Patent US3860796A successfully refreshed from Google Patents.
US3860796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically sensible record and process of producing same
Assignee: Synergistics Inc
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Filing: 1969-12-09
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Granted: 1975-01-14
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Expires: 1989-12-09
Abstract
Abstract A magnetically sensible record of data is prepared by indenting or embossing the surface of a non-magnetic receptor sheet, such as a plastic or cardboard card, with a linear series of indentations arranged in a binary code form. In one embodiment, the indentations are filled, as by squeegeeing with finely divided particles of a magnetically sensible material such as magnetic iron oxide and a binder therefor, and fixing the particles in the indentations as by drying or setting the binder when one is used or by overcoating with a plastic film. In another embodiment the card is first coated with the ferrite material so that the indentations are filled at the moment of impact, after which excess ferrite material is removed from the background areas as by wiping. The data record per se is also claimed. It is characterized by the absence of magnetic material between the individual bits of data, such that the card, when read, gives a high signal to noise ratio.
Inventors
- 👤 John G Wallace
- 👤 Paul H Kuzia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:26
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/08; Y; Y10; Y10S; Y10S283/00; Y10S283/904
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
A process of preparing a magnetically sensible record comprising indenting the surface of a non-magnetic receptor sheet with a linear series of indentations of a density of at least 50 bits per inch arranged in a binary code form, filling said indentations with finely divided particles of a magnetically sensible material and thereafter fixing said particles in place, wherein said record is a pocket credit card and wherein said indentations are arranged in an alpha-numeric binary code form with the background of each bit being free of magnetically sensible material and said record also contains on said surface conventional visually readable information.
Claim 2
Dependent Claim
102 words
A process of preparing a magnetically sensible record comprising indenting the surface of a non-magnetic receptor sheet with a linear series of indentations of a density of at least 50 bits per inch arranged in a binary code form, filling said indentations with finely divided particles of a magnetically sensible material and thereafter fixing said particles in place, wherein said record is a pocket credit card and wherein said indentations are arranged in an alpha-numeric binary code form with the background of each bit being free of magnetically sensible material and said record also contains on said surface conventional visually readable information.
Claim 3
Dependent Claim
94 words
A process of preparing a magnetically sensible record comprising indenting the surface of a non-magnetic receptor sheet with a linear series of indentations of a density of at least 50 bits per inch arranged in a binary code form, filling said indentations with finely divided particles of a magnetically sensible material and thereafter fixing said particles in place, wherein said indentations are made by passing said receptor sheet under a recording head having a striking scribe, and wherein said indentations are filled by sequeegeeing said magnetically sensible material after the indentations have been formed.
Claim 4
Dependent Claim
94 words
A process of preparing a magnetically sensible record comprising indenting the surface of a non-magnetic receptor sheet with a linear series of indentations of a density of at least 50 bits per inch arranged in a binary code form, filling said indentations with finely divided particles of a magnetically sensible material and thereafter fixing said particles in place, wherein said indentations are made by passing said receptor sheet under a recording head having a striking scribe, and wherein said indentations are filled by sequeegeeing said magnetically sensible material after the indentations have been formed.
Claim 5
Dependent Claim
127 words
A process of preparing a magnetically sensible record comprising indenting the surface of a non-magnetic receptor sheet with a linear series of indentations of a density of at least 50 bits per inch arranged in a binary code form, filling said indentations with finely divided particles of a magnetically sensible material and thereafter fixing said particles in place, wherein said indentations are made by passing said receptor sheet under a recording head having a striking scribe, and wherein said sheet is first coated in the area to be indented with said magnetically sensible material and said indentations are filled when formed with said magnetically sensible material by the action of said striking scribe, with excess magnetically sensible material then being removed from the surface of said sheet.
Claim 6
Dependent Claim
127 words
A process of preparing a magnetically sensible record comprising indenting the surface of a non-magnetic receptor sheet with a linear series of indentations of a density of at least 50 bits per inch arranged in a binary code form, filling said indentations with finely divided particles of a magnetically sensible material and thereafter fixing said particles in place, wherein said indentations are made by passing said receptor sheet under a recording head having a striking scribe, and wherein said sheet is first coated in the area to be indented with said magnetically sensible material and said indentations are filled when formed with said magnetically sensible material by the action of said striking scribe, with excess magnetically sensible material then being removed from the surface of said sheet.
References Cited (Backward Citations)
US2508953A
Cited
US2520077A
Cited
US3015087A
Cited
US2961649A
Cited
US3325632A
Cited
US3502851A
Cited
US3445633A
Cited
US3531627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |