US2584318A - Marking member containing magnetized material - Google Patents
Marking member containing magnetized material Download PDFInfo
- Publication number
- US2584318A US2584318A US106316A US10631649A US2584318A US 2584318 A US2584318 A US 2584318A US 106316 A US106316 A US 106316A US 10631649 A US10631649 A US 10631649A US 2584318 A US2584318 A US 2584318A
- Authority
- US
- United States
- Prior art keywords
- marking member
- magnetic
- magnetized material
- member containing
- marking
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D13/00—Pencil-leads; Crayon compositions; Chalk compositions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
- H01F41/16—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates the magnetic material being applied in the form of particles, e.g. by serigraphy, to form thick magnetic films or precursors therefor
Definitions
- This invention relates to a marking member containing permanently magnetized material, and more particularly pertains to one having a base of erodable material, such as wax, in which is incorporated permanently magnetizable material in fine particle form which is magnetized thereafter.
- Such a marking is useful in recording data on record material by making marks thereon, the erosion of the base material carrying with it a proportional amount of the magnetized material.
- the transferred magnetized material may be sensed by ordinary magnetic pickup devices.
- the invention includes certain novel features, the essential elements of which are set forth in appended claim and a preferred form or embodiment of which is hereinafter described.
- the marking member of this invention not only may contain magnetizable material which is of itself a visible pigment rendering the mark which it makes visible, but may also contain additional coloring agents if desired to give a deeper or different color to the mark.
- magnetic F9304 which is of itself a black pigment
- hard steel powder and aluminumnickel-cobalt-iron magnetic alloys.
- magnetizable substances are used in fine particle form. The smaller the particle size, the better they are dispersed in the base material and the more even their deposition on the record material when a mark is made thereon with the marking member. A powdered form of these materials need not be less in particle size than that which will pass a 325-mesh screen.
- the ordinary waxes used in wax crayons are best, although gelatin and erodable synthetic resins may be used in their place.
- the waxes may be mentioned carnauba wax, beeswax, paraffin, and the like, plasticized as desired to give the necessary erodability.
- Suitable dyes may be added to the base material to enhance the color over that of the natural color of the other ingredients, if desired.
- the base materials may be softened and the powdered magnetic material incorporated therein by stirring, mixing, or kneading, or the base material may be finely comminuted and intimately mixed with the magnetic powder.
- the waxes may be softened by heat, or melted, and the powdered magnetic material mixed therein, the marking member being shaped by any means such as molding or casting.
- the base material may be dissolved in an evaporable solvent 3 and the magnetic powder incorporated in the solution by stirring.
- a marking member comprising an erodable base material having dispersed therein a sumcient quantity of fine particles of permanently magnetized material so that with each mark made with the member, a sensible amount of magnetized material is transferred therewith, said magnetized material resulting from magnetizing 10 magnetizable material while dispersed in thebase: material.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
Patented Feb. 5, 19.52
MARKING MEMBER-CONTAINING MAGNETIZED MATERIAL Charles S. Allyn, Jr., Dayton, Ohio, assignor to The National Cash Register Company, Dayton, Ohio, a corporation of Maryland No Drawing. Application July 22, 1949, Serial No. 106,316
1 Claim. (Cl. 106-19) This invention relates to a marking member containing permanently magnetized material, and more particularly pertains to one having a base of erodable material, such as wax, in which is incorporated permanently magnetizable material in fine particle form which is magnetized thereafter.
Such a marking is useful in recording data on record material by making marks thereon, the erosion of the base material carrying with it a proportional amount of the magnetized material. The transferred magnetized material may be sensed by ordinary magnetic pickup devices.
In applicant's copending application for United States Letters Patent, Serial No. 106,315, now abandoned, filed on the same day as this appli cation, there is disclosed a marking member having an erodable base substance in which is incorporated, in fine particle form, unmagnetized permanently magnetizable material, and when that marking member is applied to record material, the eroded base substance carries with it a proportional part of the unmagnetized magnetizable particles, so that the record material may thereafter be placed in a magnetic field to activate the marks magnetically.
Therefore, it is an object of this invention to provide a marking member having included and dispersed therein fine particles of permanently magnetized magnetizable material.
With this and other objects in view, the invention includes certain novel features, the essential elements of which are set forth in appended claim and a preferred form or embodiment of which is hereinafter described.
The marking member of this invention not only may contain magnetizable material which is of itself a visible pigment rendering the mark which it makes visible, but may also contain additional coloring agents if desired to give a deeper or different color to the mark.
Among the magnetic substances which may be used are magnetic F9304, which is of itself a black pigment; hard steel powder; and aluminumnickel-cobalt-iron magnetic alloys. These magnetizable substances are used in fine particle form. The smaller the particle size, the better they are dispersed in the base material and the more even their deposition on the record material when a mark is made thereon with the marking member. A powdered form of these materials need not be less in particle size than that which will pass a 325-mesh screen. I
For the base material, the ordinary waxes used in wax crayons are best, although gelatin and erodable synthetic resins may be used in their place. Among the waxes may be mentioned carnauba wax, beeswax, paraffin, and the like, plasticized as desired to give the necessary erodability.
Following are typical base materials in parts by weight:
It has been found that or per cent, by volume, of magnetic material may be incorporated in the base material without materially interfering with the writing quality of the marking member-that is to say, the ease with which it may be moved over the record materialor without materially interfering with the integrity of the structure of the marking member from a strength standpoint. After the powder is incorporated in the base material the resulting member is placed in a magnetic field to magnetize the particles. With 50 to 60 per cent, by volume, of the marking member being magnetizable material, enough can be transferred by a mark made on record material, as in ordinary handwriting, to enable it to induce voltage in a standard magnetic pick-up device.
Suitable dyes may be added to the base material to enhance the color over that of the natural color of the other ingredients, if desired.
The invention is not to be deemed limited to the particular base materials or magnetic materials named, as it is obvious that selection of other materials is well within the skill of those familiar with erodable marking members and with magnetic materials.
In making such marking members, the base materials may be softened and the powdered magnetic material incorporated therein by stirring, mixing, or kneading, or the base material may be finely comminuted and intimately mixed with the magnetic powder. The waxes may be softened by heat, or melted, and the powdered magnetic material mixed therein, the marking member being shaped by any means such as molding or casting. If desired, the base material may be dissolved in an evaporable solvent 3 and the magnetic powder incorporated in the solution by stirring.
What is claimed is:
A marking member comprising an erodable base material having dispersed therein a sumcient quantity of fine particles of permanently magnetized material so that with each mark made with the member, a sensible amount of magnetized material is transferred therewith, said magnetized material resulting from magnetizing 10 magnetizable material while dispersed in thebase: material.
CHARLES JR! REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US106316A US2584318A (en) | 1949-07-22 | 1949-07-22 | Marking member containing magnetized material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US106316A US2584318A (en) | 1949-07-22 | 1949-07-22 | Marking member containing magnetized material |
Publications (1)
Publication Number | Publication Date |
---|---|
US2584318A true US2584318A (en) | 1952-02-05 |
Family
ID=22310740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US106316A Expired - Lifetime US2584318A (en) | 1949-07-22 | 1949-07-22 | Marking member containing magnetized material |
Country Status (1)
Country | Link |
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US (1) | US2584318A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2677275A (en) * | 1951-11-17 | 1954-05-04 | Sigmund S Dabrowski | Electromagnetic method of testing adhesive qualities of paints, lacquers, and the like |
US2744031A (en) * | 1949-10-15 | 1956-05-01 | Ncr Co | Sheet having a transferable coating containing magnetizable material |
US2791310A (en) * | 1952-06-28 | 1957-05-07 | Rca Corp | Character printing and encoding apparatus |
US2833475A (en) * | 1951-09-06 | 1958-05-06 | Burroughs Corp | Magnetic record and recordcontrolled mechanism |
US2897267A (en) * | 1953-05-08 | 1959-07-28 | David C Prince | Recording and translating of intelligence |
US3029157A (en) * | 1958-11-18 | 1962-04-10 | Audio Devices Inc | Magnetizable image transfer medium |
US3042616A (en) * | 1958-08-26 | 1962-07-03 | Ibm | Process of preparing magnetic ink |
US3284360A (en) * | 1964-02-24 | 1966-11-08 | Carters Ink Company | Magnetic transfer sheet |
EP0099682A2 (en) * | 1982-07-01 | 1984-02-01 | Exxon Research And Engineering Company | Ink jet ink composition |
US5279859A (en) * | 1991-09-27 | 1994-01-18 | May Brian W | Method for coloring fabric with crayon |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1075768A (en) * | 1913-03-31 | 1913-10-14 | Henry Jampolis | Arc-lamp electrode. |
US2318803A (en) * | 1942-03-18 | 1943-05-11 | Stoner Mudge Inc | Marking composition |
-
1949
- 1949-07-22 US US106316A patent/US2584318A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1075768A (en) * | 1913-03-31 | 1913-10-14 | Henry Jampolis | Arc-lamp electrode. |
US2318803A (en) * | 1942-03-18 | 1943-05-11 | Stoner Mudge Inc | Marking composition |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2744031A (en) * | 1949-10-15 | 1956-05-01 | Ncr Co | Sheet having a transferable coating containing magnetizable material |
US2833475A (en) * | 1951-09-06 | 1958-05-06 | Burroughs Corp | Magnetic record and recordcontrolled mechanism |
US2677275A (en) * | 1951-11-17 | 1954-05-04 | Sigmund S Dabrowski | Electromagnetic method of testing adhesive qualities of paints, lacquers, and the like |
US2791310A (en) * | 1952-06-28 | 1957-05-07 | Rca Corp | Character printing and encoding apparatus |
US2897267A (en) * | 1953-05-08 | 1959-07-28 | David C Prince | Recording and translating of intelligence |
US3042616A (en) * | 1958-08-26 | 1962-07-03 | Ibm | Process of preparing magnetic ink |
US3029157A (en) * | 1958-11-18 | 1962-04-10 | Audio Devices Inc | Magnetizable image transfer medium |
US3284360A (en) * | 1964-02-24 | 1966-11-08 | Carters Ink Company | Magnetic transfer sheet |
EP0099682A2 (en) * | 1982-07-01 | 1984-02-01 | Exxon Research And Engineering Company | Ink jet ink composition |
EP0099682A3 (en) * | 1982-07-01 | 1984-04-25 | Exxon Research And Engineering Company | Ink jet ink composition |
US5279859A (en) * | 1991-09-27 | 1994-01-18 | May Brian W | Method for coloring fabric with crayon |
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