CA1195114A - Heat-sensitive magnetic transfer element - Google Patents

Heat-sensitive magnetic transfer element

Info

Publication number
CA1195114A
CA1195114A CA000398280A CA398280A CA1195114A CA 1195114 A CA1195114 A CA 1195114A CA 000398280 A CA000398280 A CA 000398280A CA 398280 A CA398280 A CA 398280A CA 1195114 A CA1195114 A CA 1195114A
Authority
CA
Canada
Prior art keywords
heat
transfer element
transferring layer
magnetic
wax
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
CA000398280A
Other languages
French (fr)
Inventor
Yukio Tokunaga
Yasuhisa Ikeda
Tadao Seto
Yoshikazu Shimazaki
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.)
Fujicopian Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Fuji Kagakushi Kogyo Co Ltd
Nippon Telegraph and Telephone Corp
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 Fuji Kagakushi Kogyo Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Fuji Kagakushi Kogyo Co Ltd
Application granted granted Critical
Publication of CA1195114A publication Critical patent/CA1195114A/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
    • B41M5/26Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/382Contact thermal transfer or sublimation processes
    • B41M5/38285Contact thermal transfer or sublimation processes characterised by magnetic components in the transfer ink
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/12Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
    • G06K1/126Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by photographic or thermographic registration
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/90Magnetic feature
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/913Material designed to be responsive to temperature, light, moisture
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/914Transfer or decalcomania
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24893Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495Thickness [relative or absolute]
    • Y10T428/24967Absolute thicknesses specified
    • Y10T428/24975No layer or component greater than 5 mils thick
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256Heavy metal or aluminum or compound thereof
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256Heavy metal or aluminum or compound thereof
    • Y10T428/257Iron oxide or aluminum oxide
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31931Polyene monomer-containing
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31935Ester, halide or nitrile of addition polymer
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31938Polymer of monoethylenically unsaturated hydrocarbon

Abstract

Title: Heat-sensitive magnetic transfer element Abstract Heat-sensitive magnetic transfer element for printing a magnetic image to be recognized by a magnetic ink character reader (MICR), comprising a heat-resisting foundation and a heat-sensitive trasferrring layer provided on the foundation, the transferring layer which includes a ferromagnetic substance powder and has a melting point of 50 to 120°C. being readily melted and transferred on a receiving paper in the form of magnetic image by a thermal printer.

Description

~95~
- 2 BAC~ROUND OF THE IN~rENTION
The present invention relates to a heat-sensitive magnetlc transfer element and more particularly to a heat-sensitive magnetic transfer element which allows a thermal printer to prepare a printed magnetic image recognized by a magne-tic ink character reader The magnetic ink character reader (hereinafter referred to as MICR) can read and recognize the certain printed magnetic image, such as character, or mark, which is printed to bill, check, credit card, pass, traffic census card, or the like. A magne~ic head in the MICR
converts the variations of magnetic portions corresponding to various characters and marks into predetermined signals, and volt;ages are detected to recognize the characters and marks.
In that case, it is necessary that each of the charcters and marks to be read by the magnetic head has a certain shape, dimensions and allowable ranges of dimensions in addition to the certain magnetic signal levels. Therefore, the allowable ranges as to E13B type face employed in American Bank Association are defined in JIS C 6251 (Japanese Industrial Standard).
E13B type face defined in JIS C 6251 consists of 10 numbers (0 to 9) and 4 special marks. According to JIS C 6251~ a character height, a character width, a corner radius, allowable ranges of those and an allowable range of a void with respect to each character are described. In addition to E13B type face, CMC7 type face is well known as type face for MICR. CMC7 type face is formed by arranging 7 longitudinal bars with 2 kinds of intervals, and each of CMC7 type faces can be magnetically recognized by combinations of 2 kinds of intervals. Thus, CMC7 type faces consist of 10 numbers, 26 large alphabets and 5 special marks, and dimensions and magnetic property of CMC7 type face are determined by European Computer Manufactures Association.
The prin~ed image of the above type ace for MICR is formed by transferring a magnetic ink onto a receiving paper by an impact printer such as typewriter.
The magnetic ink including a magnetic substallce powcler is coated and dried on a foundation such as plas~lc film to form a pressure-sensitive magntic transfer element.
Such a pressure-sensitive magnetic transfer element is disclosed in, for example, Japanese Patent Publication No. 21449/1970.
However~ the use of the pressure-sensitive magnetic transfer element results in generating noise due to impact system, and further cannot perform high printing speed. In addition, the above transfer element tends to generate voids in the printed magnetic image.

