US4323904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic printing process and apparatus
Assignee: EIDP Inc
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Filing: 1979-09-13
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Granted: 1982-04-06
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Expires: 1999-09-13
Abstract
Abstract Magnetic printing apparatus for forming on a substrate a colored print of an original colored design, said apparatus comprising a ferromagnetic printing means which is imposed on an electrically conductive support; means for forming on the ferromagnetic printing means a magnetic image of a photocolor-separated film positive of the original colored design; means for developing the magnetic image on the ferromagnetic printing means with a toner comprising a ferromagnetic component, a dye and a resin; and means for transferring the developed image to the substrate. Optionally, the apparatus may include: means for adhering the developed image to the substrate; means for fixing said dye on and/or in a substrate; and/or means for removing said ferromagnetic component and said resin.
Inventors
- 👤 Donald W. Edwards
- 👤 Emery J. Gorondy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:04
CPC Classifications
G; G03; G03G; G03G19/00; G03G15/00; G03G15/65; G03G15/6588; G03G15/6591; G03G9/00; G03G9/08; G03G9/083; G03G2215/00; G03G2215/00362; G03G2215/00443; G03G2215/00523; G03G2215/00527
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
97 words
Magnetic printing apparatus, for use in forming on a substrate a colored print of an original colored design, comprising means for developing the magnetic image of a photocolor-separated film positive of the original design on a ferromagnetic material which is capable of continuously discharging an electric charge through its thickness to a grounded electrically conductive support on which it is imposed with a toner comprising a ferromagnetic component, a dye and a resin which substantially encapsulates said component and dye; and means for transferring the developed image directly or through an intermediate substrate to an ultimate substrate.
Claim 2
Dependent Claim
97 words
Magnetic printing apparatus, for use in forming on a substrate a colored print of an original colored design, comprising means for developing the magnetic image of a photocolor-separated film positive of the original design on a ferromagnetic material which is capable of continuously discharging an electric charge through its thickness to a grounded electrically conductive support on which it is imposed with a toner comprising a ferromagnetic component, a dye and a resin which substantially encapsulates said component and dye; and means for transferring the developed image directly or through an intermediate substrate to an ultimate substrate.
Claim 3
Dependent Claim
70 words
Apparatus of claim 1 additionally characterized in containing a means for forming on said ferromagnetic material a magnetic image of a photocolor-separated film positive of the original colored design by (i) magnetizing said ferromagnetic material in its entirety and thereafter heating one or more portions of said ferromagnetic material so as to demagnetize said one or more portions at least partially, or (ii) magnetizing selected portions of said ferromagnetic material.
Claim 4
Dependent Claim
23 words
The apparatus of either claim 1 or 2 additionally characterized in containing means for permanently fixing the dye on and/or in the substrate.
Claim 5
Dependent Claim
16 words
Apparatus of claim 3 which additionally includes means for removing for ferromagnetic component and the resin.
Claim 6
Dependent Claim
21 words
Apparatus of claim 4 which includes means for removing the ferromagnetic component and a water-soluble or water-solubilizable resin from the substrate.
Claim 7
Dependent Claim
38 words
Apparatus of either claim 1 or 2 which includes a plurality of all of said means in sequential array so as to provide for formation on the ultimate substrate of a multicolored print of an original multicolored design.
Claim 8
Dependent Claim
14 words
Apparatus of claim 6 wherein said ferromagnetic material consists essentially of acicular chromium dioxide.
Claim 9
Dependent Claim
16 words
Apparatus of claim 6 wherein said electrically conductive support consists essentially of an electrically conductive metal.
Claim 10
Dependent Claim
14 words
Apparatus of claim 6 wherein said electrically conductive support is a metalized plastic material.
Claim 11
Dependent Claim
113 words
Magnetic printing apparatus for forming on a substrate a colored print of an original colored design comprising a ferromagnetic printing means capable of continuously discharging an electric charge through its thickness to a grounded electrically conductive support on which it is imposed; means for forming on said ferromagnetic printing means a magnetic image of a photocolor-separated film positive of the original colored design; means for developing said magnetic image on said ferromagnetic printing means with a toner comprising a ferromagnetic component, a dye and a resin which substantially encapsulates said component and dye; means for transferring the developed image to the substrate; and means for fixing said dye on and/or in said substrate.
Claim 12
Dependent Claim
113 words
Magnetic printing apparatus for forming on a substrate a colored print of an original colored design comprising a ferromagnetic printing means capable of continuously discharging an electric charge through its thickness to a grounded electrically conductive support on which it is imposed; means for forming on said ferromagnetic printing means a magnetic image of a photocolor-separated film positive of the original colored design; means for developing said magnetic image on said ferromagnetic printing means with a toner comprising a ferromagnetic component, a dye and a resin which substantially encapsulates said component and dye; means for transferring the developed image to the substrate; and means for fixing said dye on and/or in said substrate.
Claim 13
Dependent Claim
34 words
Apparatus of claim 10 which includes a plurality of all of said means in sequential array so as to provide for formation on the substrate of a multicolored print of an original multicolored design.
Claim 14
Dependent Claim
17 words
Apparatus of claim 10 or 11 which includes means for removing said ferromagnetic component and said resin.
Claim 15
Dependent Claim
11 words
Apparatus of claim 12 wherein said resin is water-soluble or water-solubilizable.
Claim 16
Dependent Claim
14 words
Apparatus of claim 10 wherein said ferromagnetic means consists essentially of acicular chromium dioxide.
Claim 17
Dependent Claim
19 words
Apparatus of claim 10 wherein said means for transferring the developed image to the substrate is an electrostatic means.
Claim 18
Dependent Claim
16 words
Apparatus of claim 10 wherein said means for transferring the developed image is a pressure means.
Claim 19
Dependent Claim
16 words
Apparatus of claim 10 wherein said means for transferring the developed image is a magnetic means.
Claim 20
Dependent Claim
21 words
Apparatus of claim 10 wherein said means for fixing said dye on and/or in said substrate is a steam heating means.
Claim 21
Dependent Claim
21 words
Apparatus of claim 10 wherein said means for fixing said dye on and/or in said substrate is an infrared heating means.
Claim 22
Dependent Claim
100 words
Magnetic printing apparatus, for use in forming on a substrate a colored print of an original colored design, comprising means for developing the magnetic image of a photocolor-separated film positive of the original design on a ferromagnetic printing means capable of continuously discharging an electric charge through its thickness to a grounded electrically conductive support on which it is imposed with a toner comprising a ferromagnetic component, a dye and a resin which substantially encapsulates said component and dye; electrostatic and/or magnetic means for transferring the developed image to the substrate; and means for adhering the image to the substrate.
Claim 23
Dependent Claim
100 words
Magnetic printing apparatus, for use in forming on a substrate a colored print of an original colored design, comprising means for developing the magnetic image of a photocolor-separated film positive of the original design on a ferromagnetic printing means capable of continuously discharging an electric charge through its thickness to a grounded electrically conductive support on which it is imposed with a toner comprising a ferromagnetic component, a dye and a resin which substantially encapsulates said component and dye; electrostatic and/or magnetic means for transferring the developed image to the substrate; and means for adhering the image to the substrate.
Claim 24
Dependent Claim
13 words
Apparatus of claim 20 wherein the adhering means is a steam fusing means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-05 | 1985-10-05 | 1986-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-05 | 1989-10-05 | 1990-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-05 | 1993-10-05 | 1994-04-06 | $7700.00 | Window Closed / Lapsed |