispersibility, attraction for paper, as well as for the ingredients of the coatings, hardness, and the ability to undergo clean fracture.
  • a wax composition which has been found to have a particularly advantageous combinationof these properties is a blend of carnauba wax with mineral oil, parafiin wax and the other ingredients as recited in Example 1 above.
  • any of the other vegetable waxes such as ouricury, montan, candelilla and similar waxes may be employed either alone or in combination with oils, parafiin waxes, and like combining materials.
  • the blends prepared to include these combining materials should, however, exhibit the group of required properties as discussed more specifically above.
  • the temperature used must be below that at which the wax blends fuse, i.e., the finely dispersed wax particles fuse and form a continuum as such fusion impairs the product quality.
  • the quality is impaired particularly in that there is an increased tendency toward formation of transferred characters with voids or more uniform deposit of sensable material.
  • the adhesive ingredient of the top coat composition the general properties which are required in this component of the top coating composition are the following:
  • a material which has been found particularly advantageous for use in the combination recited in the Example 1 above is a diethylene glycol ester of hydrogenated rosin which is available from Hercules Powder Company as Staybelite Ester No. 2.
  • any of numerous alternate similar synthetic resin esters prepared from rosin may be used in this application where they provide the combination of properties recited a-bove.
  • adhesive materials may serve advantageously in carrying out the present invention including such materials as shellacs, low molecular Weight phenol-formaldehyde resins, and other adhesive agents of like properties.
  • the solvent must exercise a solvent action on the binder system used in the sub-coat sufficient to induce the co-mingling of top coat ingredients into the sub-coat.
  • the solvent action needed is not a complete solution of the sub-coat binder, but for a solvent action to induce the co-mingling of ingredients of the two coatings into a unified coating structure.
  • Most of the common alcohols and ketones such as the ethyl, propyl, isopropyl, and isobutyl alcohol as well as the methyl ethyl ketone and other aliphatic ketones are suitable for this purpose.
  • the carrier or base film employed in forming the sheet article of the present invention may be any paper metal foil or plastic film which has physical and chemical characteristics compatible with the coating system deposited thereon.
  • the primary consideration in this article is the nature, content, and form of the transfer coatings.
  • the carrier or base film may be selected or modified to meet the needs of the coatings. Certain characteristics predominate in this selection of base film among which are the following:
  • the chemical composition of the carrier film must be that adapted to receive and retain the materials deposited thereon and to release them uniformly under the influence of a uniform pressure applied to the uncoated surface of the film and transmitted therethrough.
  • the carrier film should be limited in thickness to permit a full realization of the capability of the deposited transfer layer to deposit characters having sharp, clear edge definition on receiving surfaces.
  • the carrier film must also possess uniform tensile and other physical properties to insure that the concentration of the transfer layer beneath a striking character will be constant and thus able to impart a uniform measure of sensable material :to the receiving surface.
  • the thermal properties of the film must be such that the film will not be adversely affected, as for example undergo dimensional distortion, due to the exposure to a temperature such as that used in the mild heating used to induce formation and co-mingling of the coating layers.
  • Some tensilized films for example may undergo shrinkage due to short exposures to temperatures in the range of to 85 C. and many are subject to shrinkage at temperatures above this range.
  • the tensile strength of the film should be adequate to prevent any significant stretching of the film under use conditions as this would reduce the amount of the sensable component deposited on the receiving surface.
  • a film which has been found to display a highly satisfactory combination of properties for the purposes described above is a 0.4 mil gauge Pliofilm of isoprene hydrochloride which may be obtained from the Goodyear Rubber Co. under the designation N-1 type.
  • Other films which may yield advantageously uniform results are Mylar type polyester, linear polyethylene, polypropylene, and irradiated polyethylene.
  • a coating on a polymeric base sheet said coating being in the form of :a dispersion with the particulate material having a maximum average particle size of approximately 10 microns, the coating containing the following ingredients:
  • a top coating depositing on said dried sub-coat a top coating, said coating being in the form of a dispersion with the particulate material having a maximum average particle size of approximately 10 microns, the top coating containing a wax blend of a vegetable wax and mineral oil in dispersion form in a lower aliphatic alcohol and a solution of a synthetic resin ester prepared from rosin in a ketonic solvent; and
  • a coating on a polymeric base sheet said coating being in the form of a dispersion with the particulate material having a maximum average particle size of approximately 10 microns, the coating containing the following ingredients:
  • a top coating said coating being in the form of a dispersion with the particulate material having a maximum average particle size of approximately 10 microns, the top coating containing 2.5 parts of carnauba wax, 2.5 parts of mineral oil, and 1.5 parts of a diethyleneglycol ester of hydrogenated rosin;