OBJECTS OF THF. INVENTION
.. . .
A main object of the invention is to provide a heat-sensitive magnetic transfer element which can easily produce a printed magnetic image by a thermal printer with hlgh printing speed without generating noise .
Another object of the invention is to provide a heat-sensitive magnetic transfer element which can produce a printed magnetic image having high accuracy of dimensions and high magnetlc pro~erties.
Other objects and advantages of the invention will become apparent from the following descriptions with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE IN~ENrION
Fig. 1 is a schematically sectional view for showing an embodiment of a heat-sensitive magnetic transfer element of the invention; and ~ ig. 2 is a explanatory view for showing a printing method using a heat-sensitive magnetic transfer element of the invention.
DFTAILED EXPLANATION OF THE INVENTION
Fig. 1 shows a heat-sensitive magnetic transfer element according to the invention comprising a heat--- '1 --resisting foundation 1, and a heat-sensitive transferring laver 2 including a ferromagnetic substance powder and having a melting temperature of 50 to :L2~C., which is measured at a heating-up velocity of 40C./min. by Meihosha-type melting point measuring device available from Meihosha ~actory Ltd.
The heat-sensitive transferring layer 2 is one layer formed by uniformly admixing a binder material of wax and/or thermoplastic resin including, if necessary, additives such as fat and oil, extender pigment, or dispersant, with the magnetic substance powder. Such a transferring layer can be obtained by means of ~lot-melt coating or solvent coating.
The magnetic substance powder is pre:Eerably included in the heat-sensitive transferring layer 2 at a range of 30 to 97 % by weight per total amount of the transferring layer 2. When the magnetic substance powder content is less than the above range, the magnetic properties of the printed image are lowered, whereby reading of MICR becomes difficult. On the other hand, when the magnetic substance powder content is more than the above range, the melt-transfer property of the transferring layer 2 and the adhesion strength of the printed image against the image receiving paper are lowered.
In the case that the heat-sensitive transferring layer 2 is provided on the heat-resisting foundation 1 by means of hot-melt coating, wax is preferably employed as a main ingredient of the binder material to prepare the heat-sensitive transferring layer. In that case, 30 to 97 % by weight of the ferromagnetic substance powder, 20 to 70 % by weight of wax, n to 30 ~ by weight of thermoplastic resin~ o to 30 % by weight of fat and oil, 0 to 30 % by weight of extender pigment and 0 to 2 % by weight of dispersant are used per total amount of the heat-sensitive transferring layer 2.
In the case that the heat-sensitive 95~

trans-Eerring ].ayer 2 is provided on the heat-resisting :Eollndati.on l by means o solvent coating, 3n to ~7 ~ by weight of t~e ferromagnetic su~s~ance powder, ~ to 2() %
by weight of wax, 20 to 7n ~ by we;.ght o:E thermoplastic resin, 0 to 30 ~ by we;ght o:E fat and oil, 0 to 3() % by weight of extender pigment and n to 2 % by weight of clispersant are used per total amonnt of the heat-sensitive trans:Eerring layer~ and are homogeneously dispersed in organic solvent such as toluene, metilyl ethyl ketone, methyl isobutyl ketone, cyclohexane, butyl butyrate, dioxane, or ethyl-benzene.
An example of the ferromagnetic substance powder is ~-Fe2O3, ~-Fe2O3 inclllding Co, Fe3O4, Fe3O4 including Co, CrO2, Co-Cr alloy, Co-Fe alloy, Co-Ni-P
alloy, Co-Ni-Fe alloy, Co-Ni-Fe-B alloy, Co-Ni-~n alloy, Fe-Mn-Zn alloy, ~e-Co-Ni-Cr alloy, Fe-Co-Ni-P alloy, Ni-Co alloy, or the like. The aspect ratio (L/D) of the ferromagnetic substance powder mentioned above is 5 : l to 2~ : 1, more preferably 5 : 1 to 1~ : 1, and the diameter o:E the same is 0.01 to 1 ~, more preferably 0.02 to 0.5 ~. Furthermore, the length o-E the ferromagnetic substance powder is preferably 0.05 to 20 ~, more preferably 0.1 to 5 ~.
An example of wax is one or more of carnauba wax, montan wax, para:Efin wax, microcystaline wax, bees wax, or the like. Due to wax contained in the heat-sensitive tranferring layer 2 as a binder material, the melt-transer property of the transferring layer 2 obtained can he effectively increased. Thus, the transferred magnetic image 5 prepared is free from the void and the break, and further has an excellent adhesion on ~he receiving paper 3. Accordingly, it is especially preferable that wax is contained in the heat-sensitive transEerring layer 2.
An example of the thermoplastic resi.n is polyvinyl chloride, polyvinyl acetate, vinyl chloride vinyl acetate copolymer, polyethylene, polypropylene, polyacetal, eth.ylene-vinyl acetate copolymer, 5~

polystyrene, low molecul~r weight polystyrene, poly-acrylic ester, polyamide, ethyl cellulose, or the like.
Furthermore, epoxy resin, xylene resin, ketone resin, petroleum resin, rosin or the derivative.s thereof, cumarone-indene resin, terpene resin, polyurethane, synthetic rubber such as styrene-butadiene rubber, polyvinyl butyral, nitrile rubber, polyacrylate rubber, ethylene-propylene rubber, or the like can be also pre:Eerably employed.
An example of the above fat and oil is animal oil, vegetable oil, mineral oil, dioctyl phthalate, tricresyl phosphate, dibutyl phthalate, or the like.
An example of the above extender pigment is calcium carbonate, magnesium carbonate, diatomaceous lS earth, kaolin, white carbon, silicic acid powder, or the like. Furthermore, an example of the dispersant is nonionic surface active agent such as di(polyoxyethylene alkylether) phosphate, tri(polyoxyethylene alkylether) phosphate, polyoxyethylene stearylamine, polyoxyethylene laurylether, polyoxyethylene oleylether, polyoxyethylene cetyle~her, po].yoxyethylene stearylarylether, or the like.
The heat-sensitive transerring layer 2 thus obtained has preferably a thickness o-f 2 to 25 ~, and the heat-resisting foundation 1 has preferably a thickness of 3 to 4~ ~.
An example of the heat-resisting foundation is a plastic film such as polyester, moisture-protected cellophane, polycarbonate, nylon, polypropylene, or a paper such as condenser paper, glassine paper.
The heat-sensitive magnetic transfer element of the invention is overlapped with the receiving paper 3 such as check, and then is printed by a thermal head 4 of the thermal printer as shown in Fig. 2, whereby the magnetic image 5 is melted and transferred on the receiving paper 3.
In that case, the heat-sensi~ive transferring ` layer 2 according to the invention can be correctly ~195~

transferred only in the portion of the tr~nsferring layer 2 corresponding to the heatillg ancl printing portion Or the thermal head ~, because the heat-sensitive transferring l~yer 2 is a melting temperature o-f 5~ to 120C., and therefore is superior in the heat-transfer property an~ the adhesion property. As ~ result, the magnetic image prepared has a very sharp profile wi~hout causing the void, the break of the character and the smudge of the receiving paper 3.
In particular, the magnetic image 5 thus obtained has a high accuracy in dimension to ensure the reading operation of MICP~ so that a high reliability can be offered.
In addition, the invention has also signi-ficant advantages that a high-speed printing can be performed without generating noise, and the preparation of bill, chec}c, credit card, pass, traffic census card, or the like can be readily and rapidly carried out, since the magnetic image 5 is prepared by using the thermal printer.
~urther, the magnetic image obtained in the invention is not limited to only the certain type face such as E13B or CMC7 mentioned above, and other certain characters are also readily prepared from the heat-sensitive magnetic transfer element by means of the thermal printer.
The invention is rnore particularly described and explained bv means of the following Examples.

Example l A composition of heat-sensitive transferring layer described below was uniformly admixed and was applied on a polyester film having a thickness of 6 ~ by means of hot-melt coatillg to obtain a heat-sensitive transferring layer having a melting temperature of 68C.
and a thickness of 6 ~.

~s~

Ingredients Parts by Weight ~-Fe2O3 200 Coercive force: l20~ Oe Diameter: 0.
Length: 1 ~l Carnauba wax 15 Paraf-fin wax 32 (melting point: 68C.) Ethylene-vinyl acetate copolymer 3 10 Vaseline 5 The magnetic tranfer element thus obtained was overlapped with a fine paper, and then was printed by thermal printer commercially-available from Oki Electric Industry Co., Ltd. under "Thermal Printer 200" at a printing speed of 30 characters per second so that ~he heat-sensitive ~ransferring layer is melted and transferred on the fine paper to form magnetic images.

~e~
A composition of heat-sensitive transferring layer described below was uniformly admixed, and then was applied and dried on a condenser tissue to obtain a heat-sensitive transferring layer having a melting temperature of 90C. and a thickness of 8 ~.
Ingredi`ents Parts by Weight Fe3O4 68 Coercive force: 1100 Oe Diameter: 0.2 Ieng~h: 0.5 ~
30 Solprene T 4.5 (styrene-butadiene rubber available from Asahi Chemical Industry Co., Ltd.) Arkon P-90 g-~
(saturated alicyclic hydrocarbon resin available -from Arakawa Kagaku Kogyo Kabushiki Kaisha) - iloechst wax V 2.5 (Hoechs~ A~) 5~

To 1 uene 5 n Solvent naphtha 25 (boiling poiTlt: 125C.) The nagnetic transfer element thus obtained was 5 overlapped with a chec]~ paper, and then was printed by the same thermal printer as in Example 1 at a printing speed of 30 characters per second to melt and ~ransfer the heat-sensitive transferring layer in the form of magnetic images on the paper As a result, Dimensions of each magnetic image prepared in Examples 1 and 2 (character height, character width and line width) were included within the allowable ranges defined in JIS C 6251.
Also, voids existing in the magnetic images 15 were determined by observing whether single void is included within a square gauge of 0.21)3 mm. X 0.2n3 mm.
In that case, the void existing in a line having a width of 0.660 mm. or more was determined by employing a square gauge of 0.254 mm. X n.254 mm. according to the 20 definition of JIS C 6251. The results are shown in the following Table.
Furthermore, magnetic properties (coercive force, residual magnetic flux density and relative signal level) of each magnetic image prepared in Examples 1 and 25 2 are also shown in the same Table.
In that case, the relative signal level is determined by measuring a signal level with a MICR tester (commercially-available from Kidder Press Company Inc.
under "Kidder Magnetic Character Tester") defined in JIS
30 C 6251, and then calculating a percentage of the me~sured signal level against the standard signal level with reference to the same character. The relative signal level must be within a range of 50 to 2n() % against the standard signal level of the examined character.

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5~

In addition to the elements or ingredients used in Examples, other elements or ingredients can l)e used in F.xamples as set forth in the speclfication to obtain substantially the same results.
Variations and modi.fications will be apparent to a person skilled in the art in the ]ight of the present disclosure and within the scope of the presen~
cla:ims.

Claims (7)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A heat-sensitive magnetic transfer ele-ment for printing a magnetic image comprising a heat-resisting foundation and a heat-sensitive transferring layer provided on the foundation, said transferring layer comprising a ferromagnetic substance powder and a binder material comprising a wax and at least one of a resin and a synthetic rubber, and said transferring layer having a melting temperature of 50° to 120°C.
2. The transfer element of claim 1 wherein said magnetic substance powder is included in the transferring layer at a range of 30 to 97% by weight.
3. The transfer element of claim 1 wherein the thickness of the foundation is within a range of 3 to 40 µ, and the thickness of the transferring layer is within a range of 2 to 25 µ.
4. The transfer element of claim 1 wherein the wax is at least one member selected from the group consisting of carnauba wax, montan wax, paraffin wax, microcrystalline wax and bees wax.
5. The transfer element of claim 1 or 4 wherein the resin is at least one member selected from the group consisting of polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, poly-ethylene, polypropylene, polyacetal, ethylene-vinyl acetate copolymer, polystyrene, low molecular weight polystyrene, polyacrylic ester, polyamide, ethyl cel-lulose, epoxy resin, xylene resin, ketone resin, pet-roleum resin, rosin, rosin derivative, cumarone-indene resin, terpene resin and polyurethane.
6. The transfer element of claim 1 or 4 wherein the synthetic rubber is at least one member selected from the group consisting of styrene-buta-diene rubber, polyvinyl butyral, nitrile rubber, polyacrylate rubber and ethylene-propylene rubber.
7. A process for printing a magnetic image on a receiving medium, which comprises the steps of:
providing a heat-sensitive magnetic transfer element comprising a heat-resisting foundation and a heat-sensitive transferring layer provided on the foundation, said transferring layer comprising a fer-romagnetic substance powder and a binder material com-prising a wax and at least one of a resin and a syn-thetic rubber, and said transferring layer having a melting temperature of 50° to 120°C;
superimposing the transfer element over a receiving medium so that the transferring layer of the element is brought to come into contact with the receiving medium; and applying the heat from a thermal head to the transfer element whereby the portions of the transferring layer corresponding to the areas heated with the thermal head were melted and transferred onto the receiving medium to give a magnetic image.
CA000398280A 1981-04-21 1982-03-12 Heat-sensitive magnetic transfer element Expired CA1195114A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60961/1981 1981-04-21
JP56060961A JPS57174296A (en) 1981-04-21 1981-04-21 Heat transfer magnetic recording medium