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Laminated Bodies (AREA)
  • Decoration By Transfer Pictures (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
US316001A 1963-10-14 1963-10-14 Method of making transfer sheet and resultant article Expired - Lifetime US3375125A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US316001A US3375125A (en) 1963-10-14 1963-10-14 Method of making transfer sheet and resultant article
NL646410953A NL147369B (nl) 1963-10-14 1964-09-18 Werkwijze voor het vervaardigen van velvormig kopieermateriaal en aldus vervaardigd kopieermateriaal.
SE11523/64A SE304172B (es) 1963-10-14 1964-09-25
AT837164A AT256140B (de) 1963-10-14 1964-10-01 Durchschreibematerial und Verfahren zu seiner Herstellung
CH1275164A CH426471A (de) 1963-10-14 1964-10-01 Verfahren zur Herstellung eines beschichteten Blattes
ES0304604A ES304604A1 (es) 1963-10-14 1964-10-02 Un metodo para formar un articulo en hojas revestido adecuado para su uso en la transferencia de caracteres.
NO155094A NO121988B (es) 1963-10-14 1964-10-09
DE19641471709 DE1471709B2 (de) 1963-10-14 1964-10-13 Verfahren zur herstellung eines beschichteten durchschreibeblattes
DK507364AA DK120373B (da) 1963-10-14 1964-10-14 Fremgangsmåde til fremstilling af et arkformet trykkopieringsmateriale.
GB41967/64A GB1091291A (en) 1963-10-14 1964-10-14 Method of forming a pressure-sensitive character-transfer sheet
FR991397A FR1418314A (fr) 1963-10-14 1964-10-14 Perfectionnements apportés aux procédés pour l'établissement d'articles servant au transfert de marques, repères ou signes, et à de tels articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US316001A US3375125A (en) 1963-10-14 1963-10-14 Method of making transfer sheet and resultant article

Publications (1)

Publication Number Publication Date
US3375125A true US3375125A (en) 1968-03-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
US316001A Expired - Lifetime US3375125A (en) 1963-10-14 1963-10-14 Method of making transfer sheet and resultant article

Country Status (10)

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US (1) US3375125A (es)
AT (1) AT256140B (es)
CH (1) CH426471A (es)
DE (1) DE1471709B2 (es)
DK (1) DK120373B (es)
ES (1) ES304604A1 (es)
GB (1) GB1091291A (es)
NL (1) NL147369B (es)
NO (1) NO121988B (es)
SE (1) SE304172B (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049860A (en) * 1975-11-19 1977-09-20 Hoffmann & Engelmann Paper support carrying anti-adhesive layer
US4581283A (en) * 1981-04-21 1986-04-08 Nippon Telegraph & Telephone Public Corporation Heat-sensitive magnetic transfer element

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1546747A (en) * 1922-08-04 1925-07-21 Kee Lox Mfg Company Carbon paper and method of making same
US2318096A (en) * 1940-09-04 1943-05-04 All Purpose Gold Corp Transfer sheet
US2762715A (en) * 1949-03-30 1956-09-11 Columbia Ribbon Carbon Mfg Pressure sensitive hectograph transfer element
FR1287122A (fr) * 1960-04-22 1962-03-09 Procédé pour la fabrication de feuilles d'encrage pour polycopie et feuilles d'encrage obtenues
US3029157A (en) * 1958-11-18 1962-04-10 Audio Devices Inc Magnetizable image transfer medium
US3031327A (en) * 1959-11-20 1962-04-24 Columbia Ribbon & Carbon Method of preparing transfer sheets
US3062676A (en) * 1959-09-09 1962-11-06 Columbia Ribbon & Carbon Smudge-resistant pressure-sensitive transfer element for placing smudgeresistant marks

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1546747A (en) * 1922-08-04 1925-07-21 Kee Lox Mfg Company Carbon paper and method of making same
US2318096A (en) * 1940-09-04 1943-05-04 All Purpose Gold Corp Transfer sheet
US2762715A (en) * 1949-03-30 1956-09-11 Columbia Ribbon Carbon Mfg Pressure sensitive hectograph transfer element
US3029157A (en) * 1958-11-18 1962-04-10 Audio Devices Inc Magnetizable image transfer medium
US3062676A (en) * 1959-09-09 1962-11-06 Columbia Ribbon & Carbon Smudge-resistant pressure-sensitive transfer element for placing smudgeresistant marks
US3031327A (en) * 1959-11-20 1962-04-24 Columbia Ribbon & Carbon Method of preparing transfer sheets
FR1287122A (fr) * 1960-04-22 1962-03-09 Procédé pour la fabrication de feuilles d'encrage pour polycopie et feuilles d'encrage obtenues

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049860A (en) * 1975-11-19 1977-09-20 Hoffmann & Engelmann Paper support carrying anti-adhesive layer
US4581283A (en) * 1981-04-21 1986-04-08 Nippon Telegraph & Telephone Public Corporation Heat-sensitive magnetic transfer element

Also Published As

Publication number Publication date
GB1091291A (en) 1967-11-15
CH426471A (de) 1966-12-15
ES304604A1 (es) 1965-03-01
NL147369B (nl) 1975-10-15
DK120373B (da) 1971-05-17
NO121988B (es) 1971-05-03
DE1471709B2 (de) 1973-05-17
DE1471709A1 (de) 1968-12-19
AT256140B (de) 1967-08-10
SE304172B (es) 1968-09-16
NL6410953A (es) 1965-04-15

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