Publications (1)

Publication Number Publication Date
CA1195114A true CA1195114A (en) 1985-10-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA000398280A Expired CA1195114A (en) 1981-04-21 1982-03-12 Heat-sensitive magnetic transfer element

Country Status (11)

Country Link
US (2) US4463034A (en)
JP (1) JPS57174296A (en)
CA (1) CA1195114A (en)
CH (1) CH658734A5 (en)
DE (1) DE3213937A1 (en)
FR (1) FR2504289B1 (en)
GB (2) GB2106038B (en)
HK (2) HK36689A (en)
IT (1) IT1150328B (en)
NL (1) NL183445C (en)
SG (1) SG87888G (en)

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IT1203667B (en) * 1983-03-30 1989-02-15 Olivetti & Co Spa HEAT-SENSITIVE INK ELEMENT FOR HIGH SPEED THERMAL PRINTERS
JPS59224394A (en) * 1983-06-04 1984-12-17 Canon Inc Thermal transfer material
JPS59227489A (en) * 1983-06-10 1984-12-20 Tomoegawa Paper Co Ltd Image recording sheet
US4533596A (en) * 1983-06-28 1985-08-06 Ncr Corporation Thermal magnetic transfer ribbon
JPS6018388A (en) * 1983-07-11 1985-01-30 Dainippon Printing Co Ltd Thermal magnetic recording medium
JPS6019588A (en) * 1983-07-13 1985-01-31 Ricoh Co Ltd Thermal transfer recording type label
JPS6083890A (en) * 1983-10-17 1985-05-13 Konishiroku Photo Ind Co Ltd Preparation of thermal transfer recording medium
JPS60101082A (en) * 1983-11-08 1985-06-05 Canon Inc Thermal transfer recording method
JPS60101081A (en) * 1983-11-08 1985-06-05 Canon Inc Thermal transfer material and thermal transfer recording method using the same
JPS60189490A (en) * 1984-03-09 1985-09-26 Canon Inc Thermal transfer material
JPS60212387A (en) * 1984-04-06 1985-10-24 Canon Inc Thermal transfer material and thermal transfer recording method using the same
JPS60234887A (en) * 1984-05-09 1985-11-21 Konishiroku Photo Ind Co Ltd Thermal transfer recording medium
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GB2152438A (en) 1985-08-07
IT1150328B (en) 1986-12-10
NL183445B (en) 1988-06-01
GB2106038B (en) 1986-01-02
GB2106038A (en) 1983-04-07
HK36789A (en) 1989-05-12
NL183445C (en) 1988-11-01
US4581283A (en) 1986-04-08
SG87888G (en) 1989-06-16
IT8220188A0 (en) 1982-03-16
NL8201588A (en) 1982-11-16
CH658734A5 (en) 1986-11-28
FR2504289B1 (en) 1986-04-04
FR2504289A1 (en) 1982-10-22
GB2152438B (en) 1986-02-12
HK36689A (en) 1989-05-12
US4463034A (en) 1984-07-31
DE3213937C2 (en) 1988-03-31
JPH0148157B2 (en) 1989-10-18
DE3213937A1 (en) 1982-11-18
GB8504433D0 (en) 1985-03-27
JPS57174296A (en) 1982-10-26

